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Star formation and dust heating in the FIR bright sources of M83

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Abstract
We investigate star formation and dust heating in the compact far-infrared (FIR) bright sources detected in the Herschel maps of M83. We use the source extraction code getsources to detect and extract sources in the FIR, as well as their photometry in the mid-infrared and H alpha. By performing infrared spectral energy distribution fitting and applying an H alpha-based star formation rate (SFR) calibration, we derive the dust masses and temperatures, SFRs, gas masses and star formation efficiencies (SFEs). The detected sources lie exclusively on the spiral arms and represent giant molecular associations, with gas masses and sizes of 10(6)-10(8) M-circle dot and 200-300 pc, respectively. The inferred parameters show little to no radial dependence and there is only a weak correlation between the SFRs and gas masses, which suggests that more massive clouds are less efficient at forming stars. Dust heating is mainly due to local star formation. However, although the sources are not optically thick, the total intrinsic young stellar population luminosity can almost completely account for the dust luminosity. This suggests that other radiation sources also contribute to the dust heating and approximately compensate for the unabsorbed fraction of UV light.
Keywords
GIANT MOLECULAR CLOUDS, SPECTRAL ENERGY-DISTRIBUTION, galaxies: spiral, galaxies: ISM, galaxies: individual: M83, HERSCHEL REFERENCE SURVEY, VIRGO CLUSTER GALAXIES, GAS DEPLETION TIME, NEARBY GALAXIES, FORMATION LAW, SPIRAL GALAXIES, FORMATION EFFICIENCY, FORMING GALAXIES

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MLA
Foyle, K, G Natale, CD Wilson, et al. “Star Formation and Dust Heating in the FIR Bright Sources of M83.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 432.3 (2013): 2182–2207. Print.
APA
Foyle, K., Natale, G., Wilson, C., Popescu, C., Baes, M., Bendo, G., Boquien, M., et al. (2013). Star formation and dust heating in the FIR bright sources of M83. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 432(3), 2182–2207.
Chicago author-date
Foyle, K, G Natale, CD Wilson, CC Popescu, Maarten Baes, GJ Bendo, M Boquien, et al. 2013. “Star Formation and Dust Heating in the FIR Bright Sources of M83.” Monthly Notices of the Royal Astronomical Society 432 (3): 2182–2207.
Chicago author-date (all authors)
Foyle, K, G Natale, CD Wilson, CC Popescu, Maarten Baes, GJ Bendo, M Boquien, A Boselli, A Cooray, D Cormier, Ilse De Looze, J Fischera, OŁ Karczewski, V Lebouteiller, S Madden, M Pereira-Santaella, MWL Smith, L Spinoglio, and RJ Tuffs. 2013. “Star Formation and Dust Heating in the FIR Bright Sources of M83.” Monthly Notices of the Royal Astronomical Society 432 (3): 2182–2207.
Vancouver
1.
Foyle K, Natale G, Wilson C, Popescu C, Baes M, Bendo G, et al. Star formation and dust heating in the FIR bright sources of M83. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2013;432(3):2182–207.
IEEE
[1]
K. Foyle et al., “Star formation and dust heating in the FIR bright sources of M83,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol. 432, no. 3, pp. 2182–2207, 2013.
@article{4385475,
  abstract     = {We investigate star formation and dust heating in the compact far-infrared (FIR) bright sources detected in the Herschel maps of M83. We use the source extraction code getsources to detect and extract sources in the FIR, as well as their photometry in the mid-infrared and H alpha. By performing infrared spectral energy distribution fitting and applying an H alpha-based star formation rate (SFR) calibration, we derive the dust masses and temperatures, SFRs, gas masses and star formation efficiencies (SFEs). The detected sources lie exclusively on the spiral arms and represent giant molecular associations, with gas masses and sizes of 10(6)-10(8) M-circle dot and 200-300 pc, respectively. The inferred parameters show little to no radial dependence and there is only a weak correlation between the SFRs and gas masses, which suggests that more massive clouds are less efficient at forming stars. Dust heating is mainly due to local star formation. However, although the sources are not optically thick, the total intrinsic young stellar population luminosity can almost completely account for the dust luminosity. This suggests that other radiation sources also contribute to the dust heating and approximately compensate for the unabsorbed fraction of UV light.},
  author       = {Foyle, K and Natale, G and Wilson, CD and Popescu, CC and Baes, Maarten and Bendo, GJ and Boquien, M and Boselli, A and Cooray, A and Cormier, D and De Looze, Ilse and Fischera, J and Karczewski, OŁ and Lebouteiller, V and Madden, S and Pereira-Santaella, M and Smith, MWL and Spinoglio, L and Tuffs, RJ},
  issn         = {0035-8711},
  journal      = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
  keywords     = {GIANT MOLECULAR CLOUDS,SPECTRAL ENERGY-DISTRIBUTION,galaxies: spiral,galaxies: ISM,galaxies: individual: M83,HERSCHEL REFERENCE SURVEY,VIRGO CLUSTER GALAXIES,GAS DEPLETION TIME,NEARBY GALAXIES,FORMATION LAW,SPIRAL GALAXIES,FORMATION EFFICIENCY,FORMING GALAXIES},
  language     = {eng},
  number       = {3},
  pages        = {2182--2207},
  title        = {Star formation and dust heating in the FIR bright sources of M83},
  url          = {http://dx.doi.org/10.1093/mnras/stt618},
  volume       = {432},
  year         = {2013},
}

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