2002ApJ...575..474M


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.15CEST22:11:08

2002ApJ...575..474M - Astrophys. J., 575, 474-483 (2002/August-2)

Keck NIRSPEC infrared OH lines: oxygen abundances in metal-poor stars down to [Fe/H] = -2.9.

MELENDEZ J. and BARBUY B.

Abstract (from CDS):

Infrared OH lines at 1.5-1.7 µm in the H band were obtained with the NIRSPEC high-resolution spectrograph at the 10 m Keck Telescope for a sample of seven metal-poor stars. Detailed analyses have been carried out, based on optical high-resolution data obtained with the Fiber-fed Extended Range Optical Spectrograph at ESO. Stellar parameters were derived by adopting infrared flux method effective temperatures, trigonometric and/or evolutionary gravities, and metallicities from Fe II lines. We obtain that the sample stars with metallicities [Fe/H]←2.2 show a mean oxygen abundance [O/Fe]~0.54 for a solar oxygen abundance of ε(O)=8.87, or [O/Fe]~0.64 if ε(O)=8.77 is assumed.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - Stars: Abundances - Stars: Population II

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 2665 PM* 00 30 45.4467882867 +57 03 53.626973228 8.66 8.51 7.72     G5IIIw 169 0
2 HD 2796 Pe* 00 31 16.9149599675 -16 47 40.792690842 9.58 9.28 8.50 8.14 8.67 Fw 182 0
3 HD 6268 Pe* 01 03 18.1719480473 -27 52 49.953588224   9.725 9.046 8.601   F/Gw 138 0
4 * mu. Cas SB* 01 08 16.39470 +54 55 13.2264 5.93 5.86 5.17 4.55 4.13 G5Vb 551 1
5 HD 6755 SB* 01 09 43.0595349996 +61 32 50.293373799 8.48 8.40   7.3   G5 230 0
6 BD-18 271 Pe* 01 37 18.8811363974 -17 29 03.906643856   10.93 9.77     KIIvw 59 0
7 HD 21581 Pe* 03 28 54.4846692612 -00 25 03.106157430 9.75 9.54 8.71     G8w 120 0
8 HD 25329 PM* 04 03 14.9983565018 +35 16 23.806254921 9.75 9.37 8.50 7.75 7.23 K1VbFe-2 351 0
9 HD 26297 Pe* 04 09 03.4179730777 -15 53 27.057216777   8.55 7.47 7.09   G5/6IVw 144 0
10 BD+06 648 Pe* 04 13 13.1128198299 +06 36 01.767784301   10.27 9.09 8.58   K0 96 0
11 V* HP Eri LP* 04 38 55.7330333369 -13 20 48.133826226 10.91 9.72 8.33     G8/K0IIIwF7 127 0
12 HD 37828 Pe* 05 40 54.6448086996 -11 12 00.190392856   7.988 6.869     G8III 91 0
13 HD 103095 PM* 11 52 58.7683801554 +37 43 07.240082865 7.38 7.20 6.45 5.80 5.35 K1V_Fe-1.5 756 1
14 HD 110184 Pe* 12 40 14.0784174923 +08 31 38.056629204 10.20 9.45 8.27 8.52   KIIvw 131 0
15 HD 122956 PM* 14 05 13.0245301143 -14 51 25.455585497   8.18 7.25 6.88   G6IV/VwF6 145 0
16 HD 134440 PM* 15 10 12.9678041572 -16 27 46.510775897 10.69 10.217 9.426 8.913 8.441 K2V 263 0
17 V* V2564 Oph LP? 18 04 40.0713993238 +03 46 44.716089845 9.53 8.59 7.30 6.24 5.43 F6/7V 246 0
18 HD 187111 Pe* 19 48 39.5745673482 -12 07 19.741286114   8.92 7.75     G8wF8III/IV 133 0
19 BD-18 5550 Pe* 19 58 49.7370363913 -18 12 11.142309703 10.18 10.03 9.35 9.04 8.74 CEMP-no 166 0
20 HD 206739 PM* 21 44 23.9463878252 -11 46 22.846895572   9.45 8.60 8.14   G5V 76 0
21 HD 216143 Pe* 22 50 31.0884300128 -06 54 49.557528724   8.78 7.81 7.44   G2/3(IV)(we) 132 0
22 HD 221170 Pe* 23 29 28.8087923676 +30 25 57.847432750 9.43 8.74 7.66     G2IV 270 0

    Equat.    Gal    SGal    Ecl

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2021.05.15-22:11:08

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