Context. The low spin rates measured for solar-type stars at an age of a few Myr (~ 10% of
the break-up velocity) indicate that some mechanism of angular momentum regulation must …

The classical T Tauri star (CTTS) stage is a critical phase of the star and planet formation
process. In an effort to better understand the mass accretion processes, which can dictate …

We present results from an ongoing multiwavelength radial velocity (RV) survey of the
Taurus–Auriga star-forming region as part of our effort to identify pre-main-sequence giant …

In searches for low-mass companions to late-type stars, correlation between radial velocity
variations and line bisector slope changes indicates contamination by large starspots. Two …

Abstract Microvariability & Oscillations of STars (MOST) and All Sky Automated Survey
(ASAS) observations have been used to characterize photometric variability of TW Hya on …

We have used archival CCD data, Fourier analysis, and self-correlation analysis to study the
photometric time variability of 162 T Tauri stars and related objects, including Herbig Ae/Be …

To explore young star variability on a large range of timescales, we have used the MOST
satellite to obtain 24 days of continuous, sub-minute cadence, high-precision optical …

Spectral and photometric variability of the Classical T Tauri stars RY Tau and SU Aur from
2013 to 2022 is analysed. We find that in SU Aur the H α line's flux at radial velocity RV …

The projected stellar rotational velocity (vi sin) is critical for our understanding of processes
related to the evolution of angular momentum in pre-main-sequence stars. We present vi sin …

We present time series photometry of 57 variable stars in the cluster region NGC 7380. The
association of these variable stars with the cluster NGC 7380 has been established on the …