The DOI matches its Crossref record; 56 of the 56 references it cites were found in a registry or an index.
The Mid‐Infrared Spectrum of Star‐forming Galaxies: Global Properties of Polycyclic Aromatic Hydrocarbon Emission
Open accessAbstract
We present a sample of low-resolution 5-38 μm Spitzer IRS spectra of the inner few square kiloparsecs of 59 nearby galaxies spanning a large range of star formation properties. A robust method for decomposing mid-infrared galaxy spectra is described and used to explore the behavior of PAH emission and the prevalence of silicate dust extinction. Evidence for silicate extinction is found in ~ of the sample, at strengths that indicate that most normal galaxies undergo A V ≲ 3 mag averaged over their centers. The contribution of PAH emission to the total infrared power is found to peak near 10% and extend up to ~20% and is suppressed at metallicities Z ≲ Z ☉ /4, as well as in low-luminosity AGN environments. Strong interband PAH feature strength variations (2-5 times) are observed, with the presence of a weak AGN and, to a lesser degree, increasing metallicity shifting power to the longer wavelength bands. A peculiar PAH emission spectrum with markedly diminished 5-8 μm features arises among the sample solely in systems with relatively hard radiation fields harboring low-luminosity AGNs. The AGNs may modify the emitting grain distribution and provide the direct excitation source of the unusual PAH emission, which cautions against using absolute PAH strength to estimate star formation rates in systems harboring active nuclei. Alternatively, the low star formation intensity often associated with weak AGNs may affect the spectrum. The effect of variations in the mid-infrared spectrum on broadband infrared surveys is modeled and points to more than a factor of 2 uncertainty in results that assume a fixed PAH emission spectrum, for redshifts z = 0-2.5.
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Cites
Starburst99: Synthesis Models for Galaxies with Active Star Formation
Leitherer, C., Schaerer, D., Goldader, J. D., Delgado, R. M. G., Robert, C., Kune, D. F., de Mello, D. F., Devost, D., & Heckman, T. M. (1999) · The Astrophysical Journal Supplement Series · doi:10.1086/313233 · Cited by 4,126
The host galaxies of active galactic nuclei
Kauffmann, G., Heckman, T. M., Tremonti, C., Brinchmann, J., Charlot, S., White, S. D. M., Ridgway, S. E., Brinkmann, J., Fukugita, M., Hall, P. B., et al. (2003) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2003.07154.x · Cited by 3,978
The interstellar extinction law from 1 to 13 microns
Rieke, G. H., & Lebofsky, M. J. (1985) · The Astrophysical Journal · doi:10.1086/162827 · Cited by 2,365
The host galaxies and classification of active galactic nuclei
Kewley, L. J., Groves, B., Kauffmann, G., & Heckman, T. (2006) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2006.10859.x · Cited by 2,160
The Multiband Imaging Photometer for Spitzer (MIPS)
Rieke, G. H., Young, E. T., Engelbracht, C. W., Kelly, D. M., Low, F. J., Haller, E. E., Beeman, J. W., Gordon, K. D., Stansberry, J. A., Misselt, K. A., et al. (2004) · The Astrophysical Journal Supplement Series · doi:10.1086/422717 · Cited by 2,044
Self-citationKauffmann, G., Heckman, T. M., Tremonti, C., Brinchmann, J., Charlot, S., White, S. D. M., Ridgway, S. E., Brinkmann, J., Fukugita, M., Hall, P. B., et al. (2003) · doi:10.48550/arxiv.astro-ph/0304239 · Cited by 1,845
The Infrared Spectrograph (IRS) on the Spitzer Space Telescope
Houck, J. R., Roellig, T. L., van Cleve, J., Forrest, W. J., Herter, T., Lawrence, C. R., Matthews, K., Reitsema, H. J., Soifer, B. T., Watson, D. M., et al. (2004) · The Astrophysical Journal Supplement Series · doi:10.1086/423134 · Cited by 1,526
Self-citationInfrared Emission from Interstellar Dust. II. The Diffuse Interstellar Medium
Li, A., & Draine, B. T. (2001) · The Astrophysical Journal · doi:10.1086/323147 · Cited by 1,408
Self-citationSINGS: The SIRTF Nearby Galaxies Survey
Kennicutt, Jr., Armus, L., Bendo, G., Calzetti, D., Dale, D. A., Draine, B. T., Engelbracht, C. W., Gordon, K. D., Grauer, A. D., Helou, G., et al. (2003) · Publications of the Astronomical Society of the Pacific · doi:10.1086/376941 · Cited by 1,264
Self-citationAllamandola, L. J., Tielens, A. G. G. M., & Barker, J. R. (1985) · The Astrophysical Journal · doi:10.1086/184435 · Cited by 1,248
Cited by
Star Formation in the Milky Way and Nearby Galaxies
Kennicutt, R. C., & Evans, N. J. (2012) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081811-125610 · Cited by 2,902
“…2005a; Farrah et al. 2007; Calzetti et al. 2007), but the PAH bands weaken dramatically below metal abundances of approximately 1/4 to 1/3 Z⊙ (e.g., Madden 2000; Engelbracht et al. 2005; Calzetti et al. 2007; Smith et al. 2007), rendering them problematic as quantitative SFR tracers in this regime.”
BackgroundSelf-citationDraine, B. T., & Li, A. (2007) · The Astrophysical Journal · doi:10.1086/511055 · Cited by 2,122
Self-citationMurphy, E. J., Condon, J. J., Schinnerer, E., Kennicutt, R. C., Calzetti, D., Armus, L., Helou, G., Turner, J. L., Aniano, G., Beirão, P., et al. (2011) · The Astrophysical Journal · doi:10.1088/0004-637x/737/2/67 · Cited by 852
Self-citationDUST-CORRECTED STAR FORMATION RATES OF GALAXIES. I. COMBINATIONS OF Hα AND INFRARED TRACERS
Kennicutt, R. C., Hao, C.-N., Calzetti, D., Moustakas, J., Dale, D. A., Bendo, G., Engelbracht, C. W., Johnson, B. D., & Lee, J. C. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/703/2/1672 · Cited by 604
Self-citationGruppioni, C., Pozzi, F., Rodighiero, G., Delvecchio, I., Berta, S., Pozzetti, L., Zamorani, G., Andreani, P., Cimatti, A., Ilbert, O., et al. (2013) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stt308 · Cited by 438
Metadata
- Authors
- Smith, J. D. T., Draine, B. T., Dale, D. A., Moustakas, J., Kennicutt, Jr., Helou, G., Armus, L., Roussel, H., Sheth, K., Bendo, G. J., Buckalew, B. A., Calzetti, D., Engelbracht, C. W., Gordon, K. D., Hollenbach, D. J., Li, A., Malhotra, S., Murphy, E. J., & Walter, F.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2007-02-20
- Volume
- 656
- Issue
- 2
- Pages
- 770-791
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2003637061
- Cited by
- 962
- References
- 56
- FWCI
- 43.28
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Smith, J. D. T., Draine, B. T., Dale, D. A., Moustakas, J., Kennicutt, Jr., Helou, G., Armus, L., Roussel, H., Sheth, K., Bendo, G. J., Buckalew, B. A., Calzetti, D., Engelbracht, C. W., Gordon, K. D., Hollenbach, D. J., Li, A., Malhotra, S., Murphy, E. J., & Walter, F. (2007). The Mid‐Infrared Spectrum of Star‐forming Galaxies: Global Properties of Polycyclic Aromatic Hydrocarbon Emission. The Astrophysical Journal. https://doi.org/10.1086/510549
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