2000A&A...356..517A


Query : 2000A&A...356..517A

2000A&A...356..517A - Astronomy and Astrophysics, volume 356, 517-528 (2000/4-2)

Blue stragglers in open clusters. Part II.

ANDRIEVSKY S.M., SCHOENBERNER D. and DRILLING J.S.

Abstract (from CDS):

We present the results of a spectroscopic study of blue straggler and main sequence B and A - type stars in the open clusters NGC 3496, NGC 6475, NGC 6633 and IC 2602. A detailed analysis based on Kurucz's atmosphere models showed that the main sequence stars rotate rather rapidly and differ from a normal (solar) metallicity for only a few light elements. The blue stragglers have significantly smaller projected rotational velocities. As a group, they show the same chemical peculiarities as ordinary cluster and galactic field stars of the same spectral type. Two blue stragglers and one main sequence star possess a rather low helium content. All investigated stars for which the carbon abundance could be measured showed a moderate-to-strong deficiency of this element. The phenomenon of the blue stragglers is briefly discussed on the basis of our study.

Abstract Copyright:

Journal keyword(s): stars: blue stragglers - stars: abundances

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1468 0
2 V* V407 Car a2* 10 38 17.5533646560 -65 02 30.968296872   6.646 6.711     B9Vn 83 0
3 HD 92837 * 10 41 35.1354483384 -64 06 23.009947632   7.148 7.163     A0V 49 0
4 IC 2602 OpC 10 42 27 -64 25.6           ~ 611 0
5 HD 93098 * 10 43 29.4848028216 -64 04 06.512815632   7.64 7.60     A0V 40 0
6 HD 93194 * 10 44 06.9154919 -63 57 39.853461 4.03 4.649 4.789     B3/5Vn 84 0
7 HD 93540 * 10 46 16.5473233704 -64 30 52.422448716 4.79 5.24 5.34     B6Vnn 86 0
8 NGC 3496 OpC 10 59 30 -60 20.1   9.02 8.2     ~ 57 0
9 NGC 3496 43 * 10 59 46 -60 20.5   12.46 12.01     ~ 2 0
10 V* V957 Sco Ro* 17 52 13.6613130072 -34 47 57.109291728 5.16 5.80 5.90     B6Ib 129 0
11 HD 162586 ** 17 53 19.58018 -34 43 50.9011   6.07 6.12     B3/5III 67 0
12 NGC 6475 OpC 17 53 47 -34 50.5           ~ 355 0
13 HD 169959 ** 18 26 52.890288 +06 25 24.01428   8.78 8.62 8.50   A0III 45 0
14 HD 170011 * 18 27 02.0457554760 +06 24 39.973227264   9.20 8.98     A 15 0
15 HD 170054 a2* 18 27 14.6920583736 +06 31 06.964534848   8.19 8.19     ~ 59 0
16 HD 170095 * 18 27 26.3835143664 +06 14 26.949091020   9.73 9.50     A0 19 0
17 NGC 6633 OpC 18 27 31.2 +06 34 12           ~ 349 0
18 HD 170158 * 18 27 47.6901942264 +06 27 21.220496388   9.37 9.13     A2 22 0

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2022.05.28-09:12:19

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