2017ApJ...850..105A


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST18:11:14

2017ApJ...850..105A - Astrophys. J., 850, 105-105 (2017/November-3)

Gas-grain fluorine- and chlorine chemistry in the interstellar medium.

ACHARYYA K. and HERBST E.

Abstract (from CDS):

We have studied the formation of fluorine- and chlorine-bearing species for a variety of dense interstellar conditions using a gas-grain network. Our homogeneous models have been constructed for low-temperature dense clouds, as well as warm-up regions. In addition to the observed species HF, CF+, HCl, HCl+, and H2Cl+, we have included a number of additional halogen-containing molecules, and explored their gas-phase and grain-surface chemistry. These molecules include neutral species such as Cl2, ClO, CCl, and HCCl, as well as the carbon-halogen species CH2Cl and CH3Cl, and ionic species such as CCl+, ClO+, CH3ClH+, HF+, SiF+, and H2F+. Predictions are made for the abundances of these species as functions of time, and comparisons are made with the observed abundances obtained for halogen species in dense regions, which include HF, HCl, CH3Cl, and CF+. The peak fractional abundance of the newly detected gas-phase CH3Cl is predicted to be ~10–10–5×10–8 in our warm-up simulations, depending upon density and the age of the pre-warm-up phase after which warm-up begins. These values can be compared with the observed abundance of methyl chloride in the hot corino IRAS 16293-2422 if the abundance of methanol is known.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

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

Simbad objects: 27

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Number of rows : 27

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 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2954 2
2 IC 1795 HII 02 25 43.5 +62 06 13           ~ 229 0
3 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 947 2
4 NAME Orion S reg 05 35 12.9 -05 24 10           ~ 122 0
5 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1024 2
6 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2025 1
7 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 727 0
8 V* V2457 Ori Or* 05 35 26.97000 -05 09 54.4644         18.858 ~ 117 0
9 NAME Ori A MoC 05 38 -07.1           ~ 2697 0
10 NAME ORI MOL CLOUD MoC 05 56 -01.8           ~ 865 1
11 NAME Mon R2 HII 06 07 46.6 -06 22 59           ~ 655 2
12 IRC +10216 C* 09 47 57.40632 +13 16 43.5648     10.96     C9,5e 2153 0
13 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1276 2
14 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1055 1
15 NAME dze Oph Cloud Cld 16 37 09 -10 34.0           ~ 106 0
16 NGC 6334 HII 17 20 51 -36 06.9           ~ 591 0
17 NAME NGC 6334 I(N) smm 17 20 54 -35 45.0           ~ 127 1
18 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3515 3
19 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1943 1
20 NAME Sgr B2 (South) HII 17 47 20.430 -28 23 45.06           ~ 85 0
21 NAME Sgr B2 Main Rad 17 47 20.5 -28 23 06           ~ 337 1
22 W 31c HII 18 10 29.1 -19 56 05           ~ 302 0
23 QSO B1830-211 QSO 18 33 39.92 -21 03 39.9     18.70 21   ~ 553 6
24 W 49n HII 19 10 13.2 +09 06 12           ~ 418 3
25 W 51 SNR 19 23 50 +14 06.0           ~ 1154 1
26 RAFGL 2591 Y*O 20 29 25.03656 +40 11 20.3316           ~ 571 0
27 [MBS2007c] CygX-N63 mm 20 40 05.2 +41 32 13           ~ 14 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-18:11:14

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