Other
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009noao.prop..407l&link_type=abstract
NOAO Proposal ID #2009B-0407
Other
Scientific paper
Much of the ejecta in young SNRs is normally invisible because it has not been shocked, and is therefore cold, producing no optical or X- ray emission. For a complete inventory of the SN ejecta, one needs to somehow probe this cold material, and we seek to do so through UV absorption spectroscopy. The COS spectrograph, soon to be installed on HST, will be an ideal instrument for this purpose, provided suitable UV sources, ``lightbulbs," can be identified behind SNRs. Here we propose to identify UV lightbulbs behind the Tycho (SN 1572) and 3C58 (SN 1181) remnants by obtaining accurate spectral types, and therefore distances, for stars bright enough to observe in the UV with HST/COS. Distance is all that we need to find, because the UV brightness of candidate stars (or other objects) has already been measured by the optical monitor on XMM. Through spectroscopy from the 2.1m we will obtain spectra to identify the best candidate lightbulbs from 60 objects (selected from several hundred) that appear within the (projected) area of Tycho and 3C58. If we are successful, this study will not only lead to a better understanding of two important SNRs, but also to an efficient method for probing ejecta in other Galactic SNRs.
Long Knox S.
Winkler Frank P.
No associations
LandOfFree
UV Lightbulbs behind Young 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 UV Lightbulbs behind Young Supernova Remnants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UV Lightbulbs behind Young Supernova Remnants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1299967