Limits on the 2.2- m contrast ratio of the close-orbiting planet HD 189733b
نویسندگان
چکیده
منابع مشابه
Limits on the 2 . 2 μ m contrast ratio of the close orbiting planet
We obtained 238 spectra of the close orbiting extrasolar giant planet HD 189733b with resolution R ∼ 15, 000 during one night of observations with the near infrared spectrograph, NIRSPEC, at the Keck II Telescope. We have searched for planetary absorption signatures in the 2.0 μm 2.4 μm region where H2O and CO are expected to be the dominant atmospheric opacities. We employ a phase dependent or...
متن کاملSTRONG INFRARED EMISSION FROM THE EXTRASOLAR PLANET HD 189733b
We report detection of strong infrared thermal emission from the nearby (d 1⁄4 19 pc) transiting extrasolar planet HD 189733b by measuring the flux decrement during its prominent secondary eclipse. A 6 hr photometric sequence using Spitzer’s infrared spectrograph in peak-up imaging mode at 16 m shows the secondary eclipse depth to be 0:551% 0:030%, with accuracy limited by instrumental baseline...
متن کاملPRIMARY TRANSIT OF THE PLANET HD 189733b AT 3.6 AND 5.8 m
The hot Jupiter HD 189733bwas observed during its primary transit using the InfraredArray Camera on the Spitzer Space Telescope. The transit depths were measured simultaneously at 3.6 and 5.8 m. Our analysis yields values of 2:356% 0:019% and 2:436% 0:020% at 3.6 and 5.8 m, respectively, for a uniform source. We estimated the contribution of the limb-darkening and starspot effects on the final ...
متن کاملNear infrared spectroscopic search for the close orbiting planet HD 75289 b
We present a search for the near infrared spectroscopic signature of the close orbiting extrasolar giant planet HD 75289b. We obtained ∼230 spectra in the wavelength range 2.18 μm 2.19 μm using the Phoenix spectrograph at Gemini South. By considering the direct spectrum, derived from irradiated model atmospheres, we search for the absorption profile signature present in the combined star and pl...
متن کاملRefined Parameters of the Planet Orbiting Hd 189733
We report on the BVRI multi-band follow-up photometry of the transiting extrasolar planet HD 189733b. We revise the transit parameters and find planetary radius R P = 1.154 ± 0.032R J and inclination i P = 85.79 ± 0.24 •. The new density (∼ 1g cm −3) is significantly higher than the former estimate (∼ 0.75g cm −3); this shows that from the current sample of 9 transiting planets, only HD 209458 ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2007
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2007.12394.x