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Swift observations of the ultraluminous X-ray source XMMU J004243.6+412519 in M31
P. Esposito, S. E. Motta, F. Pintore +2
We report on a multi-wavelength study of the recently discovered X-ray transient XMMU J004243.6+412519 in M31, based on data collected with Swift and the 1.8-m Copernico Telescope…
Interacting Supernovae and Supernova Impostors. SN 2009ip, is this the end?
A. Pastorello, E. Cappellaro, C. Inserra +41
We report the results of a 3 year-long dedicated monitoring campaign of a restless Luminous Blue Variable (LBV) in NGC 7259. The object, named SN 2009ip, was observed photometrical…
The Type IIb Supernova 2011dh from a Supergiant Progenitor
Melina C. Bersten, Omar G. Benvenuto, Ken'ichi Nomoto +10
A set of hydrodynamical models based on stellar evolutionary progenitors is used to study the nature of SN 2011dh. Our modeling suggests that a large progenitor star ---with R ~200…
Red and dead: The progenitor of SN 2012aw in M95
M. Fraser, J. R. Maund, S. J. Smartt +17
Core-collapse supernovae (SNe) are the spectacular finale to massive stellar evolution. In this Letter, we identify a progenitor for the nearby core-collapse SN 2012aw in both grou…
A spectroscopically normal type Ic supernova from a very massive progenitor
Stefano Valenti, Stefan Taubenberger, Andrea Pastorello +17
We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with mode…
Asiago eclipsing binaries program. IV. SZ Camelopardalis, a beta Cephei pulsator in a quadruple, eclipsing system
E. Tamajo, U. Munari, A. Siviero +2
We present a spectroscopic and photometric analysis of the multiple system and early-type eclipsing binary SZ Cam (O9IV + B0.5V), which consists of an eclipsing SB2 pair of orbital…