THE INFLUENCE OF SUPERNOVA REMNANTS ON THE INTERSTELLAR MEDIUM IN THE LARGE MAGELLANIC CLOUD SEEN AT 20-600 μm WAVELENGTHS

Journal Article · Tue Jan 20 04:00:00 EST 2015 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/799/1/50· OSTI ID:22364443

Lakićević, Maša; Van Loon, Jacco Th. ^[1]; Meixner, Margaret; Gordon, Karl; Roman-Duval, Julia; Seale, Jonathan ^[2]; Bot, Caroline ^[3]; Babler, Brian ^[4]; Bolatto, Alberto ^[5]; Engelbracht, Chad; Misselt, Karl; Montiel, Edward ^[6]; Filipović, Miroslav ^[7]; Hony, Sacha; Okumura, K.; Panuzzo, Pasquale; Sauvage, Marc ^[8]; Indebetouw, Remy ^[9]; Patat, Ferdinando ^[10]; Sonneborn, George ^[11] ; others, and

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1. Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG (United Kingdom)
2. Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218 (United States)
3. Observatoire astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l'université, F-67000 Strasbourg (France)
4. Department of Astronomy, 475 north Charter St., University of Wisconsin, Madison, WI 53706 (United States)
5. Laboratory of Millimeter Astronomy, University of Maryland, College Park, MD 29742 (United States)
6. Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721 (United States)
7. University of Western Sydney, Locked Bag 1797, Penrith South DC, NSW 1797 (Australia)
8. CEA, Laboratoire AIM, Irfu/SAp, Orme des Merisiers, F-91191 Gif-sur-Yvette (France)
9. Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22903 (United States)
10. European Organization for Astronomical Research in the Southern Hemisphere (ESO), Karl-Schwarzschild-Straße 2, D-85748 Garching bei München (Germany)
11. NASA Goddard Space Flight Center, Code 665, Greenbelt, MD 20771 (United States)

We present the analysis of supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) and their influence on the environment at far-infrared (FIR) and submillimeter wavelengths. We use new observations obtained with the Herschel Space Observatory and archival data obtained with the Spitzer Space Telescope, to make the first FIR atlas of these objects. The SNRs are not clearly discernible at FIR wavelengths; however, their influence becomes apparent in maps of dust mass and dust temperature, which we constructed by fitting a modified blackbody to the observed spectral energy distribution in each sightline. Most of the dust that is seen is pre-existing interstellar dust in which SNRs leave imprints. The temperature maps clearly reveal SNRs heating surrounding dust, while the mass maps indicate the removal of 3.7{sub −2.5}{sup +7.5} M {sub ☉} of dust per SNR. This agrees with the calculations by others that significant amounts of dust are sputtered by SNRs. Under the assumption that dust is sputtered and not merely pushed away, we estimate a dust destruction rate in the LMC of 0.037{sub −0.025}{sup +0.075} M {sub ☉} yr{sup –1} due to SNRs, yielding an average lifetime for interstellar dust of 2{sub −1.3}{sup +4.0}×10{sup 7} yr. We conclude that sputtering of dust by SNRs may be an important ingredient in models of galactic evolution, that supernovae may destroy more dust than they produce, and that they therefore may not be net producers of long lived dust in galaxies.

• OSTI ID: 22364443
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 799; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
COSMIC DUST
ENERGY SPECTRA
FAR INFRARED RADIATION
GALACTIC EVOLUTION
INTERSTELLAR SPACE
LIFETIME
MAGELLANIC CLOUDS
MASS
SPACE
SUPERNOVA REMNANTS
SUPERNOVAE
TELESCOPES
WAVELENGTHS