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Astron. Astrophys. 355, L35-L38 (2000)

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Letter to the Editor

Pulsation in two Herbig Ae stars: HD 35929 and V351 Ori *

M. Marconi 1, V. Ripepi 1, J.M. Alcalá 1, E. Covino 1, F. Palla 2 and L. Terranegra 1

1 Osservatorio Astronomico di Capodimonte, Via Moiariello 16, 80131 Napoli, Italy
2 Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy

Received 3 January 2000 / Accepted 22 February 2000

Abstract

New photometric observations of seven intermediate mass pre-main sequence [FORMULA] Scuti candidates are presented. The periods and pulsation modes are derived for two of these stars, namely HD 35929 and V351 Ori. The comparison between observations and nonlinear pulsational models allows us to provide some initial constraints on their mass and evolutionary state. As an illustration we discuss the use of periods to identify the mode of pulsation in these two stars and to have an independent estimate of their distances.

Key words: stars: distances – stars: evolution – stars: fundamental parameters – stars: Hertzsprung – Russel (HR) and C-M diagrams – stars: pre-main sequence – stars: variables: ffi Sct

* Based on observations carried out at the European Southern Observatory, La Silla, Chile under proposals number 62-I-0533, 63-I-0053

Send offprint requests to: V. Ripepi (ripepi@na.astro.it)

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© European Southern Observatory (ESO) 2000

Online publication: March 21, 2000
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