Computer Science
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7890r&link_type=abstract
HST Proposal ID #7890
Computer Science
Hst Proposal Id #7890 Cool Stars Low-Mass Stars
Scientific paper
We propose to obtain broadband 2.2 Mum images of the compact cavities illuminated by Herbig-Haro energy sources, and to obtain narrowband H_2 images to study how the HH jets originate at their sources. The sources that drive HH jets are among the youngest stars known, with ages of less than 1-2 * 10^5 yrs. These extremely young stars are deeply embedded, and therefore we will study them indirectly via their associated infrared reflection nebulae. It is not clear if these nebulae outline massive flaring disks, or are holes punched by the jets, or are cavities resulting from the envelope collapse process. The proposed NICMOS images of a statistically significant source sample will be used to determine characteristic features of the cavities at the highest achievable resolution so as to compare with model predictions. In order to interpret such images we need to know the location of the embedded source relative to the infrared reflection nebula far better than IRAS positions allow, so a key element here is that we have detected all the sources with the VLA, and therefore know their positions to a fraction of an arcsecond. The NICMOS images will also help reveal if some of the sources are binaries, as would be statistically expected. Finding such extremely young binaries is a first step towards understanding the origin of binaries and their role in outflow evolution. Finally, comparing the broadband continuum images with the narrowband H_2 images allows us to study the jet origin region at hitherto unprecedented resolution.
No associations
LandOfFree
The Youngest Stars: , Circumstellar Structure, Binarity and Origin of Jets 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 The Youngest Stars: , Circumstellar Structure, Binarity and Origin of Jets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Youngest Stars: , Circumstellar Structure, Binarity and Origin of Jets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-896367