Baltic astronomy | |
Vilnius Multicolor CCD Photometry of the Open Cluster NGC 752 | |
article | |
S. Bartašiūtė1  R. Janusz2  R. P. Boyle2  A. G. Davis Philip4  | |
[1] Astronomical Observatory of Vilnius University;Vatican Observatory;Jesuit University of Philosophy and Education “Ignatianum”;ISO and Union College | |
关键词: techniques; photometric stars; fundamental parameters Galaxy; open clusters; individual (NGC 752) Galaxy; stellar content; | |
DOI : 10.1515/astro-2017-0267 | |
来源: Institute of Theoretical Physics and Astronomy | |
【 摘 要 】
We have performed multicolor CCD observations of the central area of NGC 752 to search for faint, low-mass members of this open cluster. Four 12’ x 12’ fields were taken on the 1.8 m Vatican Advanced Technology Telescope (Mt. Graham, Arizona) using a 4K CCD camera and eight intermediate-band filters of the Strömvil (Strömgren + Vilnius) system. In this paper we present a catalog of photometry for 405 stars down to the limiting magnitude V = 18.5, which contains V magnitudes and color indices of the Vilnius system, together with photometric determinations of spectral types, absolute magnitudes M V , interstellar reddening values E Y−V and metallicity parameters [Fe/H]. The good quality multicolor data made it possible to identify the locus of the lower main sequence to four magnitudes beyond the previous (photographic) limit. A relatively small number of photometric members identified at faint magnitudes seems to be indicative of actual dissolution of the cluster from the low-mass end.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO202108210000077ZK.pdf | 2097KB | download |