Flare stars of the Orion Nebula - Spectra of an outburst

Details Flare stars of the Orion Nebula - Spectra of an outburst Flare stars of the Orion Nebula - Spectra of an outburst

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231...49c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, March 1, 1988, p. 49-55.

Astronomy and Astrophysics

Astronomy

3

Emission Spectra, Flare Stars, M Stars, Orion Nebula, Stellar Spectra, Balmer Series, Calcium, H Gamma Line, Helium, Photosphere, Ultraviolet Spectra

Scientific paper

The authors present for the first time, detailed, time-resolved spectra of a flare event of an Orion cluster flare star. These spectra, covering ≡λλ3600 - 4600, were obtained by using the Anglo-Australian Telescope with a fibre coupler to simultaneously monitor 23 flare stars in the region of the Orion Nebula. The flare spectra reveal continuous emission which filled in the photospheric Ca I 4226 Å absorption, and hydrogen Balmer, Ca II H and K, He I 4026 Å and He I 4471 Å line emission. Overall, the spectral behaviour indicates similarities to strong outbursts of the classical dMe flare stars.

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