Confirmation of the Luminous Blue Variable Status of MWC 930

Table 2

Parameters of the 𝐻𝛼 line in the spectrum of MWC 930 in 2004–2013.

Date	Blue		Center		Red		EW, Å
	Vr	𝐼	Vr	𝐼	Vr	𝐼
2004/07/06^a	−94	2.0	−29	0.48	116	18.9	54
2007/08/04	−64	2.2	23	0.73	114	14.5	39
2010/10/15	−6	3.7	49	1.83	118	12.8	36
2012/02/03	+35	2.4	60	1.37	123	8.4	19
2012/06/29	−17	2.2	58	1.20	118	8.8	19
2013/10/17^b	−63	1.7	16	0.69	116	8.3	19

Date of observation is listed in column 1; the radial velocity in km s⁻¹ and the intensity in units of the nearby continuum of the 𝐻𝛼 line profile parts are listed in columns 2-3 (blue emission peak), 4-5 (central depression), and 6-7 (red emission peak); respectively, column 8 lists the EW of the strongest (red) line peak.
^aThe spectrum was reported in [3].
^bThe 𝐻𝛼 line in this spectrum has an additional absorption component at −129 km s⁻¹ and 1.11 continuum intensity.