IIAP Publications: Recent submissions

  • Discovery of a Barium Blue Straggler Star in M67 and “Sighting” of Its White Dwarf Companion 
    Pal, Harshit; Subramaniam, A; Reddy, A. B. S; Jadhav, Vikrant V (American Astronomical Society, 2024-08-01)
    We report the discovery of a barium blue straggler star (BSS) in M67, exhibiting enhancements in slow neutron-capture (s-)process elements. Spectroscopic analysis of two BSSs (WOCS 9005 & WOCS 1020) and four stars located ...
  • Study of a Red Clump Giant, KIC 11087027, with High Rotation and Strong Infrared Excess—Evidence of Tidal Interaction for High Lithium Abundance 
    Singh, Raghubar; Mallick, Anohita; Reddy, B. E; Pandey, Jeewan C; Zhao, Gang (American Astronomical Society, 2024-08-10)
    This Letter presents results from Kepler photometric light curves and a high-resolution spectroscopic study of a super-Li-rich giant KIC11087027. Using the light-curve analysis, we measured the star's rotational period ...
  • A comparative analysis of the active galactic nucleus and star formation characteristics of broad- and narrow-line Seyfert 1 galaxies 
    Kshama, S. K; Stalin, C. S; Rakshit, S; Mountrichas, G; Wylezalek, D; Sagar, R; Kissler-Patig, M (EDP Sciences, 2024-08)
    We report here our comparative analysis of the active galactic nucleus (AGN) and star formation (SF) characteristics of a sample of narrow-line Seyfert 1 (NLS1) and broad-line Seyfert 1 (BLS1) galaxies. Our sample consisted ...
  • AstroSat/UVIT Study of the Diffuse Ultraviolet Radiation in the Dwarf Galaxy Holmberg II 
    Bordoloi, Olag Pratim; Ananthamoorthy, B; Shalima, P; Safonova, M; Bhattacharya, Debbijoy; Shchekinov, Yuri A; Gogoi, Rupjyoti (IOP Publishing, 2024-07)
    We present measurements of diffuse ultraviolet (UV) emission in the dwarf irregular galaxy Holmberg II obtained with the Ultra Violet Imaging Telescope (UVIT) instrument onboard AstroSat, India's first multiwavelength space ...
  • Probing Velocity Dispersion Inside Coronal Mass Ejections: New Insights on Their Initiation 
    Majumdar, Satabdwa; D Huys, Elke; Mierla, Marilena; Vashishtha, Nitin; Talpeanu, Dana-Camelia; Banerjee, D; Reiss, Martin A (American Astronomical Society, 2024-07-20)
    This work studies the kinematics of the leading edge and the core of six coronal mass ejections (CMEs) in the combined field of view of Sun Watcher using Active Pixel System detector and Image Processing (SWAP) on board ...
  • PDS 70 unveiled by star-hopping: Total intensity, polarimetry, and millimeter imaging modeled in concert 
    Wahhaj, Z; Benisty, M; Ginski, C; Swastik, C; Arora, S; van Holstein, R. G; De Rosa, R; Yang, B; Bae, J; Ren, B (EDP Sciences, 2024-07)
    Context. Most ground-based direct-imaging planet search campaigns use angular differential imaging that distorts the signal from extended sources, such as protoplanetary disks. In the case of the young system PDS 70, for ...
  • Low-frequency solar radio type II bursts and their association with space weather events during the ascending phase of solar cycle 25 
    Ndacyayisenga, Theogene; Uwamahoro, Jean; Uwamahoro, Jean Claude; Okoh, Daniel Izuikedinachi; Sasikumar Raja, K; Rabiu, Akeem Babatunde; Kwisanga, Christian; Monstein, Christian (Copernicus Publications on behalf of the European Geosciences Union, 2024-07)
    Type II solar radio bursts are signatures of the coronal shocks and, therefore, particle acceleration events in the solar atmosphere and interplanetary space. Type II bursts can serve as a proxy to provide early warnings ...
  • Herschel investigation of cores and filamentary structures in L1251 located in the Cepheus flare 
    Dewan, Divyansh; Archana Soam; Zhang, Guo-Yin; Lasrado, Akhil; Singh, Saikhom Pravash; Lee, Chang Won (Indian Academy of Sciences, 2024-12)
    Abstract. Context: Molecular clouds are the prime locations of star formation. These clouds contain filamentary structures and cores which are crucial in the formation of young stars. Aims: In this work, we aim to quantify ...
  • UVIT Study of the MAgellanic Clouds (U-SMAC) – I. Recent star formation history and kinematics of the Shell region in the north-eastern Small Magellanic Cloud 
    Hota, Sipra; Subramaniam, A; Dhanush, S. R; Cioni, Maria-Rosa L; Subramanian, S (Oxford University Press on behalf of Royal Astronomical Society, 2024-07)
    The interactions between the Magellanic Clouds significantly affect the shape and distribution of the young stellar population, particularly in the periphery of the Small Magellanic Cloud (SMC). We present the first far-UV ...
  • Gas Kinematics and Dynamics of Carina Pillars: A Case Study of G287.76-0.87 
    Tung, Ngo-Duy; Tram, Le Ngoc; Archana Soam; Reach, William T; Das, Edwin; Chambers, Ed; Mathew, Blesson; Richter, Heiko (American Astronomical Society, 2024-07-10)
    We study the kinematics of a pillar, namely G287.76-0.87, using three rotational lines of 12CO(5-4), 12CO(8-7), 12CO(11-10), and a fine structure line of [O i] 63 μm in southern Carina observed by SOFIA/GREAT. This pillar ...
  • Host-star Properties of Hot, Warm, and Cold Jupiters in the Solar Neighborhood from Gaia Data Release 3: Clues to Formation Pathways 
    Banerjee, Bihan; Narang, Mayank; Manoj, P; Henning, Thomas; Tyagi, Himanshu; Surya, Arun; Nayak, Prasanta K; Tripathi, Mihir (American Astronomical Society, 2024-07-01)
    Giant planets exhibit diverse orbital properties, hinting at their distinct formation and dynamic histories. In this paper, using Gaia Data Release 3 (DR3), we investigate if and how the orbital properties of Jupiters are ...
  • Numerous bidirectionally propagating plasma blobs near the reconnection site of a solar eruption 
    Hou, Zhenyong; Tian, Hui; Madjarska, Maria S; Chen, Hechao; Samanta, T; Bai, Xianyong; Li, Zhentong; Su, Yang; Chen, Wei; Deng, Yuanyong (EDP Sciences, 2024-07)
    A current sheet is a common structure involved in solar eruptions. However, it is observed in a minority of the events, and the physical properties of its fine structures during a solar eruption are rarely investigated. ...
  • Data processing of visible emission line coronagraph onboard ADITYA-L1 
    Priyal, M; Singh, J; Prasad, B. R; Sumana, Chavali; Kumar, Varun; Mishra, Shalabh; Venkata, S. N; Sindhuja, G; Sasikumar Raja, K; Amit Kumar; Krishnan, Sanal; Hegde, Bhavana; Utkarsha, D; Natarajan, V; Somasundaram, P. K; Nagabhushana, S; Kamath, P. U; Kathiravan, S; Mani, V. T; Basavaraju, Suresh; Chavan, Rajkumar; Vemareddy, P; Ravindra, B; Rajaguru, S. P; Nagaraju, K; Mishra, Wageesh; Joshi, Jayant; Samanta, T; Chatterjee, Piyali; Kathiravan, C; Ramesh, R (Elsevier B.V, 2024-07-01)
    ADITYA-L1 is India's first dedicated mission to observe the Sun and its atmosphere from a halo orbit around L1 point. Visible emission line coronagraph (VELC) is the primary payload on board Aditya-L1 to observe the Sun’s ...
  • Photo-ionization structures of Planetary Nebula IC 2003 with [WR] central star 
    Khushbu, K; Muthumariappan, C (Elsevier B.V, 2024-08-01)
    We present ionization structures of IC 2003, a planetary nebula with [WR] central star, using a 1-D dusty photo-ionization code: ”CLOUDY 17.03”. The photo-ionization model is constrained by archival UV emission line fluxes, ...
  • First measurements of the airglow emissions from Kolhapur using an in-house developed Fabry–Perot interferometer 
    Mahavarkar, Prasanna; Sriram, S; Joshi, Bhagyashree; Gurubaran, S (IOP Publishing, 2024-06)
    First-time airglow observations of the nighttime thermospheric wind from an in-house developed ground-based Fabry–Perot Interferometer are recorded from the Kolhapur location of India. This was the first attempt to build ...
  • A Comprehensive Kinematic Model of the Large Magellanic Cloud Disk from Star Clusters and Field Stars using Gaia DR3: Tracing the Disk Characteristics, Rotation, Bar, and Outliers 
    Dhanush, S. R; Subramaniam, A; Subramanian, S (American Astronomical Society, 2024-06-20)
    The internal kinematics of the Large Magellanic Cloud (LMC) disk have been modeled by several studies using different tracers with varying coverage, resulting in a range of parameters. Here, we model the LMC disk using 1705 ...
  • Turbulence and magnetic fields in star formation 
    Archana Soam; Eswaraiah, Chakali; Seta, Amit; Dewangan, Lokesh; Maheswar, G (Indian Academy of Sciences, 2024-06)
    Molecular clouds are prime locations to study the process of star formation. These clouds contain filamentary structures and cores, which are crucial sites for the formation of young stars. The star-formation process has ...
  • Age Analysis of Extrasolar Planets: Insight from Stellar Isochrone Models 
    Swastik, C; Banyal, R. K; Narang, Mayank; Unni, Athira; Sivarani, T (American Astronomical Society, 2024-06-03)
    There is growing evidence from stellar kinematics and galactic chemical evolution suggesting that giant planets (MP 0.3MJ) are relatively young compared to the most commonly occurring population of small planets (MP < ...
  • Science with the Daksha high energy transients mission 
    Bhalerao, Varun; Sawant, Disha; Pai, Archana; Tendulkar, Shriharsh; Vadawale, Santosh; Bhattacharya, Dipankar; Rana, Vikram; Adalja, Hitesh Kumar L; Anupama, G. C; Bala, Suman; Banerjee, Smaranika; Basu, Judhajeet; Belatikar, Hrishikesh; Beniamini, Paz; Bhaganagare, Mahesh; Bhaskar, Ankush; Bhattacharjee, Soumyadeep; Bose, Sukanta; Cenko, Brad; Chanda, Mehul Vijay; Dewangan, Gulab; Dixit, Vishal; Dutta, Anirban; Gawade, Priyanka; Ghodgaonkar, Abhijeet; Goyal, Shiv Kumar; Gunasekaran, Suresh; Hemanth, Manikantan; Hotokezaka, Kenta; Iyyani, Shabnam; Guruprasad, P. J; Kasliwal, Mansi; Koyande, Jayprakash G; Kulkarni, Salil; Kutty, APK; Ladiya, Tinkal; Mahapatra, Suddhasatta; Marla, Deepak; Mate, Sujay; Mehla, Advait; Mithun, N. P. S; More, Surhud; Mote, Rakesh; Mukherjee, Dipanjan; Narang, Sanjoli; Narendranath, Shyama; Nema, Ayush; Nimbalkar, Sudhanshu; Nissanke, Samaya; Palit, Sourav; Patel, Jinaykumar; Patel, Arpit; Paul, Biswajit; Pradeep, Priya; Ramachandran, Prabhu; Roy, Kinjal; Saiguhan, B.S. Bharath; Saji, Joseph; Saleem, M; Saraogi, Divita; Sastry, Parth; Shanmugam, M; Sharma, Piyush; Shetye, Amit; Singh, Nishant; Singh, Shreeya; Singhal, Akshat; Sreekumar, S; Sridhar, Srividhya; Srinivasan, Rahul; Tallur, Siddharth; Tiwari, Neeraj K; Vadladi, Amrutha Lakshmi; Vaishnava, C.S; Vishwakarma, Sandeep; Waratkar, Gaurav (Springer Nature, 2024-06)
    We present the science case for the proposed Daksha high energy transients mission. Daksha will comprise of two satellites covering the entire sky from 1 keV to > 1 MeV. The primary objectives of the mission are to ...
  • A VLBA-uGMRT search for candidate binary black holes: study of six X-shaped radio galaxies with double-peaked emission lines 
    Sebastian, Biny; Caproni, Anderson; Kharb, Preeti; Nayana, A. J; Ali, Arshi; Rubinur, K; O Dea, Christopher P; Baum, Stefi; Nandi, Sumana (Oxford University Press on behalf of Royal Astronomical Society, 2024-06)
    Identifying methods to discover dual active galactic nucleus (AGN) has proven to be challenging. Several indirect tracers have been explored in the literature, including X/S-shaped radio morphologies and double-peaked (DP) ...

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