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HD 37806 Slavek Rucinski Halifax 2010

HD 37806 Slavek Rucinski Halifax 2010. Ae/Be Herbig star. In the Sigma Ori cluster field. Orion OB1b association. Young, moderately massive: 1.5 – 5 solar mass. A2Vpe. V ~ 7.95. M V ~ +0.2. ~350 pc (420 pc) HD 37806, known also as MWC 120

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HD 37806 Slavek Rucinski Halifax 2010

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  1. HD 37806 Slavek Rucinski Halifax 2010

  2. Ae/Be Herbig star • In the Sigma Ori cluster field. Orion OB1b association. • Young, moderately massive: 1.5 – 5 solar mass. • A2Vpe. V ~ 7.95. MV ~ +0.2. ~350 pc (420 pc) • HD 37806, known also as MWC 120 • One of first radio stars (Algonquin telescope 1973).

  3. MOST light curve

  4. MOST amplitude spectrum

  5. ESO 1985 – 1986; ASAS 2001 - 2009

  6. MOST data: Morlet-6 wavelet

  7. MOST data: DOG-2 wavelet

  8. MOST data: Scalegram (DOG-2 wavelet) Stochastic self-similar noise process: X(λt) = λαX(t) The slope implies α ≈ 1.5, same for cataclysmic binaries.

  9. The paper MNRAS: failure, insufficient interpretation and conclusions. A&Ap: A good, positive review, but… - Expand on interpretation. - Explain why not pulsations, eclipses, spots. - Include Hp data? Use raw TYCHO, if available. - The star is a binary! Recent paper, MNRAS 2010

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