IIAP Publications: Recent submissions

  • The metal-poor end of the Spite plateau I. Stellar parameters, metallicities, and lithium abundances 
    Sbordone, L; Bonifacio, P; Caffau, E; Ludwig, H. -G; Behara, N. T; González Hernández, J. I; Steffen, M; Cayrel, R; Freytag, B; Van’t Veer, C; Molaro, P; Plez, B; Sivarani, T; Spite, M; Spite, F; Beers, T. C; Christlieb, N; François, P; Hill, V (EDP Sciences, 2010-11)
    Context. The primordial nature of the Spite plateau is at odds with the WMAP satellite measurements, implying a primordial Li production at least three times higher than observed. It has also been suggested that A(Li) might ...
  • The historical significance of the total solar eclipse of Oct 17, 1762 that passed over Panjab 
    Kapoor, R. C (Indian National Science Academy, 2010-12)
    In this communication we present the circumstances of the total solar eclipse of Oct 17, 1762 that passed over India, specific to Amritsar to recreate the ambience that may serve as a definitive input to certain perceptions ...
  • Dangerous Face of the Sun 
    Sundararaman, K (NISCAIR-CSIR, India, 2010-11)
    Are we going to be roasted alive by killer solar storms that may arrive during the next solar maximum in 2012? Why and how do these solar flares occur and how do they affect the earth? Read on to find out
  • On some photographic AIDS for the measurement of Astronomical spectra 
    Bappu, M. K. V (European Southern Observatory, 1978)
  • Orbital period modulation and spot activity in the RS CVn binary V711 Tauri 
    Muneer, S; Jayakumar, K; Rosario, M. J; Raveendran, A. V; Mekkaden, M. V (EDP Sciences, 2010-10)
    We attempt to establish the real nature of the orbital period variation and its relation to the spot activity of V711 Tau, and determine why the (B–V) colour of the star appears to be nearly independent of its V magnitude. ...
  • Cosmogenic radioisotopes in the Almahata Sitta ureilite 
    Carla, T; Narendra, B; Paolo, C; Alberto, R; Gianna, V; Neeharika, S; Peter, J; Muawia, H. S; Ballabh, G. M (John Wiley & Sons, 2010-11)
    Asteroid 2008 TC3 was predicted to fall in Sudan on October 7, 2008, and 2 months later, 15 meteorite fragments were recovered from the Nubian Desert. Most of these fragments were classified as polymict ureilites. In the ...
  • Modeling the Subsurface Structure of Sunspots 
    Moradi, H; Baldner, C; Birch, A. C; Braun, D. C; Cameron, R. H; Duvall, T. L; Gizon, L; Haber, D; Hanasoge, S. M; Hindman, B. W; Jackiewicz, J; Khomenko, E; Komm, R; Rajaguru, S. P; Rempel, M; Roth, M; Schlichenmaier, R; Schunker, H; Spruit, H. C; Strassmeier, K. G; Thompson, M. J; Zharkov, S (Springer, 2010-11)
    While sunspots are easily observed at the solar surface, determining their subsurface structure is not trivial. There are two main hypotheses for the subsurface structure of sunspots: the monolithic model and the cluster ...
  • First Results from the NOAO Survey of the Outer Limits of the Magellanic Clouds 
    Saha, A; Olszewski, E. W; Brondel, B; Olsen, K; Knezek, P; Harris, J; Smith, C; Subramaniam, A; Claver, J; Rest, A; Seitzer, P; Cook, K. H; Minniti, D; Suntzeff, N. B (IOP Publishing, 2010-12)
    We describe the first results from the Outer Limits Survey, an NOAO survey designed to detect, map, and characterize the extended structure of the Large and Small Magellanic Clouds (LMC and SMC). The survey consists of ...
  • Mapping the Diffuse Ultraviolet Sky with the Galaxy Evolution Explorer 
    Murthy, J; Henry, R. C; Sujatha, N. V (IOP Publishing, 2010-12)
    We present a map of the diffuse ultraviolet cosmic background in two wavelength bands (FUV: 1530 Å and NUV: 2310 Å) over almost 75% of the sky using archival data from the Galaxy Evolution Explorer (GALEX) mission. Most ...
  • Temperature variability in X-ray bright points observed with Hinode/XRT 
    Kariyappa, R; DeLuca, E. E; Saar, S. H; Golub, L; Dam´e, L; Pevtsov, A. A; Varghese, B. A (EDP Science, 2011-02)
    Aims. Our aim is to investigate the variability in the temperature as a function of time among a sample of coronal X-ray bright points (XBPs). Methods. We analysed a 7-hour (17:00 UT - 24:00 UT) long time sequence of ...
  • Lithium abundances in the α Per cluster 
    Mallik, S. G. V; Balachandran, S. C; Lambert, D. L (Cambridge University Press, 2010-04)
    As a sequel to the Li observations by Balachandran, Lambert & Stauffer (1988, 1996) in 35 stars of the 50 Myr old cluster α Persei, we have obtained and analyzed high resolution spectra of another 51 stars. Following a ...
  • Survey for Li-rich K giants 
    Bharat Kumar, Y; Reddy, B. E (Cambridge University Press, 2010-04)
    We present results from an ongoing survey of searching Li-rich K giants among low mass giants along the Red Giant Branch (RGB). A sample of 2500 stars with accurate astrometry have been selected from Hipparcos catalogue ...
  • Long-period intensity oscillations of the quiet solar atmosphere from TRACE 1600 Å continuum observations 
    Kariyappa, R; Damé, L (Societa Astronomica Italiana, 2010)
    We have analysed a 6-hour long time sequence of ultraviolet (uv) images obtained on May 24, 2003 in 1600 Å continuum under high spatial and temporal resolutions from the Transition Region and Coronal Explorer (TRACE). ...
  • Polarized line formation in multi-dimensional media-II: A fast method to solve problems with partial frequency redistribution 
    Anusha, L. S; Nagendra, K. N; Paletou, F (IOP Publishing, 2011-01-10)
    In the previous paper of this series (Anusha & Nagendra 2010), we presented a formula- tion of the polarized radiative transfer equation for resonance scattering with partial frequency redistribution (PRD) in multi-dimensional ...
  • Polarized line formation in Multi-dimensional media-I: Decomposition of Stokes parameters in arbitrary geometries 
    Anusha, L. S; Nagendra, K. N (IOP Publishing, 2011-01-01)
    The solution of the polarized line radiative transfer (RT) equation in muti-dimensional geome- tries has been rarely addressed and only under the approximation that the changes of frequencies at each scattering are ...
  • GALEX Observations of Diffuse Ultraviolet Emission from Draco 
    Sujatha, N. V; Murthy, J; Suresh, R; Henr, R. C; Bianchi, L (IOP Publishing, 2010-11-10)
    We have studied small-scale (2') spatial variation of the diffuse ultraviolet (UV) radiation using a set of 11 Galaxy Evolution Explorer deep observations in the constellation of Draco. We find a good correlation between ...
  • HE 1015–2050: discovery of a hydrogen-deficient carbon star at high galactic latitude 
    Goswami, A; Drisya, K; Shantikumar, N. S (IOP Publishing, 2010-11-10)
    Medium-resolution spectral analysis of candidate Faint High Latitude Carbon (FHLC) stars from the Hamburg/ESO survey has given us the potential to discover objects of rare types. Two primary spectral characteristics of R ...
  • Relativistic calculations of ground and excited states of LiYb molecule for ultracold photoassociation spectroscopy studies 
    Gopakumar, G; Abe, Minori; Das, B. P; Hada, Masahiko; Hirao, Kimihiko (American Institute of Physics, 2010-09-29)
    We report a series of quantum-chemical calculations for the ground and some of the low-lying excited states of an isolated LiYb molecule by the spin-orbit multistate complete active space second-order perturbation theory ...
  • Reports on the Progress of Astronomy: Solar Activity-Prominences 
    Bappu, M. K. V (Royal Astronomical Society, 1965-12)
  • Modelling the diffuse ultraviolet radiation observed by Dynamics Explorer 1 
    Shalima, P; Murthy, J; Fix, J. D (Wiley Blackwell, 2010-10)
    The Dynamics Explorer spacecraft, DE-1, has undertaken two sky surveys in the far-ultraviolet regime, covering a wide variety of Galactic latitudes. We have used a single scattering dust model to probe into the optical ...

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