ALMA view of RX J1131-1231: Sub-kpc CO (2-1) mapping of a molecular disk in a lensed star-forming quasar host galaxy

Autor: H. R. Stacey, Miroslava Dessauges-Zavadsky, Sherry H. Suyu, S. Vegetti, Dominique Sluse, John McKean, Léon V. E. Koopmans, Christopher D. Fassnacht, Frederic Courbin, D. Paraficz, M. Rybak

Publikováno v: Astronomy and Astrophysics, 613, A34
Astronomy and astrophysics, 613. EDP Sciences

We present ALMA 2-mm continuum and CO (2-1) spectral line imaging of the gravitationally lensed z=0.654 star-forming/quasar composite RX J1131-1231 at 240-400 mas angular resolution. The continuum emission is found to be compact and coincident with t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78c698ee330195e629020d55216a846f

ASTErIsM - Application of topometric clustering algorithms in automatic galaxy detection and classification

Autor: D. Paraficz, Pierre Dubath, Frederic Courbin, Jean-Paul Kneib, Andrea Tramacere

We present a study on galaxy detection and shape classification using topometric clustering algorithms. We first use the DBSCAN algorithm to extract, from CCD frames, groups of adjacent pixels with significant fluxes and we then apply the DENCLUE alg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76ebb2dbca83cdbd31451b60e768ab83

Gravitational lenses as cosmic rulers: $\mathsf{\Omega_{m}}$, $\mathsf{\Omega_{\Lambda}}$ from time delays and velocity dispersions

Autor: D. Paraficz, Jens Hjorth

Publikováno v: Astronomy & Astrophysics. 507:L49-L52

We show that a cosmic standard ruler can be constructed from the joint measurement of the time delay, , between gravitationally lensed quasar images and the velocity dispersion, σ , of the lensing galaxy. This is specifically shown, for a singular i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1cb8675057af847fcc4a2d1b0d631233
https://doi.org/10.1051/0004-6361/200913307

The Afterglows of Swift-era Gamma-ray Bursts. I. Comparing pre-Swift and Swift-era Long/Soft (Type II) GRB Optical Afterglows

Autor: L. A. Antonelli, J. M. Castro Cerón, J. E. Ovaldsen, Sylvio Klose, R. Karimov, Silvia Piranomonte, Elena P. Pavlenko, P. D'Avanzo, Johan P. U. Fynbo, Filippo Mannucci, D. B. Malesani, Sergei Guziy, Markus Böttcher, M. Jeĺinek, A. J. Castro-Tirado, Valerio D'Elia, M. Della Valle, Yu. S. Efimov, Andrew J. Levan, Ü. Kızıloǧlu, Mansur Ibrahimov, D. Paraficz, David Alexander Kann, M. Gålfalk, A. Sergeev, Alexander Kutyrev, Vasilij Rumyantsev, C. M. Martin, Ehud Nakar, Adria C. Updike, Jesper Sollerman, F. Grundahl, Gianpiero Tagliaferri, Steve Schulze, S. Gupta, J. Telting, Luigi Stella, R. A. Burenin, A. Pozanenko, Irek Khamitov, Darach Watson, Nestor Mirabal, Bringfried Stecklum, Peter Laursen, A. de Ugarte Postigo, Nathaniel R. Butler, R. Salinas, B. E. Cobb, Javier Gorosabel, I. F. Bikmaev, Andrea Rossi, G. Chincarini, A. C. Wilson, Jay P. Norris, Dong Xu, Bing Zhang, A. Volnova, Maksim V. Andreev, P. Ferrero, Nial R. Tanvir, Myungshin Im, Pall Jakobsson, Klaas Wiersema, Vincenzo Testa, Petr Kubánek, K. Holhjem, G. L. Israel, B. L. Jensen, E. Klunko, A. Mescheryakov, B. M. Hafizov, Dino Fugazza, Stefano Covino, V. Biryukov, Jens Hjorth, D. Sharapov

Publikováno v: Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

We have gathered optical photometry data from the literature on a large sample of Swift-era gamma-ray burst (GRB) afterglows including GRBs up to September 2009, for a total of 76 GRBs, and present an additional three pre-Swift GRBs not included in a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10c10dd25aef19fb78c68b796f7de1bb

Extinction Curves of Lensing Galaxies out to z=1

Autor: Sune Toft, I. Burud, D. Paraficz, Árdís Elíasdóttir, Jens Hjorth

We present a survey of the extinction properties of ten lensing galaxies, in the redshift range z = 0.04 - 1.01, using multiply lensed quasars imaged with the ESO VLT in the optical and near infrared. The multiple images act as 'standard light source

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0833ea6d0776dbb8411df47214496320