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Exploring the Galactic Anticenter substructure with LAMOST & Gaia DR2
Jing Li, Xiang-Xiang Xue, Chao Liu +12
We characterize the kinematic and chemical properties of 589 Galactic Anticenter Substructure Stars (GASS) with K-/M- giants in Integrals-of-Motion space. These stars likely includ…
Value-added catalogs of M type stars in LAMOST DR5
Jing Zhong, Jing Li, Jeffrey L. Carlin +3
In this work, we present new catalogs of M giant and M dwarf stars from the LAMOST DR5. In total, 39,796 M giants and 501,152 M dwarfs are identified from the classification pipeli…
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…
In-Situ Star Formation in the Outskirts of the Large Magellanic Cloud: Gaia DR2 Confirmation
Dana I. Casetti-Dinescu, Terrence M. Girard, Christian Moni Bidin +5
We explore the Gaia DR2 proper motions of six young, main-sequence stars, members of the Large Magellanic Cloud (LMC) reported by Moni Bidin et al. (2017). These stars are located…
Young stars in the periphery of the Large Magellanic Cloud
C. Moni Bidin, D. I. Casetti-Dinescu, T. M. Girard +5
Despite their close proximity, the complex interplay between the two Magellanic Clouds, the Milky Way, and the resulting tidal features, is still poorly understood. Recent studies…
Recent Star Formation in the Leading Arm of the Magellanic Stream
Dana I. Casetti-Dinescu, Christian Moni Bidin, Terrence M. Girard +4
Strongly interacting galaxies undergo a short-lived but dramatic phase of evolution characterized by enhanced star formation, tidal tails, bridges and other morphological peculiari…
OB stars in the Leading Arm of the Magellanic Stream
C. Moni Bidin, D. I. Casetti-Dinescu, R. A. Mendez +4
We present our spectroscopic program aimed to study some new interesting features recently discovered in the Magellanic Cloud System. These were revealed by the spatial distributio…
Kinematical and chemical vertical structure of the Galactic thick disk II. A lack of dark matter in the solar neighborhood
C. Moni Bidin, G. Carraro, R. A. Mendez +1
We estimated the dynamical surface mass density Sigma at the solar position between Z=1.5 and 4 kpc from the Galactic plane, as inferred from the kinematics of thick disk stars. Th…
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…
First ground-based CCD proper motions for Fornax II: Final results
Rene. A. Mendez, Edgardo Costa, Carme Gallart +3
We present the first entirely ground-based astrometric determination of the proper motion for the Fornax Local Group Dwarf Spheroidal satellite galaxy of the Milky Way, using CCD d…
No evidence for a dark matter disk within 4 kpc from the Galactic plane
C. Moni Bidin, G. Carraro, R. A. Mendez +1
We estimated the dynamical surface mass density (Sigma) at the solar Galactocentric distance between 2 and 4 kpc from the Galactic plane, as inferred from the observed kinematics o…