2001A&A...366..490S


Query : 2001A&A...366..490S

2001A&A...366..490S - Astronomy and Astrophysics, volume 366, 490-497 (2001/2-1)

Blue stragglers in open clusters. III. NGC 7789.

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

Abstract (from CDS):

We performed for the first time a detailed LTE spectroscopic study of a sample of blue straggler stars in the moderately old open cluster NGC 7789. For eight stars the parameters and abundances of several elements were determined. The cluster members show a remarkable surface magnesium deficiency which is quite unusual for late B - early A stars. Iron and titanium abundances are in agreement with other photometric and spectroscopic estimates of the NGC 7789 metallicity. All the confirmed blue stragglers have rather low projected rotational velocities (with one exception for K88, vsini=80km/s).

Abstract Copyright:

Journal keyword(s): stars: open clusters and associations: individual: NGC 7789 - stars: blue stragglers - stars: abundances

CDS comments: Table 1 : cross-id. GET (in SIMBAD, Cl* NGC 7789 G ) not coherent with 1998PASP.110.1172G

Simbad objects: 10

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Number of rows : 10
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 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2549 0
2 NGC 7789 88 * 23 56 20.1936492533 +56 48 04.659249137   13.48 13.0376   12.517 ~ 9 0
3 NGC 7789 316 * 23 56 54.2385326230 +56 40 46.790189841   14.15 13.7518   13.270 ~ 10 0
4 NGC 7789 371 * 23 56 59.0233172862 +56 47 33.114863604   13.27 12.9070   12.419 A3V 16 0
5 NGC 7789 409 * 23 57 02.5905897338 +56 47 02.157680382   13.29 12.9210   12.520 A1 14 0
6 NGC 7789 OpC 23 57 24 +56 42.5   7.68 6.7     ~ 466 0
7 NGC 7789 677 * 23 57 25.1838667088 +56 38 00.644494217   11.24 11.0805   10.785 ~ 14 0
8 NGC 7789 746 * 23 57 30.3611917067 +56 44 30.348828930   13.13 12.8105   12.344 ~ 13 0
9 NGC 7789 1211 * 23 58 25.5561628753 +56 42 24.771242449   11.5 11.4814   11.160 B8 17 0
10 NGC 7789 1270 * 23 58 37.8309749117 +56 45 45.032287014   13.92 13.46     ~ 8 0

    Equat.    Gal    SGal    Ecl

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2021.07.24-13:40:56

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