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...
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...