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24 April 2024 |
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SN 2010kd: Photometric and Spectroscopic Analysis of a Slow-Decaying Superluminous Supernova | | Amit Kumar
; Shashi Bhushan Pandey
; Reka Konyves-Toth
; Ryan Staten
; Jozsef Vinko
; J. Craig Wheeler
; Weikang Zheng
; Alexei V. Filippenko
; Robert Kehoe
; Robert Quimby
; Yuan Fang
; Carl Akerlof
; Tim A. Mckay
; Emmanouil Chatzopoulos
; Benjamin P. Thomas
; Govinda Dhungana
; Amar Aryan
; Raya Dastidar
; Anjasha Gangopadhyay
; Rahul Gupta
; Kuntal Misra
; Brajesh Kumar
; Nameeta Brahme
; David Buckley
; | | Date: |
11 Feb 2020 | | Abstract: | This paper presents data and analysis of SN 2010kd, a low-redshift ($z =
0.101$) H-deficient superluminous supernova (SLSN), based on
ultraviolet/optical photometry and optical spectroscopy spanning between $-$28
and +194 days relative to $mathit{B}$ band maximum light. The $mathit{B}$
band light curve comparison of SN 2010kd with a subset of well-studied SLSNe I
at comparable redshifts indicates that it is a slow-decaying PTF12dam like
SLSN. Analytical light-curve modeling using the $mathtt{Minim}$ code suggests
that the bolometric light curve of SN 2010kd favors circumstellar matter
interaction for the powering mechanism. $mathtt{SYNAPPS}$ modeling of the
early-phase spectra does not identify broad H or He lines, whereas the
photospheric-phase spectra are dominated by O I, O II, C II, C IV and Si II,
particularly, presence of both low and high-velocity components of O II and Si
II lines. The nebular-phase spectra of SN 2010kd are dominated by O I and Ca II
emission lines similar to those seen in other SLSNe I. The line velocities in
SN 2010kd exhibit flatter evolution curves similar to SN 2015bn but with
comparatively higher values. SN 2010kd shows a higher single-zone local
thermodynamic equilibrium temperature in comparison to PTF12dam and SN 2015bn,
and it has an upper O I ejected mass limit of $sim 10~M_odot$. The host of SN
2010kd is a dwarf galaxy with a high star-formation rate ($sim 0.18 pm
0.04~M_odot$ yr$^{-1}$) and extreme emission lines. | | Source: | arXiv, 2002.4201 | | Services: | Forum | Review | PDF | Favorites | |
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