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  • Lithium and Rotation in Pop I stars 
    Mallik, S. G. V (Cambridge University Press, 2004)
    Lithium abundances have been determined for 130 stars sampled on the basis that they have just about completed depletion of Li on the main sequence and have not yet begun their ascent on the red giant branch. The ...
  • Lithium enrichment in the Galaxy: A study using the GALAH and Gaia surveys 
    Deepak; Reddy, B. E (Cambridge University Press, 2019-06)
    Here, we explore the enrichment of Lithium in the Galaxy using a large sample of stars common among large spectroscopic surveys such as the GALAH and astrometric survey by the Gaia satellite. For this study we used about ...
  • Lithium in red giants: the roles of the He-core flash and the luminosity bump 
    Deepak; Lambert, D. L (Oxford University Press on behalf of the Royal Astronomical Society, 2021-10)
    Lithium abundances for red giants in the GALAH DR3 survey are studied. The rare examples of Li-enriched stars with abundances A(Li) ≥1.5 are confirmed to be He-core burning stars belonging to or evolved from the red clump ...
  • Lithium in Stars on the Main Sequence and Beyond 
    Mallik, S. G. V (Astronomical Society of India, 2003)
    7Li provides a rare constraint on the baryonic density of the Universe and because of its fragile nature, it is also an excellent diagnostic of the physical processes occurring inside stars. The study of Li in Pop.I stars ...
  • Lithium in the Galaxy: current status and contribution from the low-mass giants? 
    Deepak; Reddy, B. E (Societa Astronomica Italiana, 2020)
    We discuss the evolution of Li in the Galaxy based on a large sample of dwarfs and giants collected from the cross-match of the Gaia and GALAH surveys. Data spans a wide range in metallicity and cover various Galactic ...
  • The lithium in weak G-band stars 
    Parthasarathy, M; Kameswara Rao, N (D. Reidel Publishing Co., 1980-11)
    The lithum abundance in weak G-band stars is found to be linearly correlated with CH deficiency. Weak G-band stars with a high Li abundance are found to show relatively least carbon deficiency, while the stars with a ...
  • Local helioseismic and spectroscopic analyses of interactions between acoustic waves and a sunspot 
    Rajaguru, S. P; Wachter, R; Sankarasubramanian, K; Couvidat, S (IOP Publishing, 2010-10-01)
    Using a high-cadence imaging spectropolarimetric observation of a sunspot and its surroundings in magnetically sensitive (Fe I 6173 Å) and insensitive (Fe I 7090 Å) upper photospheric absorption lines, we map the instantaneous ...
  • Local patch analysis for testing statistical isotropy of the Planck convergence map 
    Goyal, Priya; Pravabati, C (IOP Publishing, 2021-08)
    The small but measurable effect of weak gravitational lensing on the cosmic microwave background radiation provide information about the large-scale distribution of matter in the universe. We use the all sky distribution ...
  • Local stability criterion for a two component galactic disk 
    Jog, C. J (Astronomical Society of India, 2000)
    The criterion for stability against local, axisymmetric perturbations in gravitationally coupled stars and gas in a galactic disk is obtained. The new feature is the inclusion of both stars and gas in the study, and a ...
  • The local stellar population of nova regions in the Large Magellanic Cloud 
    Subramaniam, A; Anupama, G. C (EDP Sciences, 2002-08)
    This study aims at identifying and understanding the parent population of novae in the Large Magellanic Cloud (LMC) by studying the local, projected, stellar population. The star formation history of the local environment ...
  • The Local Stellar Population of Slow Nova Regions in the SMC 
    Subramaniam, A; Anupama, G. C (Astronomical Society of India, 2003)
  • The local supercluster of galaxies 
    de Vaucouleurs, G (Astronomical Society of India, 1981-03)
    The history of the discovery of the Local Supercluster or "Supergalaxy" is traced. Recent studies of its influence on the distribution and velocities of nearby galaxies are reviewed.
  • Localization of Io and non-Io sources of Jovian decameter emission 
    Boischot, A; Sastri, J. H; Zarka, P (The European Southern Observatory, 1987-03)
    The observation of interplanetary scintillations (IPS) of the decameter radio emission from Jupiter provides information about the structure and position of the sources of emission. The paper presents the analysis of all ...
  • Location of equilibrium points in the perturbed photogravitational circular restricted problem of three bodies 
    Sathi Devi, G; Singh, R (Astronomical Society of India, 1994)
  • The location of solar metric type ii radio bursts with respect to the associated coronal mass ejections 
    Ramesh, R; Anna Lakshmi, M; Kathiravan, C; Gopalswamy, N; Umapathy, S (IOP Publishing, 2012-06-20)
    Forty-one solar type II radio bursts located close to the solar limb (projected radial distance rlesssim 0.8Rbigdot) were observed at 109 MHz by the radioheliograph at the Gauribidanur observatory near Bangalore during the ...
  • The long period spectroscopic binary HR 1176 
    Raghavender Rao, C; Abhyankar, K. D (Astronomical Society of Indian, 1989-12)
    Radial velocity measurements of the long-period spectroscopic binary HR 1176 are obtained from spectrograms made with a 1.22-m telescope at Japal-Rangapur Observatory in India. The spectral line and radial velocity ...
  • Long term periodicities of Geomagnetic reversals and stability of ancient Galactic motions of the solar system 
    Negi, J. G (Indian Institute of Astrophysics, Bangalore, 1988)
    Paleomagnetic records can be a rich source of empirical data in characteristic time scales of tremendous interest to solar astronomers and verifiable theories on the earth’s evolution in its galactic environment. The record ...
  • Long Term Variations in Chromospheric Features from Ca-K Images at Kodaikanal 
    Priyal, M; Singh, J; Ravindra, B; Priya, T. G; Amareswari, K (Springer, 2014-01)
    There is a collection of about 100 years of Ca-K line spectroheliograms at the Kodaikanal Observatory (KKL) obtained on daily basis with a single instrument that can be used to study long term variations of various ...
  • Long term γ-ray variability of blazars 
    Rajput, Bhoomika; Stalin, C. S; Rakshit, S (EDP Sciences, 2020-02)
    We used the data from the Fermi Gamma-ray Space Telescope to characterise the γ-ray flux variability of blazars on month-like time scales. Our sample consists of 1120 blazars of which 481 are flat spectrum radio quasars ...
  • The long-active afterglow of GRB 210204A: detection of the most delayed flares in a gamma-ray burst 
    Kumar, Harsh; Gupta, Rahul; Saraogi, Divita; Ahumada, Tomás; Andreoni, Igor; Anupama, G. C; Aryan, Amar; Barway, Sudhanshu; Bhalerao, Varun; Chandra, Poonam; Coughlin, Michael W; Dimple; Dutta, Anirban; Ghosh, Ankur; Ho, Anna Y. Q; Kool, E. C; Kumar, Amit; Medford, Michael S; Misra, Kuntal; Pandey, Shashi B; Perley, Daniel A; Riddle, Reed; Ror, Amit Kumar; Setiadi, Jason M; Yao, Yuhan (Oxford University Press on behalf of Royal Astronomical Society, 2022-06)
    We present results from extensive broadband follow-up of GRB 210204A over the period of 30 d. We detect optical flares in the afterglow at 7.6 × 105 s and 1.1 × 106 s after the burst: the most delayed flaring ever detected ...

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