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The First Tidal Dis...
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van Velzen, Sjoert
(author)
The First Tidal Disruption Flare in ZTF : From Photometric Selection to Multi-wavelength Characterization
- Article/chapterEnglish2019
Publisher, publication year, extent ...
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2019-02-25
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American Astronomical Society,2019
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Numbers
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LIBRIS-ID:oai:DiVA.org:su-167517
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-167517URI
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https://doi.org/10.3847/1538-4357/aafe0cDOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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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.
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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, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle
(author)
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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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Stockholms universitetInstitutionen för astronomi
(creator_code:org_t)
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In:Astrophysical Journal: American Astronomical Society872:20004-637X1538-4357
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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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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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Stockholm University