SN 2008gz – most likely a normal Type IIP event
dc.contributor.author | Roy, Rupak | en_US |
dc.contributor.author | Kumar, Brijesh | en_US |
dc.contributor.author | Moskvitin, Alexander S. | en_US |
dc.contributor.author | Benetti, Stefano | en_US |
dc.contributor.author | Fatkhullin, Timur A. | en_US |
dc.contributor.author | Kumar, Brajesh | en_US |
dc.contributor.author | Misra, Kuntal | en_US |
dc.contributor.author | Bufano, Filomena | en_US |
dc.contributor.author | Martin, Ralph | en_US |
dc.contributor.author | Sokolov, Vladimir V. | en_US |
dc.contributor.author | Pandey, S. B. | en_US |
dc.contributor.author | Chandola, H. C. | en_US |
dc.contributor.author | Sagar, Ram | en_US |
dc.date.accessioned | 2011-11-10T15:34:13Z | |
dc.date.available | 2012-07-12T17:42:24Z | en_US |
dc.date.issued | 2011-06-11 | en_US |
dc.identifier.citation | Roy, Rupak; Kumar, Brijesh; Moskvitin, Alexander S.; Benetti, Stefano; Fatkhullin, Timur A.; Kumar, Brajesh; Misra, Kuntal; Bufano, Filomena; Martin, Ralph; Sokolov, Vladimir V.; Pandey, S. B.; Chandola, H. C.; Sagar, Ram (2011). "SN 2008gz – most likely a normal Type IIP event." Monthly Notices of the Royal Astronomical Society 414(1). <http://hdl.handle.net/2027.42/86933> | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.issn | 1365-2966 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/86933 | |
dc.description.abstract | We present BVRI photometric and low‐resolution spectroscopic investigation of the Type II core‐collapse supernova (SN) 2008gz, which occurred in a star‐forming arm and within a half‐light radius (solar metallicity region) of the nearby spiral galaxy NGC 3672. The SN event was detected late, and a detailed investigation of its light curves and spectra spanning 200 d suggest that it is an event of Type IIP similar to the archetypal SNe 2004et and 1999em. However, in contrast to other events of its class, SN 2008gz exhibits a rarely observed V magnitude drop of 1.5 over the period of a month during the plateau to nebular phase. Using an A V of 0.21 mag as a lower limit and a distance of 25.5 Mpc, we estimate a synthesized 56 Ni mass of 0.05 ± 0.01 M ⊙ , a mid‐plateau M V of −16.6 ± 0.2 mag and a total radiant energy of ∼10 49 erg . The photospheric velocity is observed to be higher than observed for SN 2004et at similar epochs, indicating that the explosion energy was comparable to or higher than that of SN 2004et. A similar trend was also seen for the expansion velocity of H envelopes. By comparing the properties of SN 2008gz with other well‐studied events, as well as by using a recent simulation of pre‐SN models by Dessart, Livne & Waldman, we infer an explosion energy range of 2–3 × 10 51 erg , and this coupled with the observed width of the forbidden [O i ] 6300–6364 Å line at 275 d after the explosion gives an upper limit for the main‐sequence (non‐rotating, solar metallicity) progenitor mass of 17 M ⊙ . Our narrow‐band Hα observation, taken nearly 560 d after the explosion, and the presence of an emission kink at zero velocity in the Doppler‐corrected spectra of SN indicate that the event took place in a low‐luminosity star‐forming H ii region. | en_US |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.publisher | Wiley Periodicals, Inc. | en_US |
dc.subject.other | Supernovae: General | en_US |
dc.subject.other | Supernovae: Individual: SN 2008gz | en_US |
dc.subject.other | Galaxies: Distances and Redshifts | en_US |
dc.subject.other | Galaxies: Individual: NGC 3672 | en_US |
dc.title | SN 2008gz – most likely a normal Type IIP event | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Astronomy | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationother | Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263129, India | en_US |
dc.contributor.affiliationother | Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo‐Cherkesia 369167, Russia | en_US |
dc.contributor.affiliationother | Istituto Nazionale di Astrofisica, Observatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy | en_US |
dc.contributor.affiliationother | Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août 17, Bât B5c, 4000 Liège, Belgium | en_US |
dc.contributor.affiliationother | Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA | en_US |
dc.contributor.affiliationother | Inter University Center for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411007, India | en_US |
dc.contributor.affiliationother | Perth Observatory, 337 Walnut Road, Bickley 6076, Perth, Australia | en_US |
dc.contributor.affiliationother | Randall Laboratory of Physics, Univ. Michigan, 450 Church St., Ann Arbor, MI 48109‐1040, USA | en_US |
dc.contributor.affiliationother | Department of Physics, Kumaun University, Nainital, India | en_US |
dc.identifier.pmid | 9119529 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/86933/1/j.1365-2966.2011.18363.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2966.2011.18363.x | en_US |
dc.identifier.source | Monthly Notices of the Royal Astronomical Society | en_US |
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