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

Yuhan Yao; Adam A. Miller; S. R. Kulkarni; Mattia Bulla; Frank J. Masci; Daniel A. Goldstein; Ariel Goobar; Peter Nugent; Alison Dugas; Nadia Blagorodnova; James D. Neill; Mickael Rigault; Jesper Sollerman; J. Nordin; Eric C. Bellm; S. Bradley Cenko; Kishalay De; Suhail Dhawan; Ulrich Feindt; C. Fremling; Pradip Gatkine; Matthew J. Graham; Melissa L. Graham; Anna Y.Q. Ho; T. Hung; Mansi M. Kasliwal; Thomas Kupfer; Russ R. Laher; Daniel A. Perley; Ben Rusholme; David L. Shupe; Maayane T. Soumagnac; K. Taggart; Richard Walters; Lin Yan

doi:10.3847/1538-4357/ab4cf5

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

Yuhan Yao, Adam A. Miller, S. R. Kulkarni, Mattia Bulla, Frank J. Masci, Daniel A. Goldstein, Ariel Goobar, Peter Nugent, Alison Dugas, Nadia Blagorodnova, James D. Neill, Mickael Rigault, Jesper Sollerman, J. Nordin, Eric C. Bellm, S. Bradley Cenko, Kishalay De, Suhail Dhawan, Ulrich Feindt, C. FremlingPradip Gatkine, Matthew J. Graham, Melissa L. Graham, Anna Y.Q. Ho, T. Hung, Mansi M. Kasliwal, Thomas Kupfer, Russ R. Laher, Daniel A. Perley, Ben Rusholme, David L. Shupe, Maayane T. Soumagnac, K. Taggart, Richard Walters, Lin Yan

Physics and Astronomy

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Abstract

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 g + three r), all of the 127 SNe Ia are detected in both g and r bands more than 10 days (in the rest frame) prior to the epoch of g-band maximum light. The redshifts of these objects range from z = 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 g-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).

Original language	English (US)
Article number	152
Journal	Astrophysical Journal
Volume	886
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ab4cf5
State	Published - Dec 1 2019

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/ab4cf5

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Yao, Y., Miller, A. A., Kulkarni, S. R., Bulla, M., Masci, F. J., Goldstein, D. A., Goobar, A., Nugent, P., Dugas, A., Blagorodnova, N., Neill, J. D., Rigault, M., Sollerman, J., Nordin, J., Bellm, E. C., Cenko, S. B., De, K., Dhawan, S., Feindt, U., ... Yan, L. (2019). ZTF Early Observations of Type Ia Supernovae. I. Properties of the 2018 Sample. Astrophysical Journal, 886(2), Article 152. https://doi.org/10.3847/1538-4357/ab4cf5

@article{a316e143959a423885803787e96e7c42,

title = "ZTF Early Observations of Type Ia Supernovae. I. Properties of the 2018 Sample",

abstract = "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 g + three r), all of the 127 SNe Ia are detected in both g and r bands more than 10 days (in the rest frame) prior to the epoch of g-band maximum light. The redshifts of these objects range from z = 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 g-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).",

author = "Yuhan Yao and Miller, {Adam A.} and Kulkarni, {S. R.} and Mattia Bulla and Masci, {Frank J.} and Goldstein, {Daniel A.} and Ariel Goobar and Peter Nugent and Alison Dugas and Nadia Blagorodnova and Neill, {James D.} and Mickael Rigault and Jesper Sollerman and J. Nordin and Bellm, {Eric C.} and Cenko, {S. Bradley} and Kishalay De and Suhail Dhawan and Ulrich Feindt and C. Fremling and Pradip Gatkine and Graham, {Matthew J.} and Graham, {Melissa L.} and Ho, {Anna Y.Q.} and T. Hung and Kasliwal, {Mansi M.} and Thomas Kupfer and Laher, {Russ R.} and Perley, {Daniel A.} and Ben Rusholme and Shupe, {David L.} and Soumagnac, {Maayane T.} and K. Taggart and Richard Walters and Lin Yan",

year = "2019",

month = dec,

day = "1",

doi = "10.3847/1538-4357/ab4cf5",

language = "English (US)",

volume = "886",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "2",

}

Yao, Y, Miller, AA, Kulkarni, SR, Bulla, M, Masci, FJ, Goldstein, DA, Goobar, A, Nugent, P, Dugas, A, Blagorodnova, N, Neill, JD, Rigault, M, Sollerman, J, Nordin, J, Bellm, EC, Cenko, SB, De, K, Dhawan, S, Feindt, U, Fremling, C, Gatkine, P, Graham, MJ, Graham, ML, Ho, AYQ, Hung, T, Kasliwal, MM, Kupfer, T, Laher, RR, Perley, DA, Rusholme, B, Shupe, DL, Soumagnac, MT, Taggart, K, Walters, R & Yan, L 2019, 'ZTF Early Observations of Type Ia Supernovae. I. Properties of the 2018 Sample', Astrophysical Journal, vol. 886, no. 2, 152. https://doi.org/10.3847/1538-4357/ab4cf5

TY - JOUR

T1 - ZTF Early Observations of Type Ia Supernovae. I. Properties of the 2018 Sample

AU - Yao, Yuhan

AU - Miller, Adam A.

AU - Kulkarni, S. R.

AU - Bulla, Mattia

AU - Masci, Frank J.

AU - Goldstein, Daniel A.

AU - Goobar, Ariel

AU - Nugent, Peter

AU - Dugas, Alison

AU - Blagorodnova, Nadia

AU - Neill, James D.

AU - Rigault, Mickael

AU - Sollerman, Jesper

AU - Nordin, J.

AU - Bellm, Eric C.

AU - Cenko, S. Bradley

AU - De, Kishalay

AU - Dhawan, Suhail

AU - Feindt, Ulrich

AU - Fremling, C.

AU - Gatkine, Pradip

AU - Graham, Matthew J.

AU - Graham, Melissa L.

AU - Ho, Anna Y.Q.

AU - Hung, T.

AU - Kasliwal, Mansi M.

AU - Kupfer, Thomas

AU - Laher, Russ R.

AU - Perley, Daniel A.

AU - Rusholme, Ben

AU - Shupe, David L.

AU - Soumagnac, Maayane T.

AU - Taggart, K.

AU - Walters, Richard

AU - Yan, Lin

PY - 2019/12/1

Y1 - 2019/12/1

N2 - 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 g + three r), all of the 127 SNe Ia are detected in both g and r bands more than 10 days (in the rest frame) prior to the epoch of g-band maximum light. The redshifts of these objects range from z = 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 g-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).

AB - 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 g + three r), all of the 127 SNe Ia are detected in both g and r bands more than 10 days (in the rest frame) prior to the epoch of g-band maximum light. The redshifts of these objects range from z = 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 g-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).

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UR - http://www.scopus.com/inward/citedby.url?scp=85077292862&partnerID=8YFLogxK

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DO - 10.3847/1538-4357/ab4cf5

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VL - 886

JO - Astrophysical Journal

JF - Astrophysical Journal

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ER -

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

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