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The OmegaWhite survey for short-period variable stars - V. Discovery of an ultracompact hot subdwarf binary with a compact companion in a 44 minute orbit
T. Kupfer, G. Ramsay, J. van Roestel +20
We report the discovery of the ultracompact hot subdwarf (sdOB) binary OW J074106.0-294811.0 with an orbital period of P min, making it the…
The Outer Halo of the Milky Way as Probed by RR Lyr Variables from the Palomar Transient Facility
Judith Cohen, Branimir Sesar, Sophianna Bahnolzer +5
RR Lyr stars are ideal massless tracers that can be used to study the total mass and dark matter content of the outer halo of the Milky Way. This is because they are easy to find i…
Processing Images from the Zwicky Transient Facility
Russ R. Laher, Frank J. Masci, Steve Groom +25
The Zwicky Transient Facility is a new robotic-observing program, in which a newly engineered 600-MP digital camera with a pioneeringly large field of view, 47~square degrees, will…
Long-term Periodicities of Cataclysmic Variables with Synoptic Surveys
Michael Ting-Chang Yang, Yi Chou, Chow-Choong Ngeow +12
A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the…
Confirmation of Large Super-Fast Rotator (144977) 2005 EC127
Chan-Kao Chang, Hsing-Wen Lin, Wing-Huen Ip +7
(144977) 2005 EC127 is an V-/A-type inner-main-belt asteroid with a diameter of 0.6 +- 0.1 km. Asteroids of this size are believed to have rubble-pile structure, and, therefore, ca…
PTF1 J085713+331843, a new post common-envelope binary in the orbital period gap of cataclysmic variables
J. van Roestel, P. J. Groot, D. Levitan +6
We report the discovery and analysis of PTF1 J085713+331843, a new eclipsing post common-envelope detached white-dwarf red-dwarf binary with a 2.5h orbital period discovered by the…