2014A&A...566L...6M

Query : 2014A&A...566L...6M

2014A&A...566L...6M - Astronomy and Astrophysics, volume 566L6-6 (2014/6-1)

Detection of chloronium and measurement of the 35Cl/37Cl isotopic ratio at z = 0.89 toward PKS 1830-211.

MULLER S., BLACK J.H., GUELIN M., HENKEL C., COMBES F., GERIN M., AALTO S., BEELEN A., DARLING J., HORELLOU C., MARTIN S., MENTEN K.M., DINH-V-TRUNG and ZWAAN M.A.

Abstract (from CDS):

We report the first extragalactic detection of chloronium (H2Cl+) in the z=0.89 absorber in front of the lensed blazar PKS1830-211. The ion is detected through its 111-000 line along two independent lines of sight toward the North-East and South-West images of the blazar. The relative abundance of H2Cl+ is significantly higher (by a factor ∼7) in the NE line of sight, which has a lower H2/H fraction, indicating that H2Cl+ preferably traces the diffuse gas component. From the ratio of the H235Cl+ and H237Cl+ absorptions toward the SW image, we measure a 35Cl/37Cl isotopic ratio of 3.1–0.2+0.3 at z=0.89, similar to that observed in the Galaxy and the solar system.

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Journal keyword(s): quasars: absorption lines - galaxies: ISM - galaxies: abundances - ISM: molecules - radio lines: galaxies - quasars: individual: PKS 1830-211

Simbad objects: 11

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Number of rows : 11
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 IC 1795 HII 02 25 43.5 +62 06 13           ~ 247 0
2 NAME OMC 1 Cluster Cl* 05 35 14 -05 22.5           ~ 17 0
3 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 1004 0
4 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
5 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2455 0
6 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
7 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
8 NAME Sgr B2 (South) HII 17 47 20.430 -28 23 45.06           ~ 106 0
9 W 31c HII 18 10 29.1 -19 56 05           ~ 357 0
10 RAFGL 2136 Y*O 18 22 26.52888 -13 30 14.0400           ~ 300 0
11 QSO B1830-211 Bla 18 33 39.9399138048 -21 03 39.368838780     18.70 21   ~ 724 1

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