133 citations · 1.4k across the 47 of their papers we have counts for
38 papers · 1 filter
Strömgren photometric metallicity map of the Magellanic Cloud stars using Gaia DR3--XP spectra
Abinaya O. Omkumar, Maria-Rosa L. Cioni, Smitha Subramanian +3
One important key in understanding a galaxy's evolution is to study the consequences of its past dynamical interactions that influenced its shape. By measuring the metallicity dist…
Investigating the role of bars in quenching star formation using spatially resolved UV-optical colour maps
D. Renu, Smitha Subramanian, Suhasini Rao +1
Bars are ubiquitously found in disc galaxies and are known to drive galaxy evolution through secular processes. However, the specific contribution of bars in suppression of star fo…
Strömgren photometric metallicity of the Small Magellanic Cloud stars using Gaia DR3-XP spectra
Abinaya O. Omkumar, Smitha Subramanian, Maria-Rosa L. Cioni +1
Observational studies have identified several sub-structures in different regions of the Magellanic Clouds, the nearest pair of interacting dwarf satellites of the Milky Way. By st…
UVIT view of NGC 5291: Ongoing star formation in tidal dwarf galaxies at ~ 0.35 kpc resolution
Rakhi R, Geethika Santhosh, Prajwel Joseph +14
NGC 5291, an early-type galaxy surrounded by a giant HI ring, is believed to be formed from collision with another galaxy. Several star forming complexes and tidal dwarf galaxies a…
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…
Understanding the secular evolution of NGC 628 using UVIT
K. Ujjwal, Sreeja S. Kartha, Smitha Subramanian +3
Secular and environmental effects play a significant role in regulating the star formation rate and hence the evolution of the galaxies. Since UV flux is a direct tracer of the sta…
The VMC survey -- XLVI. Stellar proper motions in the centre of the Large Magellanic Cloud
F. Niederhofer, M. -R. L. Cioni, T. Schmidt +7
We present proper motion (PM) measurements within the central region of the Large Magellanic Cloud (LMC) using near-infrared data from the VISTA survey of the Magellanic Cloud syst…
Presence of red giant population in the foreground stellar sub-structure of the Small Magellanic Cloud
Dizna James, Smitha Subramanian, Abinaya O. Omkumar +8
The eastern region of the Small Magellanic Cloud (SMC) is found to have a foreground stellar sub-structure, which is identified as a distance bimodality (12 kpc apart) in the previ…
The VMC survey -- XLIV: Mapping metallicity trends in the Large Magellanic Cloud using near-infrared passbands
Samyaday Choudhury, Richard de Grijs, Kenji Bekki +9
We have derived high-spatial-resolution metallicity maps covering 105~deg across the Large Magellanic Cloud (LMC) using near-infrared passbands from the VISTA Survey of t…
The Nature of Jets in Double-Peaked Emission Line AGN in the KISSR Sample
P. Kharb, S. Subramanian, M. Das +2
Double-peaked emission line AGN (DPAGN) have been regarded as binary black hole candidates. We present here results from parsec-scale radio observations with the Very Long Baseline…
Bar quenching: Evidence from star-formation-rate indicators
Koshy George, Smitha Subramanian
The central regions of star-forming barred spiral galaxies can be devoid of star formation because of the redistribution of gas along the length of the bar. However, there can be g…
Stellar substructures in the periphery of the Magellanic Clouds with the VISTA Hemisphere Survey from the red clump and other tracers
Dalal El Youssoufi, Maria-Rosa L. Cioni, Cameron P. M. Bell +11
We study the morphology of the stellar periphery of the Magellanic Clouds in search of substructure using near-infrared imaging data from the VISTA Hemisphere Survey (VHS). Based o…
The VMC Survey -- XLII. Near-infrared period-luminosity relations for RR Lyrae stars and the structure of the Large Magellanic Cloud
F. Cusano, M. I. Moretti, G. Clementini +11
We present results from an analysis of 29,000 RR Lyrae stars located in the Large Magellanic Cloud (LMC). For these objects, near-infrared time-series photometry from the VI…
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…
The VMC survey -- XLI. Stellar proper motions within the Small Magellanic Cloud
F. Niederhofer, M. -R. L. Cioni, S. Rubele +13
We used data from the near-infrared VISTA survey of the Magellanic Cloud system (VMC) to measure proper motions (PMs) of stars within the Small Magellanic Cloud (SMC). The data ana…
The VMC Survey -- XL. Three-dimensional structure of the Small Magellanic Cloud as derived from red clump stars
B. L. Tatton, J. Th. van Loon, M. -R. L. Cioni +12
Galaxy interactions distort the distribution of baryonic matter and can affect star formation. The nearby Magellanic Clouds are a prime example of an ongoing galaxy interaction pro…
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…
Gaia view of a stellar sub-structure in front of the Small Magellanic Cloud
Abinaya O. Omkumar, Smitha Subramanian, Florian Niederhofer +6
Recent observational studies identified a foreground stellar sub-structure traced by red clump (RC) stars (~ 12 kpc in front of the main body) in the eastern regions of the Small M…
The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- II. The Small Magellanic Cloud
Cameron P. M. Bell, Maria-Rosa L. Cioni, A. H. Wright +23
We present a map of the total intrinsic reddening across ~34 deg of the Small Magellanic Cloud (SMC) derived using optical () and near-infrared (IR; …
The Intriguing Parsec-Scale Radio Structure in the "Offset AGN" KISSR 102
P. Kharb, D. Lena, Z. Paragi +4
We report the detection of an intriguing parsec-scale radio source in the "offset AGN" candidate, KISSR 102. The elliptical host galaxy includes two optical nuclei at a projected s…
X-shaped Radio Galaxies: Optical Properties, Large-scale Environment and Relationship to Radio Structure
Ravi Joshi, Gopal-Krishna, Xiaolong Yang +9
In order to find clues to the origin of the "winged" or "X-shaped" radio galaxies (XRGs) we investigate here the parent galaxies of a large sample of 106 XRGs for optical-radio axe…
The VMC Survey -- XXXIV. Morphology of Stellar Populations in the Magellanic Clouds
Dalal El Youssoufi, Maria-Rosa L. Cioni, Cameron P. M. Bell +11
The Magellanic Clouds are nearby dwarf irregular galaxies whose morphologies show different properties when traced by different stellar populations, making them an important labora…
The intrinsic reddening of the Magellanic Clouds as traced by background galaxies -- I. The bar and outskirts of the Small Magellanic Cloud
Cameron P. M. Bell, Maria-Rosa L. Cioni, A. H. Wright +16
We present a method to map the total intrinsic reddening of a foreground extinguishing medium via the analysis of spectral energy distributions (SEDs) of background galaxies. In th…