We investigate the internal kinematics of the young star-forming region NGC 346 in the Small Magellanic Cloud (SMC). We used two epochs of deep F555W and F814W...
-
PublicationThe Internal Proper Motion Kinematics of NGC 346: Past Formation and Future Evolution
-
PublicationThe Intriguing Stellar Populations in the Globular Clusters NGC 6388 and NGC 6441
NGC 6388 and NGC 6441 are two massive Galactic bulge globular clusters that share many properties, including the presence of an extended horizontal branch (HB)...
-
PublicationThe Missing Satellites of the Magellanic Clouds? Gaia Proper Motions of the Recently Discovered Ultra-faint Galaxies
According to LCDM theory, hierarchical evolution occurs on all mass scales, implying that satellites of the Milky Way should also have companions. The recent...
-
PublicationThe Orbit and Origin of the Ultra-faint Dwarf Galaxy Segue 1
We present the first proper motion measurement for an ultra-faint dwarf spheroidal galaxy, Segue 1, using data from the Sloan Digital Sky Survey (SDSS) and the...
-
PublicationThe Proper Motion Field of the Small Magellanic Cloud: Kinematic Evidence for Its Tidal Disruption
We present a new measurement of the systemic proper motion of the Small Magellanic Cloud (SMC), based on an expanded set of 30 fields containing background...
-
PublicationTrigonometric parallaxes of young field L dwarfs
Aims: We aim to determine the trigonometric parallaxes and proper motions of a sample of ten field L0-L5 dwarfs with spectroscopic evidence for low-gravity...
-
PublicationUBV(RI)cHalpha photometry in omega Cen (Bellini+, 2009)
Wide-field (~33'x33') proper motion catalog for nearly 360000 stars centered around Omega Cen center. Calibrated and sky concentration corrected UBVRCIC wide...
-
PublicationUnidentified quasars among stationary objects from Gaia DR2
Here we apply a technique selecting quasar candidates purely as sources with zero proper motions in the Gaia data release 2 (DR2). We demonstrate that this...
-
PublicationUSco1621 B and USco1556 B: Two wide companions at the deuterium-burning mass limit in Upper Scorpius
Aims: Our objective is to identify analogues of gas giant planets, but located as companions at wide separations of very young stars. The main purpose is to...