346 citations · 1.1k across the 21 of their papers we have counts for
21 papers
Harmonic phase diagnostics of long secondary periods. Testing predictions of oscillatory convective dipole modes in the OGLE sample
Benjamin Courtney-Barrer, Xavier Haubois, Michael Ireland +1
Long secondary periods (LSPs) in luminous red giants remain the only major class of long-period stellar variability without a secure physical origin. Competing hypotheses include b…
Period-luminosity diagram of long period variables in the Magellanic Clouds. New aspects revealed from Gaia Data Release 2
T. Lebzelter, M. Trabucchi, N. Mowlavi +4
Context: The period-luminosity diagram (PLD) has proven to be a powerful tool for studying populations of pulsating red giants. Gaia Data Release 2 (DR2) provides a large data set…
A new method to identify subclasses among AGB stars using Gaia and 2MASS photometry
T. Lebzelter, N. Mowlavi, P. Marigo +4
Aims: We explore the wealth of high quality photometric data provided by data release 2 of the Gaia mission for long period variables (LPVs) in the Large Magellanic Cloud. Our goal…
What causes the large extensions of red-supergiant atmospheres? Comparisons of interferometric observations with 1-D hydrostatic, 3-D convection, and 1-D pulsating model atmospheres
B. Arroyo-Torres, M. Wittkowski, A. Chiavassa +6
We present the atmospheric structure and the fundamental parameters of three red supergiants, increasing the sample of RSGs observed by near-infrared spectro-interferometry. Additi…
Strange pulsation modes in luminous red giants
P. R. Wood, E. A. Olivier
We show that the spectrum of radial pulsation modes in luminous red giants consists of both normal modes and a second set of modes with periods similar to those of the normal modes…
A search for long period variables in Globular Clusters: M22 and IC4499
Anand Sahay, Thomas Lebzelter, Peter Wood
We report on the results of a long time photometric monitoring of the two metal poor Galactic globular clusters M22 and IC4499 searching for long period variables (LPVs) on the upp…