Detection of pulsations and a non-stable wind in IRAS 01005+7910, an object with the B[e]-phenomenon

arXiv:2607.22336 · astro-ph.SR · Submitted 2026-07-24 · Read on arXiv

Anatoly S. Miroshnichenko, Valentina G. Klochkova, Vladimir E. Panchuk, Ekaterina S. Islentieva

astro-ph.SR

Submitted: 2026-07-24

Comments: 10 pages, 3 figures, 1 table, accepted for publication in Astronomy

License: http://creativecommons.org/licenses/by/4.0/

The gist: Comparison of the spectra obtained at different observing dates shows significant variations in the complex H alpha and H beta line profiles, such as a systematic increase in their emission peak

Terminology

Accuracy — 3× in this paper · explained in 1 episode
Core — 3× in this paper · explained in 2 episodes
Abundance — 2× in this paper · explained in 1 episode
Big Telescope Alt-azimutal — 1× in this paper
Calibration — 1× in this paper · explained in 7 episodes
Trace — 1× in this paper · explained in 2 episodes
alpha — 1× in this paper · explained in 1 episode

Abstract

Comparison of the spectra obtained at different observing dates shows significant variations in the complex H alpha and H beta line profiles, such as a systematic increase in their emission peak strengths in 2025 2026 compared to those observed in 2013 as well as a strong variability in their wind component. A detected variable radial velocity V from-20 to-68 km/s with a standard deviation of the mean value of K about 8.0 km/s can be interpreted as a result of pulsations or the presence of a companion. The stationary positions of forbidden lines with a mean radial velocity of V=-51.38 plus or minus0.26 km/s are taken as an improved systemic velocity. Overall, a set of properties of IRAS 01005+7910 points to its status as a post-AGB star, which has undergone the hot-bottom burning phase.

Terminology

Abstract

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