The Gaia-ESO Survey: The analysis of the hot-star spectra

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Table 3

Benchmark stars of spectral type O, B, and A, observed by GES.

Star	V (mag)	Spectral type	T_eff (K)	log g (cm s⁻²)	[Fe/H]
HD 93128 ⁽¹⁾	6.90	O3.5 V	49300	4.10	(sol.)
HD 319699 ⁽²⁾	9.63	O5 V	41 200	3.91	(sol.)
HD 163758 ⁽¹⁾	7.32	O6.5 Iafp	34600	3.28	(sol.)
HD 46202 ^(2,3)	8.19	O9.2 V	34900	4.13	(sol.)
HD 68450 ⁽¹⁾	6.44	O9.7 II	30600	3.30	(sol.)
θ Car ^(4,5)	2.76	B0 Vp	31 000	4.20	(sol.)
τ Sco ^{(4,5,6,7,8,9)}	2.81	B0.2 V	31 750	4.13	0.00
V900 Sco ^(10,11)	6.38	B0.7 Ia	22850	2.68	−0.11
γ Peg ^(4,6,12)	2.84	B2 IV	22350	3.82	+0.03
HD 35912 ^(13,14)	6.38	B2 V	18 750	4.00	−0.02
67 Oph ^{(11,15,16,17)}	3.93	B5 Ib	15 650	2.68	−0.03
HD 56613 ⁽⁴⁾	7.21	B8 V	13 000	3.92	…
134 Tau ⁽¹⁸⁾	4.87	B9 IV	10850	4.10	−0.05
o Peg ⁽¹⁷⁾	4.78	A1 IV	9373	3.73	+0.19
68 Tau ⁽¹⁹⁾	4.31	A2 IV	9000	4.00	+0.13
32 Gem ⁽²⁰⁾	6.47	A9 III	7240	2.14	−0.34

Notes. This list reproduces Table 6 of Pancino et al. (2017) and extends it with the additional benchmarks that have been used. For the hottest stars, solar metallicity is assumed. No metallicity determination could be found in the literature for HD 56613; for this star, solar metallicity was also assumed.

References. ⁽¹⁾Holgado et al. (2020), ⁽²⁾Holgado et al. (2018), ⁽³⁾Sota et al. (2014), ⁽⁴⁾Lefever et al. (2010), ⁽⁵⁾Hubrig et al. (2008), ⁽⁶⁾Nieva & Przybilla (2012), ⁽⁷⁾Simón-Díaz et al. (2006), ⁽⁷⁾Mokiem et al. (2005), ⁽⁹⁾Martins et al. (2012), ⁽¹⁰⁾Crowther et al. (2006), ⁽¹¹⁾Thompson et al. (2008), ⁽¹²⁾Morel & Butler (2008), ⁽¹³⁾Simón-Díaz (2010), ⁽¹⁴⁾Nieva & Simón-Díaz (2011), ⁽¹⁵⁾Searle et al. (2008), ⁽¹⁶⁾Maíz Apellániz et al. (2018), ⁽¹⁷⁾Prugniel et al. (2011), ⁽¹⁸⁾Smith & Dworetsky (1993), ⁽¹⁹⁾Burkhart & Coupry (1989), ⁽²⁰⁾Gray et al. (2001).

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