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J/A+A/442/917       BVI photometry in Berkeley 73, 75 and 25    (Carraro+, 2005)

A photometric study of the old open clusters Berkeley 73, Berkeley 75 and Berkeley 25. Carraro G., Geisler D., Moitinho A., Baume G., Vazquez R. <Astron. Astrophys. 442, 917 (2005)> =2005A&A...442..917C
ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Photometry, CCD Keywords: open clusters and associations: individual: Berkeley 73, Berkeley 75, Berkeley 25 - open clusters and associations: general - Hertzprung-Russell (HR) and C-M diagrams Abstract: CCD BVI photometry of the faint open clusters Berkeley 73, Berkeley 75 and Berkeley 25 are presented. The two latter are previously unstudied clusters to our knowledge. While Berkeley 73 is found to be of intermediate-age (about 1.5Gyr old), Berkeley 75 and Berkeley 25 are old clusters, with ages greater than 3.0Gyr. We provide also estimates of the clusters size. All these clusters lie far away from the Galactic Center, at RGC≥16kpc, and quite high on the Galactic plane, at |Z|≥1.5kpc. They are therefore important targets to probe the properties of the structure of the Galaxy in this direction, where the Canis Major over-density has been discovered to be located. Description: CCD BVI observations were carried out with the CCD camera on the 1.0m telescope at Cerro Tololo Interamerican era Observatory (CTIO, Chile), on the nights of December 13 and 15, 2004. With a pixel size of 0.469" and a CCD size of 512x512 pixels, this samples a 4.1'x4.1' field on the sky. Objects: ------------------------------------------------------------------- RA (2000) DE GLON GLAT Designation(s) ------------------------------------------------------------------- 06 22 06 -06 19 00 215.28 -09.42 Berkeley 73 = Cl Berkeley 73 06 48 59 -23 59 30 234.30 -11.12 Berkeley 75 = Cl Berkeley 75 06 41 16 -16 29 12 226.61 -09.69 Berkeley 25 = Cl Berkeley 25 ------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 941 Photometry of Berkeley 73 table2.dat 89 1035 Photometry of Berkeley 75 table3.dat 89 1039 Photometry of Berkeley 25
See also: J/A+A/429/607 : BV photometry of Berkeley 36, 73 and 34 (Ortolani+, 2005) J/A+A/372/71 : King 5 and Berkeley 20 UBVRI photometry (Durgapal+, 2001) J/A+A/372/879 : JKBV photometry of NGC 2141 (Carraro+, 2001) J/A+A/379/136 : UBVRI photometry of 3 young open clusters (Carraro+, 2001) J/A+A/429/607 : BV photometry of Berkeley 36, 73 and 34 (Ortolani+, 2005) J/MNRAS/299/834 : Berkeley 21 BVI photometry (Tosi+, 1998) J/MNRAS/346/18 : VIc photometry in Saurer A, B and C (Carraro+, 2003) J/MNRAS/349/641 : VIc, CT1 magnitudes in Trumpler 5 (Piatti+, 2004) Byte-by-byte Description of file: table1.dat table2.dat table3.dat
Bytes Format Units Label Explanations
1- 4 I4 --- Seq Sequential number, in the cluster 7 I1 h RAh Right ascension (J2000) 8 A1 --- --- [:] 9- 10 I2 min RAm Right ascension (J2000) 11 A1 --- --- [:] 12- 16 F5.2 s RAs Right ascension (J2000) 18 A1 --- DE- Declination sign (J2000) 19- 20 I2 deg DEd Declination (J2000) 21 A1 --- --- [:] 22- 23 I2 arcmin DEm Declination (J2000) 24 A1 --- --- [:] 25- 29 F5.2 arcsec DEs Declination (J2000) 33- 39 F7.4 mag Bmag ?=99.9999 B band magnitude 43- 49 F7.4 mag e_Bmag ?=0.0000 Error in B band magnitude 53- 59 F7.4 mag Vmag ?=99.9999 V band magnitude 63- 69 F7.4 mag e_Vmag ?=99.9990 Error in V band magnitude 73- 79 F7.4 mag Imag ?=99.9999 I band magnitude 83- 89 F7.4 mag e_Imag ?=99.9999 Error in I band magnitude
Acknowledgements: Giovanni Carraro, gcarraro(at)das.uchile.cl
(End) Patricia Vannier [CDS] 10-Aug-2005
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

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