Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS
M dwarfs have become increasingly important in the detection of exoplanets and the study of Earth-sized planets and their habitability. However, 20-30% of M dwarfs have companions that can impact the formation and evolution of planetary systems. We use high-resolution imaging and Gaia astrometry to...
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| creator | Matson, Rachel A Gore, Rebecca Howell, Steve B Ciardi, David R Christiansen, Jessie L Clark, Catherine A Crossfield, Ian J. M Fajardo-Acosta, Sergio B Fernandes, Rachel B Furlan, Elise Gilbert, Emily A Gonzales, Erica Lester, Kathryn V Lund, Michael B Matthews, Elisabeth C Polanski, Alex S Schlieder, Joshua E Ziegler, Carl |
| description | M dwarfs have become increasingly important in the detection of exoplanets
and the study of Earth-sized planets and their habitability. However, 20-30% of
M dwarfs have companions that can impact the formation and evolution of
planetary systems. We use high-resolution imaging and Gaia astrometry to detect
stellar companions around M dwarf exoplanet hosts discovered by TESS and
determine the projected separation and estimated stellar masses for each
system. We find 47 companions around 216 M dwarfs and a multiplicity rate of
$19.4\pm2.7$% that is consistent with field M dwarfs. The binary projected
separation distribution is shifted to larger separations, confirming the lack
of close binaries hosting transiting exoplanets seen in previous studies. We
correct the radii of planets with nearby companions and examine the properties
of planets in M dwarf multi-star systems. We also note three multi-planet
systems that occur in close binaries ($\lesssim 50$ au) where planet formation
is expected to be suppressed. |
| doi_str_mv | 10.48550/arxiv.2412.08465 |
| format | Article |
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and the study of Earth-sized planets and their habitability. However, 20-30% of
M dwarfs have companions that can impact the formation and evolution of
planetary systems. We use high-resolution imaging and Gaia astrometry to detect
stellar companions around M dwarf exoplanet hosts discovered by TESS and
determine the projected separation and estimated stellar masses for each
system. We find 47 companions around 216 M dwarfs and a multiplicity rate of
$19.4\pm2.7$% that is consistent with field M dwarfs. The binary projected
separation distribution is shifted to larger separations, confirming the lack
of close binaries hosting transiting exoplanets seen in previous studies. We
correct the radii of planets with nearby companions and examine the properties
of planets in M dwarf multi-star systems. We also note three multi-planet
systems that occur in close binaries ($\lesssim 50$ au) where planet formation
is expected to be suppressed.</description><identifier>DOI: 10.48550/arxiv.2412.08465</identifier><language>eng</language><subject>Physics - Earth and Planetary Astrophysics ; Physics - Solar and Stellar Astrophysics</subject><creationdate>2024-12</creationdate><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>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,776,881</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2412.08465$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2412.08465$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Matson, Rachel A</creatorcontrib><creatorcontrib>Gore, Rebecca</creatorcontrib><creatorcontrib>Howell, Steve B</creatorcontrib><creatorcontrib>Ciardi, David R</creatorcontrib><creatorcontrib>Christiansen, Jessie L</creatorcontrib><creatorcontrib>Clark, Catherine A</creatorcontrib><creatorcontrib>Crossfield, Ian J. M</creatorcontrib><creatorcontrib>Fajardo-Acosta, Sergio B</creatorcontrib><creatorcontrib>Fernandes, Rachel B</creatorcontrib><creatorcontrib>Furlan, Elise</creatorcontrib><creatorcontrib>Gilbert, Emily A</creatorcontrib><creatorcontrib>Gonzales, Erica</creatorcontrib><creatorcontrib>Lester, Kathryn V</creatorcontrib><creatorcontrib>Lund, Michael B</creatorcontrib><creatorcontrib>Matthews, Elisabeth C</creatorcontrib><creatorcontrib>Polanski, Alex S</creatorcontrib><creatorcontrib>Schlieder, Joshua E</creatorcontrib><creatorcontrib>Ziegler, Carl</creatorcontrib><title>Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS</title><description>M dwarfs have become increasingly important in the detection of exoplanets
and the study of Earth-sized planets and their habitability. However, 20-30% of
M dwarfs have companions that can impact the formation and evolution of
planetary systems. We use high-resolution imaging and Gaia astrometry to detect
stellar companions around M dwarf exoplanet hosts discovered by TESS and
determine the projected separation and estimated stellar masses for each
system. We find 47 companions around 216 M dwarfs and a multiplicity rate of
$19.4\pm2.7$% that is consistent with field M dwarfs. The binary projected
separation distribution is shifted to larger separations, confirming the lack
of close binaries hosting transiting exoplanets seen in previous studies. We
correct the radii of planets with nearby companions and examine the properties
of planets in M dwarf multi-star systems. We also note three multi-planet
systems that occur in close binaries ($\lesssim 50$ au) where planet formation
is expected to be suppressed.</description><subject>Physics - Earth and Planetary Astrophysics</subject><subject>Physics - Solar and Stellar Astrophysics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpjYJA0NNAzsTA1NdBPLKrILNMzMjE00jOwMDEz5WRwdEnNzU8vSizIyEwuVshPU_BVcClPLEpTcMrMSyyqVHCtyC_IScxLLVHwyC8uKVZwySxOzi9LLUpNUUiqVAhxDQ7mYWBNS8wpTuWF0twM8m6uIc4eumDL4guKMnOBBsWDLI0HW2pMWAUAz8Y2KQ</recordid><startdate>20241211</startdate><enddate>20241211</enddate><creator>Matson, Rachel A</creator><creator>Gore, Rebecca</creator><creator>Howell, Steve B</creator><creator>Ciardi, David R</creator><creator>Christiansen, Jessie L</creator><creator>Clark, Catherine A</creator><creator>Crossfield, Ian J. M</creator><creator>Fajardo-Acosta, Sergio B</creator><creator>Fernandes, Rachel B</creator><creator>Furlan, Elise</creator><creator>Gilbert, Emily A</creator><creator>Gonzales, Erica</creator><creator>Lester, Kathryn V</creator><creator>Lund, Michael B</creator><creator>Matthews, Elisabeth C</creator><creator>Polanski, Alex S</creator><creator>Schlieder, Joshua E</creator><creator>Ziegler, Carl</creator><scope>GOX</scope></search><sort><creationdate>20241211</creationdate><title>Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS</title><author>Matson, Rachel A ; Gore, Rebecca ; Howell, Steve B ; Ciardi, David R ; Christiansen, Jessie L ; Clark, Catherine A ; Crossfield, Ian J. M ; Fajardo-Acosta, Sergio B ; Fernandes, Rachel B ; Furlan, Elise ; Gilbert, Emily A ; Gonzales, Erica ; Lester, Kathryn V ; Lund, Michael B ; Matthews, Elisabeth C ; Polanski, Alex S ; Schlieder, Joshua E ; Ziegler, Carl</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_2412_084653</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Physics - Earth and Planetary Astrophysics</topic><topic>Physics - Solar and Stellar Astrophysics</topic><toplevel>online_resources</toplevel><creatorcontrib>Matson, Rachel A</creatorcontrib><creatorcontrib>Gore, Rebecca</creatorcontrib><creatorcontrib>Howell, Steve B</creatorcontrib><creatorcontrib>Ciardi, David R</creatorcontrib><creatorcontrib>Christiansen, Jessie L</creatorcontrib><creatorcontrib>Clark, Catherine A</creatorcontrib><creatorcontrib>Crossfield, Ian J. M</creatorcontrib><creatorcontrib>Fajardo-Acosta, Sergio B</creatorcontrib><creatorcontrib>Fernandes, Rachel B</creatorcontrib><creatorcontrib>Furlan, Elise</creatorcontrib><creatorcontrib>Gilbert, Emily A</creatorcontrib><creatorcontrib>Gonzales, Erica</creatorcontrib><creatorcontrib>Lester, Kathryn V</creatorcontrib><creatorcontrib>Lund, Michael B</creatorcontrib><creatorcontrib>Matthews, Elisabeth C</creatorcontrib><creatorcontrib>Polanski, Alex S</creatorcontrib><creatorcontrib>Schlieder, Joshua E</creatorcontrib><creatorcontrib>Ziegler, Carl</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Matson, Rachel A</au><au>Gore, Rebecca</au><au>Howell, Steve B</au><au>Ciardi, David R</au><au>Christiansen, Jessie L</au><au>Clark, Catherine A</au><au>Crossfield, Ian J. M</au><au>Fajardo-Acosta, Sergio B</au><au>Fernandes, Rachel B</au><au>Furlan, Elise</au><au>Gilbert, Emily A</au><au>Gonzales, Erica</au><au>Lester, Kathryn V</au><au>Lund, Michael B</au><au>Matthews, Elisabeth C</au><au>Polanski, Alex S</au><au>Schlieder, Joshua E</au><au>Ziegler, Carl</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS</atitle><date>2024-12-11</date><risdate>2024</risdate><abstract>M dwarfs have become increasingly important in the detection of exoplanets
and the study of Earth-sized planets and their habitability. However, 20-30% of
M dwarfs have companions that can impact the formation and evolution of
planetary systems. We use high-resolution imaging and Gaia astrometry to detect
stellar companions around M dwarf exoplanet hosts discovered by TESS and
determine the projected separation and estimated stellar masses for each
system. We find 47 companions around 216 M dwarfs and a multiplicity rate of
$19.4\pm2.7$% that is consistent with field M dwarfs. The binary projected
separation distribution is shifted to larger separations, confirming the lack
of close binaries hosting transiting exoplanets seen in previous studies. We
correct the radii of planets with nearby companions and examine the properties
of planets in M dwarf multi-star systems. We also note three multi-planet
systems that occur in close binaries ($\lesssim 50$ au) where planet formation
is expected to be suppressed.</abstract><doi>10.48550/arxiv.2412.08465</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Earth and Planetary Astrophysics Physics - Solar and Stellar Astrophysics |
| title | Demographics of M Dwarf Binary Exoplanet Hosts Discovered by TESS |
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