2005A&A...443L..15B


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET20:40:20

2005A&A...443L..15B - Astronomy and Astrophysics, volume 443, L15-18 (2005/12-1)

The HARPS search for southern extra-solar planets. VI. A Neptune-mass planet around the nearby M dwarf Gl 581.

BONFILS X., FORVEILLE T., DELFOSSE X., UDRY S., MAYOR M., PERRIER C., BOUCHY F., PEPE F., QUELOZ D. and BERTAUX J.-L.

Abstract (from CDS):

We report the discovery of a Neptune-mass planet around Gl 581 (M3V, M=0.31M), based on precise Doppler measurements with the HARPS spectrograph at La Silla Observatory. The radial velocities reveal a circular orbit of period P=5.366-days and semi-amplitude K1=13.2m/s. The resulting minimum mass of the planet (M2 sin i) is only 0.052 MJup=0.97MNep=16.6MEarth making Gl 581b one of the lightest extra-solar planet known to date. The Gl 581 planetary system is only the third centered on an M dwarf, joining the Gl 876 three-planet system and the lone planet around Gl 436. Its discovery reinforces the emerging tendency of such planets to be of low mass, and found at short orbital periods. The statistical properties of the planets orbiting M dwarfs do not seem to match a simple mass scaling of their counterparts around solar-type stars.

Abstract Copyright:

Journal keyword(s): stars: individual: Gl 581 - stars: planetary systems - stars: late-type - techniques: radial-velocity

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * rho01 Cnc PM* 08 52 35.8113282132 +28 19 50.956901366 7.45 6.82   5.4   K0IV-V 993 1
2 Ross 905b Pl 11 42 11.0933874353 +26 42 23.658083337           ~ 637 1
3 Ross 905 PM* 11 42 11.0933874353 +26 42 23.658083337   12.06 10.613 10.272 8.24 M3V 518 1
4 BD-07 4003 BY* 15 19 26.8271336166 -07 43 20.190958776 13.403 11.76 10.560 9.461 8.911 M3V 550 2
5 BD-07 4003b Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 75 1
6 OGLE-TR 56 EB* 17 56 35.5015759807 -29 32 21.476706712     16.560 16.07 15.30 ~ 160 1
7 HD 180617 Ro* 19 16 55.2565250393 +05 10 08.038856129 11.768 10.63 9.115 8.076 6.782 M3-V 364 0
8 HD 204961 PM* 21 33 33.9749932664 -49 00 32.403471949 11.359 10.176 8.672 7.665 6.479 M2/3V 220 1
9 BD-15 6290d Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 137 1
10 BD-15 6290 BY* 22 53 16.7323107416 -14 15 49.303409936 12.928 11.749 10.192 9.013 7.462 M3.5V 877 1
11 * 51 Peg b Pl 22 57 27.9804167474 +20 46 07.782240714           ~ 546 1
12 * 51 Peg Ro* 22 57 27.9804167474 +20 46 07.782240714 6.39 6.16 5.46 4.97 4.61 G2IV 1089 1
13 V* BR Psc BY* 23 49 12.5251391270 +02 24 04.403044891 11.532 10.427 8.993 8.029 6.946 dM1 290 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-20:40:20

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