J/A+A/417/945 BVI & JHK photometry of NGC 3960 (Prisinzano+, 2004) ================================================================================ Parameter properties and stellar population of the old open cluster NGC 3960. Prisinzano L., Micela G., Sciortino S., Favata F. =2004A&A...417..945P (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, UBVRI ; Photometry, infrared Keywords: Galaxy: open clusters and associations: individual: NGC 3960 - techniques: photometric - astrometry - stars: luminosity function, mass function Abstract: We present a BVI photometric and astrometric catalogue of the open cluster NGC 3960, down to limiting magnitude V~22, obtained from observations taken with the Wide Field Imager camera at the MPG/ESO 2.2m Telescope at La Silla. The photometry of all the stars detected in our field of view has been used to estimate a map of the strong differential reddening affecting this area. Our results indicate that, within the region where the cluster dominates, the E(V-I) values range from 0.21 up to 0.78, with E(V-I)=0.36 (E(B-V)=0.29) at the nominal cluster centroid position; color excesses E(V-I) up to 1 mag have been measured in the external regions of the field of view where field stars dominate. The reddening-corrected color-magnitude diagram (CMD) allows us to conclude that the cluster has an age between 0.9 and 1.4Gyr and a distance modulus of (V-M_V)_0=11.35. Based on observations made with the European Southern Observatory telescopes obtained from the the ESO/ST-ECF Science Archive Facility. Description: Optical and infrared (2MASS, ) photometric catalog of candidate members of the open cluster NGC 3960. File table5.dat contains RA and DE (J2000.0) coordinates in decimal degrees, an identification number for each star, the V, B, I magnitudes and the associated uncertainties. File table6.dat contains RA and DE (J2000.0) coordinates in decimal degrees, an identification number for each star, the J, H, Ks magnitudes and the associated uncertainties taken from the All-Sky Point Source Catalogue of the Two Micron All Sky Survey (2MASS, ). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table5.dat 90 2118 Astrometric optical photometric catalog of candidate members of the open cluster NGC 3960 table6.dat 90 749 Astrometric infrared photometric catalog of candidate members of the open cluster NGC 3960 -------------------------------------------------------------------------------- See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) J/A+A/385/867 : CCD {Delta}a-photometry of 5 open clusters (Paunzen+, 2002) Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 12 F12.8 deg RAdeg Right ascension (J2000) 17- 28 F12.8 deg DEdeg Declination (J2000) 31- 36 I6 -- Seq Identification number 40- 45 F6.3 mag Vmag V magnitude 50- 54 F5.3 mag e_Vmag Error on V magnitude 58- 63 F6.3 mag Bmag B magnitude 68- 72 F5.3 mag e_Bmag Error on B magnitude 76- 81 F6.3 mag Imag I magnitude 86- 90 F5.3 mag e_Imag Error on I magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table6.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 12 F12.8 deg RAdeg Right ascension (J2000) 17- 28 F12.8 deg DEdeg Declination (J2000) 32- 36 I5 -- Seq Identification number 40- 45 F6.3 mag Jmag 2MASS J magnitude 50- 54 F5.3 mag e_Jmag Error on J magnitude 58- 63 F6.3 mag Hmag 2MASS H magnitude 68- 72 F5.3 mag e_Hmag Error on H magnitude 76- 81 F6.3 mag Ksmag 2MASS Ks magnitude 86- 90 F5.3 mag e_Ksmag Error on Ks magnitude -------------------------------------------------------------------------------- Acknowledgements: Infrared photometry is based on data from 2MASS, a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation Lorendana Prisinzano ================================================================================ (End) L. Prisinzano [INAF - OAPA, Italy], Patricia Bauer [CDS] 06-Apr-2004