The Mrk 231 molecular outflow as seen in OH | Astronomy & Astrophysics (A&A)

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Volume 561 (January 2014)

A&A, 561 (2014) A27

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Table 4

Densities, column densities, masses, and energetics.

Parameter	QC	HVC

n_H (10⁴ cm^-3)	1−2^a	0.04−0.3^b
N_H (10²⁴ cm^-2)	1.3−4	0.06−0.12
M_gas (10⁸M_⊙)	2.5−5.0	0.2−0.4
Ṁ (M_⊙ yr^-1)	−	500−1200
Ṗ (10³⁶ g cm s^-2)	−	~5−7^c^,^d
L_mech (10¹⁰L_⊙)	−	~6−10^c^,^d
T_mech (10⁵⁶ erg)	−	~2−4^d

Notes. Assuming X_OH = 2.5 × 10^-6 relative to H nuclei and f = 1. Values scale inversely with the OH abundance relative to this assumed value. Only the best-constrained components, the QC and the HVC, are considered (see Sect. 3.4 for the LEC).

^(a)

Average density (the medium is probably clumpy).

^(b)

The two values correspond to the highest and lowest outflowing velocities (1700 and 100 km s^-1, respectively).

^(c)

Varies with velocity; values are given for v = 1000 km s^-1.

^(d)

Values are given for Ṁ = 850 M_⊙ yr^-1 and R_out/R_int = 1.3−1.5.

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