BINARY STARS IN GLOBULAR-CLUSTERS - DETECTION OF A BINARY SEQUENCE INNGC-2808

Authors
FERRARO FR CARRETTA E PECCI FF ZAMBONI A
Citation
Fr. Ferraro et al., BINARY STARS IN GLOBULAR-CLUSTERS - DETECTION OF A BINARY SEQUENCE INNGC-2808, Astronomy and astrophysics, 327(2), 1997, pp. 598-601
Citations number
15
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
327
Issue
2
Year of publication
1997
Pages
598 - 601
Database
ISI
SICI code
0004-6361(1997)327:2<598:BSIG-D>2.0.ZU;2-W
Abstract
A CCD V,V - I colour-magnitude diagram (CMD) of the Galactic globular cluster NGC 2808 has been obtained with the ESO-NTT, reaching down to V similar to 24.The highly populated Main Sequence (MS) presents a sig nificant broadening redward to the MS ridge line, larger than expected from photometric errors alone, which could be interpreted as due to b inary candidates.