2001A&A...380..630C


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.24CET16:34:51

2001A&A...380..630C - Astronomy and Astrophysics, volume 380, 630-644 (2001/12-3)

Stellar parameters for Pop II A-type stars from IUE spectra and new-ODF ATLAS9 model atmospheres.

CASTELLI F. and CACCIARI C.

Abstract (from CDS):

Stellar parameters for twenty-seven field horizontal branch A-type stars, a post-AGB star (BD+32 2188), and a possible cool sdB star (BD+00 0145) were obtained by fitting the whole IUE energy distributions taken from the IUE-INES archive to the ultraviolet energy distributions predicted by new-ODF ATLAS9 model atmospheres, which include the Lyman-α H-H+ and H-H quasi-molecular absorptions near 1400Å and 1600Å. The sample of stars was extensively studied by Kinman et al. (2000A&A...364..102K), who derived stellar parameters for them by using visual observations and also an ultraviolet color index. The effective temperatures obtained by fitting the IUE spectra to the new-ODF models agree with Teff derived by Kinman et al. (2000A&A...364..102K) for most of the stars in the sample. The gravities from UV agree with those from Kinman et al. (2000A&A...364..102K) for stars hotter than about 8700K, while they are lower, on average, by 0.3dex for the cooler stars. The same discrepancy is present when logg from the ultraviolet energy distribution is compared with logg from the visible energy distribution. The difference is insensitive to reddening, microturbulent velocity, metallicity, or mixing-length parameter for the treatment of the convection.

Abstract Copyright:

Journal keyword(s): stars: atmospheres - stars: fundamental parameters - ultraviolet: stars

Simbad objects: 32

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Number of rows : 32

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 2857 HB* 00 31 53.7907866181 -05 15 42.873649389 10.52 10.17 9.98     A2IV 99 0
2 HD 4850 PM* 00 50 00.1734485782 -47 17 31.920421069   9.67 9.64     A0V 19 0
3 BD+00 145 PM* 00 56 27.0393561356 +01 43 42.751995782   10.74 10.6     AV 19 0
4 HD 8376 HB* 01 23 28.2882633238 +31 47 12.258810678   9.74 9.61     A0 17 0
5 HD 13780 PM* 02 12 51.3683401182 -49 03 17.090059472   9.90 9.83     A1IV 21 0
6 HD 14829 PM* 02 23 09.2477244745 -10 40 39.280273796 10.37 10.31 10.29     sdA0IVHe0 47 0
7 V* CS Eri RR* 02 37 05.7588255738 -42 57 48.034534805   9.25 9.03     A2/3(IIw) 62 0
8 HD 31943 PM* 04 57 40.6126405793 -43 01 57.499482560   8.38 8.25     A2IV 26 0
9 HD 252940 HB* 06 11 37.2505297939 +26 27 30.114718188   9.31 9.03     ~ 21 0
10 HD 60778 HB* 07 36 11.7735389060 -00 08 15.571097984 9.34 9.20 9.10     A0III/IV 104 0
11 HD 74721 HB* 08 45 59.2617958540 +13 15 48.592813847 8.88 8.75 8.72     A0V 139 0
12 HD 78913 HV* 09 06 54.8320495445 -68 29 21.948571987   9.34 9.29     A0V 33 0
13 * 7 Sex PM* 09 52 12.1642737011 +02 27 14.864758128 5.90 5.98   6.0   A0III/IV 112 0
14 HD 86986 HB* 10 02 29.5663012359 +14 33 25.190707124 8.27 8.11   7.9   A1V 167 0
15 HD 87047 HB* 10 03 12.7496361930 +31 03 19.064593865   9.85 9.74     A0 19 0
16 HD 87112 PM* 10 04 38.7703466612 +57 49 56.109313292   9.68 9.71     A0 18 0
17 HD 93329 HB* 10 46 36.6445338103 +11 11 02.847652309 8.980 8.880 8.800     A0 47 0
18 BD+32 2188 * 11 47 00.5017526952 +31 50 08.638344910   10.66 10.65     B8/9V 48 0
19 HD 106304 PM* 12 13 53.5602260910 -40 52 24.673618616   9.10 9.07     B9V 42 0
20 BD+42 2309 * 12 28 22.1632026428 +41 38 52.419947159   10.80 10.82     A0 40 0
21 HD 109995 HB* 12 38 47.5986540271 +39 18 31.629329712 7.83 7.68   7.6   A0V 216 0
22 BD+25 2602 HB* 13 09 25.5878622195 +24 19 25.100940495   10.14 10.04     A0 32 0
23 HD 117880 PM* 13 33 29.8063227339 -18 30 54.292408049 9.14 9.12 9.06     B9IV/V 93 0
24 HD 128801 HB* 14 38 48.0932646734 +07 54 40.357218683   8.71 8.74     B9 44 0
25 HD 130095 PM* 14 46 51.2129052458 -27 14 53.964438579 8.28 8.20 8.12     B9V 90 0
26 HD 130201 * 14 48 19.9117705849 -45 40 12.122673266   10.15 10.07     A0IV/V 23 0
27 HD 139961 PM* 15 42 52.8189421429 -44 56 40.802938466   8.94 8.86     A0V 56 0
28 HD 161817 HB* 17 46 40.6294905277 +25 44 56.936928236 7.23 7.13 6.97     sdA2 258 0
29 HD 167105 HB* 18 11 06.3098911629 +50 47 32.411866865 9.020 8.970 8.950     A0 34 0
30 HD 180903 PM* 19 19 16.2900663846 -24 23 10.940891960   9.78 9.55     A1III 18 0
31 V* AW Mic RR* 21 19 05.9163199718 -33 55 07.920219374   9.29 9.05     A0(III)w 45 0
32 HD 213468 * 22 32 17.2393800103 -42 34 48.580910893   10.88 10.78     B9IV 38 0

    Equat.    Gal    SGal    Ecl

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2021.01.24-16:34:51

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