The Nature of the Variable Infalling Material on the Star Beta Pictoris: Cycle 2 Observations

Details The Nature of the Variable Infalling Material on the Star Beta Pictoris: Cycle 2 Observations The Nature of the Variable Infalling Material on the Star Beta Pictoris: Cycle 2 Observations

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.3482v&link_type=abstract

HST Proposal ID #3482

Computer Science

Hst Proposal Id #3482

Scientific paper

We propose to obtain spectroscopic diagnostics of the gaseous disk observed around the star Beta Pictoris. The high quality data produced by the unprecedented resolution and sensitivity of the GHRS in the UV is needed to answer the questions raised from a large body of observations from the ground and from always very noisy IUE data. Many questions about the intriguing behaviour of this gas are still to be answered quantitatively. Are the strong lines of depleted elements produced by dust grains evaporating near the star ? Where and how are highly ionized species like AlIII and possibly CIV produced ? What mechanism induces the strong variability observed in several UV lines and in the CaII lines ? What is the density inferred from the measurements of the CI multiplets ? Can we confirm the presence of the CO 4th positive system bands marginally detected by their variations ? We have developed complete simulations able to describe most of the observational facts and predict new characteristics of spectral lines in the hypothesis of evaporation of falling cometary like bodies perturbed by the presence of larger bodies. High quality UV observations as proposed here linked to a ground-based CaII survey, will allow to check our hypothesis and will bring new stringent constraints for the description of this probable young planetary system.

Affiliated with

Also associated with

No associations

Rating

The Nature of the Variable Infalling Material on the Star Beta Pictoris: Cycle 2 Observations 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 Nature of the Variable Infalling Material on the Star Beta Pictoris: Cycle 2 Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Nature of the Variable Infalling Material on the Star Beta Pictoris: Cycle 2 Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1206829