1998AJ....115..885B

Query : 1998AJ....115..885B

1998AJ....115..885B - Astron. J., 115, 885-889 (1998/March-0)

Search for free-free absorption cutoffs from tori in three type 2 active galactic nuclei.

BARVAINIS R. and LONSDALE C.

Abstract (from CDS):

We have observed three type 2 radio-loud active galactic nuclei using the Very Large Baseline Array at five frequencies between 1.6 and 15 GHz in a search for the free-free absorption cutoff predicted by some models for optically obscuring dusty molecular tori. We find no evidence for sharp cutoffs toward low frequencies in any of the sources. However, one source, OW 637, has VLBI components that fall steeply toward high frequencies (Sν ∝ ν–2).

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active

Nomenclature: Fig.4: [BL98] OW 637 A (Nos A-D)

Simbad objects: 8

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Number of rows : 8
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 NGC 262 Bla 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 778 2
2 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
3 3C 99.0 Sy2 04 01 07.6007854294 +00 36 32.480076280   20.200 19.010 18.532   ~ 108 1
4 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
5 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
6 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
7 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
8 QSO B2021+614 Bla 20 22 06.68174620 +61 36 58.8047323     19.00 17.58   ~ 335 1

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