2007ApJ...656L..93A

Query : 2007ApJ...656L..93A

2007ApJ...656L..93A - Astrophys. J., 656, L93-L96 (2007/February-3)

Cold CO gas in protoplanetary disks.

AIKAWA Y.

Abstract (from CDS):

In a disk around DM Tau, previous observation of ¹³CO (J=2-1 and 1-0 transitions) derived a ¹³CO gas temperature of ∼13-20 K, which is lower than the sublimation temperature of CO (20 K). We argue that the existence of such cold CO can be explained by a vertical mixing of disk material. As the gas is transported from a warm layer to a cold layer, CO is depleted onto dust grains with a timescale of ∼10³ yr. Because of the steep temperature gradient in the vertical direction, an observable amount of CO is still in the gas phase when the fluid parcel reaches the layer of ∼13 K. Apparent temperature of CO decreases as the maximum grain size increases from micron to millimeter size.

Abstract Copyright: ∼

Journal keyword(s): ISM: Molecules - Stars: Planetary Systems: Protoplanetary Disks - Stars: Pre-Main-Sequence

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	V* DM Tau	Or*	04 33 48.7336763736	+18 10 09.973460280	14.30	14.82	14.00			M2Ve	731	0

Query : 2007ApJ...656L..93A

Basic data :

V* DM Tau -- Orion Variable

* (2019AJ,UCAC2,...), Y*O (2010ApJS), IR (IRAS,PSCz), TT* (1999AJ), Or* (2017ARep), Y*? (2018A&A), Em* (HBC), V* (V*), EmO (MHA), NIR (2MASS), MIR (WISE)

04 33 48.7336763736 +18 10 09.973460280 (Optical) [ 0.0180 0.0096 90 ] A 2020yCat.1350....0G

04 30 54.6707882728 +18 03 56.915537593 [ 0.0180 0.0096 90 ]

179.2557188297592 -19.6110017435240 [ 0.0180 0.0096 90 ]

11.691 -18.292 [0.023 0.015 90] A 2020yCat.1350....0G

V(km/s) 18.3115 [0.0538] / z(spectroscopic) 0.000061 [0.000000] / cz 18.31 [0.05] (NIR) A 2022ApJS..259...35A

6.9421 [0.0217] A 2020yCat.1350....0G

M2Ve C 1977ApJ...214..747H

U 14.30 [~] C 2002yCat.2237....0D

B 14.82 [~] C 2002yCat.2237....0D

V 14.00 [~] C 2002yCat.2237....0D

G 13.095755 [0.004501] C 2020yCat.1350....0G

J 10.442 [0.022] C 2003yCat.2246....0C

H 9.757 [0.021] C 2003yCat.2246....0C

K 9.522 [0.020] C 2003yCat.2246....0C

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`UCAC2 38202732`	`HBC 62`	`PSCz P04309+1803`	`WISE J043348.73+181009.8`
`AP J04334871+1810099`	`IRAS 04309+1803`	*`SV SVS 1083`**	`WISE J043348.73+181009.9`
`CSI+18-04309`	`2MASS J04334871+1810099`	`TIC 61259576`	`Gaia DR3 3314282402395528192`
`EPIC 247047380`	`MHA 257-6`	`UBV 4380`	`Gaia DR2 3314282402395528192`
`GCRV 55187`	`NSVS 9439120`	*`V DM Tau`**

References (731 between 1850 and 2026) (Total 731)
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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Data at NED - NASA/IPAC Extragalactic Database : V* DM Tau

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`UCAC2 38202732`	`AP J04334871+1810099`	`IRAS 04309+1803`	`2MASS J04334871+1810099`	*`V DM Tau`**
`WISE J043348.73+181009.8`	`WISE J043348.73+181009.9`	`Gaia DR3 3314282402395528192`	`Gaia DR2 3314282402395528192`

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