Multicolour CCD Photometric Study of Galactic Star Clusters SAI 63 and SAI 75

Autor:	E. V. Glushkova, S. I. Leonova, Ram Sagar, R. K. S. Yadav
Rok vydání:	2014
Předmět:	Physics Star cluster Space and Planetary Science Astronomy and Astrophysics Astrophysics Open cluster
Zdroj:	Journal of Astrophysics and Astronomy. 35:143-156
ISSN:	0973-7758 0250-6335
DOI:	10.1007/s12036-014-9302-0
Popis:	We present U B V I CCD photometric observations obtained in the field of open clusters SAI 63 and SAI 75. CCD optical data obtained for the first time for these clusters are used to derive the fundamental parameters of the clusters. Stellar surface density profile indicates that radii of SAI 63 and SAI 75 are ∼3′.5 and 2′.5 respectively. The reddenings E(B−V) are 0.44±0.05 and 0.34±0.05 mag for SAI 63 and SAI 75 respectively while the corresponding distances are 2.2 ± 0.2 and 3.5±0.3 kpc. An age of 450 ± 50 Myr for SAI 63 and 90 ± 10 Myr for SAI 75 is determined using the theoretical isochrones of Z=0.019. Our analysis shows that reddening law is normal towards SAI 75.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9cca037b9a765f53e8ac438a4b8d3f47 https://doi.org/10.1007/s12036-014-9302-0 Zobrazit plný text záznamu Plný text ve formátu PDF