Extremely Large Telescope

Research group

Research theme

Sub department

About

Related research groups

FiberPol-6D: Spectropolarimetric Integral Field mode for the SAAO 1.9 m Telescope using fibers

ArXiv 2406.19124 (2024)

Authors:

Siddharth Maharana, Sabyasachi Chattopadhyay, Matthew Bershady
Details from ArXiV

Systems design, assembly, integration and lab testing of WALOP-South Polarimeter

ArXiv 2406.19428 (2024)

Authors:

Siddharth Maharana, AN Ramaprakash, Chaitanya Rajarshi, Pravin Khodade, Bhushan Joshi, Pravin Chordia, Abhay Kohok, Ramya M Anche, Deepa Modi, John A Kypriotakis, Amit Deokar, Aditya Kinjawadekar, Stephen B Potter, Dmitry Blinov, Hans Kristian Eriksen, Myrto Falalaki, Hitesh Gajjar, Tuhin Ghosh, Eirik Gjerløw, Sebastain Kiehlmann, Ioannis Liodakis, Nikolaos Mandarakas, Georgia V Panopoulou, Vasiliki Pavlidou, Timothy J Pearson, Vincent Pelgrims, Anthony CS Readhead, Raphael Skalidis, Konstantinos Tassis, Namita Uppal, Ingunn K Wehus
Details from ArXiV

Retrieval of the physical parameters of galaxies from WEAVE-StePS-like data using machine learning

(2024)

Authors:

J Angthopo, BR Granett, F La Barbera, M Longhetti, A Iovino, M Fossati, FR Ditrani, L Costantin, S Zibetti, A Gallazzi, P Sánchez-Blázquez, C Tortora, C Spiniello, B Poggianti, A Vazdekis, M Balcells, S Bardelli, CR Benn, M Bianconi, M Bolzonella, G Busarello, LP Cassarà, EM Corsini, O Cucciati, G Dalton, A Ferré-Mateu, R García-Benito, RM González Delgado, E Gafton, M Gullieuszik, CP Haines, E Iodice, A Ikhsanova, S Jin, JH Knapen, S McGee, A Mercurio, P Merluzzi, L Morelli, A Moretti, DNA Murphy, A Pizzella, L Pozzetti, R Ragusa, SC Trager, D Vergani, B Vulcani, M Talia, E Zucca
More details from the publisher
Details from ArXiV

Phase-resolving the absorption signatures of water and carbon monoxide in the atmosphere of the ultra-hot Jupiter WASP-121b with GEMINI-S/IGRINS

(2024)

Authors:

Joost P Wardenier, Vivien Parmentier, Michael R Line, Megan Weiner Mansfield, Xianyu Tan, Shang-Min Tsai, Jacob L Bean, Jayne L Birkby, Matteo Brogi, Jean-Michel Désert, Siddharth Gandhi, Elspeth KH Lee, Colette I Levens, Lorenzo Pino, Peter CB Smith
More details from the publisher

WISDOM Project – XXI. Giant molecular clouds in the central region of the barred spiral galaxy NGC 613: a steep size – linewidth relation

Monthly Notices of the Royal Astronomical Society Oxford University Press 531:4 (2024) 4045-4059

Authors:

Woorak Choi, Martin Bureau, Lijie Liu, Michele Cappellari, Timothy A Davis, Jindra Gensior, Fu-Heng Liang, Anan Lu, Sanghyuk Moon, Ilaria Ruffa, Thomas G Williams, Aeree Chung

Abstract:

NGC 613 is a nearby barred spiral galaxy with a nuclear ring. Exploiting high spatial resolution (≈20 pc) Atacama Large Millimeter/sub-millimeter Array 12CO(1-0) observations, we study the giant molecular clouds (GMCs) in the nuclear ring and its vicinity, identifying 158 spatially- and spectrally-resolved GMCs. The GMC sizes (Rc) are comparable to those of the clouds in the Milky Way (MW) disc, but their gas masses, observed linewidths (σobs, los) and gas mass surface densities are larger. The GMC size – linewidth relation ($\sigma _{\mathrm{obs,los}}\propto R_{\mathrm{c}}^{0.77}$) is steeper than that of the clouds of the MW disc and centre, and the GMCs are on average only marginally gravitationally bound (with a mean virial parameter 〈αobs, vir〉 ≈ 1.7). We discuss the possible origins of the steep size – linewidth relation and enhanced observed linewidths of the clouds and suggest that a combination of mechanisms such as stellar feedback, gas accretion and cloud-cloud collisions, as well as the gas inflows driven by the large-scale bar, may play a role.
More details from the publisher
Details from ORA
More details