High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890
Simultaneous time-resolved observations in broadband photometry and in H-alpha and near-UV spectroscopy are presented of Gliese 890, a single M dwarf of the BY Draconis type with the shortest known period of rotation among field stars of its type. The continuum light curves exhibit modulations chara...
Gespeichert in:
| Veröffentlicht in: | The Astrophysical journal 1990-02, Vol.349 (2), p.608-619 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 619 |
|---|---|
| container_issue | 2 |
| container_start_page | 608 |
| container_title | The Astrophysical journal |
| container_volume | 349 |
| creator | YOUNG, A SKUMANICH, A MACGREGOR, K. B TEMPLE, S |
| description | Simultaneous time-resolved observations in broadband photometry and in H-alpha and near-UV spectroscopy are presented of Gliese 890, a single M dwarf of the BY Draconis type with the shortest known period of rotation among field stars of its type. The continuum light curves exhibit modulations characteristic of the presence of localized dark spot regions, and the spectra show corresponding modulations of the intensity of H-alpha emission, with the latter being substantially in phase with the former. Secular changes in the continuum light curve indicate that the geometry of the spots changes appreciably over time scales of the order of 60 rotation periods. The overall chromospheric activity is not significantly greater than that found in similar stars which rotate much more slowly. The principal active region present on the visible disk of the star during the observations appear to be at a remarkably high latitude compared to the occurrence of such regions on the sun. 25 refs. |
| doi_str_mv | 10.1086/168347 |
| format | Article |
| fullrecord | <record><control><sourceid>pascalfrancis_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_7135538</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>6825397</sourcerecordid><originalsourceid>FETCH-LOGICAL-c277t-a48146087ee0d9d65cc7278e219352f1c03b76f88dd73a311504528200dd9c933</originalsourceid><addsrcrecordid>eNo90E1LxDAQgOEgCq6r_oYg4q2aj-brKIvuCiteXPBWxiTtRmpbkqj039ul4mkYeGYOL0KXlNxSouUdlZqX6ggtqOC6KLlQx2hBCCkLydXbKTpL6eOwMmMWaLcJzb5oIYf85TxOQ58xdA4PLTQeg83hO-QR9x3Oe48jDMG1I459ni66Bj9j9wOxxilDxOs2-OSxNuQcndTQJn_xN5do9_jwutoU25f10-p-W1imVC6g1LSURCvviTNOCmsVU9ozarhgNbWEvytZa-2c4sApFaQUTDNCnDPWcL5EV_PfPuVQJRuyt3vbd523uVKUi6nAhG5mZGOfUvR1NcTwCXGsKKkOxaq52ASvZzhAstDWETob0r-WmgluFP8Fg7BnoQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890</title><source>Alma/SFX Local Collection</source><creator>YOUNG, A ; SKUMANICH, A ; MACGREGOR, K. B ; TEMPLE, S</creator><creatorcontrib>YOUNG, A ; SKUMANICH, A ; MACGREGOR, K. B ; TEMPLE, S</creatorcontrib><description>Simultaneous time-resolved observations in broadband photometry and in H-alpha and near-UV spectroscopy are presented of Gliese 890, a single M dwarf of the BY Draconis type with the shortest known period of rotation among field stars of its type. The continuum light curves exhibit modulations characteristic of the presence of localized dark spot regions, and the spectra show corresponding modulations of the intensity of H-alpha emission, with the latter being substantially in phase with the former. Secular changes in the continuum light curve indicate that the geometry of the spots changes appreciably over time scales of the order of 60 rotation periods. The overall chromospheric activity is not significantly greater than that found in similar stars which rotate much more slowly. The principal active region present on the visible disk of the star during the observations appear to be at a remarkably high latitude compared to the occurrence of such regions on the sun. 25 refs.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1086/168347</identifier><identifier>CODEN: ASJOAB</identifier><language>eng</language><publisher>Chicago, IL: University of Chicago Press</publisher><subject>640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources ; Astronomy ; ATMOSPHERES ; BALMER LINES ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; DWARF STARS ; Earth, ocean, space ; Exact sciences and technology ; MOTION ; Radii and surface features (starspots, etc.) ; ROTATION ; SPECTRA ; SPECTROPHOTOMETRY ; STARS ; STARSPOTS ; STELLAR ACTIVITY ; STELLAR ATMOSPHERES ; Stellar characteristics and properties ; STELLAR CHROMOSPHERES ; ULTRAVIOLET SPECTRA</subject><ispartof>The Astrophysical journal, 1990-02, Vol.349 (2), p.608-619</ispartof><rights>1990 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c277t-a48146087ee0d9d65cc7278e219352f1c03b76f88dd73a311504528200dd9c933</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=6825397$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/7135538$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>YOUNG, A</creatorcontrib><creatorcontrib>SKUMANICH, A</creatorcontrib><creatorcontrib>MACGREGOR, K. B</creatorcontrib><creatorcontrib>TEMPLE, S</creatorcontrib><title>High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890</title><title>The Astrophysical journal</title><description>Simultaneous time-resolved observations in broadband photometry and in H-alpha and near-UV spectroscopy are presented of Gliese 890, a single M dwarf of the BY Draconis type with the shortest known period of rotation among field stars of its type. The continuum light curves exhibit modulations characteristic of the presence of localized dark spot regions, and the spectra show corresponding modulations of the intensity of H-alpha emission, with the latter being substantially in phase with the former. Secular changes in the continuum light curve indicate that the geometry of the spots changes appreciably over time scales of the order of 60 rotation periods. The overall chromospheric activity is not significantly greater than that found in similar stars which rotate much more slowly. The principal active region present on the visible disk of the star during the observations appear to be at a remarkably high latitude compared to the occurrence of such regions on the sun. 25 refs.</description><subject>640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources</subject><subject>Astronomy</subject><subject>ATMOSPHERES</subject><subject>BALMER LINES</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>DWARF STARS</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>MOTION</subject><subject>Radii and surface features (starspots, etc.)</subject><subject>ROTATION</subject><subject>SPECTRA</subject><subject>SPECTROPHOTOMETRY</subject><subject>STARS</subject><subject>STARSPOTS</subject><subject>STELLAR ACTIVITY</subject><subject>STELLAR ATMOSPHERES</subject><subject>Stellar characteristics and properties</subject><subject>STELLAR CHROMOSPHERES</subject><subject>ULTRAVIOLET SPECTRA</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNo90E1LxDAQgOEgCq6r_oYg4q2aj-brKIvuCiteXPBWxiTtRmpbkqj039ul4mkYeGYOL0KXlNxSouUdlZqX6ggtqOC6KLlQx2hBCCkLydXbKTpL6eOwMmMWaLcJzb5oIYf85TxOQ58xdA4PLTQeg83hO-QR9x3Oe48jDMG1I459ni66Bj9j9wOxxilDxOs2-OSxNuQcndTQJn_xN5do9_jwutoU25f10-p-W1imVC6g1LSURCvviTNOCmsVU9ozarhgNbWEvytZa-2c4sApFaQUTDNCnDPWcL5EV_PfPuVQJRuyt3vbd523uVKUi6nAhG5mZGOfUvR1NcTwCXGsKKkOxaq52ASvZzhAstDWETob0r-WmgluFP8Fg7BnoQ</recordid><startdate>19900201</startdate><enddate>19900201</enddate><creator>YOUNG, A</creator><creator>SKUMANICH, A</creator><creator>MACGREGOR, K. B</creator><creator>TEMPLE, S</creator><general>University of Chicago Press</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19900201</creationdate><title>High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890</title><author>YOUNG, A ; SKUMANICH, A ; MACGREGOR, K. B ; TEMPLE, S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c277t-a48146087ee0d9d65cc7278e219352f1c03b76f88dd73a311504528200dd9c933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources</topic><topic>Astronomy</topic><topic>ATMOSPHERES</topic><topic>BALMER LINES</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>DWARF STARS</topic><topic>Earth, ocean, space</topic><topic>Exact sciences and technology</topic><topic>MOTION</topic><topic>Radii and surface features (starspots, etc.)</topic><topic>ROTATION</topic><topic>SPECTRA</topic><topic>SPECTROPHOTOMETRY</topic><topic>STARS</topic><topic>STARSPOTS</topic><topic>STELLAR ACTIVITY</topic><topic>STELLAR ATMOSPHERES</topic><topic>Stellar characteristics and properties</topic><topic>STELLAR CHROMOSPHERES</topic><topic>ULTRAVIOLET SPECTRA</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>YOUNG, A</creatorcontrib><creatorcontrib>SKUMANICH, A</creatorcontrib><creatorcontrib>MACGREGOR, K. B</creatorcontrib><creatorcontrib>TEMPLE, S</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>YOUNG, A</au><au>SKUMANICH, A</au><au>MACGREGOR, K. B</au><au>TEMPLE, S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890</atitle><jtitle>The Astrophysical journal</jtitle><date>1990-02-01</date><risdate>1990</risdate><volume>349</volume><issue>2</issue><spage>608</spage><epage>619</epage><pages>608-619</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><coden>ASJOAB</coden><abstract>Simultaneous time-resolved observations in broadband photometry and in H-alpha and near-UV spectroscopy are presented of Gliese 890, a single M dwarf of the BY Draconis type with the shortest known period of rotation among field stars of its type. The continuum light curves exhibit modulations characteristic of the presence of localized dark spot regions, and the spectra show corresponding modulations of the intensity of H-alpha emission, with the latter being substantially in phase with the former. Secular changes in the continuum light curve indicate that the geometry of the spots changes appreciably over time scales of the order of 60 rotation periods. The overall chromospheric activity is not significantly greater than that found in similar stars which rotate much more slowly. The principal active region present on the visible disk of the star during the observations appear to be at a remarkably high latitude compared to the occurrence of such regions on the sun. 25 refs.</abstract><cop>Chicago, IL</cop><pub>University of Chicago Press</pub><doi>10.1086/168347</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0004-637X |
| ispartof | The Astrophysical journal, 1990-02, Vol.349 (2), p.608-619 |
| issn | 0004-637X 1538-4357 |
| language | eng |
| recordid | cdi_osti_scitechconnect_7135538 |
| source | Alma/SFX Local Collection |
| subjects | 640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources Astronomy ATMOSPHERES BALMER LINES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DWARF STARS Earth, ocean, space Exact sciences and technology MOTION Radii and surface features (starspots, etc.) ROTATION SPECTRA SPECTROPHOTOMETRY STARS STARSPOTS STELLAR ACTIVITY STELLAR ATMOSPHERES Stellar characteristics and properties STELLAR CHROMOSPHERES ULTRAVIOLET SPECTRA |
| title | High-latitude spot and plage activity on the rapidly rotating M dwarf star Gliese 890 |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-15T17%3A15%3A02IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-pascalfrancis_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=High-latitude%20spot%20and%20plage%20activity%20on%20the%20rapidly%20rotating%20M%20dwarf%20star%20Gliese%20890&rft.jtitle=The%20Astrophysical%20journal&rft.au=YOUNG,%20A&rft.date=1990-02-01&rft.volume=349&rft.issue=2&rft.spage=608&rft.epage=619&rft.pages=608-619&rft.issn=0004-637X&rft.eissn=1538-4357&rft.coden=ASJOAB&rft_id=info:doi/10.1086/168347&rft_dat=%3Cpascalfrancis_osti_%3E6825397%3C/pascalfrancis_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |