The DOI matches its Crossref record; 78 of the 78 references it cites were found in a registry or an index.
A Herschel/PACS Far-infrared Line Emission Survey of Local Luminous Infrared Galaxies
Open accessAbstract
We present an analysis of , [O iii]88, [N ii]122, and far-infrared (FIR) fine-structure line observations obtained with Herschel/PACS, for ∼240 local luminous infrared galaxies (LIRGs) in the Great Observatories All-sky LIRG Survey. We find pronounced declines (“deficits”) of line-to-FIR continuum emission for [N ii]122, , and as a function of FIR color and infrared luminosity surface density, . The median electron density of the ionized gas in LIRGs, based on the [N ii]122/[N ii]205 ratio, is = 41 cm−3. We find that the dispersion in the deficit of LIRGs is attributed to a varying fractional contribution of photodissociation regions (PDRs) to the observed emission, f( ) = / , which increases from ∼60% to ∼95% in the warmest LIRGs. The / ratio is tightly correlated with the PDR gas kinetic temperature in sources where is not optically thick or self-absorbed. For each galaxy, we derive the average PDR hydrogen density, , and intensity of the interstellar radiation field, G, in units of and find G/ ratios of ∼0.1–50 cm 3, with ULIRGs populating the upper end of the distribution. There is a relation between G/ and , showing a critical break at ≃ 5 × 10 10 L ⊙ kpc−2. Below , G/ remains constant, ≃0.32 cm 3, and variations in are driven by the number density of star-forming regions within a galaxy, with no change in their PDR properties. Above , G/ increases rapidly with , signaling a departure from the typical PDR conditions found in normal star-forming galaxies toward more intense/harder radiation fields and compact geometries typical of starbursting sources.
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Cites
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Herschel Space Observatory: An ESA facility for far-infrared and submillimetre astronomy
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Self-citationTurbulence and star formation in molecular clouds
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The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
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Cited by
An ALMA [C ii] Survey of 27 Quasars at z > 5.94
Decarli, R., Walter, F., Venemans, B. P., Bañados, E., Bertoldi, F., Carilli, C., Fan, X., Farina, E. P., Mazzucchelli, C., Riechers, D., et al. (2018) · The Astrophysical Journal · doi:10.3847/1538-4357/aaa5aa · Cited by 308
Metadata
- Authors
- Díaz-Santos, T., Armus, L., Charmandaris, V., Lu, N., Stierwalt, S., Stacey, G., Malhotra, S., Werf, P. P. V. D., Howell, J. H., Privon, G. C., Mazzarella, J. M., Goldsmith, P. F., Murphy, E. J., Barcos-Muñoz, L., Linden, S. T., Inami, H., Larson, K. L., Evans, A. S., Appleton, P., Iwasawa, K., Lord, S., Sanders, D. B., & Surace, J. A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2017-08-29
- Volume
- 846
- Issue
- 1
- Pages
- 32
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2615022007
- Cited by
- 283
- References
- 78
- FWCI
- 16.17
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Díaz-Santos, T., Armus, L., Charmandaris, V., Lu, N., Stierwalt, S., Stacey, G., Malhotra, S., Werf, P. P. V. D., Howell, J. H., Privon, G. C., Mazzarella, J. M., Goldsmith, P. F., Murphy, E. J., Barcos-Muñoz, L., Linden, S. T., Inami, H., Larson, K. L., Evans, A. S., Appleton, P., . . . Surace, J. A. (2017). A Herschel/PACS Far-infrared Line Emission Survey of Local Luminous Infrared Galaxies. The Astrophysical Journal. https://doi.org/10.3847/1538-4357/aa81d7
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