2001A&A...371..260M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.26CET23:36:35

2001A&A...371..260M - Astronomy and Astrophysics, volume 371, 260-266 (2001/5-3)

Search for spectroscopical signatures of transiting HD 209458b's exosphere.

MOUTOU C., COUSTENIS A., SCHNEIDER J., ST GILLES R., MAYOR M., QUELOZ D. and KAUFER A.

Abstract (from CDS):

Following recent attempts to detect the exosphere of the extra-solar planet 51 Pegb in the infrared (Coustenis et al., 1997, ASP Conf. Ser., 119, 101, 1998, ASP Conf. Ser., 134, 296; Rauer et al., 2000A&A...355..573R), we discuss here a search for optical spectroscopic signatures from a gaseous extended envelope (called exosphere) surrounding the planet HD 209458b. This planet has a demonstrated photometric transit (Charbonneau et al., 2000ApJ...529L..45C; Henry et al., 2000ApJ...529L..41H), thus offering an increased probability for the spectroscopic detection of such an envelope. Therefore it is the best known candidate for probing the exospheric composition of a giant planet, orbiting a Sun-like star at a short distance. The observations were performed with UVES at the VLT and cover most of the 328-669nm range. We did not detect HD 209458b's exosphere at a level of 1%, a value close to the predictions. We discuss here the first results obtained and their limitations, as well as future prospective.

Abstract Copyright:

Journal keyword(s): techniques: spectroscopic - stars: atmosphere - stars: planetary systems

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * 29 Psc V* 00 01 49.4471402460 -03 01 39.021673975 4.47 4.98 5.10     B7III-IV 204 0
2 HD 209458 V* 22 03 10.7729598762 +18 53 03.548248479   8.21 7.63     F9V 1000 1
3 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1504 1
4 * 74 Aqr a2* 22 53 28.7050718506 -11 36 59.449250208 5.41 5.709 5.780     B8IV/V 144 2

    Equat.    Gal    SGal    Ecl

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2020.10.26-23:36:35

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