The anatomy of star formation in NGC 300

G. Helou, H. Roussel, P. Appleton, D. Frayer, S. Stolovy, L. Storrie-Lombardi, R. Hurt, P. Lowrance, D. Makovoz, F. Maso, J. Surace, K. D. Gordon, A. Alonso-Herrero, C. W. Engelbracht, K. Misselt, George H. Rieke, Marcia J Rieke, S. P. Willner, M. Pahre, M. L N AshbyG. G. Fazio, H. A. Smith

Research output: Contribution to journalArticle

212 Citations (Scopus)

Abstract

The Spitzer Space Telescope was used to study the mid- to far-infrared properties of NGC 300 and to compare dust emission to Hα to elucidate the heating of the interstellar medium (ISM) and the star formation cycle at scales smaller than 100 pc. The new data allow us to discern clear differences in the spatial distribution of 8 μm dust emission with respect to 24 μm dust and to H II regions traced by Hα light. The 8 μm emission highlights the rims of H II regions, and the 24 μm emission is more strongly peaked in star-forming regions than 8 μm. We confirm the existence and approximate amplitude of interstellar dust emission at 4.5 μm, detected statistically in Infrared Space Observatory (ISO) data, and conclude it arises in star-forming regions. When averaging over regions larger than ∼1 kpc, the ratio of Hα to aromatic feature emission in NGC 300 is consistent with the values observed in disks of spiral galaxies. The mid- to far-infrared spectral energy distribution of dust emission is generally consistent with pre-Spitzer models.

Original languageEnglish (US)
Pages (from-to)253-258
Number of pages6
JournalAstrophysical Journal, Supplement Series
Volume154
Issue number1
DOIs
StatePublished - Sep 2004

Fingerprint

anatomy
star formation
dust
H II regions
Infrared Space Observatory (ISO)
stars
Space Infrared Telescope Facility
spiral galaxies
spectral energy distribution
rims
spatial distribution
observatory
heating
cycles
energy

Keywords

  • Galaxies: individual (NGC 300)
  • Galaxies: ISM
  • Infrared: galaxies
  • Stars: formation

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Helou, G., Roussel, H., Appleton, P., Frayer, D., Stolovy, S., Storrie-Lombardi, L., ... Smith, H. A. (2004). The anatomy of star formation in NGC 300. Astrophysical Journal, Supplement Series, 154(1), 253-258. https://doi.org/10.1086/422640

The anatomy of star formation in NGC 300. / Helou, G.; Roussel, H.; Appleton, P.; Frayer, D.; Stolovy, S.; Storrie-Lombardi, L.; Hurt, R.; Lowrance, P.; Makovoz, D.; Maso, F.; Surace, J.; Gordon, K. D.; Alonso-Herrero, A.; Engelbracht, C. W.; Misselt, K.; Rieke, George H.; Rieke, Marcia J; Willner, S. P.; Pahre, M.; Ashby, M. L N; Fazio, G. G.; Smith, H. A.

In: Astrophysical Journal, Supplement Series, Vol. 154, No. 1, 09.2004, p. 253-258.

Research output: Contribution to journalArticle

Helou, G, Roussel, H, Appleton, P, Frayer, D, Stolovy, S, Storrie-Lombardi, L, Hurt, R, Lowrance, P, Makovoz, D, Maso, F, Surace, J, Gordon, KD, Alonso-Herrero, A, Engelbracht, CW, Misselt, K, Rieke, GH, Rieke, MJ, Willner, SP, Pahre, M, Ashby, MLN, Fazio, GG & Smith, HA 2004, 'The anatomy of star formation in NGC 300', Astrophysical Journal, Supplement Series, vol. 154, no. 1, pp. 253-258. https://doi.org/10.1086/422640
Helou G, Roussel H, Appleton P, Frayer D, Stolovy S, Storrie-Lombardi L et al. The anatomy of star formation in NGC 300. Astrophysical Journal, Supplement Series. 2004 Sep;154(1):253-258. https://doi.org/10.1086/422640
Helou, G. ; Roussel, H. ; Appleton, P. ; Frayer, D. ; Stolovy, S. ; Storrie-Lombardi, L. ; Hurt, R. ; Lowrance, P. ; Makovoz, D. ; Maso, F. ; Surace, J. ; Gordon, K. D. ; Alonso-Herrero, A. ; Engelbracht, C. W. ; Misselt, K. ; Rieke, George H. ; Rieke, Marcia J ; Willner, S. P. ; Pahre, M. ; Ashby, M. L N ; Fazio, G. G. ; Smith, H. A. / The anatomy of star formation in NGC 300. In: Astrophysical Journal, Supplement Series. 2004 ; Vol. 154, No. 1. pp. 253-258.
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