2004A&A...419..127B

Query : 2004A&A...419..127B

2004A&A...419..127B - Astronomy and Astrophysics, volume 419, 127-137 (2004/5-3)

Spectral characteristics of water megamaser galaxies. II. ESO103-G035, TXS2226-184, and IC1481.

BENNERT N., SCHULZ H. and HENKEL C.

Abstract (from CDS):

Long-slit optical emission-line spectra of the H₂O megamaser galaxies ESO103-G035, TXS2226-184, and IC1481 are evaluated in order to look for characteristics typical for water-megamaser galaxies. We present rotation curves, line ratios, electron densities, temperatures, and Hβ luminosities. The successful line-profile decompositions rest on d-Lorentzians with an additional parameter d to adjust the wings, rather than Gaussians or Lorentzians as basic functions. No significant velocity gradient is found along the major axis in the innermost 2kpc of TXS2226-184. IC1481 reveals a spectrum suggestive of a vigorous starburst in the central kiloparsec 10⁸ years ago. None of the three galaxies shows any hints for outflows nor special features which could give clues to the presence of H₂O megamaser emission. The galaxies are of normal Seyfert-2 (ESO103-G035) or LINER (TXS2226-184, IC1481) type.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: individual: ESO103-G035, TXS2226-184, IC1481

Simbad objects: 12

Full paper

View the references in ADS

Number of rows : 12

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	NGC 1052	AGN	02 41 04.79849989	-08 15 20.7519527	11.84	11.41	10.47	10.71		~	1279	2
2	M 77	GiP	02 42 40.7091669408	-00 00 47.859690204	9.70	9.61	8.87	10.1	9.9	~	4499	2
3	NGC 1386	GiP	03 36 46.238	-35 59 57.39	12.42	12.16	11.23	10.76		~	512	1
4	Mrk 1210	Sy2	08 04 05.8608218112	+05 06 49.823376120		14.55	13.7			~	292	2
5	NGC 3079	Sy2	10 01 57.8789863992	+55 40 47.449758324	11.57	11.54	10.86			~	1366	3
6	NGC 3115	GiG	10 05 13.9270507008	-07 43 06.982712292		11		9.37		~	1000	2
7	IC 2560	Sy2	10 16 18.7073057664	-33 33 49.720274676		12.53	13.31	11.25	12.2	~	253	0
8	NGC 4179	GiG	12 12 52.1118346920	+01 17 58.926287976		12.8				~	169	0
9	M 106	Sy2	12 18 57.620	+47 18 13.39		9.14	8.41	8.11		~	2317	3
10	ESO 103-35	Sy2	18 38 20.3204821536	-65 25 39.141804936		14.75	14.53	13.24		~	305	0
11	NAME TXFS 2226-1821	LIN	22 29 12.4915751904	-18 10 47.242352208		16.92		15.73		~	59	1
12	IC 1481	Sy1	23 19 25.0863724296	+05 54 21.836715048		14.5				~	93	1

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