The Rise of the Remarkable Type IIn Supernova SN 2009ip
Abstract
Recent observations by Mauerhan et al. have shown the unprecedented transition of the previously identified luminous blue variable (LBV) and supernova (SN) impostor SN 2009ip to a real Type IIn SN explosion. We present ~100 optical R- and I-band photometric measurements of SN 2009ip obtained between UT 2012 September 23.6 and October 9.6, using 0.3-0.4 m aperture telescopes from the Coral Towers Observatory in Cairns, Australia. The light curves show well-defined phases, including very rapid brightening early on (0.5 mag in 6 hr observed during the night of September 24), a transition to a much slower rise between September 25 and September 28, and a plateau/peak around October 7. These changes are coincident with the reported spectroscopic changes that most likely mark the start of a strong interaction between the fast SN ejecta and a dense circumstellar medium formed during the LBV eruptions observed in recent years. In the 16-day observing period, SN 2009ip brightened by 3.7 mag from I = 17.4 mag on September 23.6 (M_I ≃ –14.2) to I = 13.7 mag (M_I ≃ –17.9) on October 9.6, radiating ~3 × 10^(49) erg in the optical wavelength range. As of 2012 October 9.6, SN 2009ip is more luminous than most Type IIP SN and comparable to other Type IIn SN.
Additional Information
© 2013 American Astronomical Society. Received 2012 October 11; accepted 2012 December 20; published 2013 January 11. We thank S. de Mink, O. Graur, J. Mauerhan, R. Quimby, and A. Rest for stimulating discussions about SN 2009ip, and L. Watson for detailed comments on an earlier version of this manuscript. We thank the anonymous referee for detailed comments. J.L.P. acknowledges support from a Carnegie-Princeton Fellowship.Attached Files
Published - 2041-8205_763_2_L27.pdf
Submitted - 1210.3347v2.pdf
Files
Name | Size | Download all |
---|---|---|
md5:316cbbb5fdc4361fc96bd497b4ab7a86
|
232.1 kB | Preview Download |
md5:d55f95cf7dc2b5b6c13c5be22f140744
|
559.5 kB | Preview Download |
Additional details
- Alternative title
- The Rise of the Remarkable Type IIn Supernova SN 2009ip
- Eprint ID
- 42480
- Resolver ID
- CaltechAUTHORS:20131115-082455140
- Carnegie-Princeton Fellowship
- Created
-
2013-11-15Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field