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The First Tidal Dis...
The First Tidal Disruption Flare in ZTF : From Photometric Selection to Multi-wavelength Characterization
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van Velzen, Sjoert (author)
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Gezaril, Suvi (author)
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Cenko, S. Bradley (author)
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Karal, Erin (author)
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Miller-Jones, James C. A. (author)
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Hung, Tiara (author)
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Bright, Joe (author)
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Roth, Nathaniel (author)
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Blagorodnova, Nadejda (author)
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Huppenkothen, Daniela (author)
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Yan, Lin (author)
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Ofek, Eran (author)
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- Sollerman, Jesper (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Frederic, Sara (author)
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Ward, Harlotte (author)
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Grahan, Matthew J. (author)
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Fender, Rob (author)
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Kasliwal, Mansi M. (author)
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Canella, Chris (author)
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Stein, Robert (author)
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Giomi, Matteo (author)
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Brinnel, Valery (author)
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van Santen, Jakob (author)
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Nordin, Jakob (author)
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Bellm, Eric C. (author)
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Dekany, Richard (author)
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Fremling, Christoffer (author)
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Golkhou, V. Zach (author)
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Kupfer, Thomas (author)
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Kulkarni, Shrinivas R. (author)
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Laher, Russ R. (author)
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Mahabal, Ashish (author)
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Masci, Frank J. (author)
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Miller, Adam A. (author)
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Neill, James D. (author)
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Riddle, Reed (author)
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Rigault, Mickael (author)
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Rusholme, Ben (author)
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Soumagnac, Maayane T. (author)
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Tachiba, Yutaro (author)
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(creator_code:org_t)
- 2019-02-25
- 2019
- English.
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In: Astrophysical Journal. - : American Astronomical Society. - 0004-637X .- 1538-4357. ; 872:2
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http://bib-pubdb1.de...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- We present Zwicky Transient Facility (ZTF) observations of the tidal disruption flare AT2018zr/PS18kh reported by Holoien et al. and detected during ZTF commissioning. The ZTF light curve of the tidal disruption event (TDE) samples the rise-to-peak exceptionally well, with 50. days of g- and r-band detections before the time of maximum light. We also present our multi-wavelength follow-up observations, including the detection of a thermal (kT approximate to 100 eV) X-ray source that is two orders of magnitude fainter than the contemporaneous optical/UV blackbody luminosity, and a stringent upper limit to the radio emission. We use observations of 128 known active galactic nuclei (AGNs) to assess the quality of the ZTF astrometry, finding a median host-flare distance of 0.'' 2 for genuine nuclear flares. Using ZTF observations of variability from known AGNs and supernovae we show how these sources can be separated from TDEs. A combination of light-curve shape, color, and location in the host galaxy can be used to select a clean TDE sample from multi-band optical surveys such as ZTF or the Large Synoptic Survey Telescope.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- accretion
- accretion disks
- galaxies: nuclei
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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van Velzen, Sjoe ...
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Gezaril, Suvi
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Cenko, S. Bradle ...
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Karal, Erin
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Miller-Jones, Ja ...
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Hung, Tiara
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show more...
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Bright, Joe
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Roth, Nathaniel
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Blagorodnova, Na ...
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Huppenkothen, Da ...
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Yan, Lin
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Ofek, Eran
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Sollerman, Jespe ...
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Frederic, Sara
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Ward, Harlotte
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Grahan, Matthew ...
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Fender, Rob
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Kasliwal, Mansi ...
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Canella, Chris
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Stein, Robert
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Giomi, Matteo
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Brinnel, Valery
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van Santen, Jako ...
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Nordin, Jakob
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Bellm, Eric C.
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Dekany, Richard
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Fremling, Christ ...
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Golkhou, V. Zach
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Kupfer, Thomas
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Kulkarni, Shrini ...
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Laher, Russ R.
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Mahabal, Ashish
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Masci, Frank J.
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Miller, Adam A.
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Neill, James D.
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Riddle, Reed
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Rigault, Mickael
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Rusholme, Ben
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Soumagnac, Maaya ...
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Tachiba, Yutaro
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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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and Astronomy Astrop ...
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Astrophysical Jo ...
- By the university
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Stockholm University