dc.contributor.author | Milisavljevic, Danny | |
dc.contributor.author | Soderberg, Alicia M. | |
dc.contributor.author | Margutti, Raffaella | |
dc.contributor.author | Drout, Maria Rebecca | |
dc.contributor.author | Marion, G. Howie | |
dc.contributor.author | Sanders, Nathan Edward | |
dc.contributor.author | Hsiao, Eric Y. | |
dc.contributor.author | Lunnan, Ragnhild | |
dc.contributor.author | Chornock, Ryan | |
dc.contributor.author | Fesen, Robert A. | |
dc.contributor.author | Parrent, Jerod T. | |
dc.contributor.author | Levesque, Emily M. | |
dc.contributor.author | Berger, Edo | |
dc.contributor.author | Foley, Ryan J. | |
dc.contributor.author | Challis, Pete | |
dc.contributor.author | Kirshner, Robert P. | |
dc.contributor.author | Dittmann, Jason Adam | |
dc.contributor.author | Bieryla, Allyson | |
dc.contributor.author | Kamble, Atish | |
dc.contributor.author | Chakraborti, Sayan | |
dc.contributor.author | De Rosa, Gisella | |
dc.contributor.author | Fausnaugh, Michael | |
dc.contributor.author | Hainline, Kevin N. | |
dc.contributor.author | Chen, Chien-Ting | |
dc.contributor.author | Hickox, Ryan C. | |
dc.contributor.author | Morrell, Nidia | |
dc.contributor.author | Phillips, Mark M. | |
dc.contributor.author | Stritzinger, Maximilian | |
dc.date.accessioned | 2017-03-01T21:44:09Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Milisavljevic, Dan, Alicia M. Soderberg, Raffaella Margutti, Maria R. Drout, G. Howie Marion, Nathan E. Sanders, Eric Y. Hsiao, et al. 2013. Sn 2012au: A Golden Link Between Superluminous Supernovae and Their Lower-Luminosity Counterparts. The Astrophysical Journal 770, no. 2: L38. doi:10.1088/2041-8205/770/2/l38. | en_US |
dc.identifier.issn | 2041-8205 | en_US |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:30485098 | |
dc.description.abstract | We present optical and near-infrared observations of SN 2012au, a slow-evolving supernova (SN) with properties that suggest a link between subsets of energetic and H-poor SNe and superluminous SNe. SN 2012au exhibited conspicuous SN Ib-like He I lines and other absorption features at velocities reaching ≈ 2×104 km s−1 in its early spectra, and a broad light curve that peaked at MB = −18.1 mag. Models of these data indicate a large explosion kinetic energy of ∼ 1052 erg and 56Ni mass ejection of MNi ≈ 0.3M⊙ on par with SN 1998bw. SN 2012au’s spectra almost one year after explosion show a blend of persistent Fe II P-Cyg absorptions and nebular emissions originating from two distinct velocity regions. These late-time emissions include strong [Fe II], [Ca II], [O I], Mg I], and Na I lines at velocities & 4500 km s−1, as well as O I and Mg I lines at noticeably smaller velocities . 2000 km s−1. Many of the late-time properties of SN 2012au are similar to the slow-evolving hypernovae SN 1997dq and SN 1997ef, and the superluminous SN 2007bi. Our observations suggest that a single explosion mechanism may unify all of these events that span −21 . MB . −17 mag. The aspherical and possibly jetted explosion was most likely initiated by the core collapse of a massive progenitor star and created substantial high-density, low-velocity Ni-rich material. | en_US |
dc.description.sponsorship | Astronomy | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | IOP Publishing | en_US |
dc.relation.isversionof | doi:10.1088/2041-8205/770/2/l38 | en_US |
dc.relation.hasversion | https://arxiv.org/pdf/1304.0095.pdf | en_US |
dash.license | OAP | |
dc.subject | supernovae: general | en_US |
dc.subject | supernova: individual (SN 2012au) | en_US |
dc.title | Sn 2012au: A Golden Link Between Superluminous Supernovae and Their Lower-Luminosity Counterparts | en_US |
dc.type | Journal Article | en_US |
dc.description.version | Accepted Manuscript | en_US |
dc.relation.journal | The Astrophysical Journal | en_US |
dash.depositing.author | Berger, Edo | |
dc.date.available | 2017-03-01T21:44:09Z | |
dc.identifier.doi | 10.1088/2041-8205/770/2/l38 | * |
dash.authorsordered | false | |
dash.contributor.affiliated | Bieryla, Allyson | |
dash.contributor.affiliated | Lunnan, R | |
dash.contributor.affiliated | Chornock, R | |
dash.contributor.affiliated | Dittmann, Jason Adam | |
dash.contributor.affiliated | Drout, Maria Rebecca | |
dash.contributor.affiliated | Parrent, Jerod T. | |
dash.contributor.affiliated | Kamble, Atish | |
dash.contributor.affiliated | Margutti, Raffaella | |
dash.contributor.affiliated | Soderberg, Alicia | |
dash.contributor.affiliated | Milisavljevic, Danny | |
dash.contributor.affiliated | Berger, Edo | |
dash.contributor.affiliated | Sanders, Nathan Edward | |