2004A&A...427..561K

Query : 2004A&A...427..561K

2004A&A...427..561K - Astronomy and Astrophysics, volume 427561-566 (2004/11-4)

Modeling the gas reservoir of circumstellar disks around young G-type stars.

KAMP I. and SAMMAR F.

Abstract (from CDS):

Interpretation of molecular line observations in tenuous circumstellar disks around young G-type stars in terms of a disk mass is difficult without a model that describes the chemical structure of these disks. This paper discusses the chemistry in tenuous disks around young solar-type stars based on disk models that take into account the presence of a stellar chromosphere. The example of the disk around a 70Myr old solar-type star shows that the dissociating radiation from the chromosphere is stronger than the interstellar ultraviolet radiation field up to a distance of ∼400 AU from the star. Similar to other studies in this research field, it is found that, due to photodissociation, the CO-to-H2 ratio is far from the canonical value of 10–4 for molecular clouds. Moreover, the dust-to-gas mass ratio as well as the dust grain size plays an important role for the H2 abundance in these disks.

Abstract Copyright: ∼

Journal keyword(s): stars: chromospheres - stars: circumstellar matter - stars: pre-main sequence - stars: individual: HD 123160

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 HD 123160 * 14 06 12.8537830392 -11 49 57.866749680   10.19 8.65     K5III 29 0

Query : 2004A&A...427..561K

Basic data :
HD 123160 -- Star
Other object types: otypes_help 		* (HD,BD,...), MIR (WISEA,WISE), IR (IRAS,PSCz), NIR (2MASS)
ICRS coord. (ep=J2000) : 		14 06 12.8537830392 -11 49 57.866749680 (Optical) [ 0.0221 0.0181 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		14 03 31.9864544889 -11 35 40.200274033 [ 0.0221 0.0181 90 ]
Gal coord. (ep=J2000) : 		330.3300192409828 +47.0223101682405 [ 0.0221 0.0181 90 ]
Proper motions mas/yr : 		-23.407 -9.948 [0.029 0.023 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -23.19 [0.16] / z(spectroscopic) -0.000077 [0.000001] / cz -23.19 [0.16]
   (Opt) A 2018yCat.1345....0G
Parallaxes (mas): 		1.6761 [0.0249] A 2020yCat.1350....0G
Spectral type: 		K5III C 1999MSS...C05....0H
Fluxes (6) :
B 10.19 [0.04] D 2000A&A...355L..27H
V 8.65 [0.02] D 2000A&A...355L..27H
G 8.029086 [0.002783] C 2020yCat.1350....0G
J 5.81 [0.018] C 2003yCat.2246....0C
H 5.093 [0.042] C 2003yCat.2246....0C
K 4.812 [0.027] C 2003yCat.2246....0C
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Identifiers (18) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 123160 IRAS 14035-1135 SRS 12060 YZC 11 4975
BD-11 3664 2MASS J14061285-1149580 TIC 19922085 Gaia DR2 6304307070431487104
GSC 05557-00320 PPM 228289 TYC 5557-320-1 Gaia DR3 6304307070431487104
HIC 68878 PSCz P14035-1135 WISEA J140612.85-114958.2
HIP 68878 SAO 158350 WISE J140612.83-114958.0

References (29 between 1850 and 2026) (Total 29)
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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Collections of Measurements Description of Measurements

Velocities : 2    Distance : 2    Rot : 2    Plx : 2    PM : 4    SpT : 2   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : HD 123160

Link by name to the catalogue in VizieR :

HD 123160 BD-11 3664 GSC 05557-00320 HIC 68878 HIP 68878
IRAS 14035-1135 2MASS J14061285-1149580 PPM 228289 SAO 158350 TYC 5557-320-1
WISEA J140612.85-114958.2 WISE J140612.83-114958.0 YZC 11 4975 Gaia DR2 6304307070431487104 Gaia DR3 6304307070431487104

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