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Title: A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta–CSM Interaction Region and Hot Dust Emission from Newly Formed Dust

Abstract

We discuss the discovery of an SN 1988Z–like type IIn supernova KISS15s found in a low-mass star-forming galaxy at redshift z = 0.038 during the course of the Kiso Supernova Survey (KISS). KISS15s shows long-duration optical continuum and emission line light curves, suggesting that KISS15s is powered by a continuous interaction between the expanding ejecta and dense circumstellar medium (CSM). The Hα emission line profile can be decomposed into four Gaussians of narrow, intermediate, blueshifted intermediate, and broad velocity width components, with a full width at half maximum of lesssim100, ~2000, and ~14,000 km s–1 for the narrow, intermediate, and broad components, respectively. The presence of the blueshifted intermediate component, of which the line-of-sight velocity relative to the systemic velocity is about –5000 km s–1, suggests that the ejecta-CSM interaction region has an inhomogeneous morphology and anisotropic expansion velocity. We found that KISS15s shows increasing infrared continuum emission, which can be interpreted as hot dust thermal emission of T ~ 1200 K from newly formed dust in a cool, dense shell in the ejecta-CSM interaction region. The progenitor mass-loss rate, inferred from bolometric luminosity, is $$\dot{M}\sim 0.4\,{M}_{\odot }\,{\mathrm{yr}}^{-1}\,({v}_{w}/40\,\mathrm{km}\,{{\rm{s}}}^{-1})$$, where v w is the progenitor's stellar wind velocity. This implies that the progenitor of KISS15s was a red supergiant star or a luminous blue variable that had experienced a large mass loss in the centuries before the explosion.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [4]; ORCiD logo [5];  [5];  [2];  [2]
  1. Tohoku Univ., Sendai (Japan)
  2. Univ. of Tokyo (Japan)
  3. Univ. of Tokyo (Japan); Konan Univ., Kobe (Japan)
  4. National Inst. of Natural Sciences, Tokyo (Japan)
  5. Univ. of Washington, Seattle, WA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
OSTI Identifier:
1544085
Grant/Contract Number:  
AC02-05CH1123
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 872; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; circumstellar matter; stars: mass-loss; supernovae: general; supernovae: individual (KISS15s, 1988Z)

Citation Formats

Kokubo, Mitsuru, Mitsuda, Kazuma, Morokuma, Tomoki, Tominaga, Nozomu, Tanaka, Masaomi, Moriya, Takashi J., Yoachim, Peter, Ivezić, Željko, Sako, Shigeyuki, and Doi, Mamoru. A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta–CSM Interaction Region and Hot Dust Emission from Newly Formed Dust. United States: N. p., 2019. Web. doi:10.3847/1538-4357/aaff6b.
Kokubo, Mitsuru, Mitsuda, Kazuma, Morokuma, Tomoki, Tominaga, Nozomu, Tanaka, Masaomi, Moriya, Takashi J., Yoachim, Peter, Ivezić, Željko, Sako, Shigeyuki, & Doi, Mamoru. A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta–CSM Interaction Region and Hot Dust Emission from Newly Formed Dust. United States. https://doi.org/10.3847/1538-4357/aaff6b
Kokubo, Mitsuru, Mitsuda, Kazuma, Morokuma, Tomoki, Tominaga, Nozomu, Tanaka, Masaomi, Moriya, Takashi J., Yoachim, Peter, Ivezić, Željko, Sako, Shigeyuki, and Doi, Mamoru. Tue . "A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta–CSM Interaction Region and Hot Dust Emission from Newly Formed Dust". United States. https://doi.org/10.3847/1538-4357/aaff6b. https://www.osti.gov/servlets/purl/1544085.
@article{osti_1544085,
title = {A Long-duration Luminous Type IIn Supernova KISS15s: Strong Recombination Lines from the Inhomogeneous Ejecta–CSM Interaction Region and Hot Dust Emission from Newly Formed Dust},
author = {Kokubo, Mitsuru and Mitsuda, Kazuma and Morokuma, Tomoki and Tominaga, Nozomu and Tanaka, Masaomi and Moriya, Takashi J. and Yoachim, Peter and Ivezić, Željko and Sako, Shigeyuki and Doi, Mamoru},
abstractNote = {We discuss the discovery of an SN 1988Z–like type IIn supernova KISS15s found in a low-mass star-forming galaxy at redshift z = 0.038 during the course of the Kiso Supernova Survey (KISS). KISS15s shows long-duration optical continuum and emission line light curves, suggesting that KISS15s is powered by a continuous interaction between the expanding ejecta and dense circumstellar medium (CSM). The Hα emission line profile can be decomposed into four Gaussians of narrow, intermediate, blueshifted intermediate, and broad velocity width components, with a full width at half maximum of lesssim100, ~2000, and ~14,000 km s–1 for the narrow, intermediate, and broad components, respectively. The presence of the blueshifted intermediate component, of which the line-of-sight velocity relative to the systemic velocity is about –5000 km s–1, suggests that the ejecta-CSM interaction region has an inhomogeneous morphology and anisotropic expansion velocity. We found that KISS15s shows increasing infrared continuum emission, which can be interpreted as hot dust thermal emission of T ~ 1200 K from newly formed dust in a cool, dense shell in the ejecta-CSM interaction region. The progenitor mass-loss rate, inferred from bolometric luminosity, is $\dot{M}\sim 0.4\,{M}_{\odot }\,{\mathrm{yr}}^{-1}\,({v}_{w}/40\,\mathrm{km}\,{{\rm{s}}}^{-1})$, where v w is the progenitor's stellar wind velocity. This implies that the progenitor of KISS15s was a red supergiant star or a luminous blue variable that had experienced a large mass loss in the centuries before the explosion.},
doi = {10.3847/1538-4357/aaff6b},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 872,
place = {United States},
year = {Tue Feb 19 00:00:00 EST 2019},
month = {Tue Feb 19 00:00:00 EST 2019}
}

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SYSTEMATIC BLUESHIFT OF LINE PROFILES IN THE TYPE IIn SUPERNOVA 2010jl: EVIDENCE FOR POST-SHOCK DUST FORMATION?
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SN 2010jl IN UGC 5189: YET ANOTHER LUMINOUS TYPE IIn SUPERNOVA IN A METAL-POOR GALAXY
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MULTI-WAVELENGTH OBSERVATIONS OF THE ENDURING TYPE IIn SUPERNOVAE 2005ip AND 2006jd
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Metallicity at the explosion sites of interacting transients
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Carnegie Supernova Project: Observations of Type IIn supernovae
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THE Pan-STARRS1 PHOTOMETRIC SYSTEM
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The Origin of the Mass‐Metallicity Relation: Insights from 53,000 Star‐forming Galaxies in the Sloan Digital Sky Survey
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Discovery of Transient Infrared Emission from dust Heated by Stellar Tidal Disruption Flares
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Gaia Data Release 2 : The celestial reference frame (
journal, August 2018


Delayed Shock-induced Dust Formation in the Dense Circumstellar Shell Surrounding the Type IIn Supernova SN 2010jl
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The Detection of a SN IIn in Optical Follow-Up Observations of IceCube Neutrino Events
text, January 2015

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Gaia Data Release 2: Processing of the photometric data
journal, August 2018


Active Galactic Nuclei
audiovisual, January 2013


SkyMapper DR1
dataset, January 2017


The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary
text, January 2007


SN 2008iy: An Unusual Type IIn Supernova with an Enduring 400 Day Rise Time
text, January 2009


Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
text, January 2010


The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
text, January 2010


Generalized Semi-Analytical Models of Supernova Light Curves
text, January 2011


Multi-wavelength Observations of the Enduring Type IIn Supernovae 2005ip and 2006jd
text, January 2012


The Peculiar Balmer Decrement of SN 2009ip: Constraints on Circumstellar Geometry
text, January 2012


Mass-loss histories of Type IIn supernova progenitors within decades before their explosion
text, January 2014


Rapid formation of large dust grains in the luminous supernova SN 2010jl
text, January 2014


KOSMOS and COSMOS: New facility instruments for the NOAO 4-meter telescopes
text, January 2014


Numerical simulations of super-luminous supernovae of type IIn
text, January 2015


Optical observations of the luminous Type IIn Supernova 2010jl for over 900 days
text, January 2015


Metallicity at the explosion sites of interacting transients
text, January 2015


Early Dust Formation and a Massive Progenitor for SN 2011ja?
text, January 2015


Models of interacting supernovae and their spectral diversity
text, January 2016


The wind speeds, dust content, and mass-loss rates of evolved AGB and RSG stars at varying metallicity
text, January 2016


Electron scattering wings on lines in interacting supernovae
text, January 2017


The physical properties of star forming galaxies in the low redshift universe
text, January 2003


On Extending the Mass-Metallicity Relation of Galaxies by 2.5 Decades in Stellar Mass
text, January 2006


The Expulsion of Stellar Envelopes in Core-Collapse Supernovae
text, January 1998


Star Formation in Galaxies Along the Hubble Sequence
text, January 1998


SN 1988Z: Spectro-photometric catalogue and energy estimates
text, January 1999


Works referencing / citing this record:

Supernova Ejecta Interacting with a Circumstellar Disk. I. Two-dimensional Radiation-hydrodynamic Simulations
journal, December 2019

  • Suzuki, Akihiro; Moriya, Takashi J.; Takiwaki, Tomoya
  • The Astrophysical Journal, Vol. 887, Issue 2
  • DOI: 10.3847/1538-4357/ab5a83