2010ApJ...725..200F


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.09CET22:56:50

2010ApJ...725..200F - Astrophys. J., 725, 200-213 (2010/December-2)

An updated catalog of M31 globular-like clusters: UBVRI photometry, ages, and masses.

FAN Z., DE GRIJS R. and ZHOU X.

Abstract (from CDS):

We present an updated UBVRI photometric catalog containing 970 objects in the field of M31, selected from the Revised Bologna Catalog (RBC v.4.0), including 965, 967, 965, 953, and 827 sources in the individual UBVRI bands, respectively, of which 205, 123, 14, 126, and 109 objects do not have previously published photometry. Photometry is performed using archival images from the Local Group Galaxies Survey, which covers 2.2 deg2 along the major axis of M31. Detailed comparisons show that our photometry is fully consistent with previous measurements in all filters. We focus on 445 confirmed "globular-like" clusters and candidates, comprising typical globular and young massive clusters. The ages and masses of these objects are derived by comparing their observed spectral-energy distributions with simple stellar population synthesis. Approximately half of the clusters are younger than 2 Gyr, suggesting that there has been significant recent active star formation in M31, which is consistent with previous results. We note that clusters in the halo (rprojected> 30 kpc) are composed of two different components: older clusters with ages >10 Gyr and younger clusters with ages around 1 Gyr. The spatial distributions show that the young clusters (<2 Gyr) are spatially coincident with the galaxy's disk, including the "10 kpc ring," the "outer ring," and the halo of M31, while the old clusters (>2 Gyr) are spatially correlated with the bulge and halo. We also estimate the masses of the 445 confirmed clusters and candidates in M31 and find that our estimates agree well with previously published values. We find that none of the young disk clusters can survive the inevitable encounters with giant molecular clouds in the galaxy's disk and that they will eventually be disrupted on timescales of a few Gyr. Specifically, young disk clusters with a mass of 104 M are expected to dissolve within 3.0 Gyr and will, thus, not evolve to become globular clusters.

Abstract Copyright:

Journal keyword(s): catalogs - galaxies: individual: M31 - galaxies: star clusters: general - globular clusters: general

VizieR on-line data: <Available at CDS (J/ApJ/725/200): table1.dat table5.dat>

Status in Simbad:  being processed

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME [G2012b] C3 ? 00 38 54.19 +40 26 33.9           ~ 2 0
2 M 110 GiG 00 40 22.0544552438 +41 41 07.496294862   8.92 8.07     ~ 1184 1
3 M31GC J004227+411811 Gl? 00 42 26.68 +41 18 10.7           ~ 6 1
4 M31GC J004235+405544 Gl? 00 42 34.50 +40 55 44.0           ~ 8 0
5 M31GC J004236+411314 OpC 00 42 36.13 +41 13 13.2           ~ 9 0
6 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1973 2
7 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10608 1
8 Bol 523 GlC 00 42 46.28 +41 18 32.4 19.58 19.200 18.82 17.850 17.74 ~ 18 0
9 Bol 353 GlC 00 42 47.21 +41 15 38.9           ~ 10 0
10 NAME PB-in2 GlC 00 42 50.72 +41 10 33.5   19.177 18.10   16.886 ~ 24 0
11 Bol D86 Gl? 00 42 56.80 +40 51 21.8     19.21     ~ 8 0
12 Bol D88 GlC 00 42 59.38 +41 04 17.4     18.63     ~ 9 0
13 [FMZ2005] 39 GlC 00 43 01.44 +41 30 17.3     15.44     ~ 35 0
14 Bol 379 GlC 00 45 58.8309005030 +40 42 31.400600234 17.460 17.032 16.183 15.560 14.936 ~ 74 0
15 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9134 1
16 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5034 1
17 NGC 1140 EmG 02 54 33.5258827369 -10 01 43.135585379 12.41 12.84 12.49 13.6 13.5 ~ 254 1
18 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1139 3
19 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5236 6
20 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 3904 3
21 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3696 4
22 NAME Local Group GrG ~ ~           ~ 6698 0

    Equat.    Gal    SGal    Ecl

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2019.12.09-22:56:50

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