2018
DOI: 10.1051/0004-6361/201732540
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Wind and nebula of the M 33 variable GR 290 (WR/LBV)

Abstract: Context: GR 290 (M 33 V0532=Romano's star) is a luminous M 33 object undergoing photometric variability typical for luminous blue variable (LBV) stars. It lies inside Wolf-Rayet region in the Hertzsprung-Russell diagram and possesses a WN8 type spectrum at the light minima. Analysis of Gran Telescopio Canarias (GTC) spectra obtained in 2016 led to the conclusion that it is surrounded by an unresolved H ii region formed mostly of ejected material from the central star, and disclosed the presence of a second, mo… Show more

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Cited by 7 publications
(12 citation statements)
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References 71 publications
(107 reference statements)
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“…New spectra of GR 290 were obtained with the OSIRIS spectrograph in September 2018 [23]. Detailed analysis of the spectra obtained in 2016 and 2018 did not reveal any changes ( Figure 5).…”
Section: Spectroscopy and Determination Of Physical Parametersmentioning
confidence: 99%
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“…New spectra of GR 290 were obtained with the OSIRIS spectrograph in September 2018 [23]. Detailed analysis of the spectra obtained in 2016 and 2018 did not reveal any changes ( Figure 5).…”
Section: Spectroscopy and Determination Of Physical Parametersmentioning
confidence: 99%
“…Therefore, we retrieved from General observational archive of Special Astrophysical observatory of Russian Academy of Sciences (SAO RAS) 3 all long-slit spectra of GR 290 obtained on Russian 6-m telescope with the Spectral Camera with Optical Reducer for Photometric and Interferometric Observations (SCORPIO) [21] during the years 2005-2016. We also utilised the spectra obtained with the OSIRIS spectrograph on the Gran Telescopio Canarias (GTC) and analysed by Maryeva et al [22] and Maryeva et al [23]. We reduced these spectra in a uniform way using the ScoRe package 4 initially created 5 of 24 for the SCORPIO data reduction, and extracted the spectra of all stars crossed by the slit.…”
Section: Namementioning
confidence: 99%
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