2000A&A...353L..33K

Query : 2000A&A...353L..33K

2000A&A...353L..33K - Astronomy and Astrophysics, volume 353L33-36 (2000/1-3)

An extrasolar giant planet in an Earth-like orbit. Precise radial velocities of the young star ι Horologii = HR 810.

KUERSTER M., ENDL M., ELS S., HATZES A.P., COCHRAN W.D., DOEBEREINER S. and DENNERL K.

Abstract (from CDS):

We present 5 1/2 years of radial velocity (RV) monitoring with the ESO CES of the young (ZAMS) G0V star ι Hor. We find a Keplerian signal with a period of 320.1 d indicative of an orbiting planet with minimum mass msin i=2.26MJup. With an eccentricity of 0.161 and a semi-major axis of 0.925 AU this object moves in the most Earth-like orbit found so far among extrasolar planets. ι Hor is the youngest star with a known planet. In addition to the planetary signal we find an excess RV scatter of 27.0m/s rms exceeding our measurement precision of 17.4m/s and probably due to stellar activity.

Abstract Copyright: ∼

Journal keyword(s): stars: planetary systems - stars: individual: ι Hor - stars: rotation - techniques: radial velocities

Simbad objects: 5

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Number of rows : 5
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 * iot Hor PM* 02 42 33.4666679022 -50 48 01.055138166   5.97 5.40     F8V 446 1
3 * iot Hor b Pl 02 42 33.4666679022 -50 48 01.055138166           ~ 55 1
4 [SFK93] 2007+777 G1 G ~ ~           ~ 2 0
5 [SFK93] 2007+777 G2 G ~ ~           ~ 2 0

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