First Results from the \(Herschel\) and ALMA Spectroscopic Surveys of the SMC: The Relationship Between [CII]-bright Gas and CO-bright Gas at Low Metallicity

First Results from the \(Herschel\) and ALMA Spectroscopic Surveys of the SMC: The Relationship Between [CII]-bright Gas and CO-bright Gas at Low Metallicity

The Small Magellanic Cloud (SMC) provides the only laboratory to study the structure of molecular gas at high resolution and low metallicity. We present results from the Herschel Spectroscopic Survey of the SMC (HS\(^{3}\)), which mapped the key far-IR cooling lines [CII], [OI], [NII], and [OIII] in...

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Veröffentlicht in:arXiv.org 2018-01
Hauptverfasser: Jameson, Katherine E, Bolatto, Alberto D, Wolfire, Mark, Warren, Steven R, Herrera-Camus, Rodrigo, Croxall, Kevin, Pellegrini, Eric, Smith, John-David, Rubio, Monica, Indebetouw, Remy, Israel, Frank P, Meixner, Margaret, Roman-Duval, Julia, van Loon, Jacco Th, Muller, Erik, Verdugo, Celia, Zinnecker, Hans, Okada, Yoko
Format: Artikel
Sprache:eng
Schlagworte:
Computer simulation
Continuum radiation
Magellanic clouds
Metallicity
Molecular clouds
Molecular gases
Molecular structure
Photodissociation
Spectroscopy
Star formation
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Zusammenfassung:The Small Magellanic Cloud (SMC) provides the only laboratory to study the structure of molecular gas at high resolution and low metallicity. We present results from the Herschel Spectroscopic Survey of the SMC (HS\(^{3}\)), which mapped the key far-IR cooling lines [CII], [OI], [NII], and [OIII] in five star-forming regions, and new ALMA 7m-array maps of \(^{12}\)CO and \(^{13}\)CO \((2-1)\) with coverage overlapping four of the five HS\(^{3}\) regions. We detect [CII] and [OI] throughout all of the regions mapped. The data allow us to compare the structure of the molecular clouds and surrounding photodissociation regions using \(^{13}\)CO, CO, [CII], and [OI] emission at \(
ISSN:2331-8422
DOI:10.48550/arxiv.1801.03518