7 papers
Bar-driven gas redistribution suppresses star formation in spiral galaxies: Evidence from dust lanes in NGC 3351
Koshy George, Smitha Subramanian
We present observational evidence, based on high-resolution imaging from HST, ALMA, and AstroSat/UVIT, that the redistribution of gas driven by the bar in the face-on spiral galaxy…
Tracing evolutionary pathways of bar-driven quenching in local Universe disc galaxies
D Renu, Smitha Subramanian, Koshy George
Bars play an integral role in regulating star formation (SF) in spiral galaxies, from triggering central starbursts to driving quenching. The diverse SF morphologies observed in lo…
Star formation outside galaxies undergoing gravitational and hydrodynamic interactions: Dust attenuation and the star formation rate
Geethika Santhosh, Rakhi R, Koshy George +3
Galaxies undergo perturbations, either gravitational or hydrodynamic in origin, which can generate extragalactic structures such as rings and tails, where in situ star formation ma…
Two Epochs of VLBI Observations of 8 KISSR Seyfert & LINER Galaxies: Suggestions of Fast and Filamentary Outflows
Preeti Kharb, Anderson Caproni, Salmoli Ghosh +4
We present here the results from a second epoch of phase-referenced VLBA observations of 8 Seyfert and LINER galaxies from the KISSR sample. These sources were chosen based on the…
Dwarf-Dwarf interactions and their influence on star formation : Insights from post-merger galaxies
Rakshit Chauhan, Smitha Subramanian, Deepak A. Kudari +2
Dwarf galaxies dominate the galaxy population across all redshifts, and majority of mergers are expected to occur between them. However, the impact of dwarf-dwarf mergers on star f…
Star formation in interacting galaxy systems: UVIT imaging of NGC 7252 and NGC 5291
Geethika Santhosh, Rakhi R, Koshy George +2
Interactions play a significant role in the formation and evolution of galaxies in the Universe. The galaxy systems, NGC 7252 and NGC 5291 are two nearby interacting systems that a…