Dust Grain Growth of the Earliest Young Stellar Objects

Details Dust Grain Growth of the Earliest Young Stellar Objects Dust Grain Growth of the Earliest Young Stellar Objects

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341318k&link_type=abstract

American Astronomical Society, AAS Meeting #213, #413.18; Bulletin of the American Astronomical Society, Vol. 41, p.223

Astronomy and Astrophysics

Astronomy

Scientific paper

We present dust opacity spectral indexes (β) of three Class 0 sources, L1448 IRS 2, L1448 IRS 3, and L1157, which have been obtained using the Combined Array for Research in Millimeter-wave Astronomy (CARMA) continuum observations at λ = 1.3 mm and 2.7 mm. The unprecedented compact configuration and image fidelity of CARMA allow the better detection of dust continuum emission of Class 0 sources, with a less serious missing flux problem that is normally associated with interferometry. Through visibility-modeling at both λ = 1.3 mm and 2.7 mm simultaneously, as well as imaging and visibility-comparison, we show that β of the three Class 0 sources are around or smaller than 1. It indicates that dust grains have already grown during or before the Class 0 stage. In addition, we find a radial dependence of β, which implies faster grain growth in the denser central regions or dust segregation. Density distributions of the Class 0 sources are also addressed by visibility-modeling.

Affiliated with

Also associated with

No associations

Rating

Dust Grain Growth of the Earliest Young Stellar Objects 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 Dust Grain Growth of the Earliest Young Stellar Objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust Grain Growth of the Earliest Young Stellar Objects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1701938