2010A&A...522A..71J


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.01CET22:05:35

2010A&A...522A..71J - Astronomy and Astrophysics, volume 522, A71-71 (2010/11-1)

Search for extratidal features around 17 globular clusters in the Sloan Digital Sky Survey.

JORDI K. and GREBEL E.K.

Abstract (from CDS):

The dynamical evolution of a single globular cluster and also of the entire Galactic globular cluster system has been studied theoretically in detail. In particular, simulations show how the ``lost'' stars are distributed in tidal tails emerging from the clusters. We investigate the distribution of Galactic globular cluster stars on the sky to identify such features as tidal tails. The Sloan Digital Sky Survey provides consistent photometry of a large part of the sky to study the projected two-dimensional structure of the 17 globular clusters in its survey area. We used a color-magnitude weighted counting algorithm to map (potential) cluster member stars on the sky. We recover the already known tidal tails of Pal 5 and NGC 5466. For NGC 4147 we find a two-arm morphology. Possible indications of tidal tails are also seen around NGC 5053 and NGC 7078, confirming earlier suggestions. Moreover, we find potential tails around NGC 5904 and Pal 14. Especially for Palomar clusters other than Pal 5, deeper data are needed to confirm or to rule out the existence of tails. For many of the remaining clusters in our sample we observe a pronounced extratidal halo, which is particularly large for NGC 7006 and Pal 1. In some cases, the extratidal halos may be associated with the stream of the Sagittarius dwarf spheroidal galaxy (e.g., NGC 4147, NGC 5024, NGC 5053).

Abstract Copyright:

Journal keyword(s): globular clusters: general - Galaxy: structure

Simbad objects: 28

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Number of rows : 28

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     ~ 3617 0
2 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 942 0
3 NAME Sgr Stream St* 02 22 +00.0           ~ 682 0
4 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 206 1
5 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 831 0
6 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 296 1
7 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 265 0
8 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 322 1
9 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 504 0
10 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1050 0
11 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 732 0
12 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 551 0
13 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2298 0
14 NGC 5466 GlC 14 05 27.29 +28 32 04.0   10.5 9.70     ~ 741 0
15 NAME Serpens Dwarf GlC 15 16 05.30 -00 06 41.0   15.1       ~ 641 1
16 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1805 0
17 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 333 0
18 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2036 0
19 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1932 0
20 GAL 000.0+00.0 gam 17 45 39.60213 -29 00 22.0000           ~ 11999 0
21 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1810 2
22 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 776 0
23 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 490 0
24 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 2942 0
25 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 920 1
26 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 940 0
27 NAME Monoceros Stream St* ~ ~           ~ 323 0
28 NAME Virgo Stellar Stream MGr ~ ~           ~ 102 0

    Equat.    Gal    SGal    Ecl

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