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Searching for Be Stars in the Open Cluster NGC 663
P. C. Yu, C. C. Lin, W. P. Chen +6
We present Be star candidates in the open cluster NGC\,663, identified by H imaging photometry with the Palomar Transient Factory Survey, as a pilot program to investigate how t…
Long-term Photometric Behavior of Outbursting AM CVn Systems
David Levitan, Paul J. Groot, Thomas A. Prince +5
The AM CVn systems are a class of He-rich, post-period minimum, semi-detached, ultra-compact binaries. Their long-term light curves have been poorly understood due to the few syste…
The hydrogen-poor superluminous supernova iPTF13ajg and its host galaxy in absorption and emission
Paul M. Vreeswijk, Sandra Savaglio, Avishay Gal-Yam +24
We present imaging and spectroscopy of a hydrogen-poor superluminous supernova (SLSN) discovered by the intermediate Palomar Transient Factory: iPTF13ajg. At a redshift of z=0.7403…
Stacking the Invisibles: A Guided Search for Low-Luminosity Milky Way Satellites
B. Sesar, S. R. Banholzer, J. G. Cohen +9
Almost every known low-luminosity Milky Way dwarf spheroidal (dSph) satellite galaxy contains at least one RR Lyrae star. Assuming that a fraction of distant (60 < d_{helio} < 100…
A New Large Super-Fast Rotator: (335433) 2005 UW163
Chan-Kao Chang, Adam Waszczak, Hsing-Wen Lin +5
Asteroids of size larger than 150 m generally do not have rotation periods smaller than 2.2 hours. This spin cutoff is believed to be due to the gravitationally bound rubble-pile s…
Slow-Speed Supernovae from the Palomar Transient Factory: Two Channels
Christopher J. White, Mansi M. Kasliwal, Peter E. Nugent +20
Since the discovery of the unusual prototype SN 2002cx, the eponymous class of low-velocity, hydrogen-poor supernovae has grown to include at most another two dozen members identif…