5 research outputs found
First PPMXL photometric analysis of open cluster "Ruprecht 15"
We present here our first series in studying the astrophysical parameters of
the open cluster "Ruprecht 15" using PPMXL1 database. In this context, the
photometric, astrometry and statistical parameters for this cluster (limited
radius, core and tidal radii, distances, membership, reddening, age, luminosity
function, mass function, total mass, and the dynamical relaxation time) are
determined for the first time.Comment: 14 pages, 8 figures, 1 tabl
Astrophysical parameters of ten poorly studied open star clusters
We present here the fundamental parameters of ten open star clusters,
nominated from Kronberger et al. (2006) who presented some new discovered
stellar groups on the basis of 2MASS photometry and DSS visual images. Star
counts and photometric parameters (radius, membership, distances, color excess,
age, luminosity function, mass function, total mass, and the dynamical
relaxation time) have been determined for these ten clusters for the first
time. In order to calibrate our procedures, the main parameters (distance, age,
and color excesses) have been re-estimated for another five clusters, which are
studied by Kronberger et al. (2006) as well.Comment: 10 pages, 5 figures, 2 tables; accepted in "Research in Astronomy and
Astrophysics Journal