Infrared dust bubble CS51 and its interaction with the surrounding interstellar medium
arXiv:1709.02539 · doi:10.1093/mnras/stx2290
Abstract
A multiwavelength investigation of the southern infrared dust bubble CS51 is presented in this paper. We probe the associated ionized, cold dust, molecular and stellar components. Radio continuum emission mapped at 610 and 1300 MHz, using the Giant Metrewave Radio Telescope, India, reveal the presence of three compact emission components (A, B, and C) apart from large-scale diffuse emission within the bubble interior. Radio spectral index map show the coexistence of thermal and non-thermal emission components. Modified blackbody fits to the thermal dust emission using Herschel PACS and SPIRE data is performed to generate dust temperature and column density maps. We identify five dust clumps associated with CS51 with masses and radius in the range 810 - 4600 M{\sun} and 1.0 - 1.9 pc, respectively. We further construct the column density probability distribution functions of the surrounding cold dust which display the impact of ionization feedback from high-mass stars. The estimated dynamical and fragmentation timescales indicate the possibility of collect and collapse mechanism in play at the bubble border. Molecular line emission from the MALT90 survey is used to understand the nature of two clumps which show signatures of expansion of CS51.
21 pages, 11 figures, accepted for publication in MNRAS
References in corpus (23)
- MAMBO Mapping of Spitzer c2d Small Clouds and Cores
- Structural Analysis of Molecular Clouds: Dendrograms
- UBVJHK synthetic photometry of Galactic O stars
- What determines the density structure of molecular clouds ? A case study of Orion B with Herschel
- Kinematic Distances to Molecular Clouds identified in the Galactic Ring Survey
- IR Dust Bubbles: Probing the Detailed Structure and Young Massive Stellar Populations of Galactic HII Regions
- The Electron Temperature Gradient in the Galactic Disk
- A 24 Micron Point Source Catalog of the Galactic Plane from Spitzer/MIPSGAL
- Understanding star formation in molecular clouds I. Effects of line-of-sight contamination on the column density structure
- Triggered star formation on the borders of the Galactic HII region RCW 82
- GMRT observations of X-shaped radio sources
- G0.253+0.016: A centrally condensed, high-mass protocluster
- Weak and Compact Radio Emission in Early High-Mass Star Forming Regions: I. VLA Observations
- A feedback-driven bubble G24.136+00.436: a possible site of triggered star formation
- Study of morphology and stellar content of the Galactic HII region IRAS 16148-5011
- Radiation-pressure-driven dust waves inside bursting interstellar bubbles
- The infrared dust bubble N22: an expanding HII region and the star formation around it
- A tale of two cores: Triggered massive star formation in the bright-rimmed cloud SFO 75
- A multiwavelength study of the massive star forming region IRAS 06055+2039 (RAFGL 5179)
- Star formation around mid-infrared bubble N37: Evidence of cloud-cloud collision
- Star forming activity in the H II regions associated with IRAS 17160-3707 complex
- Chemical evolution of Red MSX Sources in the southern sky
- Infrared study of the Southern Galactic star forming region associated with IRAS 14416-5937