erratum: No stellar p-mode oscillations in space-based photometry of Procyon
نویسندگان
چکیده
منابع مشابه
New limit on the p-mode oscillations of Procyon obtained by Fourier transform seismometry
The Fourier transform spectrometer based at the CFH telescope was used as a stellar accelerometer in a new seismometric mode. One fringe at a selected path difference of the interferogram produced by the flux of a star through a bandpass chosen in the near infrared is continuously scanned. Its phase is measured and translated directly into velocity with an absolute calibration, providing a sens...
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We report evidence for the granulation signal in the star Procyon A, based on two photometric time series from the star tracker on the WIRE satellite. The power spectra show evidence of excess power around 1mHz, consistent with the detection of p-modes reported from radial velocity measurements. We see a significant increase in the noise level below 3mHz, which we interpret as the granulation s...
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As a part of an ongoing program to explore the signature of p-modes in solar-like stars by means of high-resolution absorption line spectroscopy, we have studied four stars (α CMi, η Cas A, ζ Her A and β Vir). We present here new results from two-site observations of Procyon A acquired over twelve nights in 1999. Oscillation frequencies for l=1 and 0 (or 2) p-modes are detected in the power spe...
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The aim of this paper is to discuss the possible stellar origin of the observed excess power presented in Martic et al. (1999) by comparing these observational data with theoretical predictions and numerical simulations. Stellar models are calculated for Procyon A with appropriate physics for this star and with the revised astrometric mass (1.46 ± 0.04) M found by Girard (1998). For these model...
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For the detailed study of certain large structure stellar systems, such as globular clusters or nearby galaxies, sophisticated quantitative image analysis techniques are fundamental. A particularly interesting and challenging case is the investigation of star formation conditions and chemical content at the cores of glob-ular clusters. High accuracy photometry is needed in elds with thousands o...
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ژورنال
عنوان ژورنال: Nature
سال: 2004
ISSN: 0028-0836,1476-4679
DOI: 10.1038/nature02812