218 citations · 499 across the 20 of their papers we have counts for
21 papers
PAH emission from star-forming and quiescent galaxies at probed by JWST/MIRI
Chayan Mondal, Chian-Chou Chen, Kanak Saha +4
We investigate emission from polycyclic aromatic hydrocarbon (PAH) dust molecules in 224 MIRI-selected star-forming and quiescent galaxies at in the GOODS-South field u…
The AstroSat UV Deep Field North: The IRX- relation for the UV-selected galaxies at 0.5-0.7
Chayan Mondal, Kanak Saha
The relation between the observed UV continuum slope () and the infrared excess (IRX) is used as a powerful probe to understand the nature of dust attenuation law in high-redshi…
Simultaneous FUV and NUV observations of T Tauri stars with UVIT/AstroSat: probing accretion process in young stars
Prasanta K. Nayak, Mayank Narang, P. Manoj +4
We present results from simultaneous FUV and NUV observations of T-Tauri stars (TTSs) in the Taurus molecular cloud with UVIT/AstroSat. This is the very first UVIT study of TTSs. F…
Study of Star-formation in Dual Nuclei Galaxies using UVIT observations
K. Rubinur, M. Das, P. Kharb +3
We have used the Ultraviolet Imaging Telescope (UVIT) aboard AstroSat to study star formation in a sample of nine dual nuclei galaxies with separations ~11 kpc, which is an expecte…
Observed UV continuum slopes () of galaxies at in the GOODS-north field
Chayan Mondal, Kanak Saha, Rogier A. Windhorst +1
We estimate the UV continuum slope () of 465 galaxies (with luminosities of 0.028 3.3 ) in the Great Observatories Origins Survey (GOODS) Northern field in th…
Smallest scale clumpy star formation in Stephan's Quintet revealed from UV and IR imaging
Prajwel Joseph, Koshy George, Smitha Subramanian +2
The spatial distribution and physical sizes of star forming clumps at the smallest scales provide valuable information on hierarchical star formation (SF). In this context, we repo…
UVIT view of Centaurus A; a detailed study on positive AGN feedback
Prajwel Joseph, P. Sreekumar, C. S. Stalin +4
$\require{mediawiki-texvc}$ Supermassive black holes at the centre of active galactic nuclei (AGN) produce relativistic jets that can affect the star formation characteristics of t…
A tale of two nearby dwarf irregular galaxies WLM and IC 2574 -- as revealed by UVIT
Chayan Mondal, Annapurni Subramaniam, Koshy George
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 t…
UVIT-HST-Gaia-VISTA study of KRON 3 in the Small Magellanic Cloud: A cluster with an extended red clump in UV
P. K. Nayak, A. Subramaniam, S. Subramanian +6
We have demonstrated the advantage of combining multi-wavelength observations, from the ultraviolet (UV) to near-infrared, to study Kron 3, a massive star cluster in the Small Mage…
Tracing young star-forming clumps in the nearby flocculent spiral galaxy NGC 7793 with UVIT imaging
Chayan Mondal, Annapurni Subramaniam, Koshy George +3
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 o…
UOCS. V. UV study of the old open cluster NGC 188 using AstroSat
Sharmila Rani, Annapurni Subramaniam, Sindhu Pandey +3
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…
More insights into bar quenching. Multi-wavelength analysis of four barred galaxies
Koshy George, P. Joseph, C. Mondal +3
The underlying nature of the process of star formation quenching in the central regions of barred disc galaxies that is due to the action of stellar bar is not fully understood. We…
Tracing the outer disk of NGC 300: An ultraviolet view
Chayan Mondal, Annapurni Subramaniam, Koshy George
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 correlat…
UVIT view of dwarf irregular galaxy IC 2574 : Is the star formation triggered due to expanding HI shells?
Chayan Mondal, Annapurni Subramaniam, Koshy George
Star forming dwarf galaxies in the local volume are diverse and are ideal test beds to understand details of star formation in a variety of environments. Here, we present a deep FU…
Insights on bar quenching from a multi-wavelength analysis: The case of Messier 95
Koshy George, P. Joseph, C. Mondal +3
The physical processes related to the effect of bar in the quenching of star formation in the region between the nuclear/central sub-kpc region and the ends of the bar (bar-region)…
UVIT imaging of WLM : Demographics of star forming regions in the nearby dwarf irregular galaxy
Chayan Mondal, Annapurni Subramaniam, Koshy George
We present a study of star forming regions and its demographics in the nearby dwarf irregular galaxy WLM using the Ultra-Violet Imaging Telescope (UVIT) multi band observations in…
Ultra-Violet Imaging Telescope Observations of the Star-Forming Ring in NGC7252: Evidence of Possible AGN Feedback Suppressing Central Star Formation
Koshy George, P. Joseph, C. Mondal +11
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 uncle…
In-orbit Calibrations of the Ultra-Violet Imaging Telescope
S. N. Tandon, Annapurni Subramaniam, V. Girish +22
The Ultra-Violet Imaging Telescope (UVIT) is one of the payloads in ASTROSAT, the first Indian Space Observatory. The UVIT instrument has two 375mm telescopes: one for the far-ultr…
A Hot Companion to a Blue Straggler in NGC188 as Revealed by the Ultra-violet Imaging Telescope (UVIT) on ASTROSAT
Subramaniam Annapurni, Sindhu N., Tandon S. N. +14
We present early results from the Ultra-Violet Imaging Telescope (UVIT) onboard the ASTROSAT observatory. We report the discovery of a hot companion associated with one of the blue…
In-orbit Performance of UVIT and First Results
S. N. Tandon, J. B. Hutchings, S. K. Ghosh +23
The performance of the ultraviolet telescope (UVIT) on-board ASTROSAT is reported. The performance in orbit is also compared with estimates made from the calibrations done on the g…
In-orbit Performance of UVIT on ASTROSAT
Annapurni Subramaniam, Shyam N. Tandon, John Hutchings +23
We present the in-orbit performance and the first results from the ultra-violet Imaging telescope (UVIT) on ASTROSAT. UVIT consists of two identical 38cm coaligned telescopes, one…