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

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

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

Solar and Stellar Astrophysics 2026-07-24 v1

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

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 $\div$ 2026 compared to those observed in 2013 as well as a strong variability in their wind component. A detected variable radial velocity $V_{\odot}$ from $-20$ to $-68$ km/s with a standard deviation of the mean value of K $\sim$ 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 $V_{\odot}=-51.38\pm0.26$ 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.

Keywords

B[e] phenomenon post-AGB stars stellar pulsations stellar winds radial velocity variations spectroscopic variability

Cite

@article{arxiv.2607.22336,
  title  = {Detection of pulsations and a non-stable wind in IRAS 01005+7910, an object with the B[e]-phenomenon},
  author = {Anatoly S. Miroshnichenko and Valentina G. Klochkova and Vladimir E. Panchuk and Ekaterina S. Islentieva},
  journal= {arXiv preprint arXiv:2607.22336},
  year   = {2026}
}

Comments

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