The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star
Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CA...
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| creator | Dreizler, S Ribas, I Reiners, A Bauer, F F López-González, M J Luque, R Morales, J C Pallé, E Rodríguez, E C Rodríguez López Tal-Or, L Aceituno, F J M Ammler-von Eiff R Antona Jiménez Anwand-Heerwart, H Arroyo-Torres, B Baroch, D Barrado, D Becerril, S Bluhm, P Cárdenas Vázquez, M C Casasayas-Barris, N Casanova, V Claret, A Czesla, S Díez-Alonso, E Fernández, M Fuhrmeister, B Fukui, A Galadí-Enríquez, D Gesa, L J Góngora Rueda González Hernández, J I González-Peinado, R Guijarro, A de Guindos, E Helmling, J Henning, T R Hernández Arabi L Hernández Castaño F Hernández Otero Huke, P Kemmer, J Klüter, J Lafarga, M Lampón, M Lázaro, F J Lodieu, N López-Comazzi, A López-Puertas, M López Salas, J F López-Santiago, J H Magán Madinabeitia Mancini, L D Maroto Fernández Martín, E L Martín-Fernández, P Martín-Ruiz, S Montañés-Rodríguez, P Montes, D Moreno-Raya, M E Nortmann, L Nowak, G Ofir, A Panduro, J Parviainen, H Pascual, J Passegger, V M Pavlov, A Pedraz, S Pérez-Calpena, A Perryman, M A C Rabaza, O Ballesta, A Ramón Redondo, P Reinhardt, S H -W Rix A Rodríguez Trinidad Sadegi, S Sánchez-Blanco, E Sánchez-López, A Sarmiento, L F Schäfer, S J H M M Schmitt Schöfer, P Schweitzer, A Shulyak, D Sota, A Stock, S Stürmer, J Suárez, J C Tabernero, H M M Tala Pinto Veredas, G Vico Linares, J I Vilardell, F Wagner, K Wolthoff, V Yan, F Zapatero Osorio, M R |
| description | Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden's Star and analysed them for planetary signals. Methods. We find periodic variability in the radial velocities of Teegarden's Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals. Results. We find evidence for two planet candidates, each with \(1.1M_\oplus\) minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age. Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities. |
| doi_str_mv | 10.48550/arxiv.1906.07196 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_arxiv</sourceid><recordid>TN_cdi_arxiv_primary_1906_07196</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2243263165</sourcerecordid><originalsourceid>FETCH-LOGICAL-a525-c1ab06ae100ba6f733c69c245aa1e01df3af709622633edb9dd9c8d7a9fc32ee3</originalsourceid><addsrcrecordid>eNo9kEtPwkAUhScmJhLkB7hyEheuWufRmTJLQuojAU2k--Yyc0cg0NaZgvjvrWBcncV55OQj5IazNBsrxR4gHNeHlBumU5Zzoy_IQEjJk3EmxBUZxbhhjAmdC6XkgBzKFdLp5H1evBYLGhGCXVHfBIrHpt1CjV2kEJp97eicui8IPqa0_Gpoh7sWA3RICwjdKtlBjPTcoBZqt3a9998tET8gOKzvI110EK7JpYdtxNGfDkn5WJTT52T29vQyncwSUEIllsOSaUDO2BK0z6W02liRKQCOjDsvwefMaCG0lOiWxjljxy4H460UiHJIbs-zJyhVG9Y7CN_VL5zqBKdP3J0TbWg-9xi7atPsQ91_qoTIZD_MtZI_U1toUQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2243263165</pqid></control><display><type>article</type><title>The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star</title><source>arXiv.org</source><source>Free E- Journals</source><creator>Dreizler, S ; Ribas, I ; Reiners, A ; Bauer, F F ; López-González, M J ; Luque, R ; Morales, J C ; Pallé, E ; Rodríguez, E ; C Rodríguez López ; Tal-Or, L ; Aceituno, F J ; M Ammler-von Eiff ; R Antona Jiménez ; Anwand-Heerwart, H ; Arroyo-Torres, B ; Baroch, D ; Barrado, D ; Becerril, S ; Bluhm, P ; Cárdenas Vázquez, M C ; Casasayas-Barris, N ; Casanova, V ; Claret, A ; Czesla, S ; Díez-Alonso, E ; Fernández, M ; Fuhrmeister, B ; Fukui, A ; Galadí-Enríquez, D ; Gesa, L ; J Góngora Rueda ; González Hernández, J I ; González-Peinado, R ; Guijarro, A ; de Guindos, E ; Helmling, J ; Henning, T ; R Hernández Arabi ; L Hernández Castaño ; F Hernández Otero ; Huke, P ; Kemmer, J ; Klüter, J ; Lafarga, M ; Lampón, M ; Lázaro, F J ; Lodieu, N ; López-Comazzi, A ; López-Puertas, M ; López Salas, J F ; López-Santiago, J ; H Magán Madinabeitia ; Mancini, L ; D Maroto Fernández ; Martín, E L ; Martín-Fernández, P ; Martín-Ruiz, S ; Montañés-Rodríguez, P ; Montes, D ; Moreno-Raya, M E ; Nortmann, L ; Nowak, G ; Ofir, A ; Panduro, J ; Parviainen, H ; Pascual, J ; Passegger, V M ; Pavlov, A ; Pedraz, S ; Pérez-Calpena, A ; Perryman, M A C ; Rabaza, O ; Ballesta, A Ramón ; Redondo, P ; Reinhardt, S ; H -W Rix ; A Rodríguez Trinidad ; Sadegi, S ; Sánchez-Blanco, E ; Sánchez-López, A ; Sarmiento, L F ; Schäfer, S ; J H M M Schmitt ; Schöfer, P ; Schweitzer, A ; Shulyak, D ; Sota, A ; Stock, S ; Stürmer, J ; Suárez, J C ; Tabernero, H M ; M Tala Pinto ; Veredas, G ; Vico Linares, J I ; Vilardell, F ; Wagner, K ; Wolthoff, V ; Yan, F ; Zapatero Osorio, M R</creator><creatorcontrib>Dreizler, S ; Ribas, I ; Reiners, A ; Bauer, F F ; López-González, M J ; Luque, R ; Morales, J C ; Pallé, E ; Rodríguez, E ; C Rodríguez López ; Tal-Or, L ; Aceituno, F J ; M Ammler-von Eiff ; R Antona Jiménez ; Anwand-Heerwart, H ; Arroyo-Torres, B ; Baroch, D ; Barrado, D ; Becerril, S ; Bluhm, P ; Cárdenas Vázquez, M C ; Casasayas-Barris, N ; Casanova, V ; Claret, A ; Czesla, S ; Díez-Alonso, E ; Fernández, M ; Fuhrmeister, B ; Fukui, A ; Galadí-Enríquez, D ; Gesa, L ; J Góngora Rueda ; González Hernández, J I ; González-Peinado, R ; Guijarro, A ; de Guindos, E ; Helmling, J ; Henning, T ; R Hernández Arabi ; L Hernández Castaño ; F Hernández Otero ; Huke, P ; Kemmer, J ; Klüter, J ; Lafarga, M ; Lampón, M ; Lázaro, F J ; Lodieu, N ; López-Comazzi, A ; López-Puertas, M ; López Salas, J F ; López-Santiago, J ; H Magán Madinabeitia ; Mancini, L ; D Maroto Fernández ; Martín, E L ; Martín-Fernández, P ; Martín-Ruiz, S ; Montañés-Rodríguez, P ; Montes, D ; Moreno-Raya, M E ; Nortmann, L ; Nowak, G ; Ofir, A ; Panduro, J ; Parviainen, H ; Pascual, J ; Passegger, V M ; Pavlov, A ; Pedraz, S ; Pérez-Calpena, A ; Perryman, M A C ; Rabaza, O ; Ballesta, A Ramón ; Redondo, P ; Reinhardt, S ; H -W Rix ; A Rodríguez Trinidad ; Sadegi, S ; Sánchez-Blanco, E ; Sánchez-López, A ; Sarmiento, L F ; Schäfer, S ; J H M M Schmitt ; Schöfer, P ; Schweitzer, A ; Shulyak, D ; Sota, A ; Stock, S ; Stürmer, J ; Suárez, J C ; Tabernero, H M ; M Tala Pinto ; Veredas, G ; Vico Linares, J I ; Vilardell, F ; Wagner, K ; Wolthoff, V ; Yan, F ; Zapatero Osorio, M R</creatorcontrib><description>Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden's Star and analysed them for planetary signals. Methods. We find periodic variability in the radial velocities of Teegarden's Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals. Results. We find evidence for two planet candidates, each with \(1.1M_\oplus\) minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age. Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1906.07196</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Extrasolar planets ; Photometry ; Physics - Earth and Planetary Astrophysics ; Planet detection ; Planetary rotation ; Radial velocity ; Red dwarf stars ; Solar neighborhood ; Transit</subject><ispartof>arXiv.org, 2019-09</ispartof><rights>2019. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>http://arxiv.org/licenses/nonexclusive-distrib/1.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,780,881,27902</link.rule.ids><backlink>$$Uhttps://doi.org/10.48550/arXiv.1906.07196$$DView paper in arXiv$$Hfree_for_read</backlink><backlink>$$Uhttps://doi.org/10.1051/0004-6361/201935460$$DView published paper (Access to full text may be restricted)$$Hfree_for_read</backlink></links><search><creatorcontrib>Dreizler, S</creatorcontrib><creatorcontrib>Ribas, I</creatorcontrib><creatorcontrib>Reiners, A</creatorcontrib><creatorcontrib>Bauer, F F</creatorcontrib><creatorcontrib>López-González, M J</creatorcontrib><creatorcontrib>Luque, R</creatorcontrib><creatorcontrib>Morales, J C</creatorcontrib><creatorcontrib>Pallé, E</creatorcontrib><creatorcontrib>Rodríguez, E</creatorcontrib><creatorcontrib>C Rodríguez López</creatorcontrib><creatorcontrib>Tal-Or, L</creatorcontrib><creatorcontrib>Aceituno, F J</creatorcontrib><creatorcontrib>M Ammler-von Eiff</creatorcontrib><creatorcontrib>R Antona Jiménez</creatorcontrib><creatorcontrib>Anwand-Heerwart, H</creatorcontrib><creatorcontrib>Arroyo-Torres, B</creatorcontrib><creatorcontrib>Baroch, D</creatorcontrib><creatorcontrib>Barrado, D</creatorcontrib><creatorcontrib>Becerril, S</creatorcontrib><creatorcontrib>Bluhm, P</creatorcontrib><creatorcontrib>Cárdenas Vázquez, M C</creatorcontrib><creatorcontrib>Casasayas-Barris, N</creatorcontrib><creatorcontrib>Casanova, V</creatorcontrib><creatorcontrib>Claret, A</creatorcontrib><creatorcontrib>Czesla, S</creatorcontrib><creatorcontrib>Díez-Alonso, E</creatorcontrib><creatorcontrib>Fernández, M</creatorcontrib><creatorcontrib>Fuhrmeister, B</creatorcontrib><creatorcontrib>Fukui, A</creatorcontrib><creatorcontrib>Galadí-Enríquez, D</creatorcontrib><creatorcontrib>Gesa, L</creatorcontrib><creatorcontrib>J Góngora Rueda</creatorcontrib><creatorcontrib>González Hernández, J I</creatorcontrib><creatorcontrib>González-Peinado, R</creatorcontrib><creatorcontrib>Guijarro, A</creatorcontrib><creatorcontrib>de Guindos, E</creatorcontrib><creatorcontrib>Helmling, J</creatorcontrib><creatorcontrib>Henning, T</creatorcontrib><creatorcontrib>R Hernández Arabi</creatorcontrib><creatorcontrib>L Hernández Castaño</creatorcontrib><creatorcontrib>F Hernández Otero</creatorcontrib><creatorcontrib>Huke, P</creatorcontrib><creatorcontrib>Kemmer, J</creatorcontrib><creatorcontrib>Klüter, J</creatorcontrib><creatorcontrib>Lafarga, M</creatorcontrib><creatorcontrib>Lampón, M</creatorcontrib><creatorcontrib>Lázaro, F J</creatorcontrib><creatorcontrib>Lodieu, N</creatorcontrib><creatorcontrib>López-Comazzi, A</creatorcontrib><creatorcontrib>López-Puertas, M</creatorcontrib><creatorcontrib>López Salas, J F</creatorcontrib><creatorcontrib>López-Santiago, J</creatorcontrib><creatorcontrib>H Magán Madinabeitia</creatorcontrib><creatorcontrib>Mancini, L</creatorcontrib><creatorcontrib>D Maroto Fernández</creatorcontrib><creatorcontrib>Martín, E L</creatorcontrib><creatorcontrib>Martín-Fernández, P</creatorcontrib><creatorcontrib>Martín-Ruiz, S</creatorcontrib><creatorcontrib>Montañés-Rodríguez, P</creatorcontrib><creatorcontrib>Montes, D</creatorcontrib><creatorcontrib>Moreno-Raya, M E</creatorcontrib><creatorcontrib>Nortmann, L</creatorcontrib><creatorcontrib>Nowak, G</creatorcontrib><creatorcontrib>Ofir, A</creatorcontrib><creatorcontrib>Panduro, J</creatorcontrib><creatorcontrib>Parviainen, H</creatorcontrib><creatorcontrib>Pascual, J</creatorcontrib><creatorcontrib>Passegger, V M</creatorcontrib><creatorcontrib>Pavlov, A</creatorcontrib><creatorcontrib>Pedraz, S</creatorcontrib><creatorcontrib>Pérez-Calpena, A</creatorcontrib><creatorcontrib>Perryman, M A C</creatorcontrib><creatorcontrib>Rabaza, O</creatorcontrib><creatorcontrib>Ballesta, A Ramón</creatorcontrib><creatorcontrib>Redondo, P</creatorcontrib><creatorcontrib>Reinhardt, S</creatorcontrib><creatorcontrib>H -W Rix</creatorcontrib><creatorcontrib>A Rodríguez Trinidad</creatorcontrib><creatorcontrib>Sadegi, S</creatorcontrib><creatorcontrib>Sánchez-Blanco, E</creatorcontrib><creatorcontrib>Sánchez-López, A</creatorcontrib><creatorcontrib>Sarmiento, L F</creatorcontrib><creatorcontrib>Schäfer, S</creatorcontrib><creatorcontrib>J H M M Schmitt</creatorcontrib><creatorcontrib>Schöfer, P</creatorcontrib><creatorcontrib>Schweitzer, A</creatorcontrib><creatorcontrib>Shulyak, D</creatorcontrib><creatorcontrib>Sota, A</creatorcontrib><creatorcontrib>Stock, S</creatorcontrib><creatorcontrib>Stürmer, J</creatorcontrib><creatorcontrib>Suárez, J C</creatorcontrib><creatorcontrib>Tabernero, H M</creatorcontrib><creatorcontrib>M Tala Pinto</creatorcontrib><creatorcontrib>Veredas, G</creatorcontrib><creatorcontrib>Vico Linares, J I</creatorcontrib><creatorcontrib>Vilardell, F</creatorcontrib><creatorcontrib>Wagner, K</creatorcontrib><creatorcontrib>Wolthoff, V</creatorcontrib><creatorcontrib>Yan, F</creatorcontrib><creatorcontrib>Zapatero Osorio, M R</creatorcontrib><title>The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star</title><title>arXiv.org</title><description>Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden's Star and analysed them for planetary signals. Methods. We find periodic variability in the radial velocities of Teegarden's Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals. Results. We find evidence for two planet candidates, each with \(1.1M_\oplus\) minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age. Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities.</description><subject>Extrasolar planets</subject><subject>Photometry</subject><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Planet detection</subject><subject>Planetary rotation</subject><subject>Radial velocity</subject><subject>Red dwarf stars</subject><subject>Solar neighborhood</subject><subject>Transit</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><sourceid>GOX</sourceid><recordid>eNo9kEtPwkAUhScmJhLkB7hyEheuWufRmTJLQuojAU2k--Yyc0cg0NaZgvjvrWBcncV55OQj5IazNBsrxR4gHNeHlBumU5Zzoy_IQEjJk3EmxBUZxbhhjAmdC6XkgBzKFdLp5H1evBYLGhGCXVHfBIrHpt1CjV2kEJp97eicui8IPqa0_Gpoh7sWA3RICwjdKtlBjPTcoBZqt3a9998tET8gOKzvI110EK7JpYdtxNGfDkn5WJTT52T29vQyncwSUEIllsOSaUDO2BK0z6W02liRKQCOjDsvwefMaCG0lOiWxjljxy4H460UiHJIbs-zJyhVG9Y7CN_VL5zqBKdP3J0TbWg-9xi7atPsQ91_qoTIZD_MtZI_U1toUQ</recordid><startdate>20190913</startdate><enddate>20190913</enddate><creator>Dreizler, S</creator><creator>Ribas, I</creator><creator>Reiners, A</creator><creator>Bauer, F F</creator><creator>López-González, M J</creator><creator>Luque, R</creator><creator>Morales, J C</creator><creator>Pallé, E</creator><creator>Rodríguez, E</creator><creator>C Rodríguez López</creator><creator>Tal-Or, L</creator><creator>Aceituno, F J</creator><creator>M Ammler-von Eiff</creator><creator>R Antona Jiménez</creator><creator>Anwand-Heerwart, H</creator><creator>Arroyo-Torres, B</creator><creator>Baroch, D</creator><creator>Barrado, D</creator><creator>Becerril, S</creator><creator>Bluhm, P</creator><creator>Cárdenas Vázquez, M C</creator><creator>Casasayas-Barris, N</creator><creator>Casanova, V</creator><creator>Claret, A</creator><creator>Czesla, S</creator><creator>Díez-Alonso, E</creator><creator>Fernández, M</creator><creator>Fuhrmeister, B</creator><creator>Fukui, A</creator><creator>Galadí-Enríquez, D</creator><creator>Gesa, L</creator><creator>J Góngora Rueda</creator><creator>González Hernández, J I</creator><creator>González-Peinado, R</creator><creator>Guijarro, A</creator><creator>de Guindos, E</creator><creator>Helmling, J</creator><creator>Henning, T</creator><creator>R Hernández Arabi</creator><creator>L Hernández Castaño</creator><creator>F Hernández Otero</creator><creator>Huke, P</creator><creator>Kemmer, J</creator><creator>Klüter, J</creator><creator>Lafarga, M</creator><creator>Lampón, M</creator><creator>Lázaro, F J</creator><creator>Lodieu, N</creator><creator>López-Comazzi, A</creator><creator>López-Puertas, M</creator><creator>López Salas, J F</creator><creator>López-Santiago, J</creator><creator>H Magán Madinabeitia</creator><creator>Mancini, L</creator><creator>D Maroto Fernández</creator><creator>Martín, E L</creator><creator>Martín-Fernández, P</creator><creator>Martín-Ruiz, S</creator><creator>Montañés-Rodríguez, P</creator><creator>Montes, D</creator><creator>Moreno-Raya, M E</creator><creator>Nortmann, L</creator><creator>Nowak, G</creator><creator>Ofir, A</creator><creator>Panduro, J</creator><creator>Parviainen, H</creator><creator>Pascual, J</creator><creator>Passegger, V M</creator><creator>Pavlov, A</creator><creator>Pedraz, S</creator><creator>Pérez-Calpena, A</creator><creator>Perryman, M A C</creator><creator>Rabaza, O</creator><creator>Ballesta, A Ramón</creator><creator>Redondo, P</creator><creator>Reinhardt, S</creator><creator>H -W Rix</creator><creator>A Rodríguez Trinidad</creator><creator>Sadegi, S</creator><creator>Sánchez-Blanco, E</creator><creator>Sánchez-López, A</creator><creator>Sarmiento, L F</creator><creator>Schäfer, S</creator><creator>J H M M Schmitt</creator><creator>Schöfer, P</creator><creator>Schweitzer, A</creator><creator>Shulyak, D</creator><creator>Sota, A</creator><creator>Stock, S</creator><creator>Stürmer, J</creator><creator>Suárez, J C</creator><creator>Tabernero, H M</creator><creator>M Tala Pinto</creator><creator>Veredas, G</creator><creator>Vico Linares, J I</creator><creator>Vilardell, F</creator><creator>Wagner, K</creator><creator>Wolthoff, V</creator><creator>Yan, F</creator><creator>Zapatero Osorio, M R</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20190913</creationdate><title>The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star</title><author>Dreizler, S ; Ribas, I ; Reiners, A ; Bauer, F F ; López-González, M J ; Luque, R ; Morales, J C ; Pallé, E ; Rodríguez, E ; C Rodríguez López ; Tal-Or, L ; Aceituno, F J ; M Ammler-von Eiff ; R Antona Jiménez ; Anwand-Heerwart, H ; Arroyo-Torres, B ; Baroch, D ; Barrado, D ; Becerril, S ; Bluhm, P ; Cárdenas Vázquez, M C ; Casasayas-Barris, N ; Casanova, V ; Claret, A ; Czesla, S ; Díez-Alonso, E ; Fernández, M ; Fuhrmeister, B ; Fukui, A ; Galadí-Enríquez, D ; Gesa, L ; J Góngora Rueda ; González Hernández, J I ; González-Peinado, R ; Guijarro, A ; de Guindos, E ; Helmling, J ; Henning, T ; R Hernández Arabi ; L Hernández Castaño ; F Hernández Otero ; Huke, P ; Kemmer, J ; Klüter, J ; Lafarga, M ; Lampón, M ; Lázaro, F J ; Lodieu, N ; López-Comazzi, A ; López-Puertas, M ; López Salas, J F ; López-Santiago, J ; H Magán Madinabeitia ; Mancini, L ; D Maroto Fernández ; Martín, E L ; Martín-Fernández, P ; Martín-Ruiz, S ; Montañés-Rodríguez, P ; Montes, D ; Moreno-Raya, M E ; Nortmann, L ; Nowak, G ; Ofir, A ; Panduro, J ; Parviainen, H ; Pascual, J ; Passegger, V M ; Pavlov, A ; Pedraz, S ; Pérez-Calpena, A ; Perryman, M A C ; Rabaza, O ; Ballesta, A Ramón ; Redondo, P ; Reinhardt, S ; H -W Rix ; A Rodríguez Trinidad ; Sadegi, S ; Sánchez-Blanco, E ; Sánchez-López, A ; Sarmiento, L F ; Schäfer, S ; J H M M Schmitt ; Schöfer, P ; Schweitzer, A ; Shulyak, D ; Sota, A ; Stock, S ; Stürmer, J ; Suárez, J C ; Tabernero, H M ; M Tala Pinto ; Veredas, G ; Vico Linares, J I ; Vilardell, F ; Wagner, K ; Wolthoff, V ; Yan, F ; Zapatero Osorio, M R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a525-c1ab06ae100ba6f733c69c245aa1e01df3af709622633edb9dd9c8d7a9fc32ee3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Extrasolar planets</topic><topic>Photometry</topic><topic>Physics - 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Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dreizler, S</au><au>Ribas, I</au><au>Reiners, A</au><au>Bauer, F F</au><au>López-González, M J</au><au>Luque, R</au><au>Morales, J C</au><au>Pallé, E</au><au>Rodríguez, E</au><au>C Rodríguez López</au><au>Tal-Or, L</au><au>Aceituno, F J</au><au>M Ammler-von Eiff</au><au>R Antona Jiménez</au><au>Anwand-Heerwart, H</au><au>Arroyo-Torres, B</au><au>Baroch, D</au><au>Barrado, D</au><au>Becerril, S</au><au>Bluhm, P</au><au>Cárdenas Vázquez, M C</au><au>Casasayas-Barris, N</au><au>Casanova, V</au><au>Claret, A</au><au>Czesla, S</au><au>Díez-Alonso, E</au><au>Fernández, M</au><au>Fuhrmeister, B</au><au>Fukui, A</au><au>Galadí-Enríquez, D</au><au>Gesa, L</au><au>J Góngora Rueda</au><au>González Hernández, J I</au><au>González-Peinado, R</au><au>Guijarro, A</au><au>de Guindos, E</au><au>Helmling, J</au><au>Henning, T</au><au>R Hernández Arabi</au><au>L Hernández Castaño</au><au>F Hernández Otero</au><au>Huke, P</au><au>Kemmer, J</au><au>Klüter, J</au><au>Lafarga, M</au><au>Lampón, M</au><au>Lázaro, F J</au><au>Lodieu, N</au><au>López-Comazzi, A</au><au>López-Puertas, M</au><au>López Salas, J F</au><au>López-Santiago, J</au><au>H Magán Madinabeitia</au><au>Mancini, L</au><au>D Maroto Fernández</au><au>Martín, E L</au><au>Martín-Fernández, P</au><au>Martín-Ruiz, S</au><au>Montañés-Rodríguez, P</au><au>Montes, D</au><au>Moreno-Raya, M E</au><au>Nortmann, L</au><au>Nowak, G</au><au>Ofir, A</au><au>Panduro, J</au><au>Parviainen, H</au><au>Pascual, J</au><au>Passegger, V M</au><au>Pavlov, A</au><au>Pedraz, S</au><au>Pérez-Calpena, A</au><au>Perryman, M A C</au><au>Rabaza, O</au><au>Ballesta, A Ramón</au><au>Redondo, P</au><au>Reinhardt, S</au><au>H -W Rix</au><au>A Rodríguez Trinidad</au><au>Sadegi, S</au><au>Sánchez-Blanco, E</au><au>Sánchez-López, A</au><au>Sarmiento, L F</au><au>Schäfer, S</au><au>J H M M Schmitt</au><au>Schöfer, P</au><au>Schweitzer, A</au><au>Shulyak, D</au><au>Sota, A</au><au>Stock, S</au><au>Stürmer, J</au><au>Suárez, J C</au><au>Tabernero, H M</au><au>M Tala Pinto</au><au>Veredas, G</au><au>Vico Linares, J I</au><au>Vilardell, F</au><au>Wagner, K</au><au>Wolthoff, V</au><au>Yan, F</au><au>Zapatero Osorio, M R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star</atitle><jtitle>arXiv.org</jtitle><date>2019-09-13</date><risdate>2019</risdate><eissn>2331-8422</eissn><abstract>Context. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden's Star and analysed them for planetary signals. Methods. We find periodic variability in the radial velocities of Teegarden's Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals. Results. We find evidence for two planet candidates, each with \(1.1M_\oplus\) minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age. Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1906.07196</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | EISSN: 2331-8422 |
| ispartof | arXiv.org, 2019-09 |
| issn | 2331-8422 |
| language | eng |
| recordid | cdi_arxiv_primary_1906_07196 |
| source | arXiv.org; Free E- Journals |
| subjects | Extrasolar planets Photometry Physics - Earth and Planetary Astrophysics Planet detection Planetary rotation Radial velocity Red dwarf stars Solar neighborhood Transit |
| title | The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star |
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