... NGC 6791: An Old, Large OpenCluster . Credit: Barbara J. Mochejska ( CAMK ) et al., 2.1-m Telescope , KPNO , NOAO , NSF . ... Explanation: NGC 6791 is one of the oldest and largest openclusters of stars known. But how did it get so dirty? ...
... their birth, but others survive and emerge from their parental gas as openclusters ... Young openclusters of few Myr of age are characterised by a population of high-mass ...
... Detection of the lithium depletion boundary in the young opencluster IC 4665 . ... Lithium abundances in the old opencluster NGC 3960 from VLT/FLAMES observations . ... Element abundances in the metal rich opencluster NGC6253 . ...
... Old openclusters as key tracers of Galactic chemical evolution. ... Exploring the lower mass function in the young opencluster IC 4665 . ... A deep wide-field optical survey in the young opencluster Collinder 359 . ...
... their birth, but others survive and emerge from their parental gas as openclusters ... Young openclusters of few Myr of age are characterised by a population of high-mass ...
... Credit: AURA , NOAO , NSF . Explanation: To some, the outline of the opencluster of stars M6 resembles a butterfly. ... Like other openclusters , M6 is composed predominantly of young blue stars , although the brightest star is nearly orange. ...
... Ser.) in press . Optical follow-up of ROSAT discovered candidate members of the opencluster Coma Berenices . ... 2000, A Lett., in press . A ROSAT HRI study of the opencluster NGC3532 . E. Franciosini, S. Randich, R. Pallavicini . ...
... E-mail: . Evolution of lithium abundances in openclusters . X-ray emission from openclusters and star-forming regions . ... X-ray emission from openclusters and star-forming regions . English version and abstract . Official Italian version .. ...