Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/690/512  LMXBs and globulars in early-type galaxies. II.  (Humphrey, 2009)

Low-mass X-ray binaries and globular clusters in early-type galaxies. II. Globular cluster candidates and their mass-metallicity relation. Humphrey P.J. <Astrophys. J., 690, 512-525 (2009)> =2009ApJ...690..512H
ADC_Keywords: Photometry, HST ; Galaxies, optical ; Clusters, globular Keywords: galaxies: distances and redshifts - galaxies: elliptical and lenticular, cD - galaxies: general - galaxies: star clusters Abstract: We present an astrometry and photometry catalogue of globular cluster (GC) candidates detected with the Hubble Space Telescope Wide Field Planetary Camera 2 in a sample of 19 early-type galaxies, appropriate for comparison with the low-mass X-ray binary populations observed with Chandra. In a companion paper (Cat. J/ApJ/689/983), we present the Chandra data and investigate the relation between these populations. We demonstrate that, although there is little evidence of a color-magnitude correlation for the GCs, after estimating mass and metallicity from the photometry under the assumption of a single-age simple stellar population, there is a significant positive correlation between mass and metallicity. Description: The GC populations in 19 early-type galaxies was observed with the Hubble Space Telescope (HST) Wide Field Planetary Camera 2 (WFPC2), between 1994 and 1997, except for NGC 4472 which was observed in 2001 April. Table 1 lists the galaxies and the details of the archival observations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 87 19 Target galaxies list and observation log table5.dat 105 3754 Catalog of globular cluster (GC) candidates
See also: B/hst : HST Archived Exposures Catalog (STScI, 2007) VII/176 : Photometry and Spectroscopy of Elliptical Galaxies (Faber+ 1989) J/ApJ/586/814 : NGC 4472 Chandra/HST study (Maccarone+, 2003) J/A+A/455/453 : Globular Cluster System of NGC5846 (Chies-Santos+, 2006) J/ApJ/671/1624 : NGC 1533 globular cluster candidates (Degraaff+, 2007) J/ApJ/689/983 : LMXBs in early-type galaxies. I. Chandra (Humphrey+, 2008) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Target name (NGC number) 10- 17 A8 --- Type NED morphological type 19- 22 F4.1 Mpc Dist Distance (1) 24- 27 F4.2 10+11Lsun LKs 2MASS Ks-band luminosity (2) 29- 33 A5 --- FiltB HST filter for B-band 35- 40 A6 --- OIDB B-band HST dataset identifier 42- 45 I4 s ExpB ? B-band exposure time 47- 51 A5 --- FiltV HST filter for V-band 53- 58 A6 --- OIDV V-band HST dataset identifier 60- 63 I4 s ExpV ? V-band exposure time 65- 69 A5 --- FiltI HST filter for I-band 71- 76 A6 --- OIDI I-band HST dataset identifier 78- 81 I4 s ExpI ? I-band exposure time 83- 87 F5.2 arcsec Rmin Approximate semi-major axis of the central, excluded region
Note (1): Taken from Tonry et al. (2001ApJ...546..681T), corrected by -0.16mag to account for revisions to the Cepheid zero-point (e.g., Jensen et al. 2003ApJ...583..712J), except that of NGC 5018, which was taken from Faber et al. (1989, Cat. VII/176). Note (2): Total, extrapolated Ks-band luminosities (LKs) were taken from the Two Micron All Sky Survey (2MASS; Jarrett, 2000PASP..112.1008J), adopting MK=3.41. The zero-point was chosen for consistency with the stellar population models of Maraston (2005MNRAS.362..799M; Section 3.2) and assuming the K-band and Ks-band magnitudes do not differ significantly (e.g., Carpenter, 2001AJ....121.2851C).
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Galaxy name (NGC number) 10- 12 I3 --- Seq Globular cluster candidate number (<[H2009] NGC NNNN NNN> in Simbad) 14- 15 I2 h RAh Hour of Right Ascension (J2000) 17- 18 I2 min RAm Minute of Right Ascension (J2000) 20- 24 F5.2 s RAs Second of Right Ascension (J2000) 26 A1 --- DE- Sign of the Declination (J2000) 27- 28 I2 deg DEd Degree of Declination (J2000) 30- 31 I2 arcmin DEm Arcminute of Declination (J2000) 33- 36 F4.1 arcsec DEs Arcsecond of Declination (J2000) 38- 43 F6.3 mag Vmag HST V band magnitude (F555W, F606W or F547W) 45- 49 F5.3 mag e_Vmag Uncertainty in Vmag 51- 56 F6.3 mag Imag ? HST I band magnitude (F814W or F791W) 58- 62 F5.3 mag e_Imag ? Uncertainty in Imag 64- 70 F7.4 MMsun Mass ? Mass 72- 76 F5.3 MMsun E_Mass ? Upper uncertainty value on Mass 78- 82 F5.3 MMsun e_Mass ? Lower uncertainty value on Mass (1) 85- 92 F8.5 [Sun] [Z/H] ? Metallicity 95- 99 F5.3 [Sun] E_[Z/H] ? Upper uncertainty value on [Z/H] 101-105 F5.3 [Sun] e_[Z/H] ? Lower uncertainty value on [Z/H] (1)
Note (1): Or just the uncertainty on Mass or [Z/H] if the previous column is blank.
History: From electronic version of the journal References: Humphrey et al. Paper I. 2008ApJ...689..983H Cat. J/ApJ/689/983
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 24-Jan-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact