Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2010-02-09
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
10 pages, 4 figures. Expanded version of conference proceedings contribution for "Reionization to Exoplanets" allowing for a m
Scientific paper
I describe new constraints on the lifetimes and morphologies of transitional protoplanetary disks from observations of 1--10 Myr old stars with the \textit{Spitzer Space Telescope}. New Spitzer results clearly show evidence for two kinds of transitional disks and thus two main disk evolutionary pathways: disks which form an inner hole/gap and clear from the inside out and disks that deplete more homologously. Analyzing the disk populations of 1--10 Myr old clusters such as Taurus, IC 348, NGC 2362, and $\eta$ Cha show that the mean transitional disk lifetime must be an appreciable fraction of the mean protoplanetary disk lifetime: $\approx$ 1 Myr out of 3--5 Myr. The varieties of transitional disk SEDs and correlations with other disk diagnostics are consistent with multiple mechanisms responsible for clearing disks.
No associations
LandOfFree
The Morphologies and Lifetimes of Transitional 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 The Morphologies and Lifetimes of Transitional Protoplanetary Disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Morphologies and Lifetimes of Transitional Protoplanetary Disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-123820