2000A&A...354L..45V


Query : 2000A&A...354L..45V

2000A&A...354L..45V - Astronomy and Astrophysics, volume 354, L45-48 (2000/2-1)

A thin HI circumnuclear disk in NGC 4261.

VAN LANGEVELDE H.J., PIHLSTROEM Y.M., CONWAY J.E., JAFFE W. and SCHILIZZI R.T.

Abstract (from CDS):

We report on high sensitivity, spectral line VLBI observations of the HI absorption feature in the radio galaxy NGC 4261. Although absorption is only detectable on the most sensitive baseline, it can be unambiguously associated with the counterjet and is interpreted to originate in a thin atomic circumnuclear disk. This structure is probably a continuation of the dusty accretion disk inferred from HST imaging, which could be feeding the massive black hole. HI column densities in front of the counterjet of the order of 1021(Tsp/100K)cm–2 are derived, consistent with X-ray data and VLBI scale free-free absorption. The data presented here are the result of the first scientific project processed on the new EVN MkIV data processor.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual: NGC 4261 - radio lines: galaxies

Simbad objects: 5

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Number of rows : 5
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 M 77 GiP 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4324 2
2 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3520 2
3 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1167 0
4 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6649 3
5 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4231 3

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2022.05.27-15:26:48

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