The Berkeley sample of stripped-envelope supernovae

Isaac Shivvers; Alexei V. Filippenko; Jeffrey M. Silverman; Wei Kang Zheng; Ryan J. Foley; Ryan Chornock; Aaron J. Barth; S. Bradley Cenko; Kelsey I. Clubb; Ori D. Fox; Mohan Ganeshalingam; Melissa L. Graham; Patrick L. Kelly; Io K.W. Kleiser; Douglas C. Leonard; Weidong Li; Thomas Matheson; Jon C. Mauerhan; Maryam Modjaz; Franklin J.D. Serduke; Joseph C. Shields; Thea N. Steele; Brandon J. Swift; Diane S. Wong; Heechan Yuk

doi:10.1093/mnras/sty2719

The Berkeley sample of stripped-envelope supernovae

Isaac Shivvers, Alexei V. Filippenko, Jeffrey M. Silverman, Wei Kang Zheng, Ryan J. Foley, Ryan Chornock, Aaron J. Barth, S. Bradley Cenko, Kelsey I. Clubb, Ori D. Fox, Mohan Ganeshalingam, Melissa L. Graham, Patrick L. Kelly, Io K.W. Kleiser, Douglas C. Leonard, Weidong Li, Thomas Matheson, Jon C. Mauerhan, Maryam Modjaz, Franklin J.D. SerdukeJoseph C. Shields, Thea N. Steele, Brandon J. Swift, Diane S. Wong, Heechan Yuk

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

56 Scopus citations

Abstract

We present the complete sample of stripped-envelope supernova (SN) spectra observed by the Lick Observatory Supernova Search (LOSS) collaboration over the last three decades: 888 spectra of 302 SNe, 652 published here for the first time, with 384 spectra (of 92 SNe) having photometrically determined phases. After correcting for redshift and Milky Way dust reddening and reevaluating the spectroscopic classifications for each SN, we construct mean spectra of the three major spectral subtypes (Types IIb, Ib, and Ic) binned by phase.We compare measures of line strengths and widths made from this sample to the results of previous efforts, confirming that OI λ7774 absorption is stronger and found at higher velocity in Type Ic SNe than in Types Ib or IIb SNe in the first ~30 days after peak brightness, though the widths of nebular emission lines are consistent across subtypes. We also highlight newly available observations for a few rare subpopulations of interest.

Original language	English (US)
Pages (from-to)	1545-1556
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	482
Issue number	2
DOIs	https://doi.org/10.1093/mnras/sty2719
State	Published - Jan 11 2019

Bibliographical note

Publisher Copyright:
© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.

Keywords

Astronomical data bases: miscellaneous
Stars: massive
Supernovae: general
Techniques: spectroscopic

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Shivvers, I., Filippenko, A. V., Silverman, J. M., Zheng, W. K., Foley, R. J., Chornock, R., Barth, A. J., Cenko, S. B., Clubb, K. I., Fox, O. D., Ganeshalingam, M., Graham, M. L., Kelly, P. L., Kleiser, I. K. W., Leonard, D. C., Li, W., Matheson, T., Mauerhan, J. C., Modjaz, M., ... Yuk, H. (2019). The Berkeley sample of stripped-envelope supernovae. Monthly Notices of the Royal Astronomical Society, 482(2), 1545-1556. https://doi.org/10.1093/mnras/sty2719

Shivvers, I, Filippenko, AV, Silverman, JM, Zheng, WK, Foley, RJ, Chornock, R, Barth, AJ, Cenko, SB, Clubb, KI, Fox, OD, Ganeshalingam, M, Graham, ML, Kelly, PL, Kleiser, IKW, Leonard, DC, Li, W, Matheson, T, Mauerhan, JC, Modjaz, M, Serduke, FJD, Shields, JC, Steele, TN, Swift, BJ, Wong, DS & Yuk, H 2019, 'The Berkeley sample of stripped-envelope supernovae', Monthly Notices of the Royal Astronomical Society, vol. 482, no. 2, pp. 1545-1556. https://doi.org/10.1093/mnras/sty2719

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abstract = "We present the complete sample of stripped-envelope supernova (SN) spectra observed by the Lick Observatory Supernova Search (LOSS) collaboration over the last three decades: 888 spectra of 302 SNe, 652 published here for the first time, with 384 spectra (of 92 SNe) having photometrically determined phases. After correcting for redshift and Milky Way dust reddening and reevaluating the spectroscopic classifications for each SN, we construct mean spectra of the three major spectral subtypes (Types IIb, Ib, and Ic) binned by phase.We compare measures of line strengths and widths made from this sample to the results of previous efforts, confirming that OI λ7774 absorption is stronger and found at higher velocity in Type Ic SNe than in Types Ib or IIb SNe in the first ~30 days after peak brightness, though the widths of nebular emission lines are consistent across subtypes. We also highlight newly available observations for a few rare subpopulations of interest.",

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AU - Shivvers, Isaac

AU - Filippenko, Alexei V.

AU - Silverman, Jeffrey M.

AU - Zheng, Wei Kang

AU - Foley, Ryan J.

AU - Chornock, Ryan

AU - Barth, Aaron J.

AU - Cenko, S. Bradley

AU - Clubb, Kelsey I.

AU - Fox, Ori D.

AU - Ganeshalingam, Mohan

AU - Graham, Melissa L.

AU - Kelly, Patrick L.

AU - Kleiser, Io K.W.

AU - Leonard, Douglas C.

AU - Li, Weidong

AU - Matheson, Thomas

AU - Mauerhan, Jon C.

AU - Modjaz, Maryam

AU - Serduke, Franklin J.D.

AU - Shields, Joseph C.

AU - Steele, Thea N.

AU - Swift, Brandon J.

AU - Wong, Diane S.

AU - Yuk, Heechan

PY - 2019/1/11

Y1 - 2019/1/11

N2 - We present the complete sample of stripped-envelope supernova (SN) spectra observed by the Lick Observatory Supernova Search (LOSS) collaboration over the last three decades: 888 spectra of 302 SNe, 652 published here for the first time, with 384 spectra (of 92 SNe) having photometrically determined phases. After correcting for redshift and Milky Way dust reddening and reevaluating the spectroscopic classifications for each SN, we construct mean spectra of the three major spectral subtypes (Types IIb, Ib, and Ic) binned by phase.We compare measures of line strengths and widths made from this sample to the results of previous efforts, confirming that OI λ7774 absorption is stronger and found at higher velocity in Type Ic SNe than in Types Ib or IIb SNe in the first ~30 days after peak brightness, though the widths of nebular emission lines are consistent across subtypes. We also highlight newly available observations for a few rare subpopulations of interest.

AB - We present the complete sample of stripped-envelope supernova (SN) spectra observed by the Lick Observatory Supernova Search (LOSS) collaboration over the last three decades: 888 spectra of 302 SNe, 652 published here for the first time, with 384 spectra (of 92 SNe) having photometrically determined phases. After correcting for redshift and Milky Way dust reddening and reevaluating the spectroscopic classifications for each SN, we construct mean spectra of the three major spectral subtypes (Types IIb, Ib, and Ic) binned by phase.We compare measures of line strengths and widths made from this sample to the results of previous efforts, confirming that OI λ7774 absorption is stronger and found at higher velocity in Type Ic SNe than in Types Ib or IIb SNe in the first ~30 days after peak brightness, though the widths of nebular emission lines are consistent across subtypes. We also highlight newly available observations for a few rare subpopulations of interest.

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The Berkeley sample of stripped-envelope supernovae

Abstract

Bibliographical note

Keywords

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