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  • Hou, Jiamin; Sanchez, Ariel G; Ross, A. J; Smith, A; Neveux, R; Bautista, J; Burtin, E; Zaho, Chang; Scoccimarro, Roman; Dawson, K. S; de Mattia, A; de la Macorra, A; des Bourboux, Helion du Mas; Eisenstein, D. J; Gil-Marin, H; Lyke, Brad W; Mohammad, F. G; Mueller, E.-M; Percival, W. J; Rossi, G; Magana, M. V; Zarrouk, Pauline; Zhao, Gong-Bo; Brinkmann, J; Brownstein, J. R; Chuang, C.-H; Myers, A. D; Newman, J. A; Schneider, D. P; Vivek, M (Oxford University Press on behalf of the Royal Astronomical Society, 2021-01)
    We measure the anisotropic clustering of the quasar sample from Data Release 16 (DR16) of the Sloan Digital Sky Survey IV extended Baryon Oscillation Spectroscopic Survey (eBOSS). A sample of 343 708 spectroscopically ...
  • Jha, Bibhuti K; Priyadarshi, Aditya; Mandal, Sudip; Chatterjee, Subhamoy; Banerjee, D (Springer, 2021-01)
    The rotational profile of the Sun is considered to be one of the key inputs in a solar dynamo model. Hence, precise and long-term measurements of this quantity is important for our understanding of solar magnetism and its ...
  • Singh, G; Sahu, S; Subramaniam, A; Yadav, R. K. S (IOP Publishing, 2020-12-10)
    We present a study of far-UV (FUV) bright horizontal branch (HB) stars to understand the peculiarities seen in the HB sequence of the globular cluster NGC 1851, using ground- and space-based multiwavelength data. Optical ...
  • Panwar, N; Sharma, S; Ojha, D. K; Baug, T; Dewangan, L. K; Bhatt, B. C; Pandey, R (IOP Publishing, 2020-12-10)
    We report the observational findings of the Sh2-112 H ii region by using the multiwavelength data analysis ranging from optical to radio wavelengths. This region is powered by the massive O8V-type star BD +45 3216. The ...
  • Anupama, G. C; Pavana, M (Springer, 2020-12)
    Type Ia supernovae are the result of explosive thermonuclear burning in CO white dwarfs. The progenitors of the Ia supernovae are white dwarfs in an interacting binary system. The donor companion is either a degenerate ...
  • Narra, V. S; Budihal, R. P; Somasundaram, P. K; Sriraman, K; Venkatasubramanian, N; Padavu, U. K; Mani, V. T; Basavaraja, S; Naik, R (Springer, 2020-12)
    Molecular contamination on optical surfaces is a serious issue for space payloads. For ultraviolet (UV) payloads, molecular contamination results in loss of throughput. Whereas, for visible (VIS) payloads loss of throughput ...
  • Clea, Sunny; Sivaram, C; Gudennavar, S. B (Elsevier B. V., 2020-12)
    Dark matter (DM) which constitutes five-sixths of all matter is hypothesized to be a weakly interacting non-baryonic particle, created in the early stages of cosmic evolution. It can affect various cosmic structures in the ...
  • Parthasarathy, M; Matsuno, T; Aoki, W (Oxford University Press on behalf of the Astronomical Society of Japan, 2020-12)
    From Gaia DR2 data of eight high-velocity hot post-AGB candidates, LS 3593, LSE 148, LS 5107, HD 172324, HD 214539, LS IV −12 111, LS III +52 24, and LS 3099, we found that six of them have accurate parallaxes which made ...
  • Jensen-Clem, R; Millar-Blanchaer, M. A; van Holstein, R. G; Mawet, Dimitri; Graham, J; Sengupta, S; Marley, M. S; Snik, Frans; Vigan, A; Hinkley, S; de Boer, Jos; Girard, J. H; De Rosa, R. J; Bowler, B. P; Wiktorowicz, S. J; Perrin, M. D; Crepp, J. R; Macintosh, B (IOP Publishing, 2020-12)
    Aerosols in the atmospheres of cloudy gas giant exoplanets and brown dwarfs scatter and polarize these objects' thermal emission. If such an object has an oblate shape or nonuniform cloud distribution, the net degree of ...
  • George, K; Joseph, P; Mondal, C; Subramanian, S; Subramaniam, A; Paul, K. T (EDP Sciences, 2020-12)
    The underlying nature of the process of star formation quenching in the central regions of barred disc galaxies that is due to the action of stellar bar is not fully understood. We present a multi-wavelength study of four ...
  • Reddy, A. B. S; Giridhar, S; Lambert, D. L (Indian Academy of Sciences, 2020-12)
    The article presents the consolidated results drawn from the chemical composition studies of Reddy et al. (2012, 2013, 2015, 2016) and Reddy & Lambert (2019), who through the high-dispersion echelle spectra (R=60000) of ...
  • Purandardas, M; Goswami, A (Indian Academy of Sciences, 2020-12)
    All the elements heavier than Fe are produced either by the slow (-s) or rapid (-r) neutron-capture process. The neutron density prevailing in the stellar sites is one of the major factors that determines the type of ...
  • Sagar, R; Kumar, B; Sharma, S (Indian Academy of Sciences, 2020-12)
    The 3.6-meter Indo–Belgian Devasthal optical telescope (DOT) has been used for optical and near-infrared (NIR) observations of celestial objects. The telescope has detected stars of B=24.5±0.2,R=24.6±0.12 and g=25.2±0.2 ...
  • Rani, S; Pandey, G; Subramaniam, A; Sahu, S; Kameswara Rao, N (Indian Academy of Sciences, 2020-12)
    We present the results obtained from the UV photometry of the globular cluster NGC 1261 using far-UV (FUV) and near-UV (NUV) images acquired with the Ultraviolet Imaging Telescope (UVIT) on-board the AstroSat satellite. ...
  • Shejeelammal, J; Goswami, A (Indian Academy of Sciences, 2020-12)
    Understanding nucleosynthesis in and evolution of asymptotic giant branch (AGB) stars is of primary importance as these stars are the main producers of some of the key elements in the Universe. They are the predominant ...
  • Hema, B. P; Pandey, G (Indian Academy of Sciences, 2020-12)
    In this work, the helium-enhancement (He-enhancement) in the lithium-rich (Li-rich) K-giant HD 77361 is investigated using the strengths of the MgH band and the Mg I lines. The detailed abundance analysis and also the ...
  • Giridhar, S (Indian Academy of Sciences, 2020-12)
    The availability of multi-wavelength observations and parallaxes from the space missions and very comprehensive models of AGB evolution that include the accretion of matter from the circumbinary disc have strongly impacted ...
  • Bhowmick, A; Pandey, G; Lambert, D. L (Springer, 2020-12)
    The origin and evolution of hydrogen-deficient stars are not yet adequately understood. Their chemical peculiarities, along with hydrogen-deficiency, makes them stand out from the rest and sheds light on their possible ...
  • Prerna Rana; Mangalam, A (IOP Publishing, 2020-11-10)
    We expand the relativistic precession model to include nonequatorial and eccentric trajectories and apply it to quasi-periodic oscillations (QPOs) in black hole X-ray binaries (BHXRBs) and associate their frequencies with ...
  • Paliya, V. S; Dominguez, A; Cabello, C; Cardiel, N; Gallego, J; Siana, B; Ajello, M; Hartmann, D; de Paz, A. G; Stalin, C. S (IOP Publishing, 2020-11-01)
    One of the major challenges in studying the cosmic evolution of relativistic jets is the identification of the highredshift (z > 3) BL Lacertae objects (BL Lacs), a class of jetted active galactic nuclei characterized by ...

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