Supernova remnant W49B and its environment

Abstract

We study Gamma-ray supernova remnant W49B and its environment using recent radio and infrared data. {\it Spitzer} IRS low resolution data of W49B shows shocked excitation lines of H${}_2$ (0,0) S(0)-S(7) from the SNR-molecular cloud interaction. The H${}_2$ gas is composed of two components with temperature of $\sim$260 K and $\sim$1060 K respectively. Various spectral lines from atomic and ionic particles are detected towards W49B. We suggest the ionic phase has an electron density of $\sim$500 cm${}^{-3}$ and a temperature of $\sim$$10^4$ K by the spectral line diagnoses. The mid- and far-infrared data from {\it MSX}, {\it Spitzer} and {\it Herschel} reveals a 151 $\pm$ 20 K hot dust component with a mass of 7.5 $\pm$ 6.6 $\times$ ${10}^{-4} {\Msol}$ and a 45 $\pm$ 4 K warm dust component with a mass of 6.4 $\pm$ 3.2 ${\Msol}$. The hot dust is likely from materials swept up by the shock of W49B. The warm dust may possibly originate from the evaporation of clouds interacting with W49B. We build the HI absorption spectra of W49B and nearby four {\HII} regions (W49A, G42.90+0.58, G42.43-0.26 and G43.19-0.53), and study the relation between W49B and the surrounding molecular clouds by employing the 2.12 $\mu$m infrared and CO data. We therefore obtain a kinematic distance of $\sim$10 kpc for W49B and suggest that the remnant is likely associated with the CO cloud at about 40 km s${}^{-1}$.

arXiv comment11 pages, 13 figures, accepted for publication in ApJ

References in corpus (32)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Interstellar Dust Grains
• The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
• The Infrared Spectrograph on the Spitzer Space Telescope
• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• IRIS: A new generation of IRAS maps
• The VLA Galactic Plane Survey
• A Spitzer Space Telescope Infrared Survey of Supernova Remnants in the Inner Galaxy
• Toward Understanding the Cosmic-ray Acceleration at Young Supernova Remnants Interacting with Interstellar Clouds: Possible Applications to RX J1713.7-3946
• The Origin of Cosmic Dust
• The data reduction pipeline for the Hi-GAL survey
• Suzaku Discovery of the Strong Radiative Recombination Continuum of Iron from the Supernova Remnant W49B
• Fermi-LAT Study of Gamma-ray Emission in the Direction of Supernova Remnant W49B
• The X-ray Line Emission from the Supernova Remnant W49B
• The Galactic Supernova Remnant W49B Likely Originates from a Jet-Driven, Core-Collapse Explosion
• A Near-Infrared and X-ray Study of W49B: A Wind Cavity Explosion
• Spitzer spectral line mapping of supernova remnants: I. Basic data and principal component analysis
• The Distance and Age of the SNR Kes 73 and AXP 1E 1841-045
• UWISH2 -- The UKIRT Widefield Infrared Survey for H2
• The X-ray emission of the supernova remnant W49B observed with XMM-Newton
• Dust processing in Supernova Remnants: Spitzer MIPS SED and IRS Observations
• Spitzer Observations of Molecular Hydrogen in Interacting Supernova Remnants
• VLA HI Zeeman Observations Toward the W49 Complex
• Unveiling the spatial structure of the overionized plasma in the supernova remnant W49B
• The Mipsgal View of Supernova Remnants in the Galactic Plane
• Radio and X-ray images of SNR G18.8+0.3 interacting with molecular clouds
• Tools for Dissecting Supernova Remnants Observed with Chandra: Methods and Application to the Galactic Remnant W49B
• Spatially-resolved Thermal Continuum Absorption against the Supernova Remnant W49B
• Unraveling the Origin of Overionized Plasma in the Galactic Supernova Remnant W49B
• Spatial identification of the overionized plasma in W49B
• Cr-K Emission Line as a Constraint on the Progenitor Properties of Supernova Remnants
• Far-Infrared Luminous Supernova Remnant Kes 17

Cited by in corpus (33)

• Radio emission from Supernova Remnants
• The gas-to-extinction ratio and the gas distribution in the Galaxy
• Constraining the Braking Indices of Magnetars
• The Einstein@Home Gamma-ray Pulsar Survey. I. Search Methods, Sensitivity and Discovery of New Young Gamma-ray Pulsars
• Asymmetric Type-Ia supernova origin of W49B as revealed from spatially resolved X-ray spectroscopic study
• LEGO II: A 3 mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way Disc
• The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT
• Distances of Galactic Supernova Remnants Using Red Clump Stars
• Revisiting the dust destruction efficiency of supernovae
• What planetary nebulae can tell us about jets in core collapse supernovae
• ALMA CO Observations of the Mixed-Morphology Supernova Remnant W49B: Efficient Production of Recombining Plasma and Hadronic Gamma-rays via Shock-Cloud Interactions
• Chemical abundances in Sgr A East: evidence for a Type Iax supernova remnant
• A Complete Catalogue of Dusty Supernova Remnants
• Near-infrared [Fe II] and H${}_2$ Emission-line Study of Galactic Supernova Remnants in the First Quadrant
• Modified Fermi Energy of Electrons in a Superhigh Magnetic Field
• High-resolution Near-infrared Spectroscopic Study of Galactic Supernova Remnants. I. Kinematic Distances
• Survey of Ionized Gas of the Galaxy, Made with the Arecibo telescope (SIGGMA): Inner Galaxy Data Release
• NuSTAR Detection of Nonthermal Bremsstrahlung from the Supernova Remnant W49B
• Thermal radio absorption as a tracer of the interaction of SNRs with their environments
• Time evolution of broadband non-thermal emission from supernova remnants in different circumstellar environments
• Analysis of XMM-Newton Observations of Supernova Remnant W49B and Clues to the Progenitor
• Unusually high HCO+/CO ratios in and outside supernova remnant W49B
• Atlas of CO-Line Shells and Cavities around Galactic Supernova Remnants with FUGIN
• An XMM-Newton X-ray View of Supernova Remnant W49B: Revisiting its Recombining Plasmas and Progenitor Type
• Can the Fe K-alpha Line Reliably Predict Supernova Remnant Progenitors?
• Properties of shocked dust grains in supernova remnants
• Spatially-Resolved Study of Recombining Plasma in W49B Using XMM-Newton
• Long-term evolution of non-thermal emission from Type Ia and core-collapse supernova remnants in a diversified circumstellar medium
• QUIJOTE scientific results -- V. The microwave intensity and polarisation spectra of the Galactic regions W49, W51 and IC443
• The kinematic distances of SNR G16.7+0.1 and G15.9+0.2 by analyzing HI absorption spectra
• An Exploration of X-ray Supernova Remnants in the Milky Way and Nearby Galaxies
• Long-term evolution of a supernova remnant hosting a double neutron star binary
• Theoretical $\Sigma$-$D$ Relations for Shell-Type Galactic Supernova Remnants