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The galactic center: Not an active galactic nucleus

Title
The galactic center: Not an active galactic nucleus
Authors
An D.Ramirez S.V.Sellgren K.
Ewha Authors
안덕근
SCOPUS Author ID
안덕근scopus
Issue Date
2013
Journal Title
Astrophysical Journal, Supplement Series
ISSN
0067-0049JCR Link
Citation
vol. 206, no. 2
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We present 10 μm-35 μm Spitzer spectra of the interstellar medium in the Central Molecular Zone (CMZ), the central 210 pc × 60 pc of the Galactic center (GC). We present maps of the CMZ in ionic and H2 emission, covering a more extensive area than earlier spectroscopic surveys in this region. The radial velocities and intensities of ionic lines and H 2 suggest that most of the H2 0-0 S(0) emission comes from gas along the line-of-sight, as found by previous work. We compare diagnostic line ratios measured in the Spitzer Infrared Nearby Galaxies Survey to our data. Previous work shows that forbidden line ratios can distinguish star-forming galaxies from low-ionization nuclear emission-line regions (LINERs) and active galactic nuclei (AGNs). Our GC line ratios agree with star-forming galaxies and not with LINERs or AGNs. © 2013. The American Astronomical Society. All rights reserved.
DOI
10.1088/0067-0049/206/2/20
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사범대학 > 과학교육과 > Journal papers
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