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Browsing by Author "Mondal, Chayan"

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A tale of two nearby dwarf irregular galaxies WLM and IC 2574: As revealed by UVIT

Mondal, Chayan; Subramaniam, A; George, Koshy (Indian Academy of Sciences, 2021-10)

We present an ultra-violet study of two nearby dwarf irregular galaxies WLM and IC 2574, using the Far-UV and Near-UV data from the Ultra-Violet Imaging Telescope (UVIT). We used the F148W band Far-UV images and identified ...
Tracing the outer disk of NGC 300: an ultraviolet view

Mondal, Chayan; Subramaniam, A; George, K (Indian Academy of Sciences, 2019-07-11)

We present an ultra-violet (UV) study of the galaxy NGC 300 using GALEX far-UV (FUV) and near-UV (NUV) observations. We studied the nature of UV emission in the galaxy and correlated it with optical, H I and mid-infrared ...
Tracing young star-forming clumps in the nearby flocculent spiral galaxy NGC 7793 with UVIT imaging

Mondal, Chayan; Subramaniam, A; George, Koshy; Postma, Joseph E; Subramanian, S; Barway, Sudhanshu (IOP Publishing, 2021-03-10)

Star formation in galaxies is a hierarchical process with a wide range of scales, from smaller clusters to larger stellar complexes. Here, we present an ultra-violet imaging study of the nearby flocculent spiral galaxy NGC ...
Unravelling the post-collision properties of the Cartwheel galaxy: A MUSE exploration of its bar and inner region

Mondal, Chayan; Barway, Sudhanshu (EDP Sciences, 2024-01)

Aims. We aim to investigate the characteristics of the bar and inner disc in the collisional ring galaxy Cartwheel. Methods. We used integral field unit (IFU) observations from the Multi-Unit Spectroscopic Explorer (MUSE) ...
UOCS. V. UV study of the old open cluster NGC 188 using AstroSat

Sharmila Rani; Subramaniam, A; Sindhu Pandey; Snehalata Sahu; Mondal, Chayan; Pandey, G (Indian Academy of Sciences, 2021-10)

We present the UV photometry of the old open cluster NGC188 obtained using images acquired with Ultraviolet Imaging Telescope (UVIT) on board the AstroSat satellite, in two far-UV (FUV) and one near-UV (NUV) filters. UVIT ...
UVIT imaging of WLM: demographics of star-forming regions in the nearby dwarf irregular galaxy

Mondal, Chayan; Subramaniam, A; George, K (IOP Publishing, 2018-09)

We present a study of star-forming regions and their demographics in the nearby dwarf irregular galaxy WLM using Ultraviolet Imaging Telescope (UVIT) multiband observations in three filters, F148W, N245M, and N263M. We ...
UVIT observations of the star-forming ring in NGC 7252: Evidence of possible AGN feedback suppressing central star formation

George, K; Joseph, P; Mondal, Chayan; Devaraj, A; Subramaniam, A; Stalin, C. S; Cote, P; Ghosh, S. K; Hutchings, J. B; Mohan, Rekhesh; Postma, J; Sankarasubramanian, K; Sreekumar, P; Tandon, S. N (EDP Sciences, 2018-05)

Context. Some post-merger galaxies are known to undergo a starburst phase that quickly depletes the gas reservoir and turns it into a red-sequence galaxy, though the details are still unclear. Aims. Here we explore the ...
UVIT view of Centaurus A: a detailed study on positive AGN feedback

Joseph, P; Sreekumar, P; Stalin, C. S; Paul, K. T; Mondal, Chayan; George, Koshy; Mathew, Blesson (Oxford University Press on behalf of Royal Astronomical Society, 2022-10)

Supermassive black holes at the centre of active galactic nuclei (AGNs) produce relativistic jets that can affect the star formation characteristics of the AGN hosts. Observations in the ultraviolet (UV) band can provide ...

Browsing by Author "Mondal, Chayan"

Browsing by Author "Mondal, Chayan"

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