2019ApJ...881...56S

Query : 2019ApJ...881...56S

2019ApJ...881...56S - Astrophys. J., 881, 56-56 (2019/August-2)

The impact of accretion heating and thermal conduction on the dead zone of protoplanetary disks.

SCHOBERT B.N., PEETERS A.G. and RATH F.

Abstract (from CDS):

The paper investigates the influence of accretion heating and turbulent heat conduction on the equilibrium of protoplanetary disks, extending the 2D axisymmetric passive disk model of Flock. The model includes dust sublimation and radiative transfer with the flux-limited diffusion approximation, and predicts the density and temperature profiles as well as the dust-to-gas ratio of the disk. It is shown that the accretion heating can have a large impact: for accretion rates above 5 * 10–8 M☉ yr–1 a zone forms behind the silicate condensation front with sufficiently high temperature to sublimate the dust and form a gaseous cavity. Assuming a Prandtl number ∼0.7, it is furthermore shown that the turbulent heat conduction cannot be neglected in the evaluation of the temperature profile. While the inner rim position is not affected by viscous heating, the dead zone edge shifts radially outward for higher accretion rates.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - conduction - hydrodynamics - methods: numerical - protoplanetary disks - radiative transfer

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CD-40 8434b Pl 14 08 10.1545500744 -41 23 52.573291080           ~ 295 0

Query : 2019ApJ...881...56S

Basic data :
CD-40 8434b -- Extra-solar Planet
Other object types: otypes_help 		Pl (), Pl? (2018ApJ), * (CD)
ICRS coord. (ep=J2000) : 		14 08 10.1545500744 -41 23 52.573291080 (Optical) [ 0.0172 0.0157 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 05 05.7316863096 -41 09 38.061150800 [ 0.0172 0.0157 90 ]
Gal coord. (ep=J2000) : 		318.0621224576488 +19.2084976688999 [ 0.0172 0.0157 90 ]
Proper motions mas/yr : 		-29.697 -24.041 [0.021 0.021 90] A 2020yCat.1350....0G
Parallaxes (mas): 		8.8975 [0.0191] A 2020yCat.1350....0G
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CD-40 8434b PDS 70b

References (295 between 1850 and 2026) (Total 295)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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