Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..525n&link_type=abstract
Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 525-526
Astronomy and Astrophysics
Astrophysics
1
Protoplanetary Systems, Circumstellar Gas, A Stars, Ca Ii
Scientific paper
We report on our search for possible planetary system candidates in a volume-limited sample of 62 nearby A stars. Since the evolutionary lifetimes of A stars (≤ 109 yrs) roughly correspond to the era of planet formation and subsequent “heavy bombardment” in our solar system, our study could provide valuable insight into the origin of our own Solar System. From our ground-based visual and IUE high-resolution spectroscopy of all the northern nearby A stars, we have identified at least 12 stars with circumstellar gas. Combining these results with our previous IRAS survey we are probing the link between stars with circumstellar gas and those showing circumstellar dust disks. Our aim is not just to identify stars with gas, or stars with both gas and dust, but to identify systems with dynamic spectral activity similar toβ Pic, a well known proto-planetary system candidate. By measuring the gas dynamics in the disks of theseβ Pic-like stars, we can begin to study the physics of accretion disks of young evolving systems.
Cheng Kwang-Ping
Neff James E.
No associations
LandOfFree
A Search for Planetary System Candidates 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 A Search for Planetary System Candidates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Planetary System Candidates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1630416