Journal ArticleDOI
Far Infrared and Submillimeter Emission from Galactic and Extragalactic Photo-Dissociation Regions
Reads0
Chats0
TLDR
In this article, the effects of metallicity and cloud extinction on the predicted line intensities were examined for PDR models with densities over the range n=10^1-10^7 cm^-3.Abstract:
Photodissociation Region (PDR) models are computed over a wide range of physical conditions, from those appropriate to giant molecular clouds illuminated by the interstellar radiation field to the conditions experienced by circumstellar disks very close to hot massive stars. These models use the most up-to-date values of atomic and molecular data, the most current chemical rate coefficients, and the newest grain photoelectric heating rates which include treatments of small grains and large molecules. In addition, we examine the effects of metallicity and cloud extinction on the predicted line intensities. Results are presented for PDR models with densities over the range n=10^1-10^7 cm^-3 and for incident far-ultraviolet radiation fields over the range G_0=10^-0.5-10^6.5, for metallicities Z=1 and 0.1 times the local Galactic value, and for a range of PDR cloud sizes. We present line strength and/or line ratio plots for a variety of useful PDR diagnostics: [C II] 158 micron, [O I] 63 and 145 micron, [C I] 370 and 609 micron, CO J=1-0, J=2-1, J=3-2, J=6-5 and J=15-14, as well as the strength of the far-infrared continuum. These plots will be useful for the interpretation of Galactic and extragalactic far infrared and submillimeter spectra observable with ISO, SOFIA, SWAS, FIRST and other orbital and suborbital platforms. As examples, we apply our results to ISO and ground based observations of M82, NGC 278, and the Large Magellenic Cloud.read more
Citations
More filters
Journal ArticleDOI
First detection of [CII]158 μm at high redshift : vigorous star formation in the early universe
Roberto Maiolino,Pierre Cox,Paola Caselli,Alexandre Beelen,Frank Bertoldi,Chris Carilli,Michael J. Kaufman,Karl M. Menten,Tohru Nagao,Alain Omont,Axel Weiß,C. M. Walmsley,Fabian Walter +12 more
TL;DR: In this article, the authors reported the detection of the 2 P 3/2 → 2 P 1/2 fine-structure line of C + at 157.74 μm in SDSS J114816.64+525150.3, the most distant known quasar at z = 6.42, using the IRAM 30m telescope.
Journal ArticleDOI
Explaining the [C II]157.7 μm Deficit in Luminous Infrared Galaxies—First Results from a Herschel/PACS Study of the GOALS Sample
Tanio Díaz-Santos,Lee Armus,Vassilis Charmandaris,Vassilis Charmandaris,Sabrina Stierwalt,Eric J. Murphy,S. Haan,Hanae Inami,S. Malhotra,Rowin Meijerink,Gordon J. Stacey,Andreea Petric,Aaron S. Evans,Aaron S. Evans,Sylvain Veilleux,P. van der Werf,S. D. Lord,N. Y. Lu,Justin Howell,P. N. Appleton,Joseph M. Mazzarella,Jason Surace,C. K. Xu,Benjamin L. Schulz,D. B. Sanders,Carrie Bridge,Ben Chan,Dave Frayer,Kazushi Iwasawa,Jason Melbourne,Eckhard Sturm +30 more
TL;DR: In this article, the authors present the first results of a survey of the [C II]157.7 {$μ$}m emission line in 241 luminous infrared galaxies (LIRGs) comprising the Great Observatories All-sky LIRG Survey (GOALS) sample, obtained with the PACS instrument on board the Herschel Space Observatory.
Journal ArticleDOI
The warm gas atmosphere of the HD 100546 disk seen by Herschel - Evidence of a gas-rich, carbon-poor atmosphere?
TL;DR: In this paper, the sensitivity of the lines to the entering parameters and constrain the region from which the line radiation emerges was explored. But the results were limited to regions within some tens of AU and only a warm atmosphere with Tgas>>Tdust can reproduce the CO ladder.
Journal ArticleDOI
Herschel and SCUBA-2 imaging and spectroscopy of a bright, lensed submillimetre galaxy at z = 2.3
Rob Ivison,Rob Ivison,A. M. Swinbank,B. Swinyard,Ian Smail,Chris Pearson,Chris Pearson,Dimitra Rigopoulou,Dimitra Rigopoulou,Edward Polehampton,Edward Polehampton,Jean-Paul Baluteau,M. J. Barlow,Andrew Blain,J. J. Bock,J. J. Bock,David L. Clements,Kristen Coppin,Asantha Cooray,A. L. R. Danielson,Eli Dwek,Alastair C. Edge,Alberto Franceschini,Trevor Fulton,Jason Glenn,Matthew Joseph Griffin,Kate Gudrun Isaak,S. J. Leeks,T. L. Lim,David A. Naylor,S. J. Oliver,Mat Page,I. Perez Fournon,I. Perez Fournon,Michael Rowan-Robinson,Giorgio Savini,Douglas Scott,Locke D. Spencer,Ivan Valtchanov,L. Vigroux,Gillian S. Wright +40 more
TL;DR: In this article, a detailed analysis of the far-infrared properties of the bright, lensed, z = 2.3, sub-millimetre-selected galaxy (SMG), SMM 2135-0102 (hereafter SMM J2135), using new observations with Herschel, SCUBA-2 and the Very Large Array (VLA).
Journal ArticleDOI
First detection of [CII]158um at high redshift: vigorous star formation in the early universe
Roberto Maiolino,Peter Timothy Cox,Paola Caselli,Alexandre Beelen,Frank Bertoldi,Chris Carilli,Michael J. Kaufman,Karl M. Menten,Tohru Nagao,A. Omont,Axel Weiss,C. M. Walmsley,Fabian Walter +12 more
TL;DR: In this article, the authors reported the detection of the 2P_3/2 −2P_1/2 fine-structure line of C+ at 157.74 micron in SDSSJ114816.64+525150.3 (hereafter J1148+5251), the most distant known quasar, at z=6.42, using the IRAM 30-meter telescope.