Hipparcos calibration of the tip of the Red Giant Branch (2009)
Tabur, Vello, Kiss, Laszlo L., Bedding, Timothy R.
We have detected the tip of the Red Giant Branch (TRGB) in the solar neighborhood using near infrared photometry from the 2MASS and DIRBE catalogs, and revised Hipparcos parallaxes. We confirm that...
SPITZER/IRAC-MIPS Survey of NGC2451A and B: Debris Disks at 50-80 million years (2009)
Balog, Zoltan, Kiss, Laszlo L., Vinko, Jozsef, Rieke, G. H., Muzerolle, James, Gaspar, Andras, ...
We present a Spitzer IRAC and MIPS survey of NGC 2451 A and B, two open clusters in the 50-80 Myr age range. We complement these data with extensive ground-based photometry and spectroscopy to...
Periodicities in the high-mass X-ray binary system RX J0146.9+6121/LS I+61 235 (2008)
Sarty, Gordon E., Kiss, Laszlo L., Huziak, Richard, Catalan, Lionel J. J., Luciuk, Diane, Crawford, Timothy R., ...
The high-mass X-ray binary RX J0146.9+6121, with optical counterpart LS I+61 235 (V831 Cas), is an intriguing system on the outskirts of the open cluster NGC 663. It contains the slowest X-ray pulsar...
Arentoft, Torben, Kjeldsen, Hans, Bedding, Timothy R., Bazot, Michael, Christensen-Dalsgaard, Joergen, Dall, Thomas H., ...
We have carried out a multi-site campaign to measure oscillations in the F5 star Procyon A. We obtained high-precision velocity observations over more than three weeks with eleven telescopes, with...
The amplitude of solar oscillations using stellar techniques (2008)
Kjeldsen, Hans, Bedding, Timothy R., Arentoft, Torben, Butler, R. Paul, Dall, Thomas H., Karoff, Christoffer, ...
The amplitudes of solar-like oscillations depend on the excitation and damping, both of which are controlled by convection. Comparing observations with theory should therefore improve our...
Hans Kjeldsen, Timothy R. Bedding, R. Paul Butler, Jørgen Christensen-dalsgaard, Laszlo L. Kiss, Chris Mccarthy, ...
We have made velocity observations of the star«Cen B from two sites, allowing us to identify 37 oscillation modes with l = 0–3. Fitting to these modes gives the large and small frequency...
The shape distribution of asteroid families -- evidence for evolution driven by small impacts (2008)
Szabo, Gyula M., Kiss, Laszlo L.
A statistical analysis of brightness variability of asteroids reveals how their shapes evolve from elongated to rough spheroidal forms, presumably driven by impact-related phenomena. Based on the...
Solar-like oscillations in the G2 subgiant beta Hydri from dual-site observations (2007)
Bedding, Timothy R., Kjeldsen, Hans, Arentoft, Torben, Bouchy, Francois, Brandbyge, Jacob, Brewer, Brendon J., ...
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 spectrographs. The oscillation...
Finding Periods in High Mass X-Ray Binaries (2007)
Sarty, Gordon E., Kiss, Laszlo L., Johnston, Helen M., Huziak, Richard, Wu, Kinwah
This is a call for amateur astronomers who have the equipment and experience for producing high quality photometry to contribute to a program of finding periods in the optical light curves of high...
The anomalous Cepheid XZ Ceti (2006)
Szabados, Laszlo, Kiss, Laszlo L., Derekas, Aliz
XZ Ceti is the only known anomalous Cepheid in the Galactic field. Being the nearest and brightest such variable star, a detailed study of XZ Ceti may shed light on the behaviour of anomalous...
Solar-like oscillations in alpha Centauri B (2005)
Kjeldsen, Hans, Bedding, Timothy R., Butler, R. Paul, Christensen-Dalsgaard, Joergen, Kiss, Laszlo L., McCarthy, Chris, ...
We have made velocity observations of the star alpha Cen B from two sites, allowing us to identify 37 oscillation modes with l=0-3. Fitting to these modes gives the large and small frequency...
Period and chemical evolution of SC stars (2004)
Zijlstra, Albert A., Bedding, T. R., Markwick, Andrew J., Loidl-Gautschy, Rita, Tabur, Vello, Alexander, Kristen D., ...
The SC and CS stars are thermal-pulsing AGB stars with C/O ratio close to unity. Within this small group, the Mira variable BH Cru recently evolved from spectral type SC (showing ZrO bands) to CS...
A Tight Upper Limit on Oscillations in the Ap star Epsilon Ursae Majoris from WIRE Photometry (2003)
Retter, Alon, Bedding, Timothy R., Buzasi, Derek L., Kjeldsen, Hans, Kiss, Laszlo L.
Observations of Epsilon UMa obtained with the star tracker on the Wide Field Infrared Explorer (WIRE) satellite during a month in mid-2000 are analyzed. This is one of the most precise photometry of...