2012MNRAS.422.1171S


Query : 2012MNRAS.422.1171S

2012MNRAS.422.1171S - Mon. Not. R. Astron. Soc., 422, 1171-1177 (2012/May-2)

The blue straggler star population in NGC 6229.

SANNA N., DALESSANDRO E., LANZONI B., FERRARO F.R., BECCARI G. and ROOD R.T.

Abstract (from CDS):

We have used a combination of high-resolution Hubble Space Telescope Wide Field Planetary Camera 2 and wide-field ground-based observations in ultraviolet and optical bands to study the blue straggler star (BSS) population of the outer halo globular cluster NGC 6229 over its entire radial extent. A total of 64 bright BSS (with m255≤ 21.30, corresponding to m555≤ 20.75) has been identified. The BSS-projected radial distribution is found to be bimodal, with a high central peak, a well-defined minimum at intermediate radii (r ∼ 40 arcsec) and an upturn in the outskirts. From detailed star counts even in the very inner region, we compute the centre of gravity of the cluster and the most accurate and extended radial density profile ever published for this system. The profile is reasonably well reproduced by a standard King model with an extended core (rc ≃ 9.5 arcsec) and a modest value of the concentration parameter (c ≃ 1.49). However, a deviation from the model is noted in the most external region of the cluster (at r > 250 arcsec from the centre). This feature needs to be further investigated in order to assess the possible presence of a tidal tail in this cluster.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): binaries: general - blue stragglers - stars: evolution - globular clusters: individual: NGC 6229

Simbad objects: 19

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Number of rows : 19
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 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3653 0
2 NAME Magellanic Stream HVC 00 32 -30.0           ~ 853 1
3 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 742 0
4 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 853 0
5 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1296 0
6 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 750 0
7 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3120 0
8 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2326 0
9 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1829 0
10 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 336 0
11 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 327 0
12 NGC 6388 GlC 17 36 17.461 -44 44 08.34   7.40       ~ 836 1
13 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12308 0
14 NGC 6441 GlC 17 50 13.06 -37 03 05.2   9.26 8.00     ~ 797 0
15 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1856 0
16 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 787 0
17 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 326 0
18 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 936 1
19 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 952 0

    Equat.    Gal    SGal    Ecl

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2021.07.28-19:14:36

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