SIMBAD references

2003A&A...399..271P - Astronomy and Astrophysics, volume 399, 271-274 (2003/2-3)

Oscillations in the PMS δ Scuti star V346 Ori.

PINHEIRO F.J.G., FOLHA D.F.M., MARCONI M., RIPEPI V., PALLA F., MONTEIRO M.J.P.F.G. and BERNABEI S.

Abstract (from CDS):

We report the discovery of periodicities in the light curve of the Pre-Main Sequence (PMS) Herbig Ae star V346 Ori. We interpret variations in the light curve of the star as the superposition of at least two periodic signals that result from δ Scuti-type stellar oscillations. The computation of linear non-adiabatic radial pulsation models for PMS stars reproduces these periods for a 1.55M star with Teff=7410K and log L/L=0.74 pulsating in the fundamental and in the second overtone. If our assumption of radial oscillations is indeed correct, the star's location on the HR diagram places it at a distance significantly smaller than that of the Orion star forming region, hence raising questions regarding the evolutionary status of V346 Ori. Observations with better time sampling and spanning a longer period of time are needed if the latter question is to be addressed fully.

Abstract Copyright:

Journal keyword(s): stars: evolution - stars: fundamental parameters - stars: oscillations - stars: pre-main sequence - stars: variables: δ Sct - stars: individual: V346 Ori

VizieR on-line data: <Available at CDS (J/A+A/399/271): table1.dat table2.dat>

Simbad objects: 6

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