Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust

Details Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003sci...300..105m&link_type=abstract

Science, Volume 300, Issue 5616, pp. 105-108 (2003).

Astronomy and Astrophysics

Astronomy

166

Scientific paper

We have identified six circumstellar silicate grains within interplanetary dust particles (IDPs). Their extrasolar origins are demonstrated by their extremely anomalous oxygen isotopic compositions. Three 17O-rich grains appear to originate from red giant or asymptotic giant branch stars. One 16O-rich grain may be from a metal-poor star. Two 16O-poor grains have unknown stellar sources. One of the grains is forsterite, and two are amorphous silicate ``GEMS'' (glass with embedded metal and sulfides), which is consistent with astronomical identifications of crystalline and amorphous silicates in the outflows of evolved stars. These observations suggest cometary origins of these IDPs and underscore the perplexing absence of silicates among circumstellar dust grains from meteorites.

Affiliated with

Also associated with

No associations

Rating

Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust 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 Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1326324