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Slow-speed supernovae from the Palomar transient factory: two channels

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Slow-speed supernovae from the Palomar transient factory: two channels. / White, Christopher J.; Kasliwal, Mansi M.; Nugent, Peter E. et al.
In: The Astrophysical Journal, Vol. 799, No. 1, 52, 20.01.2015.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

White, CJ, Kasliwal, MM, Nugent, PE, Gal-Yam, A, Howell, DA, Sullivan, M, Goobar, A, Piro, AL, Bloom, JS, Kulkarni, SR, Laher, RR, Masci, F, Ofek, EO, Surace, J, Ben-Ami, S, Cao, Y, Cenko, SB, Hook, IM, Jonsson, J, Matheson, T, Sternberg, A, Quimby, RM & Yaron, O 2015, 'Slow-speed supernovae from the Palomar transient factory: two channels', The Astrophysical Journal, vol. 799, no. 1, 52. https://doi.org/10.1088/0004-637X/799/1/52

APA

White, C. J., Kasliwal, M. M., Nugent, P. E., Gal-Yam, A., Howell, D. A., Sullivan, M., Goobar, A., Piro, A. L., Bloom, J. S., Kulkarni, S. R., Laher, R. R., Masci, F., Ofek, E. O., Surace, J., Ben-Ami, S., Cao, Y., Cenko, S. B., Hook, I. M., Jonsson, J., ... Yaron, O. (2015). Slow-speed supernovae from the Palomar transient factory: two channels. The Astrophysical Journal, 799(1), Article 52. https://doi.org/10.1088/0004-637X/799/1/52

Vancouver

White CJ, Kasliwal MM, Nugent PE, Gal-Yam A, Howell DA, Sullivan M et al. Slow-speed supernovae from the Palomar transient factory: two channels. The Astrophysical Journal. 2015 Jan 20;799(1):52. doi: 10.1088/0004-637X/799/1/52

Author

White, Christopher J. ; Kasliwal, Mansi M. ; Nugent, Peter E. et al. / Slow-speed supernovae from the Palomar transient factory : two channels. In: The Astrophysical Journal. 2015 ; Vol. 799, No. 1.

Bibtex

@article{17824c184d9943a2b308df56b25d598a,
title = "Slow-speed supernovae from the Palomar transient factory: two channels",
abstract = "Since the discovery of the unusual prototype SN 2002cx, the eponymous class of Type I (hydrogen-poor) supernovae with low ejecta speeds has grown to include approximately two dozen members identified from several heterogeneous surveys, in some cases ambiguously. Here we present the results of a systematic study of 1077 Type I supernovae discovered by the Palomar Transient Factory, leading to nine new members of this peculiar class. Moreover, we find there are two distinct subclasses based on their spectroscopic, photometric, and host galaxy properties: {"}SN 2002cx-like{"} supernovae tend to be in later-type or more irregular hosts, have more varied and generally dimmer luminosities, have longer rise times, and lack a Ti II trough when compared to {"}SN 2002es-like{"} supernovae. None of our objects show helium, and we counter a previous claim of two such events. We also find that the occurrence rate of these transients relative to Type Ia supernovae is 5.6(-3.8)(+22) % (90% confidence), lower compared to earlier estimates. Combining our objects with the literature sample, we propose that these subclasses have two distinct physical origins.",
keywords = "supernovae: general, supernovae: individual (iPTF 13an, PTF 09ego, PTF 09eiy, PTF 09eoi, PTF 10xk, PTF 10bvr, PTF 10ujn, PTF 10acdh, PTF 11hyh, SN 2002cx, SN 2002es), surveys, techniques: spectroscopic, MASS WHITE-DWARFS, IA SUPERNOVAE, LIGHT CURVES, DETONATION SUPERNOVAE, LOW-LUMINOSITY, II SUPERNOVAE, REDSHIFT DATA, LOW-VELOCITY, SN 2008HA, GALAXIES",
author = "White, {Christopher J.} and Kasliwal, {Mansi M.} and Nugent, {Peter E.} and Avishay Gal-Yam and Howell, {D. Andrew} and Mark Sullivan and Ariel Goobar and Piro, {Anthony L.} and Bloom, {Joshua S.} and Kulkarni, {Shrinivas R.} and Laher, {Russ R.} and Frank Masci and Ofek, {Eran O.} and Jason Surace and Sagi Ben-Ami and Yi Cao and Cenko, {S. Bradley} and Hook, {Isobel M.} and Jakob Jonsson and Thomas Matheson and Assaf Sternberg and Quimby, {Robert M.} and Ofer Yaron",
year = "2015",
month = jan,
day = "20",
doi = "10.1088/0004-637X/799/1/52",
language = "English",
volume = "799",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "1",

}

RIS

TY - JOUR

T1 - Slow-speed supernovae from the Palomar transient factory

T2 - two channels

AU - White, Christopher J.

AU - Kasliwal, Mansi M.

AU - Nugent, Peter E.

AU - Gal-Yam, Avishay

AU - Howell, D. Andrew

AU - Sullivan, Mark

AU - Goobar, Ariel

AU - Piro, Anthony L.

AU - Bloom, Joshua S.

AU - Kulkarni, Shrinivas R.

AU - Laher, Russ R.

AU - Masci, Frank

AU - Ofek, Eran O.

AU - Surace, Jason

AU - Ben-Ami, Sagi

AU - Cao, Yi

AU - Cenko, S. Bradley

AU - Hook, Isobel M.

AU - Jonsson, Jakob

AU - Matheson, Thomas

AU - Sternberg, Assaf

AU - Quimby, Robert M.

AU - Yaron, Ofer

PY - 2015/1/20

Y1 - 2015/1/20

N2 - Since the discovery of the unusual prototype SN 2002cx, the eponymous class of Type I (hydrogen-poor) supernovae with low ejecta speeds has grown to include approximately two dozen members identified from several heterogeneous surveys, in some cases ambiguously. Here we present the results of a systematic study of 1077 Type I supernovae discovered by the Palomar Transient Factory, leading to nine new members of this peculiar class. Moreover, we find there are two distinct subclasses based on their spectroscopic, photometric, and host galaxy properties: "SN 2002cx-like" supernovae tend to be in later-type or more irregular hosts, have more varied and generally dimmer luminosities, have longer rise times, and lack a Ti II trough when compared to "SN 2002es-like" supernovae. None of our objects show helium, and we counter a previous claim of two such events. We also find that the occurrence rate of these transients relative to Type Ia supernovae is 5.6(-3.8)(+22) % (90% confidence), lower compared to earlier estimates. Combining our objects with the literature sample, we propose that these subclasses have two distinct physical origins.

AB - Since the discovery of the unusual prototype SN 2002cx, the eponymous class of Type I (hydrogen-poor) supernovae with low ejecta speeds has grown to include approximately two dozen members identified from several heterogeneous surveys, in some cases ambiguously. Here we present the results of a systematic study of 1077 Type I supernovae discovered by the Palomar Transient Factory, leading to nine new members of this peculiar class. Moreover, we find there are two distinct subclasses based on their spectroscopic, photometric, and host galaxy properties: "SN 2002cx-like" supernovae tend to be in later-type or more irregular hosts, have more varied and generally dimmer luminosities, have longer rise times, and lack a Ti II trough when compared to "SN 2002es-like" supernovae. None of our objects show helium, and we counter a previous claim of two such events. We also find that the occurrence rate of these transients relative to Type Ia supernovae is 5.6(-3.8)(+22) % (90% confidence), lower compared to earlier estimates. Combining our objects with the literature sample, we propose that these subclasses have two distinct physical origins.

KW - supernovae: general

KW - supernovae: individual (iPTF 13an, PTF 09ego, PTF 09eiy, PTF 09eoi, PTF 10xk, PTF 10bvr, PTF 10ujn, PTF 10acdh, PTF 11hyh

KW - SN 2002cx, SN 2002es)

KW - surveys

KW - techniques: spectroscopic

KW - MASS WHITE-DWARFS

KW - IA SUPERNOVAE

KW - LIGHT CURVES

KW - DETONATION SUPERNOVAE

KW - LOW-LUMINOSITY

KW - II SUPERNOVAE

KW - REDSHIFT DATA

KW - LOW-VELOCITY

KW - SN 2008HA

KW - GALAXIES

U2 - 10.1088/0004-637X/799/1/52

DO - 10.1088/0004-637X/799/1/52

M3 - Journal article

VL - 799

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 52

ER -