Ciao a tutti, anche qui un paio di Be. Stavolta gli spettri sono centrati sulla riga h-beta 4861 A. Lhires III e reticolo da 2400 l/mm.
V2153 Cyg - 30.744/09/2019Note Be_Stars_TESS_table:
~15 BeSS spectra show Halpha up to 4xContinuum. Sometimes single-, double-, and triple-peaked. Highly variable Hbeta, usually double-peaked but sometimes very asymmetric V/R. Some strong metal lines. Likely binary based on Halpha profile/variability.La riga h-beta risulta effettivamente complessa, con diverse componenti in emissione sull'assorbimento fotosferico. Sulla destra, intorno a 4920A, la riga dell'elio neutro (HeI) con il probabile contributo del ferro ionizzato (FeII).
V423 Lac - 30.818/09/2019Note Be_Stars_TESS_table:
Sometimes Single or double-peaked Halpha around 5xContinuum. Seems like a dense disk. Hbeta usually 2xContinuum, sometimes highly variable V/R. Some metal lines apparent. Some emission even in weaker H lines (delta or gamma). It will be more interesting to monitor Hbeta or metal lines instead of HalphaPaolo