SIMBAD references

2009ApJ...696.1355L - Astrophys. J., 696, 1355-1366 (2009/May-2)

A HIRES/Keck spectroscopic investigation of the measurement of sodium in the atmosphere of HD 209458b.

LANGLAND-SHULA L.E., VOGT S.S., CHARBONNEAU D., BUTLER P. and MARCY G.

Abstract (from CDS):

We present high-resolution High Resolution Echelle Spectrometer (HIRES)/Keck spectra of HD 209458, and a Monte Carlo variation on the basic method used by other workers, to look for the excess in-transit absorption in the NaD doublet at 5893 Å due to the extrasolar planet. The HIRES data, binned by bandpass, allow a direct comparison with previous results. We find >3σ results in most test bandpasses around the NaD doublet, including relative absorption of (-108.8±25.7)x10–5 in the "narrow" bandpass used by other workers. This is ~4.7 times larger than the "narrow" results reported by Charbonneau et al. for HD 209458b. However, >2σ absorption is detected in some weak Fe I and Ni I lines that were tested for comparison, raising concern about the uncertainties introduced by continuum-fitting and terrestrial atmosphere subtraction.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: atmospheres - stars: individual: HD 209458 - techniques: photometric

Simbad objects: 7

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2020.01.20-13:55:51

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