2013A&A...558L...5G


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST01:58:08

2013A&A...558L...5G - Astronomy and Astrophysics, volume 558, L5-5 (2013/10-1)

Fundamental vibrational transitions of hydrogen chloride detected in CRL 2136.

GOTO M., USUDA T., GEBALLE T.R., MENTEN K.M., INDRIOLO N. and NEUFELD D.A.

Abstract (from CDS):

We would like to understand the chemistry of dense clouds and their hot cores more quantitatively by obtaining more complete knowledge of the chemical species present in them. We have obtained high-resolution infrared absorption spectroscopy at 3-4 µm toward the bright infrared source CRL 2136. The fundamental vibration-rotation band of HCl has been detected within a dense cloud for the first time. The HCl is probably located in the warm compact circumstellar envelope or disk of CRL 2136. The fractional abundance of HCl is (4.9-8.7)x10–8, indicating that approximately 20% of the elemental chlorine is in gaseous HCl. The kinetic temperature of the absorbing gas is 250K, half the value determined from infrared spectroscopy of 13CO and H2O. The percentage of chlorine in HCl is approximately that expected for gas at this temperature. The reason for the difference in temperatures between the various molecular species is unknown.

Abstract Copyright:

Journal keyword(s): astrochemistry - ISM: molecules - line: identification - infrared: ISM - stars: formation - stars: individual: CRL 2136

Simbad objects: 9

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Number of rows : 9

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 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1015 2
2 NAME Ori A MoC 05 38 -07.1           ~ 2675 0
3 NAME Mon R2 HII 06 07 46.6 -06 22 59           ~ 650 2
4 * alf Oph ** 17 34 56.06945 +12 33 36.1346 2.32 2.22 2.07 1.93 1.85 A5IVnn 440 0
5 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1909 1
6 RAFGL 2136 SFR 18 22 26.8740 -13 30 17.177           ~ 244 0
7 * eps Sgr ** 18 24 10.31840 -34 23 04.6193 1.69 1.82 1.85 1.85 1.86 B9IVp_lB? 197 0
8 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2504 0
9 [WBN74] NGC 7538 IRS 1 Y*O 23 13 45.318 +61 28 11.69           ~ 367 3

    Equat.    Gal    SGal    Ecl

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2020.07.04-01:58:08

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