Research Article

Confirmation of the Luminous Blue Variable Status of MWC 930

Table 1

Spectroscopic observations of MWC 930 in 2004–2013.

Date JD-2450000 Telescope Sp. range

2004/07/06a 3193.674 2.1 m Leoncito 15000 4320–6830
2007/08/04 4316.739 2.2 m ESO 48000 4200–8850
2010/10/15 5485.000 2.1 m SPM 15000 4000–6830
2012/02/03 5960.669 3.6 m CFHT 65000 3600–10500
2012/06/29 6107.521 3.6 m CFHT 65000 3600–10500
2013/07/21 6494.898 3.0 m Lick 700 4600–23500
2013/10/17 6583.585 2.1 m SPM 15000 4556–8130

Telescopes and spectrographs used: REOSC at the 2.1 m of the Complejo Astronómico El Leoncito (Argentina), FEROS at the 2.2 m ESO/MPG of the La Silla Observatory (Chile), REOSC at the 2.1 m of the San Pedro Martir (SPM) Observatory (Mexico), ESPaDOns at the 3.6 m CFHT (Hawaii, USA), and NIRI at the 3 m Shane telescope at the Lick Observatory (California, USA).
aThe spectrum was reported in [3] and is mentioned here for comparison with the high state data.