dc.contributor.author | ESPEY, BRIAN RUSSELL | |
dc.date.accessioned | 2008-06-10T13:38:58Z | |
dc.date.available | 2008-06-10T13:38:58Z | |
dc.date.issued | 1995 | |
dc.date.submitted | 1995 | en |
dc.identifier.citation | Filippenko, Alexei V.; Barth, Aaron J.; Matheson, Thomas; Armus, Lee; Brown, Michael; Espey, Brian R.; Fan, Xiao-Ming; Goodrich, Robert W.; Ho, Luis C.; Junkkarinen, Vesa T.; Koo, David C.; Lehnert, Matthew D.; Martel, Andre R.; Mazzarella, Joseph M.; Miller, Joseph S.; Smith, Graeme H.; Tytler, David; Wirth, Gregory D. 'The type IC supernova 1994I in M51: detection of helium and spectral evolution, in Astrophysical Journal Letters, 450, 1995, pp. L11-L15. | en |
dc.identifier.issn | 51376 | |
dc.identifier.other | Y | |
dc.identifier.other | Y | en |
dc.description | PUBLISHED | en |
dc.description.abstract | We present a series of spectra of SN 1994I in M51, starting 1 week prior to maximum brightness. The nebular
phase began about 2 months after the explosion; together with the rapid decline of the optical light, this suggests
that the ejected mass was small. Although lines of He I in the optical region are weak or absent, consistent with
the Type Ic classification, we detect strong He I l10830 absorption during the first month past maximum. Thus,
if SN 1994I is a typical Type Ic supernova, the atmospheres of these objects cannot be completely devoid of
helium. The emission-line widths are smaller than predicted by the model of Nomoto and coworkers, in which
the iron core of a low-mass carbon-oxygen star collapses. They are, however, larger than in Type Ib supernovae. | en |
dc.format.extent | L11-L15 | en |
dc.format.extent | 236737 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | en |
dc.publisher | American Astronomical Society | en |
dc.relation.ispartofseries | 450 | en |
dc.rights | Y | en |
dc.subject | Physics | en |
dc.title | The Type IC supernova 1994I in M51: detection of helium and spectral evolution | en |
dc.type | Journal Article | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/espeyb | |
dc.identifier.rssuri | http://www.journals.uchicago.edu/doi/pdf/10.1086/309659 | |
dc.identifier.uri | http://hdl.handle.net/2262/17226 | |