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8 papers · 2 filters
Five old open clusters more in the outer Galactic disk
Giovanni Carraro, Yuri Beletsky, Gianni Marconi
New photometric material is presented for 6 outer disk supposedly old, Galact ic star clusters: Berkeley 76, Haffner 4, Ruprecht 10, Haffner 7, Haffner 11, and Haffner 15, that are…
Photometric distances to young stars in the inner galactic disk
Gabriel Perren, Rubén Vázquez, Giovanni Carraro
We present results of the first extensive and deep CCD photometric survey carried out in the field of the open cluster Trumpler 27, an object in the constellation of Sagittarius no…
The distance to the young open cluster Westerlund 2
Giovanni Carraro, David Turner, Daniel Majaess +1
Evidence is presented indicating that the young star cluster Westerlund~2 lies kpc in the direction of Carina. The distance is tied partly to new photo…
The Unique Na:O Abundance Distribution in NGC 6791: The First Open(?) Cluster with Multiple Populations
D. Geisler, S. Villanova, G. Carraro +4
Almost all globular clusters investigated exhibit a spread in their light element abundances, the most studied being a Na:O anticorrelation. In contrast, open clusters show a homog…
Comments on the "Monoceros" affair
M. Lopez-Corredoira, A. Moitinho, S. Zaggia +5
This is a brief note to comment on some recent papers addressing the Monoceros ring. In our view, nothing new was delivered on the matter: No new evidence or arguments are presente…
The origin and orbit of the old, metal-rich, open cluster NGC 6791: Insights from kinematics
L. Jilkova, G. Carraro, B. Jungwiert +1
NGC 6791 is a unique stellar system among Galactic open clusters being at the same time one of the oldest open clusters and the most metal rich. Combination of its properties is pu…
Stellar lifetime and ultraviolet properties of the old metal-rich Galactic open cluster NGC6791: a pathway to understand the UV upturn of elliptical galaxies
Alberto Buzzoni, Emanuele Bertone, Giovanni Carraro +1
The evolutionary properties of the old metal-rich Galactic open cluster NGC6791 are assessed, based on deep UB photometry and 2Mass JK data. For 4739 stars in the cluster, bolometr…
Kinematical and chemical vertical structure of the Galactic thick disk I. Thick disk kinematics
C. Moni Bidin, G. Carraro, R. A. Mendez
The variation of the kinematical properties of the Galactic thick disk with Galactic height Z are studied by means of 412 red giants observed in the direction of the south Galactic…