Abstract <p>Based on archived data from the MUSE (Multi Unit Spectroscopic Explorer) spectrograph of the VLT telescope, 40 candidates for luminous stars with their own emission in the H<sub>α</sub> line in the galaxy NGC 2835 were selected. Based on the results of analysis of the candidate spectra and direct images of galaxies with high angular resolution from the Hubble Space Telescope archive, a classification was carried out. It is shown that eight objects in NGC 2835 are Wolf–Rayet stars or compact stellar associations that include them. The five sources in NGC 2835, which have the spectra of supergiants with surrounding compact nebulas, are classified by us as OB clusters. Another ten objects showed wide H<sub>α</sub> lines and a weak continuum, and we labeled them as unclassified. Of the greatest interest for further observations in order to more accurately classify and evaluate the fundamental parameters are ten stars previously classified as yellow supergiants/hypergiants and one B[e]-supergiant. One of the important results is the detection of five candidates for luminous blue variables (LBVs) and one probable supernova impostor. The study is partially based on a talk presented at the Modern Stellar Astronomy 2025 conference.</p>

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Search for Luminous Emission Stars in the Galaxy NGC 2835

  • O. N. Sholukhova,
  • Yu. N. Solovyeva,
  • A. S. Vinokurov,
  • V. S. Frolova

摘要

Abstract

Based on archived data from the MUSE (Multi Unit Spectroscopic Explorer) spectrograph of the VLT telescope, 40 candidates for luminous stars with their own emission in the Hα line in the galaxy NGC 2835 were selected. Based on the results of analysis of the candidate spectra and direct images of galaxies with high angular resolution from the Hubble Space Telescope archive, a classification was carried out. It is shown that eight objects in NGC 2835 are Wolf–Rayet stars or compact stellar associations that include them. The five sources in NGC 2835, which have the spectra of supergiants with surrounding compact nebulas, are classified by us as OB clusters. Another ten objects showed wide Hα lines and a weak continuum, and we labeled them as unclassified. Of the greatest interest for further observations in order to more accurately classify and evaluate the fundamental parameters are ten stars previously classified as yellow supergiants/hypergiants and one B[e]-supergiant. One of the important results is the detection of five candidates for luminous blue variables (LBVs) and one probable supernova impostor. The study is partially based on a talk presented at the Modern Stellar Astronomy 2025 conference.