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On the Nature of the Progenitor of the Type Ia SN2011fe in M101
Jifeng Liu, Rosanne Di Stefano, Tao Wang +1
The explosion of a Type Ia supernova, SN 2011ef, in the nearby Pinwheel galaxy (M101 at 6.4 Mpc) provides an opportunity to study pre-explosion images and search for the progenitor…
DASCH Discovery of A Possible Nova-like Outburst in A Peculiar Symbiotic Binary
Sumin Tang, Jonathan Grindlay, Maxwell Moe +4
We present photometric and spectroscopic observations of a peculiar variable (designated DASCH J075731.1+201735 or J0757) discovered from our DASCH project using the digitized Harv…
Galactic Scale Absorption Outflow in the Low Luminosity Quasar IRAS~F04250-5718: HST/COS Observations
Doug Edmonds, Benoit Borguet, Nahum Arav +17
We present absorption line analysis of the outflow in the quasar IRAS F04250-5718. Far-ultraviolet data from the Cosmic Origins Spectrograph onboard the Hubble Space Telescope reve…