2014ApJ...788...59W


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.22CEST12:23:04

2014ApJ...788...59W - Astrophys. J., 788, 59 (2014/June-2)

A parametric modeling approach to measuring the gas masses of circumstellar disks.

WILLIAMS J.P. and BEST W.M.J.

Abstract (from CDS):

The disks that surround young stars are mostly composed of molecular gas, which is harder to detect and interpret than the accompanying dust. Disk mass measurements have therefore relied on large and uncertain extrapolations from the dust to the gas. We have developed a grid of models to study the dependencies of isotopologue CO line strengths on disk structure and temperature parameters and find that a combination of 13CO and C18O observations provides a robust measure of the gas mass. We apply this technique to Submillimeter Array observations of nine circumstellar disks and published measurements of six well studied disks. We find evidence for selective photodissociation of C18O and determine masses to within a factor of about three. The inferred masses for the nine disks in our survey range from 0.7 to 6 MJup, and all are well below the extrapolation from the interstellar medium gas-to-dust ratio of 100. This is consistent with the low masses of planets found around such stars, and may be due to accretion or photoevaporation of a dust-poor upper atmosphere. However, the masses may be underestimated if there are more efficient CO depletion pathways than those known in molecular clouds and cold cores.

Abstract Copyright:

Journal keyword(s): circumstellar matter - planets and satellites: formation - protoplanetary disks

VizieR on-line data: <Available at CDS (J/ApJ/788/59): table3.dat>

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NGC 1333 SFR 03 28 55 +31 22.2   10.9       ~ 1181 1
2 V* CY Tau TT* 04 17 33.7281514373 +28 20 46.809969664 14.52 14.68 13.40 12.59   M1.5 221 0
3 3C 111 Sy1 04 18 21.2773655604 +38 01 35.801523843   19.75 18.05     ~ 839 1
4 V* BP Tau TT* 04 19 15.8342975037 +29 06 26.929456808   13.13 12.12 11.89   K5/7Ve 583 0
5 V* IQ Tau TT* 04 29 51.5569553814 +26 06 44.854858369 15.43   13.80 12.28 11.11 M0.5 191 0
6 Haro 6-13 TT* 04 32 15.4177438039 +24 28 59.580866027 19.22   17.7     M0 175 1
7 V* GG Tau TT* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 615 1
8 V* DL Tau TT* 04 33 39.0766866461 +25 20 38.097973550 14.04 14.59 13.40 11.85 10.89 K7Ve 273 0
9 V* DM Tau TT* 04 33 48.7335659850 +18 10 09.974471722 14.30 14.82 14.00     M2Ve 485 0
10 V* CI Tau TT* 04 33 52.0144455735 +22 50 30.093741884 14.97 15.09 13.80     K4IVe 243 0
11 V* AA Tau TT* 04 34 55.4222683130 +24 28 53.038273587 13.14 13.34 12.20     K5Ve 599 0
12 V* DO Tau TT* 04 38 28.5882167490 +26 10 49.472067634 12.78 13.44 12.30 13.01   M1Ve 301 1
13 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3310 0
14 V* DQ Tau TT* 04 46 53.0577037389 +17 00 00.135310040 14.56 13.67 12.00 13.21   M1Ve 278 0
15 QSO B0507+179 QSO 05 10 02.36912982 +18 00 41.5816534   20.0 19.0 19.09   ~ 276 1
16 V* CQ Tau Ae* 05 35 58.4671238887 +24 44 54.086375712 11.290 10.780 10.000   8.33 F5IVe 245 0
17 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1597 1
18 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1443 1
19 THA 15-12 TT* 15 56 09.17658 -37 56 06.1193   10.7       M0e 214 0
20 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2930 0
21 HD 163296 Ae* 17 56 21.2882188601 -21 57 21.872343282 7.00 6.93 6.85 6.86 6.67 A1Vep 729 0
22 HD 319139 BY* 18 14 10.4818974563 -32 47 34.516106830   11.47 10.68   9.11 K5+K7 271 0

    Equat.    Gal    SGal    Ecl

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2019.10.22-12:23:04

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