A dataset provided by the European Space Agency

Name OT2_mmeixner_4
Title Atomic and Molecular Gas Observations of Supernova Remnants in the Magellanic Clouds
URL

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DOI 10.5270/esa-nd0v3xq
Author meixner, m.
Description We propose PACs and SPIRE spectroscopy of three core-collapse supernova remnants (SNRs) in the Large and Small Magellanic Clouds (LMC, SMC): 1E0102-7219, N132D and N49. They are chosen to have a range of ages and degrees of interaction with nearby molecular clouds. We will use the spectroscopy to 1) constrain shock models, 2) judge the line contamination of broadband fluxes used to measure dust mass, 3) determine carbon and oxygen abundances and gas masses and 4) understand the CO ladder in cases where SNe shocks interact with molecular clouds. SNRs play a fundamental role in the evolution of galaxies: their ejecta drives the chemical evolution of the interstellar medium (ISM), and the energy liberated in their explosion drives the shock waves that generate bulk motions in the ISM, accelerate cosmic rays, regulate the star formation rate, and alters the size and properties of interstellar dust. In order to understand the life cycle of dust, which is the overarching science goal of the HERITAGE key program on the LMC and SMC, we must investigate SNR shocks in both the supernova ejecta and the ISM. SNRs radiate from radio to X-ray wavelengths, but far-infrared (FIR)-submm observations are crucial both because shock heated dust is visible in these bands and because the FIR lines in many cases dominate the cooling in SNRs. For the first time, Herschel provides the necessary sensitivity and spatial resolution to map LMC and SMC SNRs in several critical cooling lines in SNR shocks: [O I] 63um, [C II] 158 um and [O III] 88 um with PACS spectroscopy, and CO rotational lines with SPIRE-FTS. The atomic fine-structure transition lines in the FIR are important shock diagnostics particularly for the lower densities (~50-500 cm^{-3}). The submm molecular lines will provide critical information on the interaction of SNRs with neighboring molecular clouds. Comparison of our results with Herschel studies of Galactic SNRs will ...
Publication
Instrument SPIRE_SpireSpectrometer_, PACS_PacsRangeSpec_point, PACS_PacsLineSpec_large, PACS_PacsRangeSpec_large
Temporal Coverage 2013-02-04T02:54:41Z/2013-03-11T03:00:09Z
Version SPG v14.2.2
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2013-09-11T02:38:38Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-09-11T02:38:38Z, OT2_mmeixner_4, SPG v14.2.2. https://doi.org/10.5270/esa-nd0v3xq