The massive relic galaxy NGC 1277 is dark matter deficient - From dynamical models of integral-field stellar kinematics out to five effective radii

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Volume 675 (July 2023)

A&A, 675 (2023) A143

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Table 4.

JAM model fit parameters for NGC 1278.

		Fitting approach	q_⋆ min	β_z or β_r	β_z, out or β_r, out	α	M_BH	f_DM(6 kpc)
							(10⁹ M_⊙)	f_DM(1.5 R_e)
Cylindric	Single β_z	cA M_BH fixed	> 0.64	0.04 ± 0.03	−	1.325 ± 0.018	1.5	0.016 ± 0.011
				cB all free	> 0.66	0.03 ± 0.02	−	1.28 ± 0.03	3.2 ± 0.8	0.029 ± 0.015

		Two β_z	cAβ_zM_BH fixed	0.61 ± 0.09	0.14 ± 0.06	−0.01 ± 0.05	1.33 ± 0.02	1.5	0.040 ± 0.013
				cBβ_z all free	0.63 ± 0.10	0.12 ± 0.07	−0.01 ± 0.05	1.32 ± 0.04	1.9 ± 1.0	0.035 ± 0.015

Spherical	Single β_r		sA M_BH fixed	> 0.71	0.31 ± 0.07	−	1.18 ± 0.06	1.5	0.12 ± 0.04
				sB all free	> 0.70	0.38 ± 0.08	−	1.16 ± 0.06	< 0.7	0.14 ± 0.04

		Two β_r	sAβ_rM_BH fixed	> 0.69	0.31 ± 0.09	0.33 ± 0.16	1.16 ± 0.12	1.5	0.13 ± 0.07
				sBβ_r all free	> 0.69	0.37 ± 0.09	0.40 ± 0.17	1.14 ± 0.12	< 0.9	0.15 ± 0.07

Notes. Fit sB is shown in Fig. 16. Values in boldface were fixed for the fit. The grey background indicates our fiducial fit. The errors and the upper and lower limits correspond to formal one sigma uncertainties (see text in Sect. 4.1).

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