2006A&A...458..417M


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.25CEST16:45:01

2006A&A...458..417M - Astronomy and Astrophysics, volume 458, 417-426 (2006/11-1)

Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211.

MULLER S., GUELIN M., DUMKE M., LUCAS R. and COMBES F.

Abstract (from CDS):

With the Plateau de Bure interferometer, we have measured the C, N, O and S isotopic abundance ratios in the arm of a spiral galaxy with a redshift of 0.89. The galaxy is seen face-on according to HST images. Its bulge intercepts the line of sight to the radio-loud quasar PKS 1830-211, giving rise at mm wavelengths to two Einstein images located each behind a spiral arm. The arms appear in absorption in the lines of several molecules, giving the opportunity to study the chemical composition of a galaxy only a few Gyr old. The isotopic ratios in this spiral galaxy differ markedly from those observed in the Milky Way. The 17O/18O and 14N/15N ratios are low, as one would expect from an object too young to let low mass stars play a major role in the regeneration of the gas.

Abstract Copyright:

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

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2846 2
2 QSO B0218+357 QSO 02 21 05.5 +35 56 14   20.0 20.0 19.60   ~ 485 3
3 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1358 1
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14211 1
5 IRC +10216 C* 09 47 57.406 +13 16 43.56     10.96     C9,5e 2094 0
6 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5191 6
7 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5223 1
8 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1224 2
9 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1527 2
10 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 10884 0
11 4C 09.57 BLL 17 51 32.81857318 +09 39 00.7284829   17.46 16.78 15.57   ~ 773 1
12 QSO B1830-211B LeQ 18 33 39.822 -21 03 40.47           ~ 18 1
13 QSO B1830-211A LeQ 18 33 39.871 -21 03 39.78           ~ 18 1
14 [KC2002] QSO J1833-2103 abs 0.88582 ALS 18 33 39.89 -21 03 39.8           ~ 29 1
15 QSO B1830-211 QSO 18 33 39.92 -21 03 39.9     18.70 21   ~ 534 6

    Equat.    Gal    SGal    Ecl

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2019.08.25-16:45:01

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