2016ApJ...831..167M


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET01:25:55

2016ApJ...831..167M - Astrophys. J., 831, 167-167 (2016/November-2)

Mass measurements in protoplanetary disks from hydrogen deuteride.

McCLURE M.K., BERGIN E.A., CLEEVES L.I., VAN DISHOECK E.F., BLAKE G.A., EVANS II N.J., GREEN J.D., HENNING T., OBERG K.I., PONTOPPIDAN K.M. and SALYK C.

Abstract (from CDS):

The total gas mass of a protoplanetary disk is a fundamental, but poorly determined, quantity. A new technique has been demonstrated to assess directly the bulk molecular gas reservoir of molecular hydrogen using the HD J = 1-0 line at 112 µm. In this work we present a Herschel Space Observatory10 survey of six additional T Tauri disks in the HD line. Line emission is detected at >3σ significance in two cases: DM Tau and GM Aur. For the other four disks, we establish upper limits to the line flux. Using detailed disk structure and ray-tracing models, we calculate the temperature structure and dust mass from modeling the observed spectral energy distributions, and we include the effect of UV gas heating to determine the amount of gas required to fit the HD line. The ranges of gas masses are 1.0-4.7 x 10–2 for DM Tau and 2.5-20.4 x 10–2 for GM Aur. These values are larger than those found using CO for GM Aur, while the CO-derived gas mass for DM Tau is consistent with the lower end of our mass range. This suggests a CO chemical depletion from the gas phase of up to a factor of five for DM Tau and up to two orders of magnitude for GM Aur. We discuss how future analysis can narrow the mass ranges further.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): astrobiology - protoplanetary disks - radiative transfer - radiative transfer

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* FZ Tau Or* 04 32 31.7629319321 +24 20 03.057541003 16.15     15.04   M0 124 0
2 V* DM Tau Or* 04 33 48.7335659850 +18 10 09.974471722 14.30 14.82 14.00     M2Ve 536 0
3 V* AA Tau Or* 04 34 55.4222683130 +24 28 53.038273587 13.14 13.34 12.20     K5Ve 646 0
4 EM* LkCa 15 Or* 04 39 17.7912813350 +22 21 03.387667491   13.01 12.03 11.61   K5:Ve 580 1
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3650 0
6 V* GM Aur Or* 04 55 10.9813656049 +30 21 59.375978047 14.59 14.22 13.10     K3Ve 566 0
7 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1599 1
8 V* VZ Cha Or* 11 09 23.7736314968 -76 23 20.855918834   13.82 12.94   12.14 K7e 128 0

    Equat.    Gal    SGal    Ecl

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2021.03.06-01:25:55

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