J/AJ/133/2737 NGC 3610 globular clusters HST BVI photometry (Goudfrooij+, 2007)
Dynamical evolution of globular cluster systems formed in galaxy mergers:
deep Hubble Space Telescope advanced camera for surveys imaging of old and
intermediate-age globular clusters in NGC 3610.
Goudfrooij P., Schweizer F., Gilmore D., Whitmore B.C.
<Astron. J., 133, 2737-2751 (2007)>
=2007AJ....133.2737G 2007AJ....133.2737G
ADC_Keywords: Galaxies, photometry ; Clusters, globular ; Photometry, HST
Keywords: galaxies: elliptical and lenticular, cD -
galaxies: individual (NGC 3610) - galaxies: interactions -
galaxies: star clusters
Abstract:
The Advanced Camera for Surveys on board the Hubble Space Telescope
has been used to obtain deep, high-resolution images of the giant
elliptical galaxy NGC 3610, a well-established remnant of a
dissipative galaxy merger. These observations supersede previous,
shallower observations that revealed the presence of a population of
metal-rich globular clusters of intermediate age (∼1.5-4Gyr). We
detect a total of 580 cluster candidates, 46% more than from the
previous WFPC2 images. The new photometry strengthens the significance
of the previously found bimodality of the color distribution of
clusters.
Description:
NGC 3610 was observed with HST on 2003 June 29, using the Wide Field
Channel (WFC) of ACS and the F435W, F555W, and F814W filters, with
total exposure times of 1080, 6410, and 6060s, respectively.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 63 50 Photometry and Astrometry of the 50 Brightest
GC Candidates in NGC 3610 from the ACS Data
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- [GSG2007] Name (GNN)
5- 6 I2 --- [WSK2002] ? Whitmore et al. (2002AJ....124..147W 2002AJ....124..147W) number
8- 13 F6.3 mag Vmag Johnson V magnitude
15- 19 F5.3 mag e_Vmag rms uncertainty on Vmag
21- 25 F5.3 mag V-Ic Johnson-Cousins V-I colour index
27- 31 F5.3 mag e_V-Ic rms uncertainty on V-I
33- 37 F5.3 mag B-Ic Johnson-Cousins B-I colour index
39- 43 F5.3 mag e_B-Ic rms uncertainty on B-I
45- 50 F6.2 arcsec oRA Offset from right ascension (1)
52- 57 F6.2 arcsec oDE Offset from declination (1)
59- 63 F5.2 arcsec Rad Radius (from center)
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Note (1): Offsets from the center of NGC 3610, in J2000.0 equinox:
11:18:25.203 +58:47:11.14 (from a comparison with Whitmore et al.
2002AJ....124..147W 2002AJ....124..147W)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 27-May-2009