Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0116r&link_type=abstract
American Astronomical Society, HEAD meeting #9, #1.16; Bulletin of the American Astronomical Society, Vol. 38, p.331
Astronomy and Astrophysics
Astronomy
Scientific paper
We present sub-arcsecond imaging in Ne V of N49, the brightest optical SNR in the LMC. Between the ``cool'' optical and ``hot'' X-ray regimes, Ne V emission indicates intermediate temperatures (2--6 E5 K) for which imaging has been extremely limited. We compare the flux in these images to the O VI measured spectrally by FUSE and find dereddened line ratios that are reasonably consistent with our predictions for intermediate velocity shocks. The overall luminosity in Ne V for the entire remnant is 1.2E36 erg s-1, implying an O VI luminosity of 1.5E38 erg s-1. These large radiative losses indicate that this material must have been shocked recently relative to the total lifetime of the remnant. We also explore the complex spatial structure. We find Ne V tracing the O III emission more closely than it does Hα, measure significant shifts ( 0.1 pc) between the peaks of different emission lines, and find two orders of magnitude variations in the flux ratios for different filaments across the remnant. These properties as well as the general filamentary character of the optical emission are suggestive of thermally unstable intermediate velocity shocks.
Rakowski Cara E.
Raymond John C.
Szentgyorgi A. H.
No associations
LandOfFree
Ne V Imaging of LMC SNR N49 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 Ne V Imaging of LMC SNR N49, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ne V Imaging of LMC SNR N49 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1080225