NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-25 T17:53:59 PDT
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For refcode 2014MNRAS.441.2230H:
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NED Abstract

Copyright by Royal Astronomical Society. 2014MNRAS.441.2230H Environments of interacting transients: impostors and Type IIn supernovae Habergham, S. M.; Anderson, J. P.; James, P. A.; Lyman, J. D. Abstract. This paper presents one of the first environmental analyses of the locations of the class of 'interacting transients', namely Type IIn supernovae (SNe) and SN impostors. We discuss the association of these transients with star formation, host galaxy type, metallicity and the locations of each event within the respective host. Given the frequent assumption of very high mass progenitors for these explosions from various studies, most notably a direct progenitor detection, it is interesting to note the weak association of these subtypes with star formation as traced by Halpha emission, particularly in comparison with Type Ic SNe, which trace the Halpha emission and are thought to arise from high-mass progenitors. The radial distributions of these transients compared to Type Ic SNe are also very different. This provides evidence for the growing hypothesis that these 'interacting transients' are in fact comprised of a variety of progenitor systems. The events contained within this sample are discussed in detail, where information in the literature exists, and compared to the environmental data provided. Impostors are found to split into two main classes, in terms of environment: SN 2008S-like impostors fall on regions of zero Halpha emission, whereas eta Carina-like impostors all fall on regions with positive Halpha emission. We also find indications that the impostor class originate from lower metallicity environments than Type IIn, Ic and IIP SNe. Key words: supernovae: general, supernovae: individual: 1954J, 1961V, 1987B, 1987F, 1993N, 1994W, 1994ak, 1995N, 1996bu, 1996cr, 1997bs, 1997eg, 1999bw, 1999el, 1999gb, 2000P, 2000cl, 2001ac, 2001fa, 2002A, 2002bu, 2002fj, 2002kg, 2003G, 2003dv, 2003gm, 2003lo, 2005db, 2005gl, 2005ip, 2006am, 2006bv, 2006fp, 2008J, 2008S, 2010dn, 2010jl, NGC2366-V1, galaxies: general
Retrieve 77 NED objects in this reference.
Please click here for ADS abstract

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