Table 1
Log of the spectroscopic (and polarimetric) observations of Vega.
| Date | JDfirst | JDlast | N spec | texp (s) | tcov (h) | S/N |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
|
|
||||||
| Jul. 26 2008 | 4674.3489 | 4674.6072 | 389 | 6 | 6.2 | 812 ± 50 |
| Jul. 27 2008 | 4675.3748 | 4675.6551 | 390 | 6 | 6.7 | 822 ± 61 |
| Jul. 29 2008 | 4677.3480 | 4677.6415 | 434 | 6 | 7.0 | 823 ± 82 |
|
|
||||||
| Sep. 9 2009 | 5083.7400 | 5083.9066 | 402 | 4 | 4.0 | 865 ± 85 |
| Sep. 10 2009 | 5084.7111 | 5084.8787 | 331 | 4 | 4.0 | 887 ± 69 |
| Sep. 11 2009 | 5085.7122 | 5085.9498 | 560 | 4 | 5.7 | 736 ± 155 |
|
|
||||||
| Jul. 15 2010 | 5393.3643 | 5393.5735 | 355 | 13 | 5.0 | 1117 ± 37 |
| Jul. 16 2010 | 5394.3635 | 5394.6576 | 496 | 13 | 7.1 | 1051 ± 158 |
| Jul. 17 2010 | 5395.3650 | 5395.6510 | 453 | 13 | 6.9 | 1197 ± 59 |
| Jul. 18 2010 | 5396.3580 | 5396.4662 | 185 | 13 | 2.6 | 1222 ± 16 |
| Jul. 19 2010 | 5397.3561 | 5397.6569 | 483 | 13 | 7.2 | 1170 ± 70 |
Notes. (1) Date of the observation (UT) (Petit et al. (2010) indicates the date in local time, leading to a −1 day shift for the Sept. 2009 CFHT data). (2) and (3) heliocentric Julian date (mean observation, 2 450 000+) of the first and the last stellar spectrum of the night, respectively; (4) number of high resolution RS Cha spectra; (5) exposure time (s); (6) total hours covered on the sky; (7) nightly average and standard deviation of signal to noise per resolved element at 520 nm.
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