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Core collapse supernovae missed by optical surveys
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2012 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 756, no 2, 111- p.Article in journal (Refereed) Published
Abstract [en]

We estimate the fraction of core-collapse supernovae (CCSNe) that remain undetected by optical SN searches due to obscuration by large amounts of dust in their host galaxies. This effect is especially important in luminous and ultraluminous infrared galaxies, which are locally rare but dominate the star formation at redshifts of z similar to 1-2. We perform a detailed investigation of the SN activity in the nearby luminous infrared galaxy Arp 299 and estimate that up to 83% of the SNe in Arp 299 and in similar galaxies in the local universe are missed by observations at optical wavelengths. For rest-frame optical surveys we find the fraction of SNe missed due to high dust extinction to increase from the average local value of similar to 19% to similar to 38% at z similar to 1.2 and then remain roughly constant up to z similar to 2. It is therefore crucial to take into account the effects of obscuration by dust when determining SN rates at high redshift and when predicting the number of CCSNe detectable by future high-z surveys such as LSST, JWST, and Euclid. For a sample of nearby CCSNe (distances 6-15 Mpc) detected during the last 12 yr, we find a lower limit for the local CCSN rate of 1.5(-0.3)(+0.4) x 10(-4) yr(-1) Mpc(-3), consistent with that expected from the star formation rate. Even closer, at distances less than similar to 6 Mpc, we find a significant increase in the CCSN rate, indicating a local overdensity of star formation caused by a small number of galaxies that have each hosted multiple SNe.

Place, publisher, year, edition, pages
2012. Vol. 756, no 2, 111- p.
Keyword [en]
galaxies: individual (Arp 299), galaxies: starburst, infrared: galaxies, supernovae: general, supernovae: individual (SN 2005at, SN 2010P)
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-81842DOI: 10.1088/0004-637X/756/2/111ISI: 000309048200007OAI: oai:DiVA.org:su-81842DiVA: diva2:564120
Note

AuthorCount:10;

Available from: 2012-11-01 Created: 2012-11-01 Last updated: 2017-12-07Bibliographically approved

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Melinder, JensÖstlin, Göran
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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