Context. Some Ap stars that have a strong enough magnetic field and a sufficiently low v sini
show spectral lines resolved into their magnetically split components. Aims. We present the …

As a part of in-house instrument developmental activity at ARIES, the 4K× 4K CCD Imager is
designed and developed as a first-light instrument for the axial port of the 3.6-m Devasthal …

Context. The Nainital-Cape Survey is a dedicated ongoing survey program to search for and
study pulsational variability in chemically peculiar (CP) stars to understand their internal …

We have studied over 1600 Am stars at a photometric precision of 1 mmag with SuperWASP
photometric data. Contrary to previous belief, we find that around 200 Am stars are pulsating …

We report the analysis of high-precision space-based photometric and high-resolution
spectroscopic observations of HD 180347. The high-quality light curves from the Transiting …

The success of helioseismology is due to its capability of measuring p-mode oscillations in
the Sun. This allows us to extract information on the internal structure and rotation of the Sun …

A total of 85 CP stars of various types are identified among 814 members of the OriOB1
association. The fraction of CP stars decreases with age for different cluster subgroups: from …

We present a sample of 2700 Ap stars in the Large Sky Area Multi-Object Fiber
Spectroscopic Telescope (LAMOST) DR9 catalog. The candidates are first selected to be in …

Rapidly oscillating chemically peculiar A stars (roAp) pulsate in high-overtone, low degree p-
modes and form a sub-group of chemically peculiar magnetic A stars (Ap). Until recently, the …

We have used precise photometric and high-dispersion spectroscopic observations to study
nine candidate γ Doradus (γ Dor) stars, identified as optically variable comparison stars in …