Search Results - "Terlevich, R. J."

Lyα Emission in Starbursts: Implications for Galaxies at High Redshift by Mas-Hesse, J. M, Kunth, D, Tenorio-Tagle, G, Leitherer, C, Terlevich, R. J, Terlevich, E

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The cosmological evolution of the QSO luminosity density and of the star formation rate by Boyle, B. J., Terlevich, Roberto J.

“…We demonstrate that the evolution of the QSO luminosity density with epoch displays a striking similarity to the cosmological evolution of the field galaxy…”
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Carbon in Spiral Galaxies from HUBBLE SPACE TELESCOPE Spectroscopy by Garnett, D. R, Shields, G. A, Peimbert, M, Torres-Peimbert, S, Skillman, E. D, Dufour, R. J, Terlevich, E, Terlevich, R. J

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SN 1988Z: spectro-photometric catalogue and energy estimates by Aretxaga, Itziar, Benetti, S., Terlevich, R. J., Fabian, A. C., Cappellaro, E., Turatto, M., Della Valle, M.

“…We present a spectro-photometric catalogue of the evolution of supernova 1988Z, which combines new and published observations in the radio, optical and X-ray…”
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Seyfert 1 Mutation of the Classical Seyfert 2 Nucleus NGC 7582 by Aretxaga, Itziar, Joguet, B, Kunth, D, Melnick, J, Terlevich, R. J

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New diagnostic methods for emission-line galaxies in deep surveys by Rola, Cláudia S., Terlevich, Elena, Terlevich, Roberto J.

“…We present new quantitative classification methods for emission-line galaxies, which are specially designed to be used in deep galaxy redshift surveys. A good…”
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New Observations with Gemini and GTC of the VHE Blazar KUV 00311-1938: About Its Redshift and Environment by Pichel, A., Donzelli, C., Rosa-Gonzalez, D., Alonso, M. Fernandez, Rovero, A. C., Muriel, H., Mayya, Y. D., Aretxaga, I., González, J. Becerra, Carramiñana, A., Mendez-Abreu, J., Vega, O., Terlevich, E., Terlevich, R. J.

“…Extragalactic very-high-energy (VHE; E > 100 GeV) sources are unique objects to study the most powerful particle accelerators in nature, as active galactic…”
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The primordial helium abundance from observations of extragalactic H II regions by Pagel, B. E. J., Simonson, E. A., Terlevich, R. J., Edmunds, M. G.

“…The pre-galactic (assumed primordial) helium mass fraction YP is determined to be $0.228\pm0.005\,\text{(s.e.)}\,\text{or}\,{Y}_\text{P}\lt0.242$ with 95 per…”
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New GTC spectroscopic data and a statistical study to better constrain the redshift of the BL Lac RGB J2243 + 203 by Rosa González, D, Muriel, H, Mayya, Y D, Aretxaga, I, Becerra González, J, Carramiñana, A, Méndez-Abreu, J, Vega, O, Terlevich, E, Coutiño de León, S, Furniss, A, Longinotti, A L, Terlevich, R J, Pichel, A C, Rovero, A C, Donzelli, C

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Stellar populations in the nuclear regions of nearby radio galaxies by Aretxaga, Itziar, Terlevich, Elena, Terlevich, Roberto J., Cotter, Garret, Díaz, Ángeles I.

“…We present optical spectra of the nuclei of seven luminous (P178 MHz≳1025 W Hz−1 Sr−1) nearby (z<0.08) radio galaxies, which mostly correspond to the FR II…”
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Optical monitoring of quasars — I. Variability by Garcia, Aurea, Sodré, Laerte, Jablonski, Francisco J., Terlevich, Roberto J.

“…We present an analysis of quasar variability from data collected during a photometric monitoring of 50 objects carried out at CNPq/Laborat ório Nacional de…”
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QSO variability: probing the starburst model by Aretxaga, Itziar, Femandes, Roberto Cid, Terlevich, Roberto J.

“…The consistency of the starburst model for AGN is tested using the optical variability observed in large data bases of QSOs. Theoretical predictions for the…”
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The cosmological evolution of colour gradients in spheroids by Friaça, A.C.S., Terlevich, R.J.

“…The analysis of the four-colour maps of galaxies in the Hubble Deep Field (HDF) has revealed, in the sample of 0.4<z<1 early-type field galaxies, the existence…”
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Lyman break galaxies as young spheroids by Friaça, A. C. S., Terlevich, R. J.

“…We investigate the nature of Lyman break galaxies (LBGs) using a chemodynamical model for the evolution of galaxies. Our model predicts an early (the first…”
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A supernova at Z = 0.458 and implications for measuring the cosmological deceleration by Perlmutter, S., Pennypacker, C. R., Goldhaber, G., Goobar, A., Muller, R. A., Newberg, H. J. M., Desai, J., Kim, A. G., Kim, M. Y., Small, I. A., Boyle, B. J., Crawford, C. S., McMahon, R. G., Bunclark, P. S., Carter, D., Irwin, M. J., Terlevich, R. J., Ellis, R. S., Glazebrook, K., Couch, W. J., Mould, J. R., Small, T. A., Abraham, R. G.

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New D – σ results for Coma cluster ellipticals by Lucey, J. R., Guzmán, R., Carter, D., Terlevich, R. J.

“…We present velocity dispersions (σ) and photometric diameters (D) for 51 ellipticals in the Coma cluster. Unlike previous studies, our sample includes many…”
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HI Observations of NGC 1068 by Brinks, E, Skillman, Ed, Terlevich, Rj, Terlevich, E

“…Neutral hydrogen is an important tracer of galactic dynamics. Hence, observations of the detailed structure and kinematics of HI are vital in order to…”
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Young ellipticals at high redshift by Terlevich, Roberto J., Boyle, B. J.

“…Recent work has raised the intriguing possibility that the activity seen in many active galactic nuclei (AGN) may be powered solely by young stars and…”
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NEW MEASUREMENTS OF HELIUM IN H II GALAXIES by PAGEL, B. E. J., TERLEVICH, R. J., MELNICK, JORGE

“…Previous determinations of Yp and dY/dZ from emission-line spectra of extragalactic H II regions are open to some criticism because of their treatment of the…”
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Formation and evolution of elliptical galaxies and QSO activity by Friaça, Amancio C. S., Terlevich, Roberto J.

“…We present the results of a numerical code that combines multi-zone chemical evolution with 1D hydrodynamics to follow in detail the evolution and radial…”
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