J/A+A/442/85 Globular cluster candidates in Low SB Galaxies (Sharina+, 2005)
Hubble Space Telescope imaging of globular cluster candidates in
low surface brightness dwarf galaxies.
Sharina M.E., Puzia T.H., Makarov D.I.
<Astron. Astrophys., 442, 85-95 (2005)>
=2005A&A...442...85S 2005A&A...442...85S
ADC_Keywords: Galaxies, nearby ; Clusters, globular ; Photometry
Keywords: galaxies: dwarf - galaxies: star clusters
Abstract:
Fifty-seven nearby low surface brightness dwarf galaxies
(-10≳MV≳-16) were searched for globular cluster candidates (GCCs)
using Hubble Space Telescope WFPC2 imaging in V and I. The sample
consists of 18 dwarf spheroidal (dSph), 36 irregular (dIrr), and 3
"transition" type (dIrr/dSph) galaxies with angular sizes less than
3.7kpc situated at distances 2-6Mpc in the field and in the nearby
groups: M 81, Centaurus A, Sculptor, Canes Venatici I cloud.
Description:
The galaxies were surveyed with the HST Wide Field and Planetary
Camera 2 (WFPC2; snapshot programs GO-8192, GO-8601) with 600-second
exposures taken in the F606W and F814W filters for each object.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 89 57 Low surface brightness galaxies in nearby groups
and in the field, which were searched for
globular cluster candidates
table2.dat 89 105 List of globular cluster candidates (GCCs)
in nearby LSB dwarf galaxies
table3.dat 70 105 The King law approximation parameters for
globular cluster candidates in nearby LSB
dwarf galaxies
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See also:
J/AJ/127/704 : Low surface brightness galaxies in SDSS (Kniazev+, 2004)
J/ApJS/105/209 : Low surface brightness galaxies. I. The catalog (Impey+ 1996)
J/MNRAS/304/297 : LSBG catalogue (Morshidi-Esslinger+, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Group Group designation
16- 33 A18 --- Name Name(s) of the galaxy
34- 35 I2 h RAh Right ascension (J2000)
37- 38 I2 min RAm Right ascension (J2000)
40- 41 I2 s RAs Right ascension (J2000)
43 A1 --- DE- Declination sign (J2000)
44- 45 I2 deg DEd Declination (J2000)
47- 48 I2 arcmin DEm Declination (J2000)
50- 51 I2 arcsec DEs Declination (J2000)
53- 54 I2 --- TType Morphological T type
56- 59 F4.2 Mpc Dist Distance
61- 66 F6.2 mag VMAG ? Integrated absolute V magnitude
68- 70 A3 --- r_VMAG Reference for VMAG (1)
73- 75 F3.1 solMass/kpc2 logΣHI ? logarithmic surface gas density of
neutral hydrogen
77- 79 F3.1 kpc R Semi-major axis diameter
81- 84 F4.1 mag/arcsec+2 SBmean ? Mean surface brightness in B-band
86- 87 I2 --- NGCC Number of globular cluster candidates
(including Nout)
89 I1 --- Nout ? Number of GCCs located outside the
isophote of constant surface
brightness µB=26.5mag/arcsec2
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Note (1): Refenreces as follows:
0 = this work
K0 = Karachentsev et al., 2000ApJ...542..128K 2000ApJ...542..128K
K1a = Karachentsev et al., 2000A&A...363..117K 2000A&A...363..117K
K1b = Karachentsev et al., 2001A&A...379..407K 2001A&A...379..407K
K1c = Karachentsev et al., 2001A&A...375..359K 2001A&A...375..359K
RC3 = RC3, de Vaucouleurs et al., Cat. VII/155
M98 = Makarova et al., 1998, Cat. J/A+AS/128/459
M99 = Makarova et al., 1999, Cat. J/A+AS/139/491
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- [SPM2005] Globular cluster candidate designation (G1)
17 A1 --- n_[SPM2005] [*] Note for GCC outside the isophote (G2)
19- 25 F7.3 pix Xpos X coordinate derived from the WFPC2 frame
27- 33 F7.3 pix Ypos Y coordinate derived from the WFPC2 frame
35- 36 I2 h RAh Right ascension (J2000)
38- 39 I2 min RAm Right ascension (J2000)
41- 44 F4.1 s RAs Right ascension (J2000)
46 A1 --- DE- Declination sign (J2000)
47- 48 I2 deg DEd Declination (J2000)
50- 51 I2 arcmin DEm Declination (J2000)
53- 54 I2 arcsec DEs Declination (J2000)
56- 59 F4.1 pc rh Half-light radius
61- 63 F3.1 --- ell Ellipticity (apparent axial ratio 1-b/a)
65- 69 F5.2 mag VMAG0 Integrated absolute V magnitude (3)
71- 74 F4.2 mag e_VMAG0 rms uncertainty on VMAG0
76- 79 F4.2 mag (V-I)0 Integrated absolute V-I color (3)
81- 84 F4.2 mag e_(V-I)0 rms uncertainty on (V-I)0
86- 89 F4.2 kpc dproj Projected separation from the center of
its host galaxy
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Note (3): Corrected for Galactic extinction using Schlegel
(1998ApJ...500..525S 1998ApJ...500..525S) maps.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- [SPM2005] Globular cluster candidate
designation (G1)
17 A1 --- n_[SPM2005] [*] Note for GCC outside the isophote (G2)
20- 24 F5.2 mag/arcsec+2 muV0 Reddening corrected V-band central
surface brightness
26- 29 F4.2 mag/arcsec+2 e_muV0 rms uncertainty on muV0
31- 35 F5.2 mag/arcsec+2 muI0 Reddening corrected I-band central
surface brightness
37- 40 F4.2 mag/arcsec+2 e_muI0 rms uncertainty on muI0
42- 46 F5.2 pc rc King core radius
48- 51 F4.2 pc e_rc rms uncertainty on rc
53- 57 F5.1 pc rt King tidal radius
58 A1 --- u_rt Uncertainty flg on rt
60- 63 F4.1 pc e_rt ? rms uncertainty on rt
66- 70 F5.1 --- c King concentration parameter, c=rt/rc
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Global notes:
Note (G1): Identifier of each cluster, composed of the
(name of its host galaxy)-(WFPC2 chip)-(cluster numbering)
Note (G2): * for GCC located outside the isophote of constant surface
brightness µB∼26.5 mag/arcsec2 of the host galaxy.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-Jul-2006