Star clusters or asterisms? 2MASS CMD and structural analyses of 15 challenging targets

Дата и время публикации : 2011-04-11T13:30:42Z

Авторы публикации и институты :
Eduardo Bica
Charles Bonatto

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: Accepted by A&A
Первичная категория: astro-ph.GA

Все категории : astro-ph.GA

Краткий обзор статьи: (Abridged) Poorly-populated star clusters may have photometric and structural properties not much different from asterisms, to the point that, in some cases, widely-used databases present conflicting classifications. We investigate the nature of a sample of challenging targets that have been classified either as star clusters or asterisms in different studies. A few objects are studied for the first time.

Category: Physics