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| Query : 2003ApJ...597L.157S |
2003ApJ...597L.157S - Astrophys. J., 597, L157-L160 (2003/November-2)
A planetary companion to the G-type giant star HD 104985.
SATO B., ANDO H., KAMBE E., TAKEDA Y., IZUMIURA H., MASUDA S., WATANABE E., NOGUCHI K., WADA S., OKADA N., KOYANO H., MAEHARA H., NORIMOTO Y., OKADA T., SHIMIZU Y., URAGUCHI F., YANAGISAWA K. and YOSHIDA M.
Abstract (from CDS):
We report the detection of a planetary-mass companion to the G9 III giant star HD 104985 from precise Doppler velocity measurements made using the High Dispersion Echelle Spectrograph (HIDES) at Okayama Astrophysical Observatory. The radial velocity variability of this star is best explained by an orbital motion with a period of 198.2±0.3 days, a velocity semiamplitude of 161±2 m/s, and an eccentricity of 0.03±0.02. Assuming a stellar mass of 1.6 M☉, we obtained a minimum mass and a semimajor axis of 6.3MJ and 0.78 AU, respectively, for the companion. A probable upper limit to the stellar mass of 3 M☉yielded m2sini=9.6MJ, which falls in the planetary-mass regime. This is the first discovery of a planetary companion orbiting a G-type giant star.
Abstract Copyright: ∼
Journal keyword(s): Stars: Planetary Systems - Stars: Individual: Henry Draper Number: HD 104985 - Techniques: Radial Velocities
Simbad objects: 8
| Number of rows : 8 |
| N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2026 |
#notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | * tau Cet | PM* | 01 44 04.0831371922 | -15 56 14.927607677 | 4.43 | 4.22 | 3.50 | 2.88 | 2.41 | G8V | 1354 | 1 |
| 2 | HD 47536 | PM* | 06 37 47.6181076691 | -32 20 23.040481884 | 6.43 | 5.258 | K1III | 119 | 1 | |||
| 3 | HD 47536b | Pl | 06 37 47.6181076691 | -32 20 23.040481884 | ~ | 25 | 1 | |||||
| 4 | HD 104985 | HB* | 12 05 15.1171894272 | +76 54 20.642733144 | 5.2 | G8.5IIIb | 172 | 1 | ||||
| 5 | HD 104985b | Pl | 12 05 15.1171894272 | +76 54 20.642733144 | ~ | 31 | 1 | |||||
| 6 | * iot Dra | V* | 15 24 55.7738042889 | +58 57 57.837111857 | 5.68 | 4.45 | 3.29 | 2.51 | 1.91 | K2III | 428 | 1 |
| 7 | * iot Dra b | Pl | 15 24 55.7746265 | +58 57 57.834445 | ~ | 59 | 1 | |||||
| 8 | * 51 Peg | PM* | 22 57 27.9804852576 | +20 46 07.797040104 | 6.39 | 6.16 | 5.46 | 4.97 | 4.61 | G2IV | 1216 | 1 |
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