| Autor: |
Bartašiūtė S., Janusz R., Boyle R. P., Philip A. G. Davis |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Open Astronomy, Vol 20, Iss 1, Pp 27-52 (2011) |
| Druh dokumentu: |
article |
| ISSN: |
2543-6376 |
| DOI: |
10.1515/astro-2017-0267 |
| Popis: |
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 MV, interstellar reddening values EY−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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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