activity
19932026
most citedGravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars

612 citations · 25.5k across the 406 of their papers we have counts for

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Showing 2007Show all

14 papers · 1 filter

astro-ph2007★ 3 cited

Oscillations in Procyon A: First results from a multi-site campaign

S. Hekker, T. Arentoft, H. Kjeldsen +45

Procyon A is a bright F5IV star in a binary system. Although the distance, mass and angular diameter of this star are all known with high precision, the exact evolutionary state is…

astro-ph2007★ 50 cited

The Keck Aperture Masking Experiment: Multi-Wavelength Observations of 6 Mira Variables

H. C. Woodruff, P. G. Tuthill, J. D. Monnier +5

The angular diameters of six oxygen rich Mira-type long-period variables have been measured at various near-infrared (NIR) wavelengths using the aperture masking technique in an ex…

astro-ph2007★ 16 cited

A search for solar-like oscillations in K giants in the globular cluster M4

S. Frandsen, H. Bruntt, F. Grundahl +10

To expand the range in the colour-magnitude diagram where asteroseismology can be applied, we organized a photometry campaign to find evidence for solar-like oscillations in giant…

astro-ph2007★ 39 cited

The radius and mass of the subgiant star bet Hyi from interferometry and asteroseismology

J. R. North, J. Davis, T. R. Bedding +7

We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of beta Hydri. This star is a nearby G2 subgiant whose mean density was recently me…

astro-ph2007★ 36 cited

Solar-like oscillations in the metal-poor subgiant nu Indi: II. Acoustic spectrum and mode lifetime

F. Carrier, H. Kjeldsen, T. R. Bedding +7

Convection in stars excites resonant acoustic waves which depend on the sound speed inside the star, which in turn depends on properties of the stellar interior. Therefore, asteros…

astro-ph2007★ 4 cited

Radial velocities of five globular clusters obtained with AAOmega

P. Székely, L. L. Kiss, K. Szatmáry +3

Using the recently commissioned multi-object spectrograph AAOmega on the 3.9m AAT we have obtained medium-resolution near-infrared spectra for 10,500 stars in and around five south…

astro-ph2007★ 33 cited

Observations of solar-like oscillations

Timothy R. Bedding, Hans Kjeldsen

There has been tremendous progress in observing oscillations in solar-type stars. In a few short years we have moved from ambiguous detections to firm measurements. We briefly revi…

astro-ph2007★ 31 cited

Multisite campaign on the open cluster M67. III. Delta Scuti pulsations in the blue stragglers

H. Bruntt, D. Stello, J. C. Suarez +20

We have made an asteroseismic analysis of the variable blue stragglers in the open cluster M67. The data set consists of photometric time series from eight sites using nine 0.6-2.1…

astro-ph2007★ 17 cited

A wide-field kinematic survey for tidal tails around five globular clusters

L. L. Kiss, P. Szekely, T. R. Bedding +2

Using the AAOmega instrument of the Anglo-Australian Telescope, we have obtained medium-resolution near-infrared spectra of 10,500 stars in two-degree fields centered on the galact…

astro-ph2007★ 41 cited

Eclipsing binaries in the MACHO database: New periods and classifications for 3031 systems in the Large Magellanic Cloud

A. Derekas, L. L. Kiss, T. R. Bedding

Eclipsing binaries offer a unique opportunity to determine fundamental physical parameters of stars using the constraints on the geometry of the systems. Here we present a reanalys…

astro-ph2007★ 115 cited

Solar-like oscillations in the G2 subgiant beta Hydri from dual-site observations

Timothy R. Bedding, Hans Kjeldsen, Torben Arentoft +16

We have observed oscillations in the nearby G2 subgiant star beta Hyi using high-precision velocity observations obtained over more than a week with the HARPS and UCLES spectrograp…

astro-ph2007★ 1 cited

Asteroseismology from solar-like oscillations

Timothy R. Bedding, Hans Kjeldsen

There has been tremendous progress in observing oscillations in solar-type stars. In a few short years we have moved from ambiguous detections to firm measurements. We briefly revi…

astro-ph2007★ 1 cited

Solar-like oscillations in open cluster stars

D. Stello, H. Bruntt, T. Arentoft +19

Asteroseismology of stellar clusters is potentially a powerful tool. The assumption of a common age, distance, and chemical composition provides constraints on each cluster member,…

astro-ph2007★ 64 cited

Multisite campaign on the open cluster M67. II. Evidence for solar-like oscillations in red giant stars

D. Stello, H. Bruntt, H. Kjeldsen +19

Measuring solar-like oscillations in an ensemble of stars in a cluster, holds promise for testing stellar structure and evolution more stringently than just fitting parameters to s…