Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-11-13
Astrophys.J.693:610-616,2009
Astronomy and Astrophysics
Astrophysics
7 pages, 4 figures, Accepted for publication in the Astrophysical Journa
Scientific paper
10.1088/0004-637X/693/1/610
We present spatially resolved 3 um spectra of Elias 1 obtained with an adaptive optics system. The central part of the disk is almost devoid of PAH emission at 3.3 um; it shows up only at 30 AU and beyond. The PAH emission extends up to 100 AU, at least to the outer boundary of our observation. The diamond emission, in contrast, is more centrally concentrated, with the column density peaked around 30 AU from the star. There are only three Herbig Ae/Be stars known to date that show diamond emission at 3.53 um. Two of them have low-mass companions likely responsible for the large X-ray flares observed toward the Herbig Ae/Be stars. We speculate on the origin of diamonds in circumstellar disks in terms of the graphitic material being transformed into diamond under the irradiation of highly energetic particles.
Andersen Anja C.
Goto Mario
Hayano Yutaka
Henning Th
Jäger Cornelia
No associations
LandOfFree
Spatially Resolved 3 micron Spectroscopy of Elias 1: Origin of Diamonds in Protoplanetary Disks 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 Spatially Resolved 3 micron Spectroscopy of Elias 1: Origin of Diamonds in Protoplanetary Disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatially Resolved 3 micron Spectroscopy of Elias 1: Origin of Diamonds in Protoplanetary Disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-10355