2008A&A...484L..43I


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET22:26:50

2008A&A...484L..43I - Astronomy and Astrophysics, volume 484, L43-46 (2008/6-4)

6.7GHz methanol absorption toward the Seyfert 2 galaxy NGC 3079.

IMPELLIZZERI C.M.V., HENKEL C., ROY A.L. and MENTEN K.M.

Abstract (from CDS):

The detection of the 6.7GHz line of methanol (CH3OH) is reported for the first time toward an object beyond the Magellanic Clouds. Using the Effelsberg 100m telescope, two absorption features were identified toward the Seyfert 2 galaxy NGC3079. Both components probably originated on lines-of-sight toward the central region, presumably absorbing the radio continuum of the nuclear sources A, B, and E of NGC 3079. One absorption feature, at the systemic velocity, is narrow and may arise from gas not related to the nuclear environment of the galaxy. The weaker blue-shifted component is wider and may trace outflowing gas. Total A-type CH3OH column densities are estimated to be between a few times 1013 and a few times 1015cm–2. Because of a highly frequency-dependent continuum background, the overall similarity of HI, OH, and CH3OH absorption profiles hints at molecular clouds that cover the entire area occupied by the nuclear radio continuum sources (∼4pc).

Abstract Copyright:

Journal keyword(s): galaxies: Seyfert - galaxies: nuclei - galaxies: starburst - galaxies: active - galaxies: individual: NGC3079 - radio lines: galaxies

Simbad objects: 14

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Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2998 2
2 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2563 2
3 NGC 1052 GiP 02 41 04.79851 -08 15 20.7517 11.84 11.41 10.47 10.71   ~ 1171 2
4 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4176 2
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5854 1
6 IC 342 SBG 03 46 48.514 +68 05 45.98   10.5       ~ 1404 1
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15187 1
8 NGC 2110 Sy2 05 52 11.3760694860 -07 27 22.489931610   14.77 13.51 11.86   ~ 603 1
9 NGC 3079 Sy2 10 01 57.80342 +55 40 47.2428 11.57 11.54 10.86     ~ 1279 3
10 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1132 0
11 NGC 5135 Sy2 13 25 44.059 -29 50 01.24   12.58 13.35 11.53 12.2 ~ 434 1
12 NGC 5506 AGN 14 13 14.901 -03 12 27.22   15.25 14.38     ~ 1013 0
13 NGC 6240 Sy2 16 52 58.861 +02 24 03.55   14.31 13.37     ~ 1509 2
14 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11991 0

    Equat.    Gal    SGal    Ecl

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