THE FIRST SYSTEMATIC STUDY OF TYPE Ibc SUPERNOVA MULTI-BAND LIGHT CURVES

Journal Article · Thu Nov 10 00:00:00 EST 2011 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/741/2/97; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21612766

Drout, Maria R; Soderberg, Alicia M ^[1]; Gal-Yam, Avishay; Arcavi, Iair; Green, Yoav ^[2]; Cenko, S Bradley ^[3]; Fox, Derek B ^[4]; Leonard, Douglas C ^[5]; Sand, David J ^[6]; Moon, Dae-Sik ^[7]

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1. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)
2. Benoziyo Center for Astrophysics, Faculty of Physics, The Weizmann Institute of Science, Rehovot 76100 (Israel)
3. Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States)
4. Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States)
5. Department of Astronomy, San Diego State University, San Diego, CA 92182 (United States)
6. Las Cumbres Observatory Global Telescope Network, Santa Barbara, CA 93117 (United States)
7. Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4 (Canada)

We present detailed optical photometry for 25 Type Ibc supernovae (SNe Ibc) within d Almost-Equal-To 150 Mpc obtained with the robotic Palomar 60 inch telescope in 2004-2007. This study represents the first uniform, systematic, and statistical sample of multi-band SNe Ibc light curves available to date. We correct the light curves for host galaxy extinction using a new technique based on the photometric color evolution, namely, we show that the (V - R) color of extinction-corrected SNe Ibc at {Delta}t Almost-Equal-To 10 days after V-band maximum is tightly distributed, ((V - R){sub V10}) = 0.26 {+-} 0.06 mag. Using this technique, we find that SNe Ibc typically suffer from significant host galaxy extinction, (E(B - V)) Almost-Equal-To 0.4 mag. A comparison of the extinction-corrected light curves for helium-rich (Type Ib) and helium-poor (Type Ic) SNe reveals that they are statistically indistinguishable, both in luminosity and decline rate. We report peak absolute magnitudes of (M{sub R}) = -17.9 {+-} 0.9 mag and (M{sub R}) = -18.3 {+-} 0.6 mag for SNe Ib and Ic, respectively. Focusing on the broad-lined (BL) SNe Ic, we find that they are more luminous than the normal SNe Ibc sample, (M{sub R}) = -19.0 {+-} 1.1 mag, with a probability of only 1.6% that they are drawn from the same population of explosions. By comparing the peak absolute magnitudes of SNe Ic-BL with those inferred for local engine-driven explosions (GRB-SN 1998bw, XRF-SN 2006aj, and SN 2009bb) we find a 25% probability that relativistic SNe are drawn from the overall SNe Ic-BL population. Finally, we fit analytic models to the light curves to derive typical {sup 56}Ni masses of M{sub Ni} Almost-Equal-To 0.2 and 0.5 M{sub Sun} for SNe Ibc and SNe Ic-BL, respectively. With reasonable assumptions for the photospheric velocities, we further extract kinetic energy and ejecta mass values of M{sub ej} Almost-Equal-To 2 M{sub Sun} and E{sub K} Almost-Equal-To 10{sup 51} erg for SNe Ibc, while for SNe Ic-BL we find higher values, M{sub ej} Almost-Equal-To 5 M{sub Sun} and E{sub K} Almost-Equal-To 10{sup 52} erg. We discuss the implications for the progenitors of SNe Ibc and their relation to those of engine-driven explosions.

• OSTI ID: 21612766
• Journal Information: Astrophysical Journal, Vol. 741, Issue 2; Other Information: DOI: 10.1088/0004-637X/741/2/97; Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

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COSMOLOGY AND ASTRONOMY
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COSMIC GAMMA BURSTS
EXPLOSIONS
GALAXIES
HELIUM
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LUMINOSITY
NICKEL 56
PHOTOMETRY
RELATIVISTIC RANGE
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INTERMEDIATE MASS NUCLEI
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NONMETALS
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OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
PRIMARY COSMIC RADIATION
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