J/AJ/133/1287 JHK photometry of 24 Galactic globular clusters (Valenti+, 2007)
Near-infrared properties of 24 globular clusters in the Galactic Bulge. Valenti E., Ferraro F.R., Origlia L. <Astron. J., 133, 1287-1301 (2007)> =2007AJ....133.1287V
ADC_Keywords: Clusters, globular ; Photometry, infrared Keywords: Galaxy: bulge - globular clusters: general - infrared: stars - techniques: photometric Abstract: We present near-IR color-magnitude diagrams and physical parameters for a sample of 24 Galactic globular clusters toward the bulge. In this paper we discuss the properties of 12 new clusters (out of the 24) in addition to those previously studied and published by our group. The compilation includes measurements of the cluster reddening, distance, photometric metallicity, horizontal branch red clump, and red giant branch morphological (e.g., mean ridgelines) and evolutionary (e.g., bump and tip) features. The compilation is available in electronic form on the World Wide Web, and it will be updated regularly. Description: The cluster sample presented in this study contains 24 GCs in the bulge direction observed in the near-IR by our group in the last few years. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 144 24 The Bulge Globular Cluster parameters phot/* 66 24 Individual JHK photometry
See also: VII/103 : Galactic Globular Clusters (Monella 1985) VII/151 : Galactic Globular Clusters Structure Parameters (Webbink 1985) J/A+A/391/945 : HST photometry of 74 galactic globular clusters (Piotto+, 2002) J/A+A/432/851 : Distance of 72 Galactic globular clusters (Recio-Blanco+, 2005) J/A+A/450/105 : Properties of 153 Galactic globular clusters (Bica+, 2006) J/ApJ/590/797 : Parameters of galactic globular clusters (Van Den Bregh+, 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Name Cluster name 9- 14 F6.2 deg GLON [-15/21] Galactic longitude 16- 21 F6.2 deg GLAT Galactic latitude 23- 26 F4.1 kpc dsun Heliocentric distance 28- 30 F3.1 kpc RGC Galactocentric radius 32- 35 F4.1 kpc X Distance along X axis (galactic) 37- 40 F4.1 kpc Y Distance along Y axis (galactic) 42- 46 F5.2 kpc Z Distance along Z axis (galactic) 47- 51 F5.2 mag E(B-V) Redenning 53- 57 F5.2 mag (m-M)0 Distance modulus 59- 63 F5.2 [-] [Fe/H] Metallicity (2) (1) 65- 69 F5.2 [-] [M/H] Metal abundance (2) 71- 75 F5.2 mag JRC ?=- HB red clump J magnitude 77- 81 F5.2 mag HRC ?=- HB red clump H magnitude 83- 87 F5.2 mag KRC ?=- HB red clump K magnitude 89- 93 F5.2 mag JBump ?=- RGB Bump J magnitude 95- 99 F5.2 mag HBump ?=- RGB Bump H magnitude 101-105 F5.2 mag KBump ?=- RGB Bump K magnitude 107-111 F5.2 mag JTip Tip J magnitude 113-116 F4.2 mag HTip ?=- Tip H magnitude 118-121 F4.2 mag KTip ?=- Tip K magnitude 123-126 F4.2 10-7W MBolBump ?=- RGB Bump bolometric luminosity (3) 128-132 F5.2 10-7W MBolTip ?=- Tip bolometric luminosity (3) 134-144 A11 --- FileName Name of the file with individual photometry in subdirectory phot
Note (1): [Fe/H] is in the Carretta & Gratton (1997, Cat. J/A+AS/121/95) scale Note (2): For NGC6256, NGC6273, NGC6293, NGC6553 and NGC6401 the metallicity estimates ([Fe/H] and [M/H]) have been derived by using the empirical method of Ferraro, Valenti & Origlia (2006ApJ...649..243F; see also IR relations). Note (3): The Bolometric magnitudes of the RGB Bump and Tip have been derived by using the bolometric corrections for Population II giants computed by Montegriffo et al. (1998MNRAS.297..872M), and by adopting the reddening and distance values listed in Table 1 and the extinction coefficients of Savage & Mathis (1979ARA&A..17...73S).
Byte-by-byte Description of file: phot/*
Bytes Format Units Label Explanations
4- 8 I5 --- Seq Sequential number within the cluster (1) 12- 17 F6.3 mag Jmag ?=0.000 J magnitude 21- 26 F6.3 mag Hmag ? (?=0.000) H magnitude 30- 35 F6.3 mag Kmag ? (?=0.000) K magnitude 40- 51 F12.8 deg RAdeg Right ascension in decimal degrees (J2000) 55- 66 F12.8 deg DEdeg Declination in decimal degrees (J2000)
Note (1): Stars are identified as CL* NGC NNNN VFO NNNNN for NGC clusters, Cl* TERZAN N VFO NNNNN for Terzan clusters.
History: Copied at http://www.bo.astro.it/~GC/ir_archive/
(End) Patricia Vannier [CDS] 04-Feb-2009
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