The Unusually Luminous Extragalactic Nova SN 2010U
arXiv:1210.1573 · doi:10.1088/0004-637X/765/1/57
Abstract
We present observations of the unusual optical transient SN 2010U, including spectra taken 1.03 days to 15.3 days after maximum light that identify it as a fast and luminous Fe II type nova. Our multi-band light curve traces the fast decline (t_2 = 3.5 days) from maximum light (M_V = -10.2 mag), placing SN 2010U in the top 0.5% of the most luminous novae ever observed. We find typical ejecta velocities of approximately 1100 km/s and that SN 2010U shares many spectral and photometric characteristics with two other fast and luminous Fe II type novae, including Nova LMC 1991 and M31N-2007-11d. For the extreme luminosity of this nova, the maximum magnitude vs. rate of decline relationship indicates a massive white dwarf progenitor with a low pre-outburst accretion rate. However, this prediction is in conflict with emerging theories of nova populations, which predict that luminous novae from massive white dwarfs should preferentially exhibit an alternate spectral type (He/N) near maximum light.
16 pages, 16 figures. Submitted to the Astrophysical Journal
References in corpus (29)
- Photometric Calibration of the Swift Ultraviolet/Optical Telescope
- The Relation Between Optical Extinction and Hydrogen Column Density in the Galaxy
- The ACS Nearby Galaxy Survey Treasury
- An Extended Grid of Nova Models: II. The Parameter Space of Nova Outbursts
- Luminous Blue Variable eruptions and related transients: Diversity of progenitors and outburst properties
- Discovery of the Dust-Enshrouded Progenitor of SN 2008S with Spitzer
- Optical Imaging of Nova Shells and the Maximum Magnitude-Rate of Decline Relationship
- A New Class of Luminous Transients and A First Census of Their Massive Stellar Progenitors
- SN 2008S: an electron capture SN from a super-AGB progenitor?
- Theoretical Modeling of the Thermal State of Accreting White Dwarfs Undergoing Classical Novae
- Swift X-Ray Observations of Classical Novae. II. The Super Soft Source sample
- An Intermediate Luminosity Transient in NGC300: The Eruption of a Dust-Enshrouded Massive Star
- SN 2009jf: a slow-evolving stripped-envelope core-collapse supernova
- Classical novae from the POINT-AGAPE microlensing survey of M31 -- II. Rate and statistical characteristics of the nova population
- Multiple Major Outbursts from a Restless Luminous Blue Variable in NGC 3432
- Discovery of a new photometric sub-class of faint and fast classical novae
- The Theory of Steady State Super-Eddington Winds and its Application to Novae
- Classical Novae as a Probe of the Cataclysmic Variable Population
- A Prediction Formula of Supersoft X-ray Phase of Classical Novae
- A Spectroscopic and Photometric Survey of Novae in M31
- Discovery and Evolution of an Unusual Luminous Variable Star in NGC 3432 (Supernova 2000ch)
- X-ray monitoring of classical novae in the central region of M 31. II. Autumn and winter 2007/2008 and 2008/2009
- X-ray monitoring of classical novae in the central region of M 31. I. June 2006 - March 2007
- M31N 2007-11d: A Slowly-Rising, Luminous Nova in M31
- Dust to Dust: 3 years in the Evolution of the Unusual SN 2008S
- U Sco 2010 outburst: observational evidence of an underlying ONeMg white dwarf
- The local stellar population of nova regions in the Large Magellanic Cloud
- On the Spectroscopic Classes of Novae in M33
- SN2010U -- a Luminous Nova in NGC 4214
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