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Search: onr:"swepub:oai:DiVA.org:su-167517" > 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 ...

  • 2019-02-25
  • American Astronomical Society,2019
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-167517
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-167517URI
  • https://doi.org/10.3847/1538-4357/aafe0cDOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • 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)
  • Cenko, S. Bradley (author)
  • Karal, Erin (author)
  • Miller-Jones, James C. A. (author)
  • Hung, Tiara (author)
  • Bright, Joe (author)
  • Roth, Nathaniel (author)
  • Blagorodnova, Nadejda (author)
  • Huppenkothen, Daniela (author)
  • Yan, Lin (author)
  • Ofek, Eran (author)
  • Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle (author)
  • Frederic, Sara (author)
  • Ward, Harlotte (author)
  • Grahan, Matthew J. (author)
  • Fender, Rob (author)
  • Kasliwal, Mansi M. (author)
  • Canella, Chris (author)
  • Stein, Robert (author)
  • Giomi, Matteo (author)
  • Brinnel, Valery (author)
  • van Santen, Jakob (author)
  • Nordin, Jakob (author)
  • Bellm, Eric C. (author)
  • Dekany, Richard (author)
  • Fremling, Christoffer (author)
  • Golkhou, V. Zach (author)
  • Kupfer, Thomas (author)
  • Kulkarni, Shrinivas R. (author)
  • Laher, Russ R. (author)
  • Mahabal, Ashish (author)
  • Masci, Frank J. (author)
  • Miller, Adam A. (author)
  • Neill, James D. (author)
  • Riddle, Reed (author)
  • Rigault, Mickael (author)
  • Rusholme, Ben (author)
  • Soumagnac, Maayane T. (author)
  • Tachiba, Yutaro (author)
  • Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

Related titles

  • In:Astrophysical Journal: American Astronomical Society872:20004-637X1538-4357

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