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THE HYDROGEN-POOR S...
THE HYDROGEN-POOR SUPERLUMINOUS SUPERNOVA iPTF 13ajg AND ITS HOST GALAXY IN ABSORPTION AND EMISSION
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Vreeswijk, Paul M. (author)
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Savaglio, Sandra (author)
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Gal-Yam, Avishay (author)
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De Cia, Annalisa (author)
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Quimby, Robert M. (author)
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Sullivan, Mark (author)
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Cenko, S. Bradley (author)
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Perley, Daniel A. (author)
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Filippenko, Alexei V. (author)
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Clubb, Kelsey I. (author)
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- Taddia, Francesco (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Leloudas, Giorgos (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),University of Copenhagen, Denmark
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Arcavi, Iair (author)
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Rubin, Adam (author)
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Kasliwal, Mansi M. (author)
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Cao, Yi (author)
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Yaron, Ofer (author)
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Tal, David (author)
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Ofek, Eran O. (author)
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Capone, John (author)
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Kutyrev, Alexander S. (author)
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Toy, Vicki (author)
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Nugent, Peter E. (author)
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Laher, Russ (author)
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Surace, Jason (author)
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Kulkarni, Shrinivas R. (author)
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(creator_code:org_t)
- 2014
- 2014
- English.
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In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 797:1, s. 24-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We present imaging and spectroscopy of a hydrogen-poor superluminous supernova (SLSN) discovered by the intermediate Palomar Transient Factory, iPTF 13ajg. At a redshift of z = 0.7403, derived from narrow absorption lines, iPTF 13ajg peaked at an absolute magnitude of M-u,M-AB = -22.5, one of the most luminous supernovae to date. The observed bolometric peak luminosity of iPTF 13ajg is 3.2 x 10(44) erg s(-1), while the estimated total radiated energy is 1.3 x 10(51) erg. We detect narrow absorption lines of Mg I, Mg II, and Fe II, associated with the cold interstellar medium in the host galaxy, at two different epochs with X-shooter at the Very Large Telescope. From Voigt profile fitting, we derive the column densities log N(Mg I) = 11.94 +/- 0.06, log N(Mg II) = 14.7 +/- 0.3, and log N(Fe II) = 14.25 +/- 0.10. These column densities, as well as the Mg I and Mg II equivalent widths of a sample of hydrogen-poor SLSNe taken from the literature, are at the low end of those derived for gamma-ray bursts (GRBs) whose progenitors are also thought to be massive stars. This suggests that the environments of hydrogen-poor SLSNe and GRBs are different. From the nondetection of Fe II fine-structure absorption lines, we derive a lower limit on the distance between the supernova and the narrow-line absorbing gas of 50 pc. The neutral gas responsible for the absorption in iPTF 13ajg exhibits a single narrow component with a low velocity width, Delta V = 76 km s(-1), indicating a low-mass host galaxy. No host galaxy emission lines are detected, leading to an upper limit on the unobscured star formation rate (SFR) of SFR[O II] < 0.07 M-circle dot yr(-1). Late-time imaging shows the iPTF 13ajg host galaxy to be faint, with g(AB) approximate to 27.0 and R-AB >= 26.0 mag, corresponding to M-B,M-Vega greater than or similar to -17.7 mag.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- ISM: atoms
- supernovae: general
- supernovae: individual (iPTF 13ajg)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Vreeswijk, Paul ...
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Savaglio, Sandra
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Gal-Yam, Avishay
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De Cia, Annalisa
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Quimby, Robert M ...
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Sullivan, Mark
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show more...
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Cenko, S. Bradle ...
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Perley, Daniel A ...
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Filippenko, Alex ...
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Clubb, Kelsey I.
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Taddia, Francesc ...
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Sollerman, Jespe ...
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Leloudas, Giorgo ...
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Arcavi, Iair
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Rubin, Adam
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Kasliwal, Mansi ...
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Cao, Yi
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Yaron, Ofer
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Tal, David
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Ofek, Eran O.
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Capone, John
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Kutyrev, Alexand ...
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Toy, Vicki
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Nugent, Peter E.
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Laher, Russ
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Surace, Jason
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Kulkarni, Shrini ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Astronomy Astrop ...
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Astrophysical Jo ...
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Stockholm University