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A Superluminous Supernova in High Surface Density Molecular Gas within the Bar of a Metal-rich Galaxy

Arabsalmani, M. ; Roychowdhury, S. ; Renaud, F. LU ; Cormier, D. ; Floc'H, E. Le ; Emsellem, E. ; Perley, D. A. ; Zwaan, M. A. ; Bournaud, F. and Arumugam, V. , et al. (2019) In Astrophysical Journal 882(1).
Abstract

We report the Atacama Large Millimeter/submillimeter Array observations of the metal-rich host galaxy of superluminous supernova (SLSN) PTF10tpz, a barred spiral galaxy at z = 0.03994. We find the CO(1-0) emission to be confined within the bar of the galaxy. The distribution and kinematics of molecular gas in the host galaxy resemble gas flows along two lanes running from the tips of the bar toward the galaxy center. These gas lanes end in a gaseous structure in the inner region of the galaxy, likely associated with an inner Lindblad resonance. The interaction between the large-scale gas flows in the bar and the gas in the inner region plausibly leads to the formation of massive molecular clouds and consequently massive clusters. This... (More)

We report the Atacama Large Millimeter/submillimeter Array observations of the metal-rich host galaxy of superluminous supernova (SLSN) PTF10tpz, a barred spiral galaxy at z = 0.03994. We find the CO(1-0) emission to be confined within the bar of the galaxy. The distribution and kinematics of molecular gas in the host galaxy resemble gas flows along two lanes running from the tips of the bar toward the galaxy center. These gas lanes end in a gaseous structure in the inner region of the galaxy, likely associated with an inner Lindblad resonance. The interaction between the large-scale gas flows in the bar and the gas in the inner region plausibly leads to the formation of massive molecular clouds and consequently massive clusters. This in turn can result in formation of massive stars, and thus the likely progenitor of the SLSN in a young, massive cluster. This picture is consistent with SLSN PTF10tpz being located near the intersection regions of the gas lanes and the inner structure. It is also supported by the high molecular gas surface densities that we find in the vicinity of the SLSN, surface densities that are comparable with those in interacting galaxies or starburst regions in nearby galaxies. Our findings therefore suggest in situ formation of massive stars due to the internal dynamics of the host galaxy and also lend support to high densities being favorable conditions for formation of SLSN progenitors.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
galaxies: ISM, ISM: kinematics and dynamics, ISM: molecules, submillimeter: galaxies, supernovae: individual (SLSN PTF10tpz)
in
Astrophysical Journal
volume
882
issue
1
article number
31
publisher
American Astronomical Society
external identifiers
  • scopus:85072320161
ISSN
0004-637X
DOI
10.3847/1538-4357/ab2897
language
English
LU publication?
yes
id
8a5acf5e-1fd8-4f48-a566-d9511862989d
date added to LUP
2019-10-01 14:13:18
date last changed
2024-02-15 22:32:51
@article{8a5acf5e-1fd8-4f48-a566-d9511862989d,
  abstract     = {{<p>We report the Atacama Large Millimeter/submillimeter Array observations of the metal-rich host galaxy of superluminous supernova (SLSN) PTF10tpz, a barred spiral galaxy at z = 0.03994. We find the CO(1-0) emission to be confined within the bar of the galaxy. The distribution and kinematics of molecular gas in the host galaxy resemble gas flows along two lanes running from the tips of the bar toward the galaxy center. These gas lanes end in a gaseous structure in the inner region of the galaxy, likely associated with an inner Lindblad resonance. The interaction between the large-scale gas flows in the bar and the gas in the inner region plausibly leads to the formation of massive molecular clouds and consequently massive clusters. This in turn can result in formation of massive stars, and thus the likely progenitor of the SLSN in a young, massive cluster. This picture is consistent with SLSN PTF10tpz being located near the intersection regions of the gas lanes and the inner structure. It is also supported by the high molecular gas surface densities that we find in the vicinity of the SLSN, surface densities that are comparable with those in interacting galaxies or starburst regions in nearby galaxies. Our findings therefore suggest in situ formation of massive stars due to the internal dynamics of the host galaxy and also lend support to high densities being favorable conditions for formation of SLSN progenitors.</p>}},
  author       = {{Arabsalmani, M. and Roychowdhury, S. and Renaud, F. and Cormier, D. and Floc'H, E. Le and Emsellem, E. and Perley, D. A. and Zwaan, M. A. and Bournaud, F. and Arumugam, V. and Moller, P.}},
  issn         = {{0004-637X}},
  keywords     = {{galaxies: ISM; ISM: kinematics and dynamics; ISM: molecules; submillimeter: galaxies; supernovae: individual (SLSN PTF10tpz)}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{American Astronomical Society}},
  series       = {{Astrophysical Journal}},
  title        = {{A Superluminous Supernova in High Surface Density Molecular Gas within the Bar of a Metal-rich Galaxy}},
  url          = {{http://dx.doi.org/10.3847/1538-4357/ab2897}},
  doi          = {{10.3847/1538-4357/ab2897}},
  volume       = {{882}},
  year         = {{2019}},
}