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J/A+A/417/961 UBV(RI)c photometry of NGC 2580 and NGC 2588 (Baume+, 2004)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
table3a.dat table3b.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A+A/417/961
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Beginning of ReadMe :J/A+A/417/961 UBV(RI)c photometry of NGC 2580 and NGC 2588 (Baume+, 2004)
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NGC 2580 and NGC 2588. Two open clusters in the Third Galactic Quadrant.
Baume G., Moitinho A., Giorgi E.E., Carraro G., Vazquez R.A.
<Astron. Astrophys., 417, 961-972 (2004)>
=2004A&A...417..961B
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ADC_Keywords: Clusters, open ; Photometry, UBVRI
Keywords: Galaxy: open clusters and associations: general -
Galaxy: open clusters and associations: individual: NGC 2580, NGC 2588
Abstract:
We present CCD broad band photometric observations in the fields of
the Third Galactic Quadrant open clusters NGC 2580 and NGC 2588 (V(I)c
and UBV(RI)c respectively). From the analysis of our data we
found that NGC 2580 is located at a distance of about 4kpc and its
age is close to 160Myr. As for NGC 2588, it is placed at about 5kpc
from the Sun and is 450Myr old. This means that NGC 2588 belongs to
the extension of the Perseus arm, whereas NGC 2580 is closer to the
local arm structure. The luminosity functions (LFs) have been
constructed for both clusters down to V 20 together with their initial
mass functions (IMFs) for stars with masses above M 1-1.5M_sun_. The
IMF slopes for the most massive bins yielded values of x 1.3 for
NGC 2580 and x 2 for NGC 2588. In the case of this latter cluster we
found evidence of a core-corona structure produced probably by
dynamical effect. In the main sequences of both clusters we detected
gaps, which we suggest could be real features.
Description:
Our data set comes from CCD photometric observations carried out in
the course of several runs on different telescopes:
- The European Southern Observatory (ESO): CCD VI observations of the
fields of NGC 2580 and NGC 2588 using the new EMMI read arm camera
at the NTT in the photometric night of December 9, 2002.
- The Complejo Astronomico El Leoncito (CASLEO): In the night January
25, 1996 CCD UBV observations of NGC 2588 were performed using the
215cm telescope.
- The Cerro Tololo Inter-American Observatory (CTIO): UBV(RI)c CCD
photometric data of the field of NGC 2588 were acquired with the
0.9m telescope on the night of January 1, 1998.