Turbulent and fast motions of H2 gas in active galactic nuclei

K. M. Dasyra; F. Combes

doi:10.1051/0004-6361/201117730

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Volume 533 (September 2011)

A&A, 533 (2011) L10

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Table 1

Fluxes and widths of resolved H₂ lines in local AGN.

Source	z	f_S1	FWHM_S1^a	f_S2	FWHM_S2^a	f_S3	FWHM_S3^a	M_warm	T	M_cold^b
–	–	10^-17 W m^-2	km s^-1	10^-17 W m^-2	km s^-1	10^-17 W m^-2	km s^-1	10⁷ M_⊙	K	10⁹ M_⊙

3C 236	0.0989	1.06 ± 0.07	582 (750)	0.49 ± 0.08	557 (719)	0.81 ± 0.09	624 (767)	6.10	345	< 5.1
3C 293	0.0450	5.30 ± 0.38	510 (716)	1.79 ± 0.31	553 (732)	2.96 ± 0.38	519 (714)	6.62	323	23
IRAS 09039+0503	0.1254	3.09 ± 0.54	519 (700)	1.34 ± 0.06	575 (730)	2.04 ± 0.13	569 (751)	31.6	334	...
MCG-2-58-22	0.0472	3.86 ± 0.42	544 (740)	1.50 ± 0.25	636 (796)	3.40 ± 0.46	662 (824)	4.19	359	5.7
Mrk 463E	0.0507	3.37 ± 0.59	556 (748)	<1.98	... (...)	3.76 ± 0.44	590 (767)	4.06	378	1.2
4C 12.50 (main^c)	0.1217	1.64 ± 0.21	... (519)	1.20 ± 0.11	... (552)	1.78 ± 0.46	... (652)	13.9	374	15
4C 12.50 (wing^c)	0.1196^d	0.62 ± 0.21	... (568)	0.44 ± 0.11	521 (690)	...	... (...)	5.19	374^e	...

Notes. None of these sources had a reliable S0 detection owing to the high noise levels in the long wavelength array.

^(a)

Rest-frame, instrumental-broadening-corrected FWHM. Their measured values appear in parenthesis. Their error bars correspond to 5−10% of their values.

^b

Cold H₂ gas masses calculated from CO observations (Evans et al. 1999, 2002; Bertram et al. 2007; Saripalli & Mack 2007) using an H₂/CO mass conversion factor of 1.5 M_⊙/(K km s^-1 pc²) for the IR-bright systems Mrk 463E and 4C 12.50 (Evans et al. 2002), and a standard Galactic value of 4.8 M_⊙/(K km s^-1 pc²) for all other sources. They are converted to the adopted cosmology.

^(c)

The main and wing components correspond to the primary and the secondary Gaussian functions in Fig. 2.

^(d)

The Gaussians that best fit the S1 and S2 line wings peak at − 646 km s^-1 and − 634 km s^-1 from systemic velocity, respectively.

^(e)

The excitation temperature of the rapidly moving H₂ gas is assumed to be identical to that of the H₂ at systemic velocity to facilitate the comparison of their masses.

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