5–7 Oct 2026
Konkoly Observatory, HUN-REN CSFK
Europe/Budapest timezone

Phase offsets between light and radial velocity curves in Long Period Variable stars

6 Oct 2026, 11:30
15m
Konkoly Observatory, HUN-REN CSFK

Konkoly Observatory, HUN-REN CSFK

10 minute talk

Speaker

Dorota Skowron (Astronomical Observatory, University of Warsaw)

Description

We use radial velocity curves of Long Period Variables from the Gaia
Focused Product Release and match them with optical light curves from
the ASAS-SN project to investigate differences between the phase of
minimum light and the phase of minimum radial velocity. For LSPs, we
find a mean phase offset of -0.18 $\pm$ 0.09 (in phase [0, 1]) between
the radial velocity and light curves, consistent with previous studies
and very similar to that of Mira stars. We also show the phase offsets
for other types of Long Period Variables.

Author

Dorota Skowron (Astronomical Observatory, University of Warsaw)

Co-authors

Patryk Iwanek (Astronomical Observatory, University of Warsaw) Dr Piotr Kołaczek-Szymański (Astronomical Observatory, University of Warsaw)

Presentation materials

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