Astrometry of the Open Cluster M25

@article{Tadross2002AstrometryOT,
  title={Astrometry of the Open Cluster M25},
  author={Ashraf latif Tadross and M. Marie and A. Osman and Syed Moeez Hassan},
  journal={Astrophysics and Space Science},
  year={2002},
  volume={282},
  pages={607-623}
}
The young open star cluster M25 (IC 4725) is located in the direction of the galactic center, near much irregular absorption features on Sagittarius arm. This system is found to be at a distance of 600 pc, with a median age of 9.45 × 107 years and a distance from the galactic plane of –52.82 pc The mass data available in the literature has been gathered and many statistical methods have been applied for this cluster. Depending only on these methods, the stellar density, the distribution of dark… Expand
A comprehensive study of the young open star cluster NGC 6611 based on deep VRI CCD images and 2MASS data
Abstract In the present study, we have used Deep CCD images of the extremely young open star cluster NGC 6611, up to a limiting magnitude of V ∼ 22.86 mag in V, R and I passbands. The resultingExpand
A New Analysis in the Field of the Open Cluster Collinder 223
The present study of the open cluster Collinder 223 (Cr 223) depended greatly on the photoelectric data of Claria and Lapasset. We use the data in conjunction with the AAO/DSS 1 image of the clusterExpand

References

SHOWING 1-10 OF 23 REFERENCES
Mass functions for eight nearby galactic clusters
Mass functions for eight nearby galactic clusters have been obtained using proper-motion membership probabilities. Based on the magnitude dependence of the membership-probability parameter in theExpand
The distribution of interstellar matter in NGC 654
The young cluster NGC 654 is studied using UBV photographic photometry with a view to determining the distribution of interstellar matter in a region where star formation recently occurred.NGC 654 isExpand
The Luminosity function and stellar evolution
The evolutionary significance of the observed luminosity function for main-sequence stars in the solar neighborhood is discussed. The hypothesis is made that stars move off the main sequence afterExpand
UBV(RI)c observations for 13 bright Cepheids
Photometry in the UBV(RI) c system has been obtained for 13 of the brightest Cepheids in the southern sky available to the new Sydney University Stellar Interferometer (SUSI). The stars observed wereExpand
Four-color and H-beta photometry of stars in NGC 7654 and M25
Four-color and H-beta photometry has been obtained of stars in the galactic clusters NGC 7654 and M25. An analysis of these data shows variable extinction in both clusters. The distance modulus ofExpand
Evolution of 0. 7--3. 0 M/sub sun/ stars having -1. 0< or =(Fe/H)< or =0. 0
Five grids of stellar models have been calculated for masses ranging from 0.7 to 3.0 M/sub sun/ assuming, in turn, a metal abundance (Fe/H) = -1.0, -0.76, -0.46, -0.23, and 0.0. All of theExpand
Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas
Photometry and spectroscopy are among the most important and fundamental types of astronomical observations. By the middle of the twentieth century most spectral classification was defined in termsExpand
...
1
2
3
...