15 results on '"Bonanno, Alfio"'
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2. A New Helioseismic Constraint on a Cosmic-time Variation of G
3. STELLAR DYNAMO MODELS WITH PROMINENT SURFACE TOROIDAL FIELDS
4. CHROMOSPHERIC EMISSION OF PLANET CANDIDATE HOST STARS: A WAY TO IDENTIFY FALSE POSITIVES
5. ROTATION AND STABILITY OF THE TOROIDAL MAGNETIC FIELD IN STELLAR RADIATION ZONES
6. ASTEROSEISMOLOGY OF THE OPEN CLUSTERS NGC 6791, NGC 6811, AND NGC 6819 FROM 19 MONTHS OFKEPLERPHOTOMETRY
7. CALIBRATING CONVECTIVE PROPERTIES OF SOLAR-LIKE STARS IN THE KEPLER FIELD OF VIEW
8. STABILITY OF THE TOROIDAL MAGNETIC FIELD IN STELLAR RADIATION ZONES
9. ASTEROSEISMIC DIAGRAMS FROM A SURVEY OF SOLAR-LIKE OSCILLATIONS WITH KEPLER
10. A MULTI-SITE CAMPAIGN TO MEASURE SOLAR-LIKE OSCILLATIONS IN PROCYON. II. MODE FREQUENCIES
11. A Multisite Campaign to Measure Solar‐like Oscillations in Procyon. I. Observations, Data Reduction, and Slow Variations
12. Detection of Solar‐like Oscillations in the G5 Subgiant μ Her
13. Compressibility and Local Instabilities of Differentially Rotating Magnetized Gas
14. Covariant flux-limited diffusion theory for an anisotropic source term
15. Detection of Solar-like Oscillations in the G5 Subgiant ? Her
- Abstract
A clear detection of excess of power, providing a substantial evidence for solar-like oscillations in the G5 subgiant m Her, is presented. This star was observed over seven nights with the SARG echelle spectrograph operating with the 3.6 m Italian TNG Telescope, using an iodine absorption cell as a velocity reference. A clear excess of power centered at 1.2 mHz, with peak amplitudes of about 0.9 m s[?]1 in the amplitude spectrum is present. Fitting the asymptotic relation to the power spectrum, a mode identification for the
!["l=0"/]("eq-00001.gif")
l = 0, 1, 2, 3 modes in the frequency range 900-1600 mHz is derived. The most likely value for the large separation turns out to be 56.5 mHz, consistent with theoretical expectations. The mean amplitude per mode ( !["l=0,1"/]("eq-00002.gif")
l = 0,1) at peak power results to be 0.63 ms[?]1, almost 3 times larger than the solar one.
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