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Yao, Yuhan; Miller, Adam A.; Kulkarni, S. R.; Bulla, Mattia; Masci, Frank J.; Goldstein, Daniel A.; Goobar, Ariel; Nugent, Peter; Dugas, Alison; Blagorodnova, Nadia; Neill, James D.; Rigault, Mickael; Sollerman, Jesper; Nordin, J.; Bellm, Eric C.; Cenko, S. Bradley; De, Kishalay; Dhawan, Suhail; Feindt, Ulrich; Fremling, C.; Gatkine, Pradip; Graham, Matthew J.; Graham, Melissa L.; Ho, Anna Y. Q.; [...]

ZTF Early Observations of Type Ia Supernovae. I. Properties of the 2018 Sample

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  • Medientyp: E-Artikel
  • Titel: ZTF Early Observations of Type Ia Supernovae. I. Properties of the 2018 Sample
  • Beteiligte: Yao, Yuhan; Miller, Adam A.; Kulkarni, S. R.; Bulla, Mattia; Masci, Frank J.; Goldstein, Daniel A.; Goobar, Ariel; Nugent, Peter; Dugas, Alison; Blagorodnova, Nadia; Neill, James D.; Rigault, Mickael; Sollerman, Jesper; Nordin, J.; Bellm, Eric C.; Cenko, S. Bradley; De, Kishalay; Dhawan, Suhail; Feindt, Ulrich; Fremling, C.; Gatkine, Pradip; Graham, Matthew J.; Graham, Melissa L.; Ho, Anna Y. Q.; [...]
  • Erschienen: American Astronomical Society, 2019
  • Erschienen in: The Astrophysical Journal
  • Sprache: Nicht zu entscheiden
  • DOI: 10.3847/1538-4357/ab4cf5
  • ISSN: 0004-637X; 1538-4357
  • Schlagwörter: Space and Planetary Science ; Astronomy and Astrophysics
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Abstract</jats:title> <jats:p>Early-time observations of Type Ia supernovae (SNe Ia) are essential to constrain the properties of their progenitors. In this paper, we present high-quality light curves of 127 SNe Ia discovered by the Zwicky Transient Facility (ZTF) in 2018. We describe our method to perform forced point-spread function photometry, which can be applied to other types of extragalactic transients. With a planned cadence of six observations per night (three <jats:italic>g</jats:italic> + three <jats:italic>r</jats:italic>), all of the 127 SNe Ia are detected in both <jats:italic>g</jats:italic> and <jats:italic>r</jats:italic> bands more than 10 days (in the rest frame) prior to the epoch of <jats:italic>g</jats:italic>-band maximum light. The redshifts of these objects range from <jats:italic>z</jats:italic> = 0.0181 to 0.165; the median redshift is 0.074. Among the 127 SNe, 50 are detected at least 14 days prior to maximum light (in the rest frame), with a subset of nine objects being detected more than 17 days before <jats:italic>g</jats:italic>-band peak. This is the largest sample of young SNe Ia collected to date; it can be used to study the shape and color evolution of the rising light curves in unprecedented detail. We discuss six peculiar events in this sample: one 02cx-like event ZTF18abclfee (SN 2018crl), one Ia-CSM SN ZTF18aaykjei (SN 2018cxk), and four objects with possible super-Chandrasekhar mass progenitors: ZTF18abhpgje (SN 2018eul), ZTF18abdpvnd (SN 2018dvf), ZTF18aawpcel (SN 2018cir), and ZTF18abddmrf (SN 2018dsx).</jats:p>
  • Zugangsstatus: Freier Zugang