Search Publications
Far infrared properties of OH megamaser host galaxies
Wang, Jin; Lv, Bu-Hui; Lin, Ru-Qiu +8 more
The hosts of OH megamaser (OHM) are luminous infrared galaxies (LIRGs), in fact 1/3 of them are ultra-luminous infrared galaxies (ULIRGs), which imply that OHM phenomena should be related to the infrared radiation field. In this paper, we investigate the far infrared (FIR) properties of OHM host galaxies, through detailed infrared data covering br…
Identifying the population of T-Tauri stars in Taurus: UV–optical synergy
Arun, R.; Mathew, Blesson; Ujjwal, K. +9 more
With the third data release of the Gaia mission, Gaia DR3 with its precise photometry and astrometry, it is now possible to study the behavior of stars at a scale never seen before. In this paper, we developed new criteria to identify T-Tauri stars (TTS) candidates using UV and optical color-magnitude diagrams (CMDs) by combining the GALEX and Gai…
Photometric and kinematic studies of open cluster NGC 1027
Sharma, Saurabh; Panwar, Neelam; Kumar, Brijesh +2 more
We present photometric and kinematic analyses of an intermediate-age open cluster NGC 1027 using
HI line analysis of Herbig Ae/Be stars using X-Shooter spectra
Arun, R.; Mathew, Blesson; Shridharan, B. +1 more
Herbig Ae/Be stars are intermediate-mass pre-main sequence stars undergoing accretion through their circumstellar disk. The optical and infrared (IR) spectra of HAeBe stars show HI emission lines belonging to Balmer, Paschen and Brackett series. We used the archival X-Shooter spectra available for 109 HAeBe stars from Vioque et al. (2018) and anal…
PAH emission features in star-forming regions and late type stars
Kumar, Brijesh; Rastogi, Shantanu; Anand, Rahul Kumar
Mid-infrared emission spectra, obtained from ISO archive, of thirteen astrophysical objects as well as computed spectra of 27 polycyclic aromatic hydrocarbon (PAH) molecules are studied. All the objects show strong aromatic infrared band (AIB) features with variations that correlate with object type. Based on AIB peak positions, the features for I…
Study of solar neighborhood open cluster NGC 6475 and 11 possible members B-type stars
Hendy, Y. H. M.; El-Depsey, M. H.; Shokry, Ahmed +2 more
In the present paper, we performed the optical, astrometric and spectroscopic studies for the open star cluster NGC 6475 using Gaia DR3 data. Using the radial density profile, we estimated the radius of the cluster to be equal to 1.44°. It is located at a distance of 279 ± 17 pc and has a service life of 224 ± 26 Myr. The mean proper motions in RA…
Kronberger 55: A candidate for end-dominated collapse scenario
Pandey, Rakesh; Sharma, Saurabh; Dewangan, Lokesh +5 more
Using optical photometric observations from 1.3-m Devasthal Fast Optical Telescope and deep near-infrared (NIR) photometric observations from TANSPEC mounted on 3.6-m Devasthal Optical Telescope, along with the multi-wavelength archival data, we present our study of open cluster Kronberger 55 to understand the star-formation scenario in the region…
Low-luminosity observation of BeXRB source IGR J21347+
Tobrej, Mohammed; Rai, Binay; Ghising, Manoj +2 more
In this paper, we report the results of the detailed temporal and spectral studies of the BeXRB J21347
Survey of H α
Jose, Jessy; Panwar, Neelam; Rishi, C.
Actively accreting young stellar objects show H
Role of magnetic fields in the fragmentation of the Taurus B213 filament into Sun-type star-forming cores
Jose, Jessy; Eswaraiah, Chakali; Jiao, Sihan +1 more
Fragmentation is a key step in the process of transforming clouds (and their substructures, such as filaments, clumps and cores) into protostars. The thermal gas pressure and gravitational collapse are believed to be the primary agents governing this process, referred as thermal Jeans fragmentation. However, the contributions of other factors (suc…