2008ApJ...686.1474I

Query : 2008ApJ...686.1474I

2008ApJ...686.1474I - Astrophys. J., 686, 1474-1479 (2008/October-3)

Laboratory evidence for efficient water formation in interstellar ices.

IOPPOLO S., CUPPEN H.M., ROMANZIN C., VAN DISHOECK E.F. and LINNARTZ H.

Abstract (from CDS):

Even though water is the main constituent in interstellar icy mantles, its chemical origin is not well understood. Three different formation routes have been proposed following hydrogenation of O, O₂, or O₃ on icy grains, but experimental evidence is largely lacking. We present a solid state astrochemical laboratory study in which one of these routes is tested. For this purpose O₂ ice is bombarded by H or D atoms under ultrahigh vacuum conditions at astronomically relevant temperatures ranging from 12 to 28 K. The use of reflection absorption infrared spectroscopy (RAIRS) permits derivation of reaction rates and shows efficient formation of H₂ O (D₂O) with a rate that is surprisingly independent of temperature. This formation route converts O₂ into H₂O via H₂O₂and is found to be orders of magnitude more efficient than previously assumed. It should therefore be considered as an important channel for interstellar water ice formation as illustrated by astrochemical model calculations.

Abstract Copyright: ∼

Journal keyword(s): Astrochemistry - Infrared: ISM - ISM: Atoms - ISM: Molecules - Methods: Laboratory

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	IRAS 23118+6110	Y*O	23 14 02.09473	+61 27 18.8460						~	385	0

Query : 2008ApJ...686.1474I

Basic data :

IRAS 23118+6110 -- Young Stellar Object

smm (JCMTSE,JCMTSF,...), IR (IRAS,IRCO,...), MIR (AKARI,MSX6C), out (2015MNRAS), Y*O (2015MNRAS), cor (2018MNRAS), G (2MASX)

23 14 02.09473 +61 27 18.8460 (Near-IR) [ ] C 2006AJ....131.1163S

23 11 53.21246 +61 10 57.8953 [ ]

111.56784268 +00.75134019 [ ]

-57.03 -58.23 -55.83 [0.08] (mm) 2018MNRAS.478.3693C

0.720 0.418 45 (NIR) C 2006AJ....131.1163S

J 17.060 [0.949] C 2006AJ....131.1163S

H 9.727 [0.048] C 2006AJ....131.1163S

K 7.664 [0.100] C 2006AJ....131.1163S

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`AKARI-IRC-V1 J2314016+612719`	`JCMTSF J231402.2+612721`	`NGC 7538E`	`[WBN74] NGC 7538 IRS 9`
`IRAS 23118+6110`	`2MASX J23140209+6127188`	`SCOPE G111.57+00.75`
`IRCO 1151`	`MSX6C G111.5671+00.7517`	`[RW2005] SMM 60`
`JCMTSE J231402.2+612721`	`NAME NGC 7538 IRS 9`	`[WBG79] NGC 7538(E)`

References (385 between 1850 and 2026) (Total 385)
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 : IRAS 23118+6110

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AKARI-IRC-V1 J2314016+612719 IRAS 23118+6110 2MASX J23140209+6127188 MSX6C G111.5671+00.7517

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