The Interaction of Supernova Remnant G357.7+0.3 with the Interstellar Medium

Abstract

The supernova remnant (SNR) G357.7+0.3 appears to have caused considerable shredding of the local interstellar medium (ISM), leading to the formation of multiple cloud fragments having bright rims and cometary structures. We investigate five of these regions using mid-infrared (MIR) imaging and photometry deriving from the Spitzer Space Telescope (SST), as well as photometry deriving from the 2MASS near-infrared all sky survey, the Mid-Course Science Experiment (MSX), and the Multiband Imaging Photometer for Spitzer (MIPSGAL) survey of the Galactic plane. It is noted that two of the rims show evidence for emission by shock excited H2 transitions, whilst the centres of the clouds also show evidence for dark extinction cores, observed in silhouette against the bright emission rims. Levels of extinction for these cores are determined to be of order AV ~ 17-26 mag, whilst densities n(HI) are of order ~ 10^4 cm^(-3), and masses in the region of ~40-100 Msun. It is shown that the wavelength dependence of extinction is probably similar to that of Cardelli et al. and Martin & Whittet, but differs from the MIR extinction trends of Indebetouw et al. The distributions of Class I young stellar objects (YSOs) implies that many of them are physically associated with the clouds, and were likely formed as a result of interaction between the clouds and SN winds. A determination of the spectral energy distributions (SEDs) of these stars, together with 2-D radiative transfer modelling of their continua is used to place constraints upon their properties.

arXiv commentThe paper contains 18 figures and 2 tables

References in corpus (21)

• The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• GLIMPSE: I. A SIRTF Legacy Project to Map the Inner Galaxy
• Interpreting Spectral Energy Distributions from Young Stellar Objects. II. Fitting observed SEDs using a large grid of pre-computed models
• The Wavelength Dependence of Interstellar Extinction from 1.25 to 8.0 microns Using GLIMPSE Data
• Interpreting Spectral Energy Distributions from Young Stellar Objects. I. A grid of 200,000 YSO model SEDs
• A Spitzer Space Telescope Infrared Survey of Supernova Remnants in the Inner Galaxy
• Shocked Molecular Gas in the Supernova Remnants W 28 and W 44: Near-infrared and millimeter-wave observations
• On the Hydrodynamic Interaction of Shock Waves with Interstellar Clouds. II. The Effect of Smooth Cloud Boundaries on Cloud Destruction and Cloud Turbulence
• Search for massive protostellar candidates in the southern hemisphere: I. Association with dense gas
• Excitation and Disruption of a Giant Molecular Cloud by the Supernova Remnant 3C391
• Protostars in the Elephant Trunk Nebula
• The 24-Micron View of Embedded Star Formation in NGC 7129
• Three New Supernova Remnant OH Masers Near the Galactic Center: Evidence for Large Scale Maser Emission from Supernova Remnants
• Simultaneous Triggered Collapse of the Presolar Dense Cloud Core and Injection of Short-Lived Radioisotopes by a Supernova Shock Wave
• Ambient Interstellar Pressure and Superbubble Evolution
• Spectacular Spitzer images of the Trifid Nebula: Protostars in a young, massive-star-forming region
• Molecular and Ionic shocks in the Supernova Remnant 3C391
• Star formation triggered by SN explosions: an application to the stellar association of $\beta$ Pictoris
• Wind-Swept Clouds and Possible Triggered Star-Formation associated with the Supernova Remnant G357.7+0.3
• The nature of G52.381-0.849 and G56.240-0.345: young stellar objects associated with extended mid-infrared emission?

Cited by in corpus (3)

• The XMM-Newton view of the central degrees of the Milky Way
• A Complete Catalogue of Dusty Supernova Remnants
• Discovery of Broad Molecular lines and of Shocked Molecular Hydrogen from the Supernova Remnant G357.7+0.3: HHSMT, APEX, Spitzer and SOFIA Observations