A JUPITER-LIKE PLANET ORBITING THE NEARBY M DWARF GJ 832

被引:69
作者
Bailey, Jeremy [1 ]
Butler, R. Paul [2 ]
Tinney, C. G. [3 ]
Jones, Hugh R. A. [4 ]
O'Toole, Simon [4 ,5 ]
Carter, Brad D. [6 ]
Marcy, Geoffrey W. [7 ]
机构
[1] Macquarie Univ, Dept Phys, N Ryde, NSW 2109, Australia
[2] Carnegie Inst Washington, Dept Terr Magnetism, Washington, DC 20015 USA
[3] Univ New S Wales, Sch Phys, Dept Astrophys, Sydney, NSW 2052, Australia
[4] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England
[5] Anglo Australian Observ, Epping, NSW 1710, Australia
[6] Univ So Queensland, Fac Sci, Toowoomba, Qld 4350, Australia
[7] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
关键词
planetary systems; stars: individual (GJ 832); ANGLO-AUSTRALIAN PLANET; EXTRA-SOLAR PLANETS; M-CIRCLE-PLUS; PARENT STARS; GIANT PLANET; HARPS SEARCH; MASS PLANETS; HOST STARS; MILKY-WAY; SYSTEM;
D O I
10.1088/0004-637X/690/1/743
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Precision Doppler velocity measurements from the Anglo-Australian Telescope reveal a planet with a 9.4 +/- 0.4 year period orbiting the M1.5 dwarf GJ 832. Within measurement uncertainty the orbit is circular, and the minimum mass (m sin i) of the planet is 0.64 +/- 0.06 M(JUP). GJ 832 appears to be depleted in metals by at least 50% relative to the Sun, as are a significant fraction of the M dwarfs known to host exoplanets. GJ 832 adds another Jupiter-mass planet to the known census of M dwarf exoplanets, which currently includes a significant number of Neptune-mass planets. GJ 832 is an excellent candidate for astrometric orbit determination with alpha sin i = 0.95 mas. GJ 832b has the second largest angular distance from its star among radial velocity detected exoplanets (0.69 arcsec) making it a potentially interesting target for future direct detection.
引用
收藏
页码:743 / 747
页数:5
相关论文
共 64 条
[31]   Toward a deterministic model of planetary formation. III. Mass distribution of short-period planets around stars of various masses [J].
Ida, S ;
Lin, DNC .
ASTROPHYSICAL JOURNAL, 2005, 626 (02) :1045-1060
[32]   A new planet around an M dwarf: Revealing a correlation between exoplanets and stellar mass [J].
Johnson, John Asher ;
Butler, R. Paul ;
Marcy, Geoffrey W. ;
Fischer, Debra A. ;
Vogt, Steven S. ;
Wright, Jason T. ;
Peek, Kathryn M. G. .
ASTROPHYSICAL JOURNAL, 2007, 670 (01) :833-840
[33]   An exoplanet in orbit around τ1 Gruis [J].
Jones, HRA ;
Butler, RP ;
Tinney, CG ;
Marcy, GW ;
Penny, AJ ;
McCarthy, C ;
Carter, BD .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 341 (03) :948-952
[34]   Extrasolar planets around HD 196050, HD 216437 and HD 160691 [J].
Jones, HRA ;
Butler, RP ;
Marcy, GW ;
Tinney, CG ;
Penny, AJ ;
McCarthy, C ;
Carter, BD .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 337 (04) :1170-1178
[35]   A probable planetary companion to HD 39091 from the Anglo-Australian Planet Search [J].
Jones, HRA ;
Butler, RP ;
Tinney, CG ;
Marcy, GW ;
Penny, AJ ;
McCarthy, C ;
Carter, BD ;
Pourbaix, D .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 333 (04) :871-875
[36]   High-eccentricity planets from the Anglo-Australian Planet Search [J].
Jones, Hugh R. A. ;
Butler, R. Paul ;
Tinney, C. G. ;
Marcy, Geoffrey W. ;
Carter, Brad D. ;
Penny, Alan J. ;
McCarthy, Chris ;
Bailey, Jeremy .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 369 (01) :249-256
[37]   Planet formation around stars of various masses: The snow line and the frequency of giant planets [J].
Kennedy, Grant M. ;
Kenyon, Scott J. .
ASTROPHYSICAL JOURNAL, 2008, 673 (01) :502-512
[38]   UBV(RI )C photometry of Hipparcos red stars [J].
Koen, C ;
Kilkenny, D ;
van Wyk, F ;
Cooper, D ;
Marang, F .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 334 (01) :20-38
[39]   The core accretion model predicts few Jovian-mass planets orbiting red dwarfs [J].
Laughlin, G ;
Bodenheimer, P ;
Adams, FC .
ASTROPHYSICAL JOURNAL, 2004, 612 (01) :L73-L76
[40]   A pair of resonant planets orbiting GJ 876 [J].
Marcy, GW ;
Butler, RP ;
Fischer, D ;
Vogt, SS ;
Lissauer, JJ ;
Rivera, EJ .
ASTROPHYSICAL JOURNAL, 2001, 556 (01) :296-301