IIAP Publications: Recent submissions

  • Towards Gender Equity in Indian Astronomy 
    Beri, Aru; Shastri, Prajval; Banyal, R. K; Chatterjee, Debarati; Chatterjee, Ritaban; Jassal, Harvinder; Kanekar, Nissim; Kharb, Preeti; Misra, Kuntal (2023-11)
    The Working Group for Gender Equity (WGGE) was formally constituted under the Astronomical Society of India (ASI) in 2015 to increase awareness about gender-related issues in the astrophysics community. The current ...
  • Disentangling the two sub-populations of early Herbig Be stars using VLT/X-shooter spectra 
    Shridharan, B; Mathew, B; Arun, R; Cysil, T. B; Subramaniam, A; Manoj, P; Maheswar, G; Sudheesh, T. P (EDP Sciences, 2023-11)
    Early Herbig Be (HBe) stars are massive, young stars accreting through the boundary layer mechanism. However, given the rapid (<2 Myr) evolution of early Herbig stars to the main-sequence phase, studying the evolution of ...
  • Bridging between Type IIb and Ib Supernovae: SN IIb 2022crv with a Very Thin Hydrogen Envelope 
    Gangopadhyay, Anjasha; Maeda, Keiichi; Singh, Avinash; Nayana, A. J; Nakaoka, Tatsuya; Kawabata, Koji S; Taguchi, Kenta; Singh, Mridweeka; Chandra, Poonam; Ryder, Stuart D; Dastidar, Raya; Yamanaka, Masayuki; Kawabata, Miho; Alsaberi, Rami Z. E; Dukiya, Naveen; Teja, Rishabh Singh; Ailawadhi, Bhavya; Dutta, Anirban; Sahu, D. K; Moriya, Takashi J; Misra, Kuntal; Tanaka, Masaomi; Chevalier, Roger; Tominaga, Nozomu; Uno, Kohki; Imazawa, Ryo; Hamada, Taisei; Hori, Tomoya; Isogai, Keisuke (American Astronomical Society, 2023-11-10)
    We present optical, near-infrared, and radio observations of supernova (SN) SN IIb 2022crv. We show that it retained a very thin H envelope and transitioned from an SN IIb to an SN Ib; prominent Hα seen in the pre-maximum ...
  • Asteroseismology Sheds Light on the Origin of Carbon-deficient Red Giants: Likely Merger Products and Linked to the Li-rich Giants 
    Maben, Sunayana; Campbel, Simon W; Bharat Kumar, Y; Reddy, B. E; Zhao, Gang (IOP Publishing, 2023-11-01)
    Carbon-deficient red giants (CDGs) are a peculiar class of stars that have eluded explanation for decades. We aim to better characterize CDGs by using asteroseismology (Kepler, TESS) combined with spectroscopy (APOGEE, LAMOST), ...
  • TRAO Survey of Nearby Filamentary Molecular Clouds, the Universal Nursery of Stars (TRAO-FUNS). III. Filaments and Dense Cores in the NGC 2068 and NGC 2071 Regions of Orion B 
    Yoo, Hyunju; Lee, Chang Won; Chung, Eun Jung; Kim, Shinyoung; Tafalla, Mario; Caselli, Paola; Myers, Philip C; Kim, Kyoung Hee; Liu, Tie; Kwon, Woojin; Archana Soam; Kim, Jongsoo (American Astronomical Society, 2023-11-10)
    We present the results of molecular line observations performed toward the NGC 2068 and NGC 2071 regions of the Orion B cloud as the TRAO-FUNS project to study the roles of the filamentary structure in the formation ...
  • Adaptive friend of friends algorithm for identifying gravitationally bound cosmological structures 
    Gupta, Prateek; Paul, Surajit (American Physical Society, 2023-11-15)
    The Universe at the present epoch is found to be a network of matter over dense and under dense regions. Usually, the over dense regions are dominated by the dark-matter (DM) filaments where massive gravitationally bound ...
  • An FUV and optical study of star formation in closely interacting galaxies: star-forming rings, tidal arms, and nuclear outflows 
    Yadav, Jyoti; Mousumi Das; Barway, Sudhanshu; Combes, Francoise (Oxford University Press on behalf of Royal Astronomical Society, 2023-11)
    We present a study of the morphology of star formation and the associated nuclear activity in a sample of eight closely interacting southern galaxies, which are in different stages of interaction, starting with nearly ...
  • H I 21cm observations and dynamical modelling of the thinnest galaxy: FGC 2366 
    Aditya, K; Banerjee, Arunima; Kamphuis, Peter; Mosenkov, Aleksandr; Makarov, Dmitry; Borisov, Sviatoslav (Oxford University Press on behalf of Royal Astronomical Society, 2023-11)
    Superthin galaxies are bulgeless low-surface brightness galaxies with unusually high major-to-minor axes ratio of the stellar disc, i.e. 10 < a/b < 20. We present Giant Metrewave Radio Telescope (GMRT) H I 21cm radio-synthesis ...
  • A large sample of newly identified carbon-deficient red giants from APOGEE 
    Maben, Sunayana; Bharat Kumar, Y; Reddy, B. E; Campbell, Simon W; Zhao, Gang (Oxford University Press on behalf of Royal Astronomical Society, 2023-11)
    Based on the Apache Point Observatory Galactic Evolution Experiment survey we conducted a search for carbon-deficient red giants (CDGs). We found 103 new CDGs, increasing the number in the literature by more than a factor ...
  • Unraveling the Thermodynamic Enigma between Fast and Slow Coronal Mass Ejections 
    Khuntia, Soumyaranjan; Mishra, Wageesh; Mishra, Sudheer K; Wang, Yuming; Zhang, Jie; Lyu, Shaoyu (IOP Publishing, 2023-11-20)
    Coronal mass ejections (CMEs) are the most energetic expulsions of magnetized plasma from the Sun that play a crucial role in space weather dynamics. This study investigates the diverse kinematics and thermodynamic evolution ...
  • Designing custom medium resolution observing modes to trace planet accretion with SCALES 
    Martinez, Raquel A; Sallum, Steph; Banyal, R. K; Batalha, Natalie; Batalha, Natasha; Blake, Geoff; Brandt, Tim; Briesemeister, Zack; Kleer, Katherine de; Pater, Imke de; Desai, Aditi; Eisner, Josh; Fong, Wen-fai; Greene, Tom; Honda, Mitsuhiko; Kain, Isabel; Kilpatrick, Charlie; Kupke, Renate; Lach, Mackenzie; Liu, Mike; Macintosh, Bruce; Mawet, Dimitri; Miles, Brittany; Morley, Caroline; Powell, Diana; Sheehan, Patrick; Skemer, Andrew J; Spilker, Justin; Stelter, Deno; Stone, Jordan; Surya, Arun; Sivarani, T; Wagner, Kevin; Zhou, Yifan (SPIE-The International Society for Optical Engineering, 2023-10)
    The Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES) is an under-construction thermal infrared high-contrast integral field spectrograph that will be located at the W. M. Keck Observatory. SCALES ...
  • The development of HISPEC for Keck and MODHIS for TMT: science cases and predicted sensitivities 
    Konopacky, Quinn M; Baker, Ashley D; Mawet, Dimitri; Fitzgerald, Michael P; Jovanovic, Nemanja; Beichman, Charles; Ruane, Garreth; Bertz, Rob; Terada, Hiroshi; Dekany, Richard; Lingvay, Larry; Kassis, Marc; Anderson, David; Tamura, Motohide; Benneke, Bjorn; Beatty, Thomas; Do, Tuan; Nishiyama, Shogo; Plavchan, Peter; Wang, Jason; Wang, Ji; Burgasser, Adam; Ruffio, Jean-Baptiste; Zhang, Huihao; Brown, Aaron; Fucik, Jason; Gibbs, Aidan; Gibson, Rose; Halverson, Sam; Johnson, Christopher; Karkar, Sonia; Kotani, Takayuki; Kress, Evan; Leifer, Stephanie; Magnone, Kenneth; Maire, Jerome; Pahuja, Rishi; Porter, Michael; Roberts, Mitsuko; Sappey, Ben; Thorne, Jim; Wang, Eric; Artigau, Etienne; Blake, Geoffrey A; Canalizo, Gabriela; Chen, Guo; Doppmann, Greg; Doyon, Rene; Dressing, Courtney; Fang, Min; Greene, Thomas; Herczeg, Greg; Hillenbrand, Lynne; Howard, Andrew; Kane, Stephen; Kataria, Tiffany; Kempton, Eliza; Knutson, Heather; Lafrenière, David; Liu, Chao; Metchev, Stanimir; Millar-Blanchaer, Max; Narita, Norio; Pandey, G; Rajaguru, S. P; Robertson, Paul; Salyk, Colette; Sato, Bun’ei; Schlawin, Evertt; Sengupta, S; Sivarani, T; Skidmore, Warren; Vasisht, Gautam; Yasui, Chikako; Zhang, Hui (SPIE-The International Society for Optical Engineering, 2023-10)
    HISPEC is a new, high-resolution near-infrared spectrograph being designed for the W.M. Keck II telescope. By offering single-shot, R 100,000 spectroscopy between 0.98 – 2.5 µm, HISPEC will enable spectroscopy of transiting ...
  • The slicer combined with array of lenslets for exoplanet spectroscopy (SCALES): driving science cases and expected outcomes 
    Sallum, Steph; Skemer, Andrew; Stelter, Deno; Banyal, R. K; Batalha, Natalie; Batalha, Natasha; Blake, Geoff; Brandt, Tim; Briesemeister, Zack; Kleer, Katherine de; Pater, Imke de; Desai, Aditi; Eisner, Josh; Fong, Wen-fai; Greene, Tom; Honda, Mitsuhiko; Jensen-Clem, Rebecca; Kain, Isabel; Kilpatrick, Charlie; Kupke, Renate; Lach, Mackenzie; Liu, Michael C; Macintosh, Bruce; Martinez, Raquel A; Mawet, Dimitri; Miles, Brittany; Morley, Caroline; Powell, Diana; Sethuram, Ramya; Sheehan, Patrick; Spilker, Justin; Stone, Jordan; Surya, Arun; Sivarani, T; Unni, Athira; Wagner, Kevin; Zhou, Yifan (SPIE-The International Society for Optical Engineering, 2023-10)
    The Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy (SCALES) is a 2 − 5 µm, high-contrast integral field spectrograph (IFS) currently being built for Keck Observatory. With both low (R ≲ 250) and medium ...
  • Design concepts of EUV polarimeter 
    Khan, Raveena; Nagaraju, K; Phanindra, D. V. S (SPIE-The International Society for Optical Engineering, 2023-10)
    The solar corona is a complex and dynamic region primarily controlled by the magnetic fields. Hence the routine measurement of these fields is crucial. Magnetic field information remains embedded in the polarization profiles ...
  • Atmospheric dispersion corrector for a multi-object spectroscopic mode of HROS-TMT 
    Manjunath, B; Hasan, Amirul; Divakar, Devika; Surya, Arun; Sriram, S; Sivarani, T; Prakash, A; Parvathy, M; Yadav, Sudharsan (SPIE-The International Society for Optical Engineering, 2023-10)
    Highly multiplexed spectroscopic surveys have changed the astronomy landscape in recent years. However, these surveys are limited to low and medium spectral resolution. High spectral resolution spectroscopy is often photon ...
  • A Deep Study of the Open Cluster NGC 5288 Using Photometric and Astrometric Data from GAIA DR3 and 2MASS 
    Sethi, Ritika; Bisht, D; Rangwal, Geeta; Raj, A (Instituto de Astronomıa, Universidad Nacional Autonoma de Mexico, 2023-10)
    This paper investigates a poorly studied open cluster, NGC 5288, using 2MASS JHKS and the recently released Gaia DR3 astrometric and photometric data. The mean proper motions in right ascension and declination are estimated ...
  • Simulating medium-spectral-resolution exoplanet characterization with SCALES angular/reference differential imaging 
    Desai, Aditi; Sallum, Stephanie E; Banyal, R. K; Batalha, Natalie; Batalha, Natasha; Blake, Geoff; Brandt, Tim; Briesemeister, Zack; Kleer, Katherine de; Pater, Imke de; Eisner, Josh; Fong, Wen-fai; Greene, Tom; Honda, Mitsuhiko; Kain, Isabel; Kilpatrick, Charlie; Lach, Mackenzie; Liu, Mike; Macintosh, Bruce; Martinez, Raquel A; Mawet, Dimitri; Miles, Brittany; Morley, Caroline; Powell, Diana; Sheehan, Patrick; Skemer, Andrew J; Spilker, Justin; Stelter, R. Deno; Stone, Jordan; Surya, Arun; Sivarani, T; Wagner, Kevin; Zhou, Yifan (SPIE-The International Society for Optical Engineering, 2023-10)
    SCALES (Slicer Combined with Array of Lenslets for Exoplanet Spectroscopy) is a 2 - 5 micron high-contrast lenslet-based integral field spectrograph (IFS) designed to characterize exoplanets and their atmospheres. The SCALES ...
  • Mass-varying dark matter and its cosmological signature 
    Das, Anirban; Das, Subinoy; Sethi, Shiv K. (American Physical Society, 2023-10-15)
    Nontrivial dark sector physics continues to be an interesting avenue in our quest to the nature of dark matter. In this paper, we study the cosmological signatures of mass-varying dark matter where its mass changes from ...
  • AutoTAB: Automatic Tracking Algorithm for Bipolar Magnetic Regions 
    Sreedevi, Anu; Jha, Bibhuti K; Karak, Bidya Binay; Banerjee, D (American Astronomical Society, 2023-10)
    Bipolar magnetic regions (BMRs) provide crucial information about solar magnetism. They exhibit varying morphology and magnetic properties throughout their lifetime, and studying these properties can provide valuable ...
  • Dynamics of Photospheric Magnetic Flux Distribution and Variations in Solar RVs: A Study Using HARPS-N Solar and SDO Observations 
    Sen, Anisha; Rajaguru, S. P (American Astronomical Society, 2023-10-20)
    The distribution and evolution of photospheric magnetic fields in sunspots, plages, and network, and variations in their relative flux content, play key roles in radial velocity (RV) fluctuations observed in Sun-as-a-star ...

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