Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk: A massive-star explosion in a dwarf host galaxy

Sagi Ben-Ami, Avishay Gal-Yam, Alexei V. Filippenko, Paolo A. Mazzali, Maryam Modjaz, Ofer Yaron, Iair Arcavi, S. Bradley Cenko, Assaf Horesh, D. Andrew Howell, Melissa L. Graham, J. Chuck Horst, Myunshin Im, Yiseul Jeon, Shrinivas R. Kulkarni, Douglas C. Leonard, Daniel Perley, Elena Pian, David J. Sand, Mark SullivanJuliette C. Becker, David Bersier, Joshua S. Bloom, Michael Bottom, Peter J. Brown, Kelsey I. Clubb, Ben Dilday, Richard C. Dixon, Aryeh L. Fortinsky, Derek B. Fox, Luis A. Gonzalez, Avet Harutyunyan, Mansi M. Kasliwal, Weidong Li, Matthew A. Malkan, Ilan Manulis, Thomas Matheson, Nicholas A. Moskovitz, Philip S. Muirhead, Peter E. Nugent, Eran O. Ofek, Robert M. Quimby, Joseph W. Richards, Nathaniel R. Ross, Kinchen J. Searcy, Jeffrey M. Silverman, Nathan Smith, Andrew Vanderburg, Emma S. Walker

    Research output: Contribution to journalArticle

    Abstract

    We present the discovery and extensive early-time observations of the Type Ic supernova (SN) PTF12gzk. Our light curves show a rise of 0.8mag within 2.5hr. Power-law fits (f(t) (t - t 0)n) to these data constrain the explosion date to within one day. We cannot rule out a quadratic fireball model, but higher values of n are possible as well for larger areas in the fit parameter space. Our bolometric light curve and a dense spectral sequence are used to estimate the physical parameters of the exploding star and of the explosion. We show that the photometric evolution of PTF12gzk is slower than that of most SNe Ic. The high ejecta expansion velocities we measure (∼30, 000kms-1 derived from line minima fourdays after explosion) are similar to the observed velocities of broad-lined SNe Ic associated with gamma-ray bursts (GRBs) rather than to normal SN Ic velocities. Yet, this SN does not show the persistent broad lines that are typical of broad-lined SNe Ic. The host-galaxy characteristics are also consistent with GRB-SN hosts, and not with normal SN Ic hosts. By comparison with the spectroscopically similar SN 2004aw, we suggest that the observed properties of PTF12gzk indicate an initial progenitor mass of 25-35M and a large ((5-10) × 10 51erg) kinetic energy, the later being close to the regime of GRB-SN properties.

    Original languageEnglish (US)
    Article numberL33
    JournalAstrophysical Journal Letters
    Volume760
    Issue number2
    DOIs
    StatePublished - Dec 1 2012

    Fingerprint

    A stars
    dwarf galaxies
    massive stars
    supernovae
    explosions
    explosion
    energetics
    wavelength
    wavelengths
    gamma ray bursts
    ejecta
    kinetic energy
    power law
    light curve
    fireballs
    galaxies
    parameter
    stars
    expansion
    estimates

    Keywords

    • supernovae: general
    • supernovae: individual (PTF12gzk)

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk : A massive-star explosion in a dwarf host galaxy. / Ben-Ami, Sagi; Gal-Yam, Avishay; Filippenko, Alexei V.; Mazzali, Paolo A.; Modjaz, Maryam; Yaron, Ofer; Arcavi, Iair; Cenko, S. Bradley; Horesh, Assaf; Howell, D. Andrew; Graham, Melissa L.; Horst, J. Chuck; Im, Myunshin; Jeon, Yiseul; Kulkarni, Shrinivas R.; Leonard, Douglas C.; Perley, Daniel; Pian, Elena; Sand, David J.; Sullivan, Mark; Becker, Juliette C.; Bersier, David; Bloom, Joshua S.; Bottom, Michael; Brown, Peter J.; Clubb, Kelsey I.; Dilday, Ben; Dixon, Richard C.; Fortinsky, Aryeh L.; Fox, Derek B.; Gonzalez, Luis A.; Harutyunyan, Avet; Kasliwal, Mansi M.; Li, Weidong; Malkan, Matthew A.; Manulis, Ilan; Matheson, Thomas; Moskovitz, Nicholas A.; Muirhead, Philip S.; Nugent, Peter E.; Ofek, Eran O.; Quimby, Robert M.; Richards, Joseph W.; Ross, Nathaniel R.; Searcy, Kinchen J.; Silverman, Jeffrey M.; Smith, Nathan; Vanderburg, Andrew; Walker, Emma S.

    In: Astrophysical Journal Letters, Vol. 760, No. 2, L33, 01.12.2012.

    Research output: Contribution to journalArticle

    Ben-Ami, S, Gal-Yam, A, Filippenko, AV, Mazzali, PA, Modjaz, M, Yaron, O, Arcavi, I, Cenko, SB, Horesh, A, Howell, DA, Graham, ML, Horst, JC, Im, M, Jeon, Y, Kulkarni, SR, Leonard, DC, Perley, D, Pian, E, Sand, DJ, Sullivan, M, Becker, JC, Bersier, D, Bloom, JS, Bottom, M, Brown, PJ, Clubb, KI, Dilday, B, Dixon, RC, Fortinsky, AL, Fox, DB, Gonzalez, LA, Harutyunyan, A, Kasliwal, MM, Li, W, Malkan, MA, Manulis, I, Matheson, T, Moskovitz, NA, Muirhead, PS, Nugent, PE, Ofek, EO, Quimby, RM, Richards, JW, Ross, NR, Searcy, KJ, Silverman, JM, Smith, N, Vanderburg, A & Walker, ES 2012, 'Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk: A massive-star explosion in a dwarf host galaxy', Astrophysical Journal Letters, vol. 760, no. 2, L33. https://doi.org/10.1088/2041-8205/760/2/L33
    Ben-Ami, Sagi ; Gal-Yam, Avishay ; Filippenko, Alexei V. ; Mazzali, Paolo A. ; Modjaz, Maryam ; Yaron, Ofer ; Arcavi, Iair ; Cenko, S. Bradley ; Horesh, Assaf ; Howell, D. Andrew ; Graham, Melissa L. ; Horst, J. Chuck ; Im, Myunshin ; Jeon, Yiseul ; Kulkarni, Shrinivas R. ; Leonard, Douglas C. ; Perley, Daniel ; Pian, Elena ; Sand, David J. ; Sullivan, Mark ; Becker, Juliette C. ; Bersier, David ; Bloom, Joshua S. ; Bottom, Michael ; Brown, Peter J. ; Clubb, Kelsey I. ; Dilday, Ben ; Dixon, Richard C. ; Fortinsky, Aryeh L. ; Fox, Derek B. ; Gonzalez, Luis A. ; Harutyunyan, Avet ; Kasliwal, Mansi M. ; Li, Weidong ; Malkan, Matthew A. ; Manulis, Ilan ; Matheson, Thomas ; Moskovitz, Nicholas A. ; Muirhead, Philip S. ; Nugent, Peter E. ; Ofek, Eran O. ; Quimby, Robert M. ; Richards, Joseph W. ; Ross, Nathaniel R. ; Searcy, Kinchen J. ; Silverman, Jeffrey M. ; Smith, Nathan ; Vanderburg, Andrew ; Walker, Emma S. / Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk : A massive-star explosion in a dwarf host galaxy. In: Astrophysical Journal Letters. 2012 ; Vol. 760, No. 2.
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    abstract = "We present the discovery and extensive early-time observations of the Type Ic supernova (SN) PTF12gzk. Our light curves show a rise of 0.8mag within 2.5hr. Power-law fits (f(t) (t - t 0)n) to these data constrain the explosion date to within one day. We cannot rule out a quadratic fireball model, but higher values of n are possible as well for larger areas in the fit parameter space. Our bolometric light curve and a dense spectral sequence are used to estimate the physical parameters of the exploding star and of the explosion. We show that the photometric evolution of PTF12gzk is slower than that of most SNe Ic. The high ejecta expansion velocities we measure (∼30, 000kms-1 derived from line minima fourdays after explosion) are similar to the observed velocities of broad-lined SNe Ic associated with gamma-ray bursts (GRBs) rather than to normal SN Ic velocities. Yet, this SN does not show the persistent broad lines that are typical of broad-lined SNe Ic. The host-galaxy characteristics are also consistent with GRB-SN hosts, and not with normal SN Ic hosts. By comparison with the spectroscopically similar SN 2004aw, we suggest that the observed properties of PTF12gzk indicate an initial progenitor mass of 25-35M ⊙ and a large ((5-10) × 10 51erg) kinetic energy, the later being close to the regime of GRB-SN properties.",
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    T1 - Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk

    T2 - A massive-star explosion in a dwarf host galaxy

    AU - Ben-Ami, Sagi

    AU - Gal-Yam, Avishay

    AU - Filippenko, Alexei V.

    AU - Mazzali, Paolo A.

    AU - Modjaz, Maryam

    AU - Yaron, Ofer

    AU - Arcavi, Iair

    AU - Cenko, S. Bradley

    AU - Horesh, Assaf

    AU - Howell, D. Andrew

    AU - Graham, Melissa L.

    AU - Horst, J. Chuck

    AU - Im, Myunshin

    AU - Jeon, Yiseul

    AU - Kulkarni, Shrinivas R.

    AU - Leonard, Douglas C.

    AU - Perley, Daniel

    AU - Pian, Elena

    AU - Sand, David J.

    AU - Sullivan, Mark

    AU - Becker, Juliette C.

    AU - Bersier, David

    AU - Bloom, Joshua S.

    AU - Bottom, Michael

    AU - Brown, Peter J.

    AU - Clubb, Kelsey I.

    AU - Dilday, Ben

    AU - Dixon, Richard C.

    AU - Fortinsky, Aryeh L.

    AU - Fox, Derek B.

    AU - Gonzalez, Luis A.

    AU - Harutyunyan, Avet

    AU - Kasliwal, Mansi M.

    AU - Li, Weidong

    AU - Malkan, Matthew A.

    AU - Manulis, Ilan

    AU - Matheson, Thomas

    AU - Moskovitz, Nicholas A.

    AU - Muirhead, Philip S.

    AU - Nugent, Peter E.

    AU - Ofek, Eran O.

    AU - Quimby, Robert M.

    AU - Richards, Joseph W.

    AU - Ross, Nathaniel R.

    AU - Searcy, Kinchen J.

    AU - Silverman, Jeffrey M.

    AU - Smith, Nathan

    AU - Vanderburg, Andrew

    AU - Walker, Emma S.

    PY - 2012/12/1

    Y1 - 2012/12/1

    N2 - We present the discovery and extensive early-time observations of the Type Ic supernova (SN) PTF12gzk. Our light curves show a rise of 0.8mag within 2.5hr. Power-law fits (f(t) (t - t 0)n) to these data constrain the explosion date to within one day. We cannot rule out a quadratic fireball model, but higher values of n are possible as well for larger areas in the fit parameter space. Our bolometric light curve and a dense spectral sequence are used to estimate the physical parameters of the exploding star and of the explosion. We show that the photometric evolution of PTF12gzk is slower than that of most SNe Ic. The high ejecta expansion velocities we measure (∼30, 000kms-1 derived from line minima fourdays after explosion) are similar to the observed velocities of broad-lined SNe Ic associated with gamma-ray bursts (GRBs) rather than to normal SN Ic velocities. Yet, this SN does not show the persistent broad lines that are typical of broad-lined SNe Ic. The host-galaxy characteristics are also consistent with GRB-SN hosts, and not with normal SN Ic hosts. By comparison with the spectroscopically similar SN 2004aw, we suggest that the observed properties of PTF12gzk indicate an initial progenitor mass of 25-35M ⊙ and a large ((5-10) × 10 51erg) kinetic energy, the later being close to the regime of GRB-SN properties.

    AB - We present the discovery and extensive early-time observations of the Type Ic supernova (SN) PTF12gzk. Our light curves show a rise of 0.8mag within 2.5hr. Power-law fits (f(t) (t - t 0)n) to these data constrain the explosion date to within one day. We cannot rule out a quadratic fireball model, but higher values of n are possible as well for larger areas in the fit parameter space. Our bolometric light curve and a dense spectral sequence are used to estimate the physical parameters of the exploding star and of the explosion. We show that the photometric evolution of PTF12gzk is slower than that of most SNe Ic. The high ejecta expansion velocities we measure (∼30, 000kms-1 derived from line minima fourdays after explosion) are similar to the observed velocities of broad-lined SNe Ic associated with gamma-ray bursts (GRBs) rather than to normal SN Ic velocities. Yet, this SN does not show the persistent broad lines that are typical of broad-lined SNe Ic. The host-galaxy characteristics are also consistent with GRB-SN hosts, and not with normal SN Ic hosts. By comparison with the spectroscopically similar SN 2004aw, we suggest that the observed properties of PTF12gzk indicate an initial progenitor mass of 25-35M ⊙ and a large ((5-10) × 10 51erg) kinetic energy, the later being close to the regime of GRB-SN properties.

    KW - supernovae: general

    KW - supernovae: individual (PTF12gzk)

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