Access to Astronomical Catalogues

← Click to display the menu
J/AJ/134/2168       BVI photometry of M33 star clusters          (Park+, 2007)

A catalog of new M33 star clusters based on Hubble space telescope WFPC2 images. Park W.-K., Lee M.G. <Astron. J., 134, 2168-2178 (2007)> =2007AJ....134.2168P
ADC_Keywords: Galaxies, nearby ; Associations, stellar ; Photometry, UBVRI Keywords: galaxies: clusters: general - galaxies: individual (M33) - galaxies: photometry - galaxies: star clusters Abstract: We present the results of a survey for star clusters in M33 using HST WFPC2 archive images. We have found 104 star clusters, including 32 new ones, in the images of 24 fields that were not included in previous studies. Combining these with previous data in the literature, we increase the number of M33 star clusters found in the HST images to 242. We have derived BVI integrated photometry of these star clusters from the CCD images taken with the CFH12k mosaic camera at the CFHT. Description: We used WFPC2 images of M33 in the HST archive that were not used in the previous studies by Chandar et al. (1999, Cat. J/ApJS/122/431, 2001, Cat. J/A+A/366/498). The images were obtained using various filter combinations of F300W, F336W (U), F436W (B), F555W, F606W (V), and F814W (I). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 114 32 Catalog of new M33 star clusters discovered in this study table3.dat 114 72 Catalog of previously known M33 star clusters confirmed in this study table4.dat 114 138 Catalog of previously known M33 star clusters
See also: J/AcA/48/455 : Globular Clusters in M31 and M33 (Mochejska+, 1998) J/ApJS/122/431 : Star Clusters in M33 (Chandar+, 1999) J/A+A/366/498 : VI photometry of M33 star clusters (Chandar+, 2001) J/A+A/444/831 : New star clusters in M33 (Bedin+, 2005) J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006) J/AJ/134/447 : Catalog of star cluster candidates in M 33 (Sarajedini+, 2007) Byte-by-byte Description of file: table2.dat table3.dat table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [PL2007] Source number 4 A1 --- f_[PL2007] [*#] Flag about photometry (1) 6 I1 h RAh Hour of Right Ascension (J2000) 8- 9 I2 min RAm Minute of Right Ascension (J2000) 11- 15 F5.2 s RAs Second of Right Ascension (J2000) 17 A1 --- DE- Sign of Declination (J2000) 18- 19 I2 deg DEd Degree of Declination (J2000) 21- 22 I2 arcmin DEm Arcminute of Declination (J2000) 24- 28 F5.2 arcsec DEs Arcsecond of Declination (J2000) 30- 35 F6.3 mag Vmag ? The V band magnitude 36 A1 --- f_Vmag Near-edge of off V magnitude (2) 38- 42 F5.3 mag e_Vmag ? Error in Vmag 44- 49 F6.3 mag B-V ? The (B-V) color index 50 A1 --- f_B-V Near-edge of off (B-V) color (2) 52- 56 F5.3 mag e_B-V ? Error in B-V 58- 63 F6.3 mag V-I ? The (V-I) color index 65- 69 F5.3 mag e_V-I ? Error in V-I 71- 74 F4.2 mag E(B-V) The reddening (3) 76- 79 F4.2 mag e_E(B-V) ? Error in E(B-V) 81-114 A34 --- ONames Cross-identification with previous catalogs (4)
Note (1): Flags as follows: * = Magnitude and colors of the star cluster is measured on HST/WFPC2 image with r=2.2" and 1.0" apertures for V and color measurement, respectively instead of CFH12k mosaic CCD image with r=4.0" and r=2.0" apertures for V and color measurement, respectively. # = No photometry could be made from CFH12k mosaic CCD images nor HST/WFPC2 images Note (2): Flags as follows: : = the cluster is located near the edge of the CCD chip, leading to measurement was made with smaller apertures f = Happened to be off from CFHT CFH12k images Note (3): Measured with UBVRI PSF photometry data by Massey et al. (2006, Cat. J/AJ/131/2478). The uncertainties of the values are 0.05. Note (4): Identifications are abbreviated as: * B from Bedin et al. (2005, Cat. J/A+A/444/831), * CBF from Chandar et al. (1999, Cat. J/ApJS/122/431 and 2001, Cat. J/A+A/366/498) * CS from Christian & Schommer (1982ApJS...49..405C) * MKKSS from Mochejska et al. (1998, Cat. J/AcA/48/455) * MD from Melnick & D'Odorico (1978A&AS...34..249M) based on the coordinates given by Ma et al. (2002ChJAA...2..197M), * SBGHS from Sarajedini et al. (2007, Cat. J/AJ/134/447)
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 07-Feb-2010
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