2014A&A...566A.112M


Query : 2014A&A...566A.112M

2014A&A...566A.112M - Astronomy and Astrophysics, volume 566A, 112-112 (2014/6-1)

An ALMA Early Science survey of molecular absorption lines toward PKS 1830-211. Analysis of the absorption profiles.

MULLER S., COMBES F., GUELIN M., GERIN M., AALTO S., BEELEN A., BLACK J.H., CURRAN S.J., DARLING J., DINH-V-TRUNG, GARCIA-BURILLO S., HENKEL C., HORELLOU C., MARTIN S., MARTI-VIDAL I., MENTEN K.M., MURPHY M.T., OTT J., WIKLIND T. and ZWAAN M.A.

Abstract (from CDS):

We present the first results of an ALMA spectral survey of strong absorption lines for common interstellar species in the z=0.89 molecular absorber toward the lensed blazar PKS1830-211. The dataset brings essential information on the structure and composition of the absorbing gas in the foreground galaxy. In particular, we find absorption over large velocity intervals (>100km/s) toward both lensed images of the blazar. This suggests either that the galaxy inclination is intermediate and that we sample velocity gradients or streaming motions in the disk plane, that the molecular gas has a large vertical distribution or extraplanar components, or that the absorber is not a simple spiral galaxy but might be a merger system. The number of detected species is now reaching a total of 42 different species plus 14 different rare isotopologues toward the SW image, and 14 species toward the NE line-of-sight. The abundances of CH, H2O, HCO+, HCN, and NH3 relative to H2 are found to be comparable to those in the Galactic diffuse medium. Of all the lines detected so far toward PKS1830-211, the ground-state line of ortho-water has the deepest absorption. We argue that ground-state lines of water have the best potential for detecting diffuse molecular gas in absorption at high redshift.

Abstract Copyright:

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

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 - 2022
#notes
1 QSO B0218+357 QSO 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 530 3
2 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1597 2
3 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5632 6
4 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1633 0
5 3C 279 Bla 12 56 11.1663795384 -05 47 21.528432492   18.01 17.75 15.87   ~ 2895 2
6 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4113 4
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13179 0
8 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3951 3
9 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2122 1
10 QSO B1830-211 Bla 18 33 39.9399138048 -21 03 39.368838780     18.70 21   ~ 618 1
11 QSO B1921-293 BLL 19 24 51.0555700728 -29 14 30.118109640   18.71 18.21 15.07   ~ 781 0

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2022.09.25-19:57:56

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