Gaston Folatelli
National Scientific and Technical Research Council
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Gaston Folatelli.
The Astrophysical Journal | 2008
M. Kowalski; D. Rubin; G. Aldering; Rui J. Agostinho; A. Amadon; R. Amanullah; C. Balland; K. Barbary; G. Blanc; Peter J. Challis; A. Conley; Natalia Connolly; R. Covarrubias; Kyle S. Dawson; Se E. Deustua; Richard S. Ellis; S. Fabbro; V. Fadeyev; Xiaohui Fan; B. Farris; Gaston Folatelli; B. L. Frye; G. Garavini; Elinor L. Gates; G. Goldhaber; Ariel Goobar; Donald E. Groom; J. Haissinski; D. Hardin; I. M. Hook
We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations. This Union compilation of 414 SNe Ia, which reduces to 307 SNe after selection cuts, includes the recent large samples of SNe Ia from the Supernova Legacy Survey and ESSENCE Survey, the older data sets, as well as the recently extended data set of distant supernovae observed with the Hubble Space Telescope (HST). A single, consistent, and blind analysis procedure is used for all the various SN Ia subsamples, and a new procedure is implemented that consistently weights the heterogeneous data sets and rejects outliers. We present the latest results from this Union compilation and discuss the cosmological constraints from this new compilation and its combination with other cosmological measurements (CMB and BAO). The constraint we obtain from supernovae on the dark energy density is Ω_Λ = 0.713^(+0.027)_(−0.029)(stat)^(+ 0.036)_(−0.039)(sys), for a flat, ΛCDM universe. Assuming a constant equation of state parameter, w, the combined constraints from SNe, BAO, and CMB give w = − 0.969^(+ 0.059)_(−0.063)(stat)^(+ 0.063)_(−0.066)(sys) . While our results are consistent with a cosmological constant, we obtain only relatively weak constraints on a w that varies with redshift. In particular, the current SN data do not yet significantly constrain w at z > 1. With the addition of our new nearby Hubble-flow SNe Ia, these resulting cosmological constraints are currently the tightest available.
The Astrophysical Journal | 2003
Robert Andrew Knop; Isobel M. Hook; C. Lidman; Bradley E. Schaefer; A. Conley; B.C. Lee; Andrew S. Fruchter; Ariel Goobar; Nino Panagia; M. Sullivan; Gaston Folatelli; S. Nobili; G. Goldhaber; V. Stanishev; Sebastien Fabbro; William Michael Wood-Vasey; G. Sainton; Guillaume Blanc; Eric P. Smith; J. Raux; Nancy A. Walton; G. Garavini; A. G. Kim; Rachel Annette Gibbons; Mamoru Doi; Juan E. Mendez; P. Astier; Carlton R. Pennypacker; K. Garton; G. Aldering
We report measurements of
The Astrophysical Journal | 2010
Rahman Amanullah; C. Lidman; D. Rubin; Gregory Scott Aldering; P. Astier; K. Barbary; M. S. Burns; A. Conley; Kyle S. Dawson; Susana Elizabeth Deustua; Mamoru Doi; S. Fabbro; L. Faccioli; H. K. Fakhouri; Gaston Folatelli; Andrew S. Fruchter; Hisanori Furusawa; G. Garavini; G. Goldhaber; Ariel Goobar; Donald E. Groom; I. M. Hook; D. A. Howell; Nobunari Kashikawa; A. G. Kim; R. A. Knop; M. Kowalski; Eric V. Linder; Joshua Meyers; S. Nobili
Omega_M
Publications of the Astronomical Society of the Pacific | 2006
Mario Hamuy; Gaston Folatelli; Nidia I. Morrell; Mark M. Phillips; Nicholas B. Suntzeff; S. E. Persson; M. Roth; Sergio Gonzalez; Wojtek Krzeminski; Carlos Contreras; Wendy L. Freedman; David C. Murphy; Barry F. Madore; P. Wyatt; Jose Manuel Campillos Maza; Alexei V. Filippenko; Weidong Li; Philip A. Pinto
,
Publications of the Astronomical Society of the Pacific | 2007
Mark M. Phillips; Weidong Li; Joshua A. Frieman; Sergei I. Blinnikov; D. L. DePoy; Jose Luis Palacio Prieto; Peter A. Milne; Carlos Contreras; Gaston Folatelli; Nidia I. Morrell; Mario Hamuy; Nicholas B. Suntzeff; M. Roth; Sergio Gonzalez; Wojtek Krzeminski; Alexei V. Filippenko; Wendy L. Freedman; Ryan Chornock; Saurabh W. Jha; Barry F. Madore; S. E. Persson; Christopher R. Burns; P. Wyatt; David C. Murphy; Ryan J. Foley; Mohan Ganeshalingam; F. J. D. Serduke; Kevin Krisciunas; Bruce A. Bassett; Andrew Cameron Becker
Omega_Lambda
The Astrophysical Journal | 2006
A. Conley; G. Goldhaber; Lifan Wang; G. Aldering; Rahman Amanullah; E. D. Commins; V. Fadeyev; Gaston Folatelli; G. Garavini; R. Gibbons; Ariel Goobar; Donald E. Groom; I. M. Hook; D. A. Howell; A. G. Kim; R. A. Knop; Marek Kowalski; Natalia V. Kuznetsova; C. Lidman; S. Nobili; P. Nugent; R. Pain; S. Perlmutter; E. Smith; A. L. Spadafora; V. Stanishev; M. Strovink; R. C. Thomas; William Michael Wood-Vasey
, and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of high-redshift supernovae that confirms previous supernova evidence for an accelerating Universe. Combined with earlier Supernova Cosmology Project data, the new supernovae yield a flat-universe measurement of the mass density
Astronomy and Astrophysics | 2007
G. Garavini; Gaston Folatelli; S. Nobili; Gregory Scott Aldering; Rahman Amanullah; P. Antilogus; P. Astier; G. Blanc; T. J. Bronder; M. S. Burns; A. Conley; Susana Elizabeth Deustua; Mamoru Doi; S. Fabbro; V. Fadeyev; R. Gibbons; G. Goldhaber; Ariel Goobar; Donald E. Groom; I. M. Hook; D. A. Howell; Nobunari Kashikawa; A. G. Kim; M. Kowalski; N. Kuznetsova; Ben Lee; C. Lidman; J. Mendez; Kentaro Motohara; Peter E. Nugent
Omega_M=0.25^{+0.07}_{-0.06}
The Astrophysical Journal | 2015
Keiichi Maeda; T. Hattori; D. Milisavljevic; Gaston Folatelli; Maria Rebecca Drout; Hanindyo Kuncarayakti; Raffaella Margutti; Atish Kamble; Alicia M. Soderberg; Masaomi Tanaka; Miho Kawabata; Koji S. Kawabata; Masayuki Yamanaka; K. Nomoto; Ji Hoon Kim; J. D. Simon; Mark M. Phillips; Jerod T. Parrent; Tatsuya Nakaoka; Takashi J. Moriya; Akira Suzuki; Katsutoshi Takaki; Miho N. Ishigaki; Itsuki Sakon; Akito Tajitsu; Masanori Iye
(statistical)
Astronomy and Astrophysics | 2015
Hanindyo Kuncarayakti; Keiichi Maeda; M. C. Bersten; Gaston Folatelli; Nidia I. Morrell; E. Y. Hsiao; S. González-Gaitán; J. P. Anderson; Mario Hamuy; T. de Jaeger; C. P. Gutiérrez; Koji S. Kawabata
pm0.04
Astronomy and Astrophysics | 2015
E. Y. Hsiao; Christopher R. Burns; Carlos Contreras; P. Höflich; David J. Sand; G. H. Marion; Mark M. Phillips; Maximilian D. Stritzinger; S. González-Gaitán; R. Mason; Gaston Folatelli; E. Parent; Christine M. Gall; Rahman Amanullah; G. C. Anupama; I. Arcavi; D. P. K. Banerjee; Y. Beletsky; Guillermo A. Blanc; J. S. Bloom; Peter J. Brown; Abdo Campillay; Y. Cao; A. De Cia; T. Diamond; Wendy L. Freedman; C. Gonzalez; Ariel Goobar; S. Holmbo; D. A. Howell
(identified systematics), or equivalently, a cosmological constant of
