55 citations · 145 across the 10 of their papers we have counts for
10 papers
Polycyclic Aromatic Hydrocarbons in the circumstellar medium of Herbig Ae/Be stars
R. Arun, Blesson Mathew, B. Shridharan +4
We present a comprehensive mid-infrared spectroscopic survey of 124 Herbig Ae/Be stars using newly processed Spitzer/IRS spectra from the newly released CASSISjuice database. Based…
Deciphering the properties of UV upturn galaxies in the Virgo cluster
Krishna R. Akhil, Sreeja S Kartha, Namitha Kizhuprakkat +2
The UV upturn refers to the increase in UV flux at wavelengths shorter than 3000 Å observed in quiescent early-type galaxies (ETGs), which still remains a puzzle. In this study, we…
Disentangling the association of PAH molecules with star formation : Insights from JWST and UVIT
K. Ujjwal, Sreeja S Kartha, Akhil Krishna R +4
Polycyclic Aromatic Hydrocarbons (PAHs) are ubiquitous complex molecules in the interstellar medium and are used as an indirect indicator of star-formation. On the other hand the u…
Identifying the population of T-Tauri stars in Taurus: UV-optical synergy
Prasanta K. Nayak, Mayank Narang, Manoj Puravankara +9
With the third data release of the Gaia mission DR3 with its precise photometry and astrometry, it is now possible to study the behaviour of stars at a scale never seen befo…
DES J024008.08-551047.5:A new member of the polar ring galaxy family
Krishna R. Akhil, Sreeja S Kartha, Blesson Mathew +3
During the visual observations of optical imaging data obtained from the DECaLS, a serendipitous discovery emerged, revealing the presence of a ringed galaxy, DES J024008.08-551047…
What drives the wheels of evolution in NGC 1512? A UVIT study
Thomas Robin, Sreeja S Kartha, Ujjwal Krishnan +4
Environmental and secular processes play a pivotal role in the evolution of galaxies. These can be due to external processes such as interactions or internal processes due to the a…
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…
Analysis of membership probability in nearby young moving groups with Gaia DR2
K. Ujjwal, Sreeja S. Kartha, Blesson Mathew +2
We analyze the membership probability of young stars belonging to nearby moving groups with DR2 data. The sample of 1429 stars were identified from 'The Catalog of…
Are Narrow Line Seyfert 1 Galaxies powered by low mass black holes?
Gayathri Viswanath, C S Stalin, Suvendu Rakshit +4
Narrow line Seyfert 1 galaxies (NLS1s) are believed to be powered by accretion of matter onto low mass black holes (BHs) in spiral host galaxies with BH masses M_BH of 10^6 - 10^8…
On the mass accretion rate and infrared excess in Herbig Ae/Be Stars
R. Arun, Blesson Mathew, P. Manoj +5
The present study makes use of the unprecedented capability of the Gaia mission to obtain the stellar parameters such as distance, age, and mass of HAeBe stars. The accuracy of Gai…