Browsing by Title

Sort by: Order: Results:

  • A candidate dual AGN in a double-peaked emission-line galaxy with precessing radio jets 
    Rubinur, K; Mousumi Das; Kharb, P; Honey, M (Oxford University Press on behalf of the Royal Astronomical Society, 2017-03)
    We present high-resolution radio continuum observations with the Karl G. Jansky very large array at 6, 8.5, 11.5 and 15 GHz of the double-peaked emission-line galaxy 2MASXJ12032061+1319316. The radio emission has a prominent ...
  • Capacitive edge sensor and sensor electronics for segmented mirror telescopes 
    Sreekanth Reddy, V (Indian Institute of Astrophysics, 2014-08)
    Edge sensors are high precision displacement sensors used in segmented mirror telescope to measure relative displacement between two mirror segments. An edge sensor based on parallel plate capacitor is being used in Keck ...
  • Capture of field stars by molecular clouds 
    Bhatt, H. C (European Southern Observatory, 1989-04)
    Field stars can be captured by massive interstellar clouds. Stars encounter interstellar clouds with relative velocities that have a distribution. Close encounters in which stars enter a cloud with relative velocities less ...
  • Carbon Abundance of Stars in the LAMOST-Kepler Field 
    Athira Unni; Narang, Mayank; Sivarani, T; Puravankara, Manoj; Banyal, R. K; Surya, Arun; Rajaguru, S. P; Swastik, C (American Astronomical Society, 2022-11-01)
    The correlation between host star iron abundance and the exoplanet occurrence rate is well established and arrived at in several studies. Similar correlations may be present for the most abundant elements, such as carbon ...
  • Carbon Abundances From SDSS Globular Clusters: Exploring the Origin in the Large Spread in [C/Fe] 
    Fiorenza, S. L; Sivarani, T; Susmitha, A; Lee, Y. S; Beers, T. C (Societa Astronomica Italiana, 2013)
    Globular clusters were once thought to be chemically homogeneous systems with a single stellar population. However, recent results suggest the presence of more than one stellar population among most all globular clusters. ...
  • Carbon monoxide and facula models 
    Tripathi, B. M; Pande, M. C; Sinha, K (Astronomical Society of India, 1982-06)
    Equivalent widths for a new lines of the first overtone band of carbon monoxide have been calculated in the solar infrared spectrum for five facular and two photospheric models. The calculations show a decrease in equilavent ...
  • The Carbon Star DY Persei May Be a Cool R Coronae Borealis Variable 
    Garcia-Hernandez, D. A; Kameswara Rao, N; Lambert, David L; Eriksson, K; Reddy, A. B. S; Masseron, Thomas (American Astronomical Society, 2023-05-01)
    Optical and near-IR photometry suggests that the carbon star DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric surveys of the Galaxy and Magellanic Clouds uncovered new DY Per ...
  • Carbon-Enhanced Metal-Poor Stars in SDSS/Segue. I. Carbon Abundance Estimation and Frequency of CEMP Star 
    Lee, Y. S; Beers, T. C; Masseron, T; Plez, B; Rockosi, C. M; Sobeck, J; Yanny, B; Lucatello, S; Sivarani, T; Placco, V. M; Carollo, D (IOP Publishing, 2013-11)
    We describe a method for the determination of stellar [C/Fe] abundance ratios using low-resolution (R = 2000) stellar spectra from the Sloan Digital Sky Survey (SDSS) and its Galactic sub-survey, the Sloan Extension for ...
  • Carbon-enhanced Metal-poor Stars in the Inner and Outer Halo Components of the Milky Way 
    Carollo, D; Beers, T. C; Bovy, Jo; Sivarani, T; Norris, J. E; Freeman, K. C; Aoki, W; Lee, Young Sun; Kennedy, C. R (IOP Publishing, 2012-01-10)
    Carbon-enhanced metal-poor (CEMP) stars in the halo components of the Milky Way are explored, based on accurate determinations of the carbon-to-iron ([C/Fe]) abundance ratios and kinematic quantities for over 30,000 ...
  • The Carter constant and Petrov classification of the Vaidya-Einstein-Kerr spacetime 
    Ramachandra, B. S (Springer, 2009-12)
    The existence of the Carter constant in the Vaidya–Einstein–Kerr (VEK) spacetime and its relation to the Petrov type is investigated. This spacetime is an example of a black hole in an asymptotically non-flat background. ...
  • The Case for the Dual Halo of the Milky Way 
    Beers, T. C; Carollo, D; Ivezic, Z; An, D; Chiba, M; Norris, J. E; Freeman, K. C; Lee, Young Sun; Munn, J. F; Re Fiorentin, P; Sivarani, T; Wilhelm, R; Yanny, B; York, D. G (IOP Publishing, 2012-02-10)
    Carollo et al. have recently resolved the stellar population of the Milky Way halo into at least two distinct components, an inner halo and an outer halo. This result has been criticized by Schönrich et al., who claim that ...
  • Cataclysmic variables: interclass connections 
    Anupama, G. C (Astronomical Society of India, 1996)
    The observational properties of the subclasses of the Cataclysmic Variables; classical and recurrent novae, dwarf novae, intermediate polars and the polars are described here. An interclass connection based on the properties ...
  • A Catalog of Narrow Line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Data Release 12 
    Rakshit, S; Stalin, C. S; Chand, H; Zhang, Xue-Guang (IOP Publishing, 2017-04)
    We present a new catalog of narrow-line Seyfert 1 (NLSy1) galaxies from the Sloan Digital Sky Survey Data Release 12 (SDSS DR12). This was obtained by a systematic analysis through modeling of the continuum and emission ...
  • A catalogue of 108 extended planetary nebulae observed by GALEX 
    Pradhan, Ananta C; Panda, Swayamtrupta; Parthasarathy, M; Murthy, J; Ojha, Devendra K (Springer, 2019-10)
    We present the ultraviolet (UV) imaging observation of planetary nebulae (PNe) using archival data of Galaxy Evolution Explorer (GALEX). We found 358 PNe detected by GALEX in near-UV (NUV). We have compiled a catalogue of ...
  • Catalogue of 317 stars selected from the B.A. Catalogue (being such as were supposed to have large proper motions), deduced from Observations made at the Honourable E. L Company's Observatory at Madras in the Years 1853-7 
    Jacob, W. S (Royal Astronomical Society, 1858-12)
  • Catalogue of Stars for 1875 0 from Observations made at the Government Observatory, Madras 1862-1887 
    Pogson, N. R; Smith, C. M (Government Observatory, Madras, 1899)
  • A catalogue of the observations of the mutual phenomena of the Galilean satellites made in 1991 during the PHEMU91 campaign 
    Arlot, J. E; Ruatti, C; Thuillot, W; Arsenijevic, J; Baptista, R; Barroso, J; Bauer, C; Berthier, J; Blanco, C; Bouchet, P; Bourgeois, J; Bulder, H. J. J; Burchi, R; Cano, J. A; Casas, R; Chauvet, F; Chis, D; Colas, F; Colin, J; D'Ambrosio, V; de Angelis, G; de Benedetto, G; Denzau, H; Desbats, J. M; Descamps, P; Dipaolantonio, A; Dumitrescu, A; Farcas, L; Federspiel, M; Flatres, T; Froeschle, M; Gherega, O; Gomez-Forrellad, J. M; Guarro, J; Hainaut, O; Horvat, A; Helmer, G; Hube, D; Ito, Y; Kidger, M; Lecacheux, J; Le Campion, J. F; Le Floch, J. C; Mallama, A; Martin, B. E; Mellilo, J. F; Meyer, C; Molau, S; Montignac, G; Morando, B; Nicolet, B; Nitschelm, C; Oprescu, G; Piersimoni, A; Przewozny, D; Protitch-Benishek, V; Rapaport, M; Riou, A; Sacre, J. J; Sevre, F; Shkodrov, V; Souchay, J; Takami, H; Taylor, R; Tholen, D. J; Turcu, V; Vasundhara, R; Vidal, J; Vu, D. T; White, G; Wilds, R. P (EDP Sciences, 1997-11)
    In this paper, all the light-curves obtained during the PHEMU91 campaign of observations of the mutual phenomena of the Galilean satellites are presented. These observations give accurate astrometric positions of major ...
  • CatNorth: An Improved Gaia DR3 Quasar Candidate Catalog with Pan-STARRS1 and CatWISE 
    Fu, Yuming; Wu, Xue-Bing; Li, Yifan; Pang, Yuxuan; Joshi, Ravi; Zhang, Shuo; Wang, Qiyue; Yang, Jing; Ng, FanLam; Liu, Xingjian; Qiu, Yu; Zhu, Rui; Wang, Huimei; Wolf, Christian; Zhang, Yanxia; Huo, Zhi-Ying; Ai, Y. L; Ma, Qinchun; Feng, Xiaotong; Bouwens, R. J (American Astronomical Society, 2024-04)
    A complete and pure sample of quasars with accurate redshifts is crucial for quasar studies and cosmology. In this paper, we present CatNorth, an improved Gaia Data Release 3 (Gaia DR3) quasar candidate catalog with more ...
  • The cause of the darkness of sun-spots 
    Evershed, John (University of Chicago Press, 1897)
  • Cause of the gegenschein 
    Evershed, John (The Observatory, 1899-01)

Search DSpace

Browse

My Account