|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
26 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Detection of oxygen and carbon in the hydrodynamically escaping atmosphere of the extrasolar planet HD209458b | | A. Vidal-Madjar
; J.-M. Désert
; A. Lecavelier des Etangs
; G. Hébrard
; G.E. Ballester
; D. Ehrenreich
; R. Ferlet
; J.C. McConnell
; M. Mayor
; C.D. Parkinson
; | | Date: |
22 Dec 2003 | | Journal: | Astrophys.J. 604 (2004) L69 | | Subject: | astro-ph | | Affiliation: | IAP), G.E. Ballester (LPL), D. Ehrenreich, R. Ferlet (IAP), J.C. McConnell (York Univ.), M. Mayor (Obs. de Genève), C.D. Parkinson (JPL | | Abstract: | Four transits of the planet orbiting the star HD209458 were observed with the STIS spectrograph on board HST. The wavelength domain (1180-1710A) includes HI as well as CI, CII, CIV, NV, OI, SI, SiII, SiIII and SiIV lines. During the transits, absorptions are detected in HI, OI and CII (5+/-2%, 13+/-4.5% and 7.5+/-3.5%, respectively). No absorptions are detected for other lines. The 5% mean absorption over the whole HI Lyman alpha line is consistent with the previous detection at higher resolution (Vidal-Madjar et al. 2003). The absorption depths in OI and CII show that oxygen and carbon are present in the extended upper atmosphere of HD209458b. These species must be carried out up to the Roche lobe and beyond, most likely in a state of hydrodynamic escape. | | Source: | arXiv, astro-ph/0401457 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER