2009A&A...501..949M


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.09CET09:00:20

2009A&A...501..949M - Astronomy and Astrophysics, volume 501, 949-964 (2009/7-3)

Imaging of star clusters in unperturbed spiral galaxies with the advanced camera for surveys. II. A comparison of star cluster systems in five late type spirals.

MORA M.D., LARSEN S.S., KISSLER-PATIG M., BRODIE J.P. and RICHTLER T.

Abstract (from CDS):

Our goal is to investigate the formation of star clusters in relatively unperturbed environments. To do this, we studied the five nearby spiral galaxies: NGC 45, NGC 1313, NGC 4395, NGC 5236, and NGC 7793. We obtained images of the galaxies and their star cluster systems in UBVI using the Advanced Camera for Surveys (ACS) and the Wide Field Planetary Camera 2 (WFPC2) on board the Hubble Space Telescope. From a comparison of the broad-band colours with simple stellar population (SSP) models, we derived individual properties for each galaxy for the clusters such as masses, ages, and sizes, as well as global star cluster system properties such as the age distribution, luminosity function, and disruption time for clusters. We identified about 600 star cluster candidates in the five galaxies, typically spanning ages from 3.9Myr up to 1Gyr and masses from 102M up to 105M. We used the cluster age distribution to reconstruct the recent star formation history of each galaxy and observed significant variations from galaxy to galaxy. We went on to derive the luminosity function of the young star clusters and found slopes around α~-2 (similar to the ones found in previous studies) and the brightest star cluster magnitudes consistent with a random sampling of the luminosity function without involving an upper luminosity cut off. Finally, the sample includes only a handful of old globular clusters in each galaxy from which we derive low globular cluster specific frequencies.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters - galaxies: photometry

VizieR on-line data: <Available at CDS (J/A+A/501/949): table.dat>

Nomenclature: Table 11: [MLK2009] NGCNNNN-F-NNN N=580.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

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 NGC 45 LSB 00 14 03.989 -23 10 55.53 11.92 11.21 10.73 10.58 10.4 ~ 231 1
2 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3620 0
3 NGC 1313 G 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 620 2
4 NGC 4038 GiP 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1285 1
5 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1573 0
6 NGC 4039 GiP 12 01 53.8 -18 53 06   11.08   9.77   ~ 1136 1
7 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 1026 1
8 M 83 SBG 13 37 00.919 -29 51 56.74 8.85 8.11 7.52 7.21   ~ 2280 2
9 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2538 0
10 NGC 7793 GiG 23 57 49.7533807411 -32 35 27.708304655 10.26 9.74 9.28 9.06 9.7 ~ 957 2

    Equat.    Gal    SGal    Ecl

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2021.03.09-09:00:20

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