SIMBAD references

2012MNRAS.422.3535B - Mon. Not. R. Astron. Soc., 422, 3535-3545 (2012/June-1)

Spectroscopic pulsational frequency identification and mode determination of γ Doradus star HD 135825.

BRUNSDEN E., POLLARD K.R., COTTRELL P.L., WRIGHT D.J., DE CAT P. and KILMARTIN P.M.

Abstract (from CDS):

We present the mode identification of frequencies found in spectroscopic observations of the γ Doradus star HD 135825. Four frequencies were successfully identified: 1.3150±0.0003, 0.2902±0.0004, 1.4045 ± 0.0005 and 1.8829±0.0005/d. These correspond to (l, m) modes of (1, 1), (2, -2), (4, 0) and (1, 1), respectively. Additional frequencies were found but they were below the signal-to-noise ratio limit of the Fourier spectrum and not suitable for mode identification. The rotational axis inclination and v sin i of the star were determined to be 87° (nearly edge-on) and 39.7 km/s (moderate for γ Doradus stars), respectively. A simultaneous fit of these four modes to the line profile variations in the data gives a reduced χ2 of 12.7. We confirm, based on the frequencies found, that HD 135825 is a bona fide γ Doradus star.

Abstract Copyright: 2012 The Author Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): line: profiles - techniques: spectroscopic - stars: individual: HD 135825 - stars: oscillations - stars: variables: general

Simbad objects: 6

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