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Tracing the B[e] Phenomenon with the Narrow-Band delta a Photometric System

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PAUNZEN Ernst JANÍK Jan KURFÜRST Petr LIŠKA Jiří NETOPIL Martin SKARKA Marek ZEJDA Miloslav

Druh Článek ve sborníku
Konference The B[e] Phenomenom: Forty Years of Studies
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
Obor Astronomie a nebeská mechanika, astrofyzika
Klíčová slova photometry; delta a photometry; B[e] stars; Magellanic Clouds
Popis We present a case study and first results of the 3 filter narrow-band delta a photometric system to detect B[e] stars in an efficient way. One filter measures the flux at 5200 A where several Fe II emission lines are located. On the basis of available spectra, we investigated the expected area in the diagnostic tool of the delta a system, the so-called normality line, where these objects are located. They are well separated from all other known non-standard stars in the corresponding Teff (color) region. The first results of our photometric survey in the Magellanic Clouds are very promising and show the high potential of delta a photometry to significantly contribute to this research field.
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