Physics
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop..350s&link_type=abstract
NOAO Proposal ID #1999A-0350
Physics
Scientific paper
We propose to undertake a detailed study of the supernova remnant RCW 86 and its newly discovered Balmer-dominated filaments, involving low-resolution, moderate-resolution and high-resolution spectroscopic observations of both radiative and Balmer-dominated filaments. These observations provide estimates of the reddening, shock velocity and angle to the line of sight, and insights into the physics of Balmer- dominated shocks. In addition, we will search for possible changes of electron-ion equilibration around the remnant, which may be related to the angle the shocks make with respect to the ambient magnetic field. This spectroscopic dataset will be combined with the optical, X-ray (ROSAT PSPC and HRI), and radio data we have in hand. Our multiwavelength study will provide a better overall understanding of the state of the remnant and its history (as the possible remnant of SN 185 A.D.), as well as the physics of the shocks which define its periphery. This is a resubmission of last year's proposal, for which we were assigned time but lost most of the two runs due to bad weather.
Ghavamian Parviz
Hartigan Pat
Laming Martin
Long Knox S.
Raymond John
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