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Table 1

Spectroscopically observed stars encompassing NGC 7790.

ID RA/Dec (J2000) SpTa Vsini (km s-1)b Teff (±100 K)b log g (±0.03 dex)b

0c 23:58:07.40 +61:11:44.9 B1V 150 24 500 4.11
1 23:58:28.10 +61:12:03.1 B5IV 170 14 700 3.63
2 23:58:23.19 +61:12:25.0 B7IV 220 13 400 3.72
3 23:58:29.05 +61:12:41.4 B8IV 0 13 400 3.98
4 23:58:30.68 +61:12:18.7 B8IV 190 14 000 3.60
5 23:58:31.32 +61:12:49.8 B6IV 190 13 000 3.73

Notes.

(a)

Classified by visual inspection using the precepts outlined by Gray & Corbally (2009).

(b)

Inferred from synthetic spectra fits to the observations (Sect. 2.2.1). The statistical uncertainties produced by the fitting routine are cited and may underestimate the combined uncertainty by 2–4× (Napiwotzki 1999, priv. comm.).

(c)

Spectroscopic parameters for evolved M 25 stars are also presented by Luck et al. (2000, their Table 2).

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