Wind parameters of the new LBV in NGC1156
| Autor: | Solovyeva, Y., Kostenkov, A., Dedov, E., Vinokurov, A. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.22323/1.425.0049 |
| Popis: | In this work we present the spectrum modeling results for the newly discovered luminous blue variable (LBV) in the NGC 1156 galaxy. Extended atmosphere models were calculated using the non-LTE code CMFGEN. We have obtained the luminosity of the discovered LBV $L\simeq (1.6\pm0.2) \times 10^{6} L_{\odot}$, effective temperature $T_{\text{eff}}=7.9\pm0.4$ kK and mass-loss rate $\dot{M}f^{-0.5}= (8.2\pm1.0) \times 10^{-4} M_{\odot}\text{yr}^{-1}$. The hydrogen abundance in the wind is $\approx20\,$% for the metallicity $Z=0.5 Z_{\odot}$ of the host galaxy. Comment: Proceedings of Science. Conference "The Multifaceted Universe: Theory and Observations - 2022 (MUTO2022)", 23-27 May 2022, SAO RAS, Nizhny Arkhyz, Russia |
| Databáze: | arXiv |
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