Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000isass..14...19h&link_type=abstract
The Institute of Space and Astronautical Science Report SP No. 14, p. 19-25.
Astronomy and Astrophysics
Astronomy
1
Vega-Like Stars, Circumstellar Dust Ring, Astro-F/Fis All Sky Survey, Infrared, Zodiacal Dust
Scientific paper
Possible observations of Vega-like stars by the ASTRO-F and the HII/L2 3.5m space telescope are proposed. Vega-like stars are main sequence stars with mid-infrared and/or far-infrared excess. A few of these stars have been observed precisely at various wavelengths and it was found out that they tend to have hot (~300K) circumstellar dust like the zodiacal dust in our solar system and warm (~50K) dust ring around 30-50 AU from the central star. In spite of these discoveries, one question still remains; How many Vega-like stars are there? Mid- and far-infrared surveys by the ASTRO-F and the HII/L2 telescope will be the best ones to get the answer to this question. The ASTRO-F/FIS survey could detect `alpha Lyr' located at a distance of <50pc, within which roughly 150 of A-type main sequence stars exist. The HII/L2 3.5m telescope survey has the capability to detect much farther, up to 100pc. Thus, the total number of candidates will increase to as many as ~1000.
Hirao Takanori
Matsuo Hiroshi
Matsuura Shuji
Murakami Hitoshi
Noda Manabu
No associations
LandOfFree
Search for Exozodiacal Dust: Are Vega-like Stars Common? 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 Search for Exozodiacal Dust: Are Vega-like Stars Common?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for Exozodiacal Dust: Are Vega-like Stars Common? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1046247