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PS1-13cbe :
PS1-13cbe : the rapid transition of a Seyfert 2 to a Seyfert 1
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Katebi, Reza (author)
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Chornock, Ryan (author)
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Berger, Edo (author)
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Jones, David O. (author)
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- Lunnan, Ragnhild (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Margutti, Raffaella (author)
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Rest, Armin (author)
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Scolnic, Daniel M. (author)
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Burgett, William S. (author)
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Kaiser, Nick (author)
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Kudritzki, Rolf-Peter (author)
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Magnier, Eugene A. (author)
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Wainscoat, Richard J. (author)
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Waters, Christopher (author)
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(creator_code:org_t)
- 2019-06-05
- 2019
- English.
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In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 487:3, s. 4057-4070
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https://academic.oup...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We present a nuclear transient event, PS1-13cbe, that was first discovered in the Pan-STARRS1 survey in 2013. The outburst occurred in the nucleus of the galaxy SDSS J222153.87+003054.2 at z = 0.123 55, which was classified as a Seyfert 2 in a pre-outburst archival Sloan Digital Sky Survey (SDSS) spectrum. PS1-13cbe showed the appearance of strong broad H alpha and H beta emission lines and a non-stellar continuum in a Magellan spectrum taken 57 d after the peak of the outburst that resembled the characteristics of a Seyfert 1. These broad lines were not present in the SDSS spectrum taken a decade earlier and faded away within 2 yr, as observed in several late-time MDM spectra. We argue that the dramatic appearance and disappearance of the broad lines and a factor of similar to 8 increase in the optical continuum are most likely caused by variability in the pre-existing accretion disc than a tidal disruption event, supernova, or variable obscuration. The time-scale for the turn-on of the optical emission of similar to 70 d observed in this transient is among the shortest observed in a 'changing-look' active galactic nucleus,
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- accretion
- accretion discs
- black hole physics
- galaxies: active
- galaxies: nuclei
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Katebi, Reza
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Chornock, Ryan
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Berger, Edo
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Jones, David O.
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Lunnan, Ragnhild
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Margutti, Raffae ...
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show more...
-
Rest, Armin
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Scolnic, Daniel ...
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Burgett, William ...
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Kaiser, Nick
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Kudritzki, Rolf- ...
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Magnier, Eugene ...
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Wainscoat, Richa ...
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Waters, Christop ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Monthly notices ...
- By the university
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Stockholm University