Optical flares on the RS CVn binary II Peg
نویسندگان
چکیده
منابع مشابه
Musicos 1998: Optical and X-rays Observations of Flares on the Rs Cvn Binary Hr 1099
We present simultaneous and continuous observations of Hα, Hβ, Na i D1, D2 and He i D3 lines of the chromospherically active binary HR 1099. We have observed HR 1099 for more than 3 weeks almost continuously and monitored two flares. An increase in Hα, Ca ii H & K, Hβ, Hei D3 and Hei λ6678 and a strong filling-in of the Nai D1, D2 and Mgi b triplet during one of the flares are observed. We have...
متن کاملMusicos 1998: Observations of Rotational Modulation and Flares on the Rs Cvn Binary Hr1099
We present simultaneous and continuous observations of Hα, Hβ, Na I D 1 , D 2 , He I D 3 and Ca II H & K lines of the chromospherically active binary HR 1099. We have observed HR 1099 for more than 3 weeks almost continuously and monitored two flares. An increase in Hα and Ca II H & K, Hβ and He I D 3 and a strong filling-in of the Na I D 1 , D 2 during the flares are observed. We have found th...
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We present simultaneous and continuous observations of the Hα, Hβ, He i D3, Na i D1,D2 doublet and the Ca ii H & K lines for the RS CVn system HR 1099. The spectroscopic observations were obtained during the MUSICOS 1998 campaign involving several observatories and instruments, both echelle and long-slit spectrographs. During this campaign, HR 1099 was observed almost continuously for more than...
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Abstract. We present the results of time-resolved high-resolution spectroscopic observations of the very active RS CVn-type star SZ Psc, obtained during two consecutive observing nights in 2011 October. Chromospheric activity indicators (including the Hα, Na i D1, D2, He i D3, and Hβ lines) formed at different atmospheric heights were analyzed using the spectral subtraction technique, which sho...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1992
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/255.1.48