Dust in the Tycho, Kepler and Crab supernova remnants

Details Dust in the Tycho, Kepler and Crab supernova remnants Dust in the Tycho, Kepler and Crab supernova remnants

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...373..281d&link_type=abstract

Astronomy and Astrophysics, v.373, p.281-291 (2001)

Astronomy and Astrophysics

Astrophysics

47

Ism: Supernova Remnants, Individual Object: Kepler, Crab, Tycho

Scientific paper

SuperNova Remnants (SNR) have been extensively studied in radio, X-rays and optical, but barely in the InfraRed (IR). From IRAS observations, SNR are known to be IR emitters, but the origin of the emission is difficult to assess because of the limited angular and spectral resolution of IRAS observations. ISO follow-up observations of the Cassiopeia-A SNR have shown that the mid-IR radiation from this remnant was dominated by thermal emission from silicate condensates made from SN material. These condensates constitute a probe which can provide unique information about element mixing inside a SN. In this paper, we present ISOCAM observations of the three other young SNR's known in our galaxy: the Kepler SNR, the Tycho SNR and the Crab Nebula. The emission observed from the Kepler SNR is dominated by dust thermal emission. The dust at the origin of the IR emission is circumstellar, not from SN condensates. ``Astronomical'' silicates, collisionally heated to a temperature of 107 K, can account for both the mid-IR ISO data and the IRAS data. The IR emission from Tycho is probably also emitted by circumstellar or interstellar dust. In order to reproduce both the mid-IR ISO data and the IRAS data, a model with two dust components, one at a temperature of 107 K and the other at 55 K, is needed. The mid-IR emission from the Crab is dominated by synchrotron radiation; no dust is detected. Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, The Netherlands and the UK) and with the participation of ISAS and NASA, and on observations obtained at the ESO LaSilla Observatory, Prg 59.A-9905.

Affiliated with

Also associated with

No associations

Rating

Dust in the Tycho, Kepler and Crab supernova remnants 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 Dust in the Tycho, Kepler and Crab supernova remnants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust in the Tycho, Kepler and Crab supernova remnants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1772913