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Title: Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B

Abstract

We present results of integral field spectroscopy of Balmer-dominated shocks in the LMC supernova remnant (SNR) N103B, carried out using the Wide Field Integral Spectrograph (WiFeS ) on the 2.3 m telescope at the Siding Spring Observatory in Australia. Existing X-ray studies of N103B have indicated an SN Ia origin. Radiative shock emission from clumpy material surrounding the SNR may result from interaction of the forward shock with relic stellar wind material, possibly implicating a thermonuclear explosion in a single-degenerate binary system. The recently discovered Balmer-dominated shocks mark the impact of the forward shock with low density, partially neutral CSM gas, and form a partial shell encircling clumps of material exhibiting radiative shocks. The WiFeS spectra of N103B reveal broad H α emission having a width as high as 2350 km s{sup −1} along the northern rim, and both H α and H β broad profiles having widths around 1300 km s{sup −1} along the southern rim. Fits to the H α line profiles indicate that in addition to the usual broad and narrow emission components, a third component of intermediate width exists in these Balmer-dominated shocks, ranging from around 125 km s{sup −1} up to 225 km s{sup −1}more » in width. This is consistent with predictions of recent Balmer-dominated shock models, which predict that an intermediate-width component will be generated in a fast neutral precursor. We derive a Sedov age of approximately 685 ± 20 years for N103B from the Balmer-dominated spectra, consistent with the young age of 380–860 years estimated from light echo studies.« less

Authors:
 [1]; ;  [2];  [3];  [4];  [5];  [6]
  1. Department of Physics, Astronomy and Geosciences, Towson University, Towson, MD 21252 (United States)
  2. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611 (Australia)
  3. European Southern Observatory, Av. Alonso de Córdova 3107, 763 0355 Vitacura, Santiago (Chile)
  4. Department of Physics and Astronomy, University of Georgia (United States)
  5. NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  6. Department of Physics, Middlebury College, Middlebury, VT 05753 (United States)
Publication Date:
OSTI Identifier:
22679798
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 847; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; BALMER LINES; DENSITY; EMISSION; INTERACTIONS; MAGELLANIC CLOUDS; PLASMA; PRECURSOR; RESONANCE IONIZATION MASS SPECTROSCOPY; SHOCK WAVES; SPECTRA; STELLAR WINDS; SUPERNOVA REMNANTS; TELESCOPES; THERMONUCLEAR EXPLOSIONS; VISIBLE RADIATION

Citation Formats

Ghavamian, Parviz, Seitenzahl, Ivo R., Dopita, M. A., Vogt, Frédéric P. A., Terry, Jason P., Williams, Brian J., and Winkler, P. Frank, E-mail: pghavamian@towson.edu. Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA83B8.
Ghavamian, Parviz, Seitenzahl, Ivo R., Dopita, M. A., Vogt, Frédéric P. A., Terry, Jason P., Williams, Brian J., & Winkler, P. Frank, E-mail: pghavamian@towson.edu. Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B. United States. doi:10.3847/1538-4357/AA83B8.
Ghavamian, Parviz, Seitenzahl, Ivo R., Dopita, M. A., Vogt, Frédéric P. A., Terry, Jason P., Williams, Brian J., and Winkler, P. Frank, E-mail: pghavamian@towson.edu. Sun . "Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B". United States. doi:10.3847/1538-4357/AA83B8.
@article{osti_22679798,
title = {Integral Field Spectroscopy of Balmer-dominated Shocks in the Magellanic Cloud Supernova Remnant N103B},
author = {Ghavamian, Parviz and Seitenzahl, Ivo R. and Dopita, M. A. and Vogt, Frédéric P. A. and Terry, Jason P. and Williams, Brian J. and Winkler, P. Frank, E-mail: pghavamian@towson.edu},
abstractNote = {We present results of integral field spectroscopy of Balmer-dominated shocks in the LMC supernova remnant (SNR) N103B, carried out using the Wide Field Integral Spectrograph (WiFeS ) on the 2.3 m telescope at the Siding Spring Observatory in Australia. Existing X-ray studies of N103B have indicated an SN Ia origin. Radiative shock emission from clumpy material surrounding the SNR may result from interaction of the forward shock with relic stellar wind material, possibly implicating a thermonuclear explosion in a single-degenerate binary system. The recently discovered Balmer-dominated shocks mark the impact of the forward shock with low density, partially neutral CSM gas, and form a partial shell encircling clumps of material exhibiting radiative shocks. The WiFeS spectra of N103B reveal broad H α emission having a width as high as 2350 km s{sup −1} along the northern rim, and both H α and H β broad profiles having widths around 1300 km s{sup −1} along the southern rim. Fits to the H α line profiles indicate that in addition to the usual broad and narrow emission components, a third component of intermediate width exists in these Balmer-dominated shocks, ranging from around 125 km s{sup −1} up to 225 km s{sup −1} in width. This is consistent with predictions of recent Balmer-dominated shock models, which predict that an intermediate-width component will be generated in a fast neutral precursor. We derive a Sedov age of approximately 685 ± 20 years for N103B from the Balmer-dominated spectra, consistent with the young age of 380–860 years estimated from light echo studies.},
doi = {10.3847/1538-4357/AA83B8},
journal = {Astrophysical Journal},
number = 2,
volume = 847,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}