2014A&A...562A..84R


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.12CEST09:04:50

2014A&A...562A..84R - Astronomy and Astrophysics, volume 562A, 84-84 (2014/2-1)

Normal A0-A1 stars with low rotational velocities. I. Abundance determination and classification.

ROYER F., GEBRAN M., MONIER R., ADELMAN S., SMALLEY B., PINTADO O., REINERS A., HILL G. and GULLIVER A.

Abstract (from CDS):

The study of rotational velocity distributions for normal stars requires an accurate spectral characterization of the objects in order to avoid polluting the results with undetected binary or peculiar stars. This piece of information is a key issue in the understanding of the link between rotation and the presence of chemical peculiarities. A sample of 47 low vsini A0-A1 stars (vsini<65km/s), initially selected as main-sequence normal stars, are investigated with high-resolution and high signal-to-noise spectroscopic data. The aim is to detect spectroscopic binaries and chemically peculiar stars, and eventually establish a list of confirmed normal stars. A detailed abundance analysis and spectral synthesis is performed to derive abundances for 14 chemical species. A hierarchical classification, taking measurement errors into account, is applied to the abundance space and splits the sample into two different groups, identified as the chemically peculiar stars and the normal stars. We show that about one third of the sample is actually composed of spectroscopic binaries (12 double-lined and five single-lined spectroscopic binaries). The hierarchical classification breaks down the remaining sample into 13 chemically peculiar stars (or uncertain) and 17 normal stars.

Abstract Copyright:

Journal keyword(s): stars: early-type - stars: rotation - stars: abundances - stars: chemically peculiar - binaries: spectroscopic

Simbad objects: 60

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Number of rows : 60

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 * sig And ** 00 18 19.6574549 +36 47 06.810654 4.64 4.57 4.52 4.44 4.44 A2V 138 0
2 HD 1439 PM* 00 18 38.2577501436 +31 31 02.029366028   5.851 5.875     A0IV 59 0
3 HD 1561 * 00 20 05.1662238780 +48 51 55.610695961 6.600 6.560 6.530     A0Vs 36 0
4 * 28 Cet * 01 06 05.1487667393 -09 50 21.678020636   5.566 5.565     A0V 49 0
5 * eps Tri V* 02 02 57.9579149437 +33 17 02.906807436   5.549 5.516   5.43 A2V 57 0
6 HD 20149 * 03 15 20.4395629507 +30 33 24.087692459 5.610 5.620 5.610     A1Vs 39 0
7 * 65 Ari * 03 24 26.1152969442 +20 48 12.562631613   6.033 6.061     A1V 35 0
8 HD 23387 ** 03 45 37.7918604034 +24 20 08.366306169   7.33 7.19   6.96 A1V 119 0
9 HD 23489 ** 03 46 27.2786964917 +24 15 17.994858056 7.56 7.44 7.34 7.28 7.23 A2V 99 0
10 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 3077 0
11 HD 23632 * 03 47 20.9687127623 +23 48 12.039404853   7.04 7.02   7.01 A1V 108 0
12 * 24 Tau * 03 47 21.0381093918 +24 06 58.563413901 6.26 6.30 6.28   6.30 A0V 76 0
13 HD 23763 * 03 48 30.0959779922 +24 20 43.793551669   7.08 6.96   6.79 A2V 115 0
14 HD 23948 * 03 49 56.5950944264 +24 20 56.374300553   7.61 7.54   7.48 A0 78 0
15 HD 25175 * 04 00 36.8877857685 +17 17 47.971091271   6.352 6.305     A0V 46 0
16 HD 28780 * 04 36 24.1980831906 +64 15 41.764976323 5.850 5.880 5.910     A1V 43 0
17 HD 30085 * 04 50 36.3896931140 +70 56 29.493855207   6.268 6.341     A0IV 38 0
18 HD 33654 * 05 14 44.2726775919 +53 12 50.211652923 6.280 6.240 6.160     A0V 46 0
19 HD 39985 * 05 56 28.0340970088 +09 30 33.819020709   5.917 5.964     B9Ib 41 0
20 * 60 Ori * 05 58 49.5727551957 +00 33 10.777139128   5.217 5.200     A0V 63 0
21 * 14 Mon V* 06 34 46.3257310146 +07 34 20.950647961   6.44 6.46     A0Vs 38 0
22 HD 47863 * 06 41 21.9413677881 +16 23 51.550037191   6.247 6.272     A1V 29 0
23 HD 50931 * 06 55 34.6182432744 +08 19 27.432657057   6.305 6.258     A0V 35 0
24 * 21 Lyn PM* 07 26 42.8518693 +49 12 41.490677   4.594 4.610     A0.5Vs 105 0
25 HD 65900 * 08 01 13.8975597664 +04 52 47.525744147   5.647 5.640     A1V 70 0
26 HD 67959 * 08 10 58.8845078544 +14 37 46.109259242   6.217 6.207     A1V 40 0
27 HD 72660 * 08 34 01.6143548549 -02 09 05.594896178   5.797 5.792     A0V 118 0
28 * 37 Cnc * 08 38 05.1712101921 +09 34 28.604888284   6.515 6.531     A1V 33 0
29 * 34 Hya Pe* 09 37 51.5062893698 -09 25 28.014258885   6.360 6.390     A0Vp 37 0
30 * 7 Sex PM* 09 52 12.1642737011 +02 27 14.864758128 5.90 5.98   6.0   A0III/IV 113 0
31 * 42 Leo V* 10 21 50.3030280930 +14 58 32.788503259   6.160 6.163     A1V 44 0
32 NAME UMa Region reg 11 00 +50.0           ~ 318 0
33 * bet UMa PM* 11 01 50.4765370 +56 22 56.733912 2.35 2.35 2.37 2.31 2.35 A1IVps 414 1
34 HD 101369 * 11 39 51.1212888230 -14 28 06.683072524   6.194 6.198     A0V 28 1
35 * b Vir * 11 59 56.9127613024 +03 39 18.744123054   5.346 5.345   5.34 A0V 62 0
36 HD 107655 PM* 12 22 10.8267015181 +24 46 25.921679065   6.170 6.162     A0V 87 0
37 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 402 1
38 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 392 2
39 HD 119537 PM* 13 43 54.2377740409 -05 29 56.179758902   6.559 6.498     A0V 44 0
40 HD 127304 * 14 29 49.6704431538 +31 47 28.278888987   6.034 6.050     A0Vs(Si) 80 0
41 HD 132145 * 14 57 03.5937378559 +21 33 19.522666792   6.521 6.504     A1V 49 0
42 * k Boo PM* 15 05 25.8346425267 +48 09 03.494251617   5.568 5.577     A0Vs 76 0
43 * q Her * 16 11 28.7384316179 +16 39 56.488599057   6.099 6.082     A0V 63 0
44 HD 145788 * 16 12 56.5878433645 -04 13 14.824104492   6.367 6.255     A0V 50 0
45 * 33 Oph V* 17 03 39.3020000100 +13 36 19.254049852   5.913 5.908     A1V 59 0
46 HD 156653 * 17 18 04.9359018965 +17 19 04.333748699   6.002 5.992     A1V 39 0
47 HD 158716 * 17 30 22.6535196525 +11 55 26.455042432 6.560 6.530 6.480     A1V 38 0
48 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2544 0
49 HD 174567 * 18 49 44.0882974689 +31 37 46.070981693   6.615 6.632     A0Vs 54 0
50 * g Aql ** 19 02 54.5010526943 -03 41 56.288077922   5.39 5.40     B9IV 50 0
51 * iot01 Cyg * 19 27 25.9602225121 +52 19 13.587124957   5.75 5.75     A1V 32 0
52 * 29 Vul PM* 20 38 31.3290367573 +21 12 04.376310503 4.73 4.80 4.82 4.79 4.83 A0Va(_sh) 120 0
53 * 76 Dra V* 20 42 35.2352281280 +82 31 52.146481320 5.720 5.740 5.750     A0V 46 0
54 HD 198552 PM* 20 50 37.0642429137 +18 03 04.706402156 6.690 6.650 6.620     A1Vs 32 0
55 V* V1942 Cyg a2* 22 02 56.66068 +44 38 59.5009   5.565 5.596     A0IV 97 1
56 HD 217186 PM* 22 58 42.6247554010 +07 20 24.289855998   6.385 6.340     A1V 37 0
57 HD 219290 * 23 14 14.3815966698 +50 37 04.419701198 6.250 6.300 6.310     A0V 36 0
58 HD 219485 * 23 14 37.1041129704 +74 13 52.574678092 5.850 5.870 5.890     A0V 45 0
59 HD 223386 PM* 23 48 53.9576553953 +59 58 44.171694257   6.311 6.324     A0V 53 0
60 * 25 Psc * 23 53 04.7623517897 +02 05 26.223098897   6.275 6.280     B9.5V 39 0

    Equat.    Gal    SGal    Ecl

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2021.05.12-09:04:50

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