Toward Understanding The B[e] Phenomenon: III. Properties of the optical counterpart of IRAS 00470+6429

Abstract

FS CMa type stars are a group of Galactic objects with the B[e] phenomenon. They exhibit strong emission-line spectra and infrared excesses, which are most likely due to recently formed circumstellar dust. The group content and identification criteria were described in the first two papers of the series. In this paper we report our spectroscopic and photometric observations of the optical counterpart of IRAS 00470+6429 obtained in 2003--2008. The optical spectrum is dominated by emission lines, most of which have P Cyg type profiles. We detected significant brightness variations, which may include a regular component, and variable spectral line profiles in both shape and position. The presence of a weak Li {\sc I} 6708 Åline in the spectrum suggests that the object is most likely a binary system with a B2--B3 spectral type primary companion of a luminosity $\log$ L/L$\odot$ = 3.9$\pm$0.3 and a late-type secondary companion. We estimate a distance toward the object to be 2.0$\pm$0.3 kpc from the Sun.

arXiv comment37 pages, 13 figures

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Cited by in corpus (11)

• Circumstellar envelope manifestations in the optical spectra of evolved stars
• AMBER/VLTI observations of the B[e] star MWC 300
• Towards Understanding The B[e] Phenomenon: IV. Modeling of IRAS 00470+6429
• First detections of FS Canis Majoris stars in clusters. Evolutionary state as constrained by coeval massive stars
• Detailed optical spectroscopy of the B[e] star MWC 17
• Spectral variability of the IR-source IRAS 01005+7910 optical component
• Peculiarities of the atmosphere and envelope of a post-AGB star, the optical counterpart of IRAS 23304+6347
• 2.5-MHD models of circumstellar discs around FS~CMa post-mergers : I. Non-stationary accretion stage
• Instability in the system of the distant post-AGB star LS III+52 24 (IRAS 22023+5249)
• Gusty wind in the system of the infrared source RAFGL 5081
• New Insight into the FS CMa System MWC 645 from Near-Infrared and Optical Spectroscopy