J/MNRAS/424/1132 BVI photometry of Be 27, Be 24 and Be 36 (Donati+, 2012)
The anticentre old open clusters Berkeley 27, Berkeley 34 and Berkeley 36:
new additions to the BOCCE project.
Donati P., Bragaglia A., Cignoni M., Cocozza G., Tosi M.
<Mon. Not. R. Astron. Soc., 424, 1132-1148 (2012)>
=2012MNRAS.424.1132D 2012MNRAS.424.1132D
ADC_Keywords: Clusters, open ; Photometry, UBVRI
Keywords: Hertzsprung-Russel and colour-magnitude diagrams -
Galaxy: disc - open clusters and associations: general -
open clusters and associations: individual: Berkeley 27 -
open clusters and associations: individual: Berkeley 34 -
open clusters and associations: individual: Berkeley 36
Abstract:
In this paper, we present the investigation of the evolutionary status
of three open clusters: Berkeley 27, Berkeley 34 and Berkeley 36, all
located in the Galactic anticentre direction. All of them were
observed with SUperb Seeing Imager 2 at the New Technology Telescope
using the Bessel B, V and I filters.
Description:
High quality photometry of three open clusters has been acquired at
the ESO 3.58m New Technology Telescope (NTT) of the La Silla
Observatory (Chile) with the instrument SUperb Seeing Imager (SUSI2)
in 2005 and 2006. Data was analyzed using Daophot II.
We estimated age, distance, metallicity, and reddening for the three
clusters (Be27, Be34, and Be36) using BVI photometry and the
synthetic-CMD technique (based on data collected at ESO telescopes
under programme 076.D-0119)
Objects:
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RA (2000) DE Designation(s)
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06 51 21 +05 46 07 Be 27 = Berkeley 27 = Cl Biurakan 11
07 00 23 -00 13 56 Be 34 = Berkeley 34 = Cl Biurakan 13
07 16 24 -13 11 35 Be 36 = Berkeley 36
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
be27_bvi.dat 93 1333 Berkeley 27 BVI photometry
be34_bvi.dat 93 1776 Berkeley 34 BVI photometry
be36_bvi.dat 93 2167 Berkeley 36 BVI photometry
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See also:
J/PASJ/56/295 : BVIc photometry of old open clusters (Hasegawa+, 2004)
J/A+A/429/607 : BV photometry of Berkeley 36, 73 and 34 (Ortolani+, 2005)
J/A+A/464/573 : VI photometry of 5 open clusters (Carraro+, 2007)
Byte-by-byte Description of file: be27_bvi.dat be34_bvi.dat be36_bvi.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID Identification index for the stars,
within the cluster
6- 16 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000)
18- 28 F11.7 deg DEdeg Declination in decimal degrees (J2000)
30- 35 F6.3 mag Bmag ?=99.999 Bessel B magnitude
37- 41 F5.3 mag e_Bmag ?=9.999 Error on magnitude B (1)
43- 48 F6.3 mag Vmag ?=99.999 Bessel V magnitude calibrated
using (B-V) color index
50- 54 F5.3 mag e_Vmag ?=9.999 Error on magnitude V (1)
56- 61 F6.3 mag V2mag ?=99.999 Bessel V magnitude calibrated
using (V-I) color index
63- 67 F5.3 mag e_V2mag ?=9.999 Error on magnitude V2 (1)
69- 74 F6.3 mag Imag ?=99.999 Bessel I magnitude
76- 80 F5.3 mag e_Imag ?=9.999 Error on magnitude I (1)
82- 87 F6.3 --- chi2 Chi square of the PSF photometry (1)
89- 93 F5.3 --- sh Sharpness index of the PSF photometry
(0=star; <0=cosmic rays; >0=extended) (1)
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Note (1): Errors, chi2, and sh are the parameters of Daophot II.
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Acknowledgements:
Paolo Donati, paolo.donati4(at)unibo.it
(End) Patricia Vannier [CDS] 24-Jan-2013