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A Spitzer High-Resolution Mid-Infrared Spectral Atlas of Starburst Galaxies

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  • معلومة اضافية
    • Contributors:
      Hao, L.
    • الموضوع:
      2009
    • Collection:
      The University of Texas at Austin: Texas ScholarWorks
    • نبذة مختصرة :
      We present an atlas of Spitzer/IRS high-resolution (R similar to 600) 10-37 mu m spectra for 24 well known starburst galaxies. The spectra are dominated by fine-structure lines, molecular hydrogen lines, and emission bands of polycyclic aromatic hydrocarbons (PAHs). Six out of the eight objects with a known active galactic nucleus (AGN) component show emission of the high excitation [Ne v] line. This line is also seen in one other object (NGC 4194) with, a priori, no known AGN component. In addition to strong PAH emission features in this wavelength range (11.3, 12.7, 16.4 mu m), the spectra reveal other weak hydrocarbon features at 10.6, 13.5, 14.2 mu m, and a previously unreported emission feature at 10.75 mu m. An unidentified absorption feature at 13.7 mu m is detected in many of the starbursts. We use the fine-structure lines to derive the abundance of neon and sulfur for 14 objects where the Hi 7-6 line is detected. We further use the molecular hydrogen lines to sample the properties of the warm molecular gas. Several basic diagrams characterizing the properties of the sample are also shown. We have combined the spectra of all the pure starburst objects to create a high signal-to-noise ratio template, which is available to the community. ; EU ToK 39965 ; FP7-REGPOT 206469 ; Astronomy
    • File Description:
      application/pdf
    • ISSN:
      0067-0049
    • Relation:
      Astrophysical Journal Supplement Series; Bernard-Salas, J., H. W. W. Spoon, V. Charmandaris, V. Lebouteiller, D. Farrah, D. Devost, B. R. Brandl et al. "A Spitzer high-resolution mid-infrared spectral atlas of starburst galaxies." The Astrophysical Journal Supplement Series, Vol. 184, No. 2 (Oct., 2009): 230.; http://hdl.handle.net/2152/43019
    • الرقم المعرف:
      10.15781/T29G5GG8H
    • الرقم المعرف:
      10.1088/0067-0049/184/2/230
    • الدخول الالكتروني :
      http://hdl.handle.net/2152/43019
      https://doi.org/10.15781/T29G5GG8H
      https://doi.org/10.1088/0067-0049/184/2/230
    • Rights:
      Administrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University. ; Open
    • الرقم المعرف:
      edsbas.B90DA07D