16 papers
Clump Migration in Disk Galaxies: Revisiting Chandrasekhar's Dynamical Friction
Pushpak Pandey, Kanak Saha
Massive stellar clumps are thought to migrate toward galactic centers through dynamical friction, contributing to bulge growth and the structural evolution of disk galaxies. While…
Detection and Properties of Lyman Break Galaxies at in GOODS-North
Bibhuprasad Mishra, Kanak Saha, Divya Pandey +1
Lyman Break Galaxies (LBGs) are actively star-forming galaxies identified through their characteristic rest-frame ultraviolet spectral break, making them powerful probes of galaxy…
Structural and dynamical properties of Tidal dwarf galaxies in the tails and bridge of the Guitar galaxy Arp 105
Jyoti Prakash, Kanak Saha
We present a multi-wavelength (far-ultraviolet to infrared) analysis of two tidal dwarf galaxy (TDG) candidates and a tidal bridge in the interacting system Arp 105 at …
Deep far-UV observations of the ELAIS N1 field using AstroSat: Source catalogue, spectral energy distribution modelling and star formation
Pranjal Chaturvedi, Akriti Sinha, Abhirup Datta +1
We present a far-ultraviolet (FUV) photometric study of the ELAIS N1 deep field using the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat, observed in the F154W filter ($λ_…
The Kormendy Relation in the First Billion Years: Evidence from
Anshuman Borgohain, Kanak Saha
Galaxy scaling relations encode key information about the structural, dynamical, and mass assembly histories of galaxies, and provide constraints on galaxy formation models as well…
Long-Term Dynamical Evolution and Ejection of Near-Earth Asteroids
Chetan Abhijnanam Bora, Badam Singh Kushvah, Kanak Saha
Long-term integrations of asteroid orbits with high-accuracy numerical integrators are essential for understanding dynamical evolution and ejection from the Solar System, but are c…