The death of massive stars - I. Observational constraints on the progenitors of Type II-P supernovae

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dc.contributor.author Smartt, SJ en
dc.contributor.author Eldridge, John en
dc.contributor.author Crockett, RM en
dc.contributor.author Maund JR en
dc.date.accessioned 2012-03-27T20:13:28Z en
dc.date.issued 2009 en
dc.identifier.citation Monthly Notices of the Royal Astronomical Society 395(3):1409-1437 2009 en
dc.identifier.issn 0035-8711 en
dc.identifier.uri http://hdl.handle.net/2292/15680 en
dc.description.abstract We present the results of a 10.5-yr, volume-limited (28-Mpc) search for supernova (SN) progenitor stars. In doing so we compile all SNe discovered within this volume (132, of which 27 per cent are Type Ia) and determine the relative rates of each subtype from literature studies. The core-collapse SNe break down into 59 per cent II-P and 29 per cent Ib/c, with the remainder being IIb (5 per cent), IIn (4 per cent) and II-L (3 per cent). There have been 20 II-P SNe with high-quality optical or near-infrared pre-explosion images that allow a meaningful search for the progenitor stars. In five cases they are clearly red supergiants, one case is unconstrained, two fall on compact coeval star clusters and the other twelve have no progenitor detected. We review and update all the available data for the host galaxies and SN environments (distance, metallicity and extinction) and determine masses and upper mass estimates for these 20 progenitor stars using the STARS stellar evolutionary code and a single consistent homogeneous method. A maximum likelihood calculation suggests that the minimum stellar mass for a Type II-P to form is mmin = 8.5+1-1.5Msolar and the maximum mass for II-P progenitors is mmax = 16.5 +/- 1.5Msolar, assuming a Salpeter initial mass function holds for the progenitor population (in the range Γ = -1.35+0.3-0.7). The minimum mass is consistent with current estimates for the upper limit to white dwarf progenitor masses, but the maximum mass does not appear consistent with massive star populations in Local Group galaxies. Red supergiants in the Local Group have masses up to 25Msolar and the minimum mass to produce a Wolf-Rayet star in single star evolution (between solar and LMC metallicity) is similarly 25-30Msolar. The reason we have not detected any high-mass red supergiant progenitors above 17Msolar is unclear, but we estimate that it is statistically significant at 2.4σ confidence. Two simple reasons for this could be that we have systematically underestimated the progenitor masses due to dust extinction or that stars between 17-25Msolar produce other kinds of SNe which are not II-P. We discuss these possibilities and find that neither provides a satisfactory solution. We term this discrepancy the `red supergiant problem' and speculate that these stars could have core masses high enough to form black holes and SNe which are too faint to have been detected. We compare the 56Ni masses ejected in the SNe to the progenitor mass estimates and find that low-luminosity SNe with low 56Ni production are most likely to arise from explosions of low-mass progenitors near the mass threshold that can produce a core-collapse. en
dc.publisher RAS en
dc.relation.ispartofseries Monthly Notices of the Royal Astronomical Society en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0035-8711/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title The death of massive stars - I. Observational constraints on the progenitors of Type II-P supernovae en
dc.type Journal Article en
dc.identifier.doi 10.1111/j.1365-2966.2009.14506.x en
pubs.issue 3 en
pubs.begin-page 1409 en
pubs.volume 395 en
dc.rights.holder Copyright: RAS; The Authors en
pubs.end-page 1437 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 244566 en
pubs.org-id Science en
pubs.org-id Physics en
pubs.record-created-at-source-date 2011-11-25 en


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