Observations of infrared echoes around Cassiopeia A with WISE

Details Observations of infrared echoes around Cassiopeia A with WISE Observations of infrared echoes around Cassiopeia A with WISE

May 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012a%26a...541l...3b&link_type=abstract

Astronomy & Astrophysics, Volume 541, id.L3

Astronomy and Astrophysics

Astrophysics

Ism: General, Dust, Extinction, Supernovae: Individual: Cassiopeia A

Scientific paper

Context. Light echoes of supernovae have proven to be a viable tool for characterizing both the supernova explosion mechanism and the surrounding circumstellar and interstellar medium. Aims: We explore new possibilities for identifying infrared echoes with WISE data and extend the area of known echoes around the supernova remnant Cassiopeia A in different illumination conditions. Methods: Preliminary release WISE data around Cassiopeia A is analyzed and compared to Spitzer-MIPS data. While Spitzer-WISE difference images directly show evidence of infrared light echoes, they can also be identified according to their 22/12 μm flux ratio. Results: We find that WISE allows the detection of previously unknown infrared echoes in various illumination conditions. For the first time, infrared echoes at distances greater than 800 pc from a supernova remnant have been found. The 22/12 μm flux ratio criterion can be used as a conceptual factor for identifying infrared echoes around other supernovae as well as providing insights into the dust processing conditions of the interstellar medium.
Table 1 is available in electronic form at http://www.aanda.org

Affiliated with

Also associated with

No associations

Rating

Observations of infrared echoes around Cassiopeia A with WISE does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observations of infrared echoes around Cassiopeia A with WISE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of infrared echoes around Cassiopeia A with WISE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1550671