2010A&A...517A...1H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST04:45:52

2010A&A...517A...1H - Astronomy and Astrophysics, volume 517, A1-1 (2010/7-1)

Complex molecule formation in grain mantles.

HALL P. and MILLAR T.J.

Abstract (from CDS):

Complex molecules such as ethanol and dimethyl ether have been observed in a number of hot molecular cores and hot corinos. Attempts to model the molecular formation process using gas phase only models have so far been unsuccessful. To demonstrate that grain surface processing is a viable mechanism for complex molecule formation in these environments. A variable environment parameter computer model has been constructed which includes both gas and surface chemistry. This is used to investigate a variety of cloud collapse scenarios. Comparison between model results and observation shows that by combining grain surface processing with gas phase chemistry complex molecules can be produced in observed abundances in a number of core and corino scenarios. Differences in abundances are due to the initial atomic and molecular composition of the core/corino and varying collapse timescales. Grain surface processing, combined with variation of physical conditions, can be regarded as a viable method for the formation of complex molecules in the environment found in the vicinity of a hot core/corino and produce abundances comparable to those observed.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: molecules - ISM: abundances - astrochemistry

Simbad objects: 29

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Number of rows : 29

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 W 3(H2O) Mas 02 27 04.6 +61 52 25           ~ 123 0
2 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 390 3
3 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 596 1
4 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 465 0
5 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 553 0
6 [HKM99] B1-b cor 03 33 20.32 +31 07 21.5           ~ 158 0
7 NAME Kutner's Cloud MoC 04 32 44.6 +24 23 13           ~ 209 0
8 NAME [BM89] TMC-2 PoC 04 32 44.7 +24 25 13           ~ 186 0
9 NAME OMC1 Ridge reg 05 35 13.4 -05 23 07           ~ 123 0
10 NAME Orion Core ? 05 35 14.5 -05 22 30           ~ 175 0
11 2MASS J08254384-5100326 Y*O 08 25 43.85 -51 00 32.7           ~ 298 1
12 Barnard 228 cor 15 43 00.9 -34 08 48           ~ 64 0
13 IRAS 15398-3359 Y*? 15 43 02.21016 -34 09 07.7112       18.38 21.72 ~ 128 0
14 GAL 327.30-00.60 HII 15 53 05.0 -54 35 24           ~ 122 0
15 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1035 1
16 NAME NGC 6334F (C) HII 17 20 53.45 -35 47 02.6           ~ 206 1
17 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 514 1
18 GAL 010.47+00.03 HII 18 08 38.4 -19 51 52           ~ 109 0
19 W 33a Y*O 18 14 39.0 -17 52 03           ~ 584 0
20 RAFGL 2136 SFR 18 22 26.8740 -13 30 17.177           ~ 244 0
21 [EC89] SVS 4-5 Y*O 18 29 57.59 +01 13 00.6           ~ 30 1
22 RAFGL 7009S HII 18 34 20.911 -05 59 42.23           ~ 193 0
23 IRAS 18449-0115 cor 18 47 34.4947 -01 12 40.269           ~ 312 0
24 OH 34.26 +0.15 SFR 18 53 18.54 +01 14 57.9           ~ 460 0
25 W 51e1 Rad 19 23 43.77 +14 30 25.9           ~ 115 0
26 W 51e2 Rad 19 23 43.90 +14 30 34.8           ~ 180 0
27 [MBS2007c] CygX-N44 Rad 20 39 01.01 +42 22 50.2           ~ 362 0
28 NAME LDN 1014 IRS Y*O 21 24 07.58 +49 59 08.9           ~ 75 0
29 IRAS 23118+6110 Y*O 23 14 01.63 +61 27 20.2           ~ 341 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-04:45:52

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