Keplerian molecular gas disk and black hole mass of NGC 4751

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Volume 695 (March 2025)

A&A, 695 (2025) A72

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Table 1.

Best fit M/L (F160W band) and SMBH mass values from different KinMS_fitter runs.

Velocity profile	Result with analytic SB			Result with SkySampler
	M/L	log(M_•)	M_• (10⁹ M_⊙)	M/L	log(M_•)	M_• (10⁹ M_⊙)
Original, half mask	2.294 $_{- 0.006}^{+ 0.005}$ $^{+0.005}_{-0.006}$	9.508 $_{- 0.004}^{+ 0.005}$ $^{+0.005}_{-0.004}$	3.22 $_{- 0.03}^{+ 0.04}$ $^{+0.04}_{-0.03}$	2.264 ± 0.004	9.523 $_{- 0.002}^{+ 0.003}$ $^{+0.003}_{-0.002}$	3.33 ± 0.02
Original, dust mask	2.285 ± 0.006	9.522 ± 0.004	3.32 ± 0.03	2.282 ± 0.007	9.523 ± 0.004	3.34 ± 0.03
Corrected, no mask	1.078 ± 0.004	9.636 ± 0.004	4.33 ± 0.04	1.079 $_{- 0.003}^{+ 0.005}$ $^{+0.005}_{-0.003}$	9.628 $_{- 0.007}^{+ 0.004}$ $^{+0.004}_{-0.007}$	4.25 $_{- 0.07}^{+ 0.04}$ $^{+0.04}_{-0.07}$
Corrected, dust mask	1.197 ± 0.004	9.535 $_{- 0.004}^{+ 0.006}$ $^{+0.006}_{-0.004}$	3.43 $_{- 0.03}^{+ 0.04}$ $^{+0.04}_{-0.03}$	1.196 $_{- 0.006}^{+ 0.004}$ $^{+0.004}_{-0.006}$	9.528 $_{- 0.005}^{+ 0.007}$ $^{+0.007}_{-0.005}$	3.37 $_{- 0.04}^{+ 0.05}$ $^{+0.05}_{-0.04}$
Arctangent ^(a)	–	9.598 $_{- 0.011}^{+ 0.008}$ $^{+0.008}_{-0.011}$	3.96 $_{- 0.1}^{+ 0.07}$ $^{+0.07}_{-0.1}$	–	9.596 $_{- 0.005}^{+ 0.003}$ $^{+0.003}_{-0.005}$	3.94 $_{- 0.04}^{+ 0.03}$ $^{+0.03}_{-0.04}$

Notes. The runs shown correspond to results from permutations of the image and mask used to derive the velocity profile, and the method used to derive the galaxy surface brightness. Except for the last row, the velocity profiles come from MGEFit.

^(a)

The results of the parameters of the function for the runs with analytic SB and SkySampler are Vmax = (443.2 ± 0.6) km/s and Rturn = $0 \overset{″}{.} 04 \pm 0 \overset{″}{.} 01$ $0{{\overset{\prime\prime}{.}}}04\pm0{{\overset{\prime\prime}{.}}}01$ , and Vmax = $(444 . 3_{- 0.8}^{+ 0.6})$ $(444.3^{+0.6}_{-0.8})$ km/s and Rturn = $0 \overset{″}{.} 049 \pm 0 \overset{″}{.} 004$ $0{{\overset{\prime\prime}{.}}}049\pm0{{\overset{\prime\prime}{.}}}004$ , respectively.

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