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Ps1-10bzj: A Fast, Hydrogen-Poor Superluminous Supernova in a Metal Poor Host Galaxy
- Source :
- Lunnan, R., R. Chornock, E. Berger, D. Milisavljevic, M. Drout, N. E. Sanders, P. M. Challis, et al. 2013. Ps1-10bzj: A Fast, Hydrogen-Poor Superluminous Supernova in a Metal Poor Host Galaxy. The Astrophysical Journal 771, no. 2: 97. doi:10.1088/0004-637x/771/2/97.
- Publication Year :
- 2013
- Publisher :
- IOP Publishing, 2013.
-
Abstract
- We present observations and analysis of PS1-10bzj, a superluminous supernova (SLSN) discovered in the Pan-STARRS Medium Deep Survey at a redshift z = 0.650. Spectroscopically, PS1-10bzj is similar to the hydrogen-poor SLSNe 2005ap and SCP 06F6, though with a steeper rise and lower peak luminosity (Mbol ≃ −21.4 mag) than previous events. We construct a bolometric light curve, and show that while PS1-10bzj’s energetics were less extreme than previous events, its luminosity still cannot be explained by radioactive nickel decay alone. We explore both a magnetar spin-down and circumstellar interaction scenario and find that either can fit the data. PS1-10bzj is located in the Extended Chandra Deep Field South and the host galaxy is imaged in a number of surveys, including with the Hubble Space Telescope. The host is a compact dwarf galaxy (MB ≈ −18 mag, diameter. 800 pc), with a low stellar mass (M∗ ≈ 2.4 × 107 M⊙), young stellar population (τ∗ ≈ 5 Myr), and a star formation rate of ∼ 2 − 3 M⊙ yr−1 . The specific star formation rate is the highest seen in an SLSN host so far (∼ 100 Gyr−1). We detect the [O III] λ4363 line, and find a low metallicity: 12+(O/H) = 7.8 ± 0.2 (≃ 0.1Z⊙). Together, this indicates that at least some of the progenitors of SLSNe come from young, low-metallicity populations.<br />Astronomy
- Subjects :
- supernovae: general
supernovae: individual (PS1-10bzj)
Subjects
Details
- Language :
- English
- ISSN :
- 0004637X
- Database :
- Digital Access to Scholarship at Harvard (DASH)
- Journal :
- Lunnan, R., R. Chornock, E. Berger, D. Milisavljevic, M. Drout, N. E. Sanders, P. M. Challis, et al. 2013. Ps1-10bzj: A Fast, Hydrogen-Poor Superluminous Supernova in a Metal Poor Host Galaxy. The Astrophysical Journal 771, no. 2: 97. doi:10.1088/0004-637x/771/2/97.
- Publication Type :
- Academic Journal
- Accession number :
- edshld.1.30485096
- Document Type :
- Journal Article
- Full Text :
- https://doi.org/10.1088/0004-637x/771/2/97