SIMBAD references

2018ApJ...863...13G - Astrophys. J., 863, 13-13 (2018/August-2)

Herschel observations of protoplanetary disks in Lynds 1641.

GRANT S.L., ESPAILLAT C.C., MEGEATH S.T., CALVET N., FISCHER W.J., MILLER C.J., KIM K.H., STUTZ A.M., RIBAS A. and ROBINSON C.E.

Abstract (from CDS):

We analyze Herschel Space Observatory observations of 104 young stellar objects with protoplanetary disks in the ∼1.5 Myr star-forming region Lynds 1641 (L1641) within the Orion A Molecular Cloud. We present spectral energy distributions from the optical to the far-infrared including new photometry from the Herschel Photodetector Array Camera and Spectrometer at 70 µm. Our sample, taken as part of the Herschel Orion Protostar Survey, contains 24 transitional disks, 8 of which we identify for the first time in this work. We analyze the full disks (FDs) with irradiated accretion disk models to infer dust settling properties. Using forward modeling to reproduce the observed nKS-[70]_ index for the FD sample, we find the observed disk indices are consistent with models that have depletion of dust in the upper layers of the disk relative to the midplane, indicating significant dust settling. We perform the same analysis on FDs in Taurus with Herschel data and find that Taurus is slightly more evolved, although both samples show signs of dust settling. These results add to the growing literature that significant dust evolution can occur in disks by ∼1.5 Myr.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - circumstellar matter - infrared: stars - protoplanetary disks

VizieR on-line data: <Available at CDS (J/ApJ/863/13): table1.dat table2.dat table3.dat table4.dat table5.dat table6.dat table7.dat table8.dat>

Simbad objects: 178

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2019.12.12-02:40:06

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