Proper Motions and Variability of HH Objects Near the Orion Nebula

Details Proper Motions and Variability of HH Objects Near the Orion Nebula Proper Motions and Variability of HH Objects Near the Orion Nebula

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8121o&link_type=abstract

HST Proposal ID #8121

Other

Hst Proposal Id #8121 Stellar Ejecta

Scientific paper

The Orion nebula possesses at least three systems of HH objects, each with very different characteristics. No other source shows such a variety of outflow phenomena, and we seek to understand why this is so. An essential parameter in understanding these systems and the individual shocks is their spatial motions. A recent groundbased Fabry-Perot study has provided radial velocities for all of the brightest members, but proper motion information is uncertain and available for only a few. The existence of earlier WFPC2 images presents an opportunity to produce accurate proper motions through repeating those observations in Cycle 8. The proposed observations will clarify how shocks sweep up material in the dense H II and Photodissociation Regions, and pinpoint locations of photometric variability within the shocked cooling zones. The timing for this is optimal since the sample of current proper motions indicates that the 4.7-6.0 year time interval will allow accurate results; the results should be obvious and unambiguous. By rotating the field for one of the pointings we'll be able to obtain the first HST images in O I and S II in one of the richest regions of the nebula. The product of this investigation will be proper motions and temporal variability for all of the HH objects in the region, and an O I and S II survey of an unstudied region.

Affiliated with

Also associated with

No associations

Rating

Proper Motions and Variability of HH Objects Near the Orion Nebula 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 Proper Motions and Variability of HH Objects Near the Orion Nebula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proper Motions and Variability of HH Objects Near the Orion Nebula will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-992529