* Astronomy

Members Login
Post Info TOPIC: SNR 1E102.2-7219


L

Posts: 131433
Date:
RE: SNR 1E102.2-7219
Permalink  
 


New Supernova Image Reveals Third Dimension

This image of a supernova remnant is the result of the combined efforts of NASAs Chandra X-Ray Observatory and the Hubble Space Telescope.

Read more

__________________


L

Posts: 131433
Date:
Permalink  
 



__________________


L

Posts: 131433
Date:
1E0102.2-7129
Permalink  
 


Adding a New Dimension to an Old Explosion
NASA's Chandra X-ray Observatory: Officially known as 1E0102.2-7129, a supernova remnant in the Small Magellanic Cloud.

Read more

__________________


L

Posts: 131433
Date:
SNR 1E102.2-7219
Permalink  
 


Title: Dust Formation Observed in Young Supernova Remnants with Spitzer
Authors: J. Rho (SSC/Caltech), W. T. Reach (Planck/Caltech), A. Tappe (CFA/Harvard), L. Rudnick (UMN), T. Kozasa (Hakkaido U.), U. Hwang (GSFC/NASA), M. Andersen (SSC/Caltech), H. Gomez (Cardiff), T. DeLaney (MIT), L. Dunne (U. Nottingham), J. Slavin (CFA/Harvard)

We present dust features and masses observed in young supernova remnants (SNRs) with Spitzer IRS mapping and staring observations of four youngest supernova remnants: SNR 1E102.2-7219 (E0102) in the SMC, Cas A and G11.2-0.3 in our Galaxy, and N132D in the LMC. The spectral mapping data revealed a number of dust features which include 21 micron-peak dust and featureless dust in Cas A and 18-micron peak dust in E0102 and N132D. The 18 micron-peak feature is fitted by a mix of MgSiO_3 and solid Si dust grains, while the 21-micron peak dust is by a mix of silicates and FeO; we also explore dust fitting using Continuous Distribution of Ellipsoid grain models. We report detection of CO fundamental band from Cas A in near-infrared. We review dust features observed and identified in other SNRs. The dust emission is spatially correlated with the ejecta emission, showing dust is formed in SN ejecta. The spectra of E0102 show rich gas lines from ejecta including strong ejecta lines of Ne and O, including two [Ne III] lines and two [Ne V] lines which allow us to diagnostic density and temperature of the ejecta and measure the ejecta masses. E0102 and N132D show weak or lacking Ar, Si, and Fe ejecta, whereas the young Galactic SNR Cas A show strong Ar, Si, and S and weak Fe. We discuss compositions and masses of dust and association with those of ejecta and finally, dust contribution from SNe to early Universe.

Read more (1345kb, PDF)

__________________
Page 1 of 1  sorted by
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard