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13 papers · 1 filter
La Silla-QUEST RR Lyrae Star Survey II: The Crater II Tidal Streams
P. S. Coppi, R. Zinn, C. Baltay +5
We describe photometry improvements in the La Silla--Quest RR Lyrae star (RRLS) survey that enable it to reach distances from the Sun () kpc. We report the re…
Milky Way thin and thick disk kinematics with GAIA EDR3 and RAVE DR5
Katherine Vieira, Giovanni Carraro, Vladimir Korchagin +3
We present a detailed analysis of kinematics of the Milky Way disk in solar neighborhood using GAIA DR3 catalog. To determine the local kinematics of the stellar disks of the Milky…
A New Proper Motion Determination of Leo I
Dana I. Casetti-Dinescu, Caitlin K. Hansen, Terrence M. Girard +3
We measure the absolute proper motion of Leo I using a WFPC2/HST data set that spans up to 10 years, to date the longest time baseline utilized for this satellite. The measurement…
Local RR Lyrae Stars: native and alien
R. Zinn, X. Chen, A. C. Layden +1
Measurements of [Fe/H] and radial velocity are presented for 89 RR Lyrae (RRL) candidates within 6 kpc of the Sun. After removal of two suspected non-RRL, these stars were added to…
A Kinematically Cold Structure of Candidate Young OB Stars Toward The Anticenter
Dana I. Casetti-Dinescu, Terrence M. Girard
We combine GALEX and Gaia DR2 catalogs to track star formation in the outskirts of our Galaxy. Using photometry, proper motions and parallaxes we identify a structure of ~ 300 OB-t…
The Origins of Young Stars in the Direction of the Leading Arm of the Magellanic Stream: Abundances, Kinematics, and Orbits
Lan Zhang, Dana I. Casetti-Dinescu, Christian Moni Bidin +6
We explore the origins of the young B-type stars found by Casetti-Dinescu et al.(2014) at the outskirts of the Milky-Way disk in the sky region of Leading Arm of the Magellanic Str…