Infrared Dust Bubbles: Probing the Detailed Structure and Young Massive Stellar Populations of Galactic HiiRegions

2008/06/03 by C. Watson, Matthew S. Povich, M. S. Povich +12 · 185 citations
Chemistry · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Bubble #Chemistry #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Infrared #Ionization #Photosphere #Physics #Spectral energy distribution #Spectral line #Star formation #Stellar, planetary, and galactic studies #Young stellar object #astro-ph

paper · pdf · doi:10.1086/588005

published in The Astrophysical Journal 681(2), 1341-1355 (IOP Publishing) · 37 pages, 17 figures

arxiv created 2008/06/03 · openalex publication_date 2008/07/10 · arxiv updated 2009/12/01 · openalex created_date 2022/05/12 · openalex updated_date 2026/08/06

Abstract

We present an analysis of wind-blown, parsec-sized, mid-infrared bubbles and associated star formation using the GLIMPSE IRAC, MIPSGAL MIPS, and MAGPIS VLA surveys. Three bubbles from the Churchwell et al. catalog were selected. The relative distribution of the ionized gas (based on 20 cm emission), PAH emission (based on 8 μm, 5.8 μm, and lack of 4.5 μm emission), and hot dust (24 μm emission) is compared. At the center of each bubble there is a region containing ionized gas and hot dust surrounded by PAHs. We identify the likely source(s) of the stellar wind and ionizing flux producing each bubble based on SED fitting to numerical hot stellar photosphere models. Candidate YSOs are also identified using SED fitting, including several sites of possible triggered star formation.

Citations

• GLIMPSE. I. AnSIRTFLegacy Project to Map the Inner Galaxy
• Interpreting Spectral Energy Distributions from Young Stellar Objects. II. Fitting Observed SEDs Using a Large Grid of Precomputed Models
• A new calibration of stellar parameters of Galactic O stars
• The Spitzer Space Telescope Mission
• Two‐dimensional Radiative Transfer in Protostellar Envelopes. II. An Evolutionary Sequence
• Two‐dimensional Radiative Transfer in Protostellar Envelopes. I. Effects of Geometry on Class I Sources
• Mass-loss predictions for O and B stars as a function of metallicity

Cited by

• Physical characterization of S169: a prototypical IR bubble associated with the massive star-forming region IRAS 12326-6245
• TRIGGERED STAR FORMATION AND DUST AROUND MID-INFRARED-IDENTIFIED BUBBLES
• The TOP-SCOPE Survey of PGCCs: PMO and SCUBA-2 Observations of 64 PGCCs in the Second Galactic Quadrant
• Shape analysis of H ii regions – I. Statistical clustering
• New candidate radio supernova remnants detected in the GLEAM survey over 345° <l< 60°, 180° <l< 240°
• MASSIVE STARS IN THE W33 GIANT MOLECULAR COMPLEX
• Ionization-induced star formation – V. Triggering in partially unbound clusters