Spitzer Detections of Disks around Very Low-Mass Stars in Taurus

Details Spitzer Detections of Disks around Very Low-Mass Stars in Taurus Spitzer Detections of Disks around Very Low-Mass Stars in Taurus

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1212f&link_type=abstract

American Astronomical Society, AAS Meeting #211, #12.12; Bulletin of the American Astronomical Society, Vol. 39, p.752

Astronomy and Astrophysics

Astronomy

Scientific paper

The Spitzer Taurus Survey revealed infrared excesses from circumstellar disks around lower-mass objects in longer wavelengths. We present the spectral energy distributions (SEDs) of eight very low-mass stars (VLMS; 0.1 M&sun;) measured up to 70 micron to better constrain the outer disk structure. The SEDs and the detection rate of about 30% at 70 micron suggest that VLMS retaining circumstellar disks larger than 10 AU are not rare, which implies that dynamical ejection may not be a dominant formation mechanism of VLMS in Taurus. The infrared SEDs show a variety of shapes including the one with the infrared excess only at wavelengths longer than 8 micron (a transitional disk). The distribution in the color-color diagrams also did not show a significant difference from Taurus T Tauri stars at least in our very limited sample, in which the large scatter of the distribution may arise from the disk geometry, small age difference (evolutionary effect), or possible multiplicity. Our finding of one transitional disk around the VLMS suggests that the evolutionary process such as inner disk clearing takes place in a similar time scale to T Tauri stars.

Affiliated with

Also associated with

No associations

Rating

Spitzer Detections of Disks around Very Low-Mass Stars in Taurus 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 Spitzer Detections of Disks around Very Low-Mass Stars in Taurus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spitzer Detections of Disks around Very Low-Mass Stars in Taurus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1474811