2013MNRAS.429.3578M

Query : 2013MNRAS.429.3578M

2013MNRAS.429.3578M - Mon. Not. R. Astron. Soc., 429, 3578-3583 (2013/March-2)

Effects of H2 coating of grains on depletion of molecular species.

MORATA O. and HASEGAWA T.I.

Abstract (from CDS):

Physical conditions in dense and cold regions of interstellar clouds favour the formation of ice mantles on the surfaces of interstellar grains. It is predicted that most of the gaseous species heavier than H2 or He will adsorb on to the grains and will disappear from the gas phase, changing its chemistry, within ∼ 10⁹/nH yr. Nonetheless, many molecules in molecular clouds are not completely depleted in time-scales of 10⁵yr. Several speculative mechanisms have been proposed to explain why molecules stay in the gas phase, but up to now none is fully convincing. At the same time, these mechanisms are not mutually exclusive and we can still explore the effects of other possible processes. We speculate on the consequences of H2 coating of grains on the evaporation rates of adsorbed species. More experiments and simulations are needed to calculate the evaporation rate Eevap(X-H2).

Journal keyword(s): astrochemistry - molecular processes - ISM: abundances - ISM: molecules

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	NGC 7023	OpC	21 01 36.9	+68 09 48						~	739	0

Query : 2013MNRAS.429.3578M

Basic data :

NGC 7023 -- Open Cluster
Other object types:	`OpC (2022ApJS,OCISM,...)`, `Cl* (C,Cl,...)`, `IR (IRAS,PSCz,...)`, `V* (AAVSO)`, `HII (LBN)`, `RNe ([RK68])`, `ISM (GN)`, `UV ([SPB96])`
ICRS coord. (ep=J2000) :	`21 01 36.9 +68 09 48 (Optical) [ ] ~ ~`
FK4 coord. (ep=B1950 eq=1950) :	`21 00 59.7 +67 57 56 [ ]`
Gal coord. (ep=J2000) :	`104.0616 +14.1926 [ ]`
Proper motions mas/yr :	`7.815 -1.086 [0.562 0.553 90] C` `2022ApJS..262....7H`
Parallaxes (mas):	`2.905 [0.077] C` `2022ApJS..262....7H`

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`NGC 7023`	`IRAS F20599+6755`	`NAME IRIS Nebula`	`RAFGL 2695`
`C 2059+679`	`IRAS F21009+6758`	`OCISM 50`	`[BDB2003] G104.06+14.19`
`Cl VDB 139`	`IRAS 21009+6758`	`OCl 235`	`[RK68] 105`
`GN 21.01.0`	`LBN 104.08+14.21`	`PSCz P20599+6755`	`[SPB96] 2161`
`IRAS 20599+6755`	`LBN 487`	`PSCz P21009+6758`	`AAVSO 2044+67`

References (739 between 1850 and 2026) (Total 739)
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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 7023

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`NGC 7023`	`IRAS 20599+6755`	`IRAS F20599+6755`	`IRAS F21009+6758`	`IRAS 21009+6758`
`RAFGL 2695`

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