Photospheric imaging of the RS CVn system HR 1099
Spectropolarimetric, spectroscopic, and photometric observations of the RS CVn binary system HR 1099 = V711 Tau (K1IV+G5V) were made from Oct. 1988 to Jan. 1991. From Doppler imaging of the unpolarized spectra and the corresponding data, two maximum entropy images of the temperature distribution of...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 1992-11, Vol.265 (2), p.682-700 |
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| container_title | Astronomy and astrophysics (Berlin) |
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| creator | Donati, J.-F. Brown, S. F. Semel, M. Rees, D. E. Dempsey, R. C. Matthews, J. M. Henry, G. W. Hall, D. S. |
| description | Spectropolarimetric, spectroscopic, and photometric observations of the RS CVn binary system HR 1099 = V711 Tau (K1IV+G5V) were made from Oct. 1988 to Jan. 1991. From Doppler imaging of the unpolarized spectra and the corresponding data, two maximum entropy images of the temperature distribution of the active K1 subgiant at epochs 1988.9 and 1990.9 were derived. Zeeman-Doppler imaging of the circularly polarized spectra has led to the first magnetic maps of a star other than the sun. The fragmentary observations made at epoch 1989.6 suggest that the star's magnetic field lines were emerging radially and/or poloidally from an equatorial warm region at that time, quite likely one of these reconstructed in the 1988.9 temperature image. |
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F. ; Semel, M. ; Rees, D. E. ; Dempsey, R. C. ; Matthews, J. M. ; Henry, G. W. ; Hall, D. S.</creator><creatorcontrib>Donati, J.-F. ; Brown, S. F. ; Semel, M. ; Rees, D. E. ; Dempsey, R. C. ; Matthews, J. M. ; Henry, G. W. ; Hall, D. S.</creatorcontrib><description>Spectropolarimetric, spectroscopic, and photometric observations of the RS CVn binary system HR 1099 = V711 Tau (K1IV+G5V) were made from Oct. 1988 to Jan. 1991. From Doppler imaging of the unpolarized spectra and the corresponding data, two maximum entropy images of the temperature distribution of the active K1 subgiant at epochs 1988.9 and 1990.9 were derived. Zeeman-Doppler imaging of the circularly polarized spectra has led to the first magnetic maps of a star other than the sun. The fragmentary observations made at epoch 1989.6 suggest that the star's magnetic field lines were emerging radially and/or poloidally from an equatorial warm region at that time, quite likely one of these reconstructed in the 1988.9 temperature image.</description><identifier>ISSN: 0004-6361</identifier><identifier>CODEN: AAEJAF</identifier><language>eng</language><publisher>Legacy CDMS: EDP Sciences</publisher><subject>Astronomy ; Astrophysics ; Binary and multiple stars ; Earth, ocean, space ; Exact sciences and technology ; Spectroscopic binaries. 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S.</creatorcontrib><title>Photospheric imaging of the RS CVn system HR 1099</title><title>Astronomy and astrophysics (Berlin)</title><description>Spectropolarimetric, spectroscopic, and photometric observations of the RS CVn binary system HR 1099 = V711 Tau (K1IV+G5V) were made from Oct. 1988 to Jan. 1991. From Doppler imaging of the unpolarized spectra and the corresponding data, two maximum entropy images of the temperature distribution of the active K1 subgiant at epochs 1988.9 and 1990.9 were derived. Zeeman-Doppler imaging of the circularly polarized spectra has led to the first magnetic maps of a star other than the sun. The fragmentary observations made at epoch 1989.6 suggest that the star's magnetic field lines were emerging radially and/or poloidally from an equatorial warm region at that time, quite likely one of these reconstructed in the 1988.9 temperature image.</description><subject>Astronomy</subject><subject>Astrophysics</subject><subject>Binary and multiple stars</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Spectroscopic binaries. 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Close binaries</topic><topic>Stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Donati, J.-F.</creatorcontrib><creatorcontrib>Brown, S. F.</creatorcontrib><creatorcontrib>Semel, M.</creatorcontrib><creatorcontrib>Rees, D. E.</creatorcontrib><creatorcontrib>Dempsey, R. C.</creatorcontrib><creatorcontrib>Matthews, J. M.</creatorcontrib><creatorcontrib>Henry, G. W.</creatorcontrib><creatorcontrib>Hall, D. S.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><jtitle>Astronomy and astrophysics (Berlin)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Donati, J.-F.</au><au>Brown, S. F.</au><au>Semel, M.</au><au>Rees, D. E.</au><au>Dempsey, R. C.</au><au>Matthews, J. M.</au><au>Henry, G. W.</au><au>Hall, D. S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photospheric imaging of the RS CVn system HR 1099</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>1992-11-01</date><risdate>1992</risdate><volume>265</volume><issue>2</issue><spage>682</spage><epage>700</epage><pages>682-700</pages><issn>0004-6361</issn><coden>AAEJAF</coden><abstract>Spectropolarimetric, spectroscopic, and photometric observations of the RS CVn binary system HR 1099 = V711 Tau (K1IV+G5V) were made from Oct. 1988 to Jan. 1991. From Doppler imaging of the unpolarized spectra and the corresponding data, two maximum entropy images of the temperature distribution of the active K1 subgiant at epochs 1988.9 and 1990.9 were derived. Zeeman-Doppler imaging of the circularly polarized spectra has led to the first magnetic maps of a star other than the sun. The fragmentary observations made at epoch 1989.6 suggest that the star's magnetic field lines were emerging radially and/or poloidally from an equatorial warm region at that time, quite likely one of these reconstructed in the 1988.9 temperature image.</abstract><cop>Legacy CDMS</cop><pub>EDP Sciences</pub><tpages>19</tpages></addata></record> |
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| ispartof | Astronomy and astrophysics (Berlin), 1992-11, Vol.265 (2), p.682-700 |
| issn | 0004-6361 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_4408354 |
| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; EDP Sciences; NASA Technical Reports Server |
| subjects | Astronomy Astrophysics Binary and multiple stars Earth, ocean, space Exact sciences and technology Spectroscopic binaries. Close binaries Stars |
| title | Photospheric imaging of the RS CVn system HR 1099 |
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