We report new medium-resolution spectroscopy covering the wavelength range from 0.6 to 2.4
m, as well as multi-epoch, multi-wavelength photometry, of the Class I high-mass embedded young stellar object Mol 12 (IRAS 05373+2349). It is embedded (
)
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We report new medium-resolution spectroscopy covering the wavelength range from 0.6 to 2.4
m, as well as multi-epoch, multi-wavelength photometry, of the Class I high-mass embedded young stellar object Mol 12 (IRAS 05373+2349). It is embedded (
) in the centre of a dense core at a distance of 1.59 kpc from the Sun and has a total luminosity of
. The spectra show a large number of permitted atomic emission lines, mostly for Fe, H, C, N, and Ca, that originate in the inner zones of a very active protoplanetary disc and no photospheric absorption lines. Conspicuously, the He I line at 1.0830
m displays a complex P-Cygni profile. Also, the first overtone CO emission band-heads at 2.3
m are seen in emission. From the strengths of the principal emission lines, we determined the accretion rate and luminosity to be
y
−1 and
, respectively. Decade-long light curves show a series of irregular brightness dips of more than four magnitudes in
r, becoming shallower as the wavelength increases and disappearing at
m. The colour–magnitude diagrams suggest the occurrence of a series of eclipses caused by the passage of small dust cloudlets in front of the star, producing more than 10 magnitudes of extra extinction.
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