Ground-based observations of the β Cephei CoRoT main target HD 180 642: abundance analysis and mode identification

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Volume 506 / No 1 (October IV 2009)

A&A, 506 1 (2009) 269-280

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The CoRoT space mission: early results

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Table 3:

Logbook of the spectroscopic observations of HD 180 642 obtained between June 2005 and July 2007 (HJD 2 453 536.4-2 454 302.8; $\Delta T = 967.5$ days).
Instrument	N	HJD begin	HJD end	$\Delta$ T	$\langle S/N \rangle$	S/N-range	$T_{\rm exp}$	Resolution	Wavelength range
FEROS	224	2 453 881	2 454 302	967.5	186	[100,300]	[300,1200]	48 000	[3570,9215]
Sophie	24	2 454 265	2 454 275	10.1	106	[80,140]	[1400,1500]	40 000	[3873,6945]
Aurélie	14	2 453 536	2 453 544	8.1	93	[80,105]	900	25 000	[4530,4673]

For each instrument the number of high-quality spectra N (i.e., spectra with a S/N-ratio > 80 calculated in the region near 4550 $\AA$ ), the HJD, the time-span (in days), the average S/N-ratio, the range of S/N-ratios, the typical exposure times (in seconds), the resolution of the spectrograph and the wavelength range (in $\AA$ ) are given.

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