R. Foley — Scifaro

Studying stellar populations in Omega Centauri with phylogenetics

The nature and formation history of our Galaxy's largest and most enigmatic stellar cluster, known as Omega Centauri (ocen) remains debated. Here, we offer a novel approach to disentangling the complex stellar populations within ocen based…

Astrophysics of Galaxies · Physics 2025-07-23 P. Jofré , C. Aguilera-Gómez , P. Villarreal , F. A. Cubillos , P. Das , X. Hua , R. Yates , P. Silva , S. Vitali , T. Peña , T. Signor , K. Walsen , P. Tissera , A. Rojas-Arriagada , E. Johnston , G. Gilmore , R. Foley

SN 2021foa: The "Flip-Flop" Type IIn / Ibn supernova

We present a comprehensive analysis of the photometric and spectroscopic evolution of SN~2021foa, unique among the class of transitional supernovae for repeatedly changing its spectroscopic appearance from…

High Energy Astrophysical Phenomena · Physics 2024-10-29 D. Farias , C. Gall , G. Narayan , S. Rest , V. A. Villar , C. R. Angus , K. Auchettl , K. W. Davis , R. Foley , A. Gagliano , J. Hjorth , L. Izzo , C. D. Kilpatrick , H . M. L. Perkins , E. Ramirez-Ruiz , C. L. Ransome , A. Sarangi , R. Yarza , D. A. Coulter , D. O. Jones , N. Khetan , A. Rest , M. R. Siebert , J. J. Swift , K. Taggart , S. Tinyanont , P. Wrubel , T. J. L. de Boer , K. E. Clever , A. Dhara , H. Gao , C. -C. Lin

JWST NIRSpec+MIRI Observations of the nearby Type IIP supernova 2022acko

We present JWST spectral and photometric observations of the Type IIP supernova (SN) 2022acko at ~50 days past explosion. These data are the first JWST spectral observations of a core-collapse SN. We identify ~30 different H I features,…

High Energy Astrophysical Phenomena · Physics 2024-01-29 M. Shahbandeh , C. Ashall , P. Hoeflich , E. Baron , O. Fox , T. Mera , J. DerKacy , M. D. Stritzinger , B. Shappee , D. Law , J. Morrison , T. Pauly , J. Pierel , K. Medler , J. Andrews , D. Baade , A. Bostroem , P. Brown , C. Burns , A. Burrow , A. Cikota , D. Cross , S. Davis , T. de Jaeger , A. Do , Y. Dong , E. Hsiao , I. Dominguez , L. Galbany , D. Janzen , J. Jencson , E. Hoang , E. Karamehmetoglu , B. Khaghani , K. Krisciunas , S. Kumar , J. Lu , P. Mazzali , N. Morrell , F. Patat , J. Pearson , C. Pfeffer , L. Wang , Y. Yang , Y. Z. Cai , Y. Camacho-Neves , N. Elias-Rosa , M. Lundquist , J. Maund , M. Phillips , A. Rest , N. Retamal , S. Stangl , M. Shrestha , C. Stevens , N. Suntzeff , C. Telesco , M. Tucker , R. Foley , S. Jha , L. Kwok , C. Larison , N. LeBaron , S. Moran , J. Rho , I. Salmaso , J. Schmidt , S. Tinyanont

Science Cases for the Keck Wide-Field Imager

The Keck Wide-Field Imager (KWFI) is a proposed 1-degree diameter field of view UV-sensitive optical camera for Keck prime focus. KWFI will be the most powerful optical wide-field camera in the world and the only such 8m-class camera…

Instrumentation and Methods for Astrophysics · Physics 2022-07-26 J. Cooke , C. Angus , K. Auchettl , J. Bally , B. Bolin , S. Brough , J. N. Burchett , R. Foley , G. Foran , D. Forbes , J. Gannon , R. Hirai , G. G. Kacprzak , R. Margutti , C. Martinez-Lombilla , U. Mestric , A. Moller , A. Rest , J. Rhodes , R. M. Rich , F. Schussler , R. Wainscoat , J. Walawender , I. Wold , J. Zhang

ASTRO2020 White Paper: JWST: Probing the Epoch of Reionization with a Wide Field Time-Domain Survey

A major scientific goal of JWST is to probe the epoch of re-ionization of the Universe at z above 6, and up to 20 and beyond. At these redshifts, galaxies are just beginning to form and the observable objects are early black holes,…

Instrumentation and Methods for Astrophysics · Physics 2019-03-19 L. Wang , J. Mould , D. Baade , E. Baron , V. Bromm , T. -W. Chen , J. Cooke , X. Fan , R. Foley , A. Fruchter , A. Gal-Yam , A. Heger , P. Hoeflich , D. A. Howell , A. Kashlinsky , A. Kim , A. Koekemoer , J. Mather , P. Mazzali , F. Pacucci , F. Patat , E. Pian , S. Perlmutter , A. Rest , D. Rubin , D. Sand , C. Stubbs , N. Suntzeff , X. -F. Wang , D. Whalen , J. C. Wheeler , B. Yue

Observation and Confirmation of Six Strong Lensing Systems in The Dark Energy Survey Science Verification Data

We report the observation and confirmation of the first group- and cluster-scale strong gravitational lensing systems found in Dark Energy Survey (DES) data. Through visual inspection of data from the Science Verification (SV) season, we…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-17 B. Nord , E. Buckley-Geer , H. Lin , H. T. Diehl , J. Helsby , N. Kuropatkin , A. Amara , T. Collett , S. Allam , G. Caminha , C. De Bom , S. Desai , H. Dúmet-Montoya , M. Elidaiana da S. Pereira , D. A. Finley , B. Flaugher , C. Furlanetto , H. Gaitsch , M. Gill , K. W. Merritt , A. More , D. Tucker , E. S. Rykoff , E. Rozo , F. B. Abdalla , A. Agnello , M. Auger , R. J. Brunner , M. Carrasco Kind , F. J. Castander , C. E. Cunha , L. N. da Costa , R. Foley , D. W. Gerdes , K. Glazebrook , J. Gschwend , W. Hartley , R. Kessler , D. Lagattuta , G. Lewis , M. A. G. Maia , M. Makler , F. Menanteau , A. Niernberg , D. Scolnic , J. D. Vieira , R. Gramillano , T. M. C. Abbott , M. Banerji , A. Benoit-Lévy , D. Brooks , D. L. Burke , D. Capozzi , A. Carnero Rosell , J. Carretero , C. B. D'Andrea , J. P. Dietrich , P. Doel , A. E. Evrard , J. Frieman , E. Gaztanaga , D. Gruen , K. Honscheid , D. J. James , K. Kuehn , T. S. Li , M. Lima , J. L. Marshall , P. Martini , P. Melchior , R. Miquel , E. Neilsen , R. C. Nichol , R. Ogando , A. A. Plazas , A. K. Romer , M. Sako , E. Sanchez , V. Scarpine , M. Schubnell , I. Sevilla-Noarbe , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , J. Thaler , A. R. Walker , W. Wester , Y. Zhang , the DES Collaboration

SN 2012au: A Golden Link Between Superluminous Supernovae and Their Lower-Luminosity Counterparts

We present optical and near-infrared observations of SN 2012au, a slow-evolving supernova (SN) with properties that suggest a link between subsets of energetic and H-poor SNe and superluminous SNe. SN 2012au exhibited conspicuous SN Ib-like…

High Energy Astrophysical Phenomena · Physics 2015-06-15 D. Milisavljevic , A. Soderberg , R. Margutti , M. Drout , G. Marion , N. Sanders , E. Hsiao , R. Lunnan , R. Chornock , R. Fesen , J. Parrent , E. Levesque , E. Berger , R. Foley , P. Challis , R. Kirshner , J. Dittmann , A. Bieryla , A. Kamble , S. Chakroborti , G. De Rosa , M. Fausnaugh , K. Hainline , C. Chen , R. Hickox , N. Morrell , M. Phillips , M. Stritzinger

Ultra-Luminous Supernovae as a New Probe of the Interstellar Medium in Distant Galaxies

We present the Pan-STARRS1 discovery and light curves, and follow-up MMT and Gemini spectroscopy of an ultra-luminous supernova (ULSN; dubbed PS1-11bam) at a redshift of z=1.566 with a peak brightness of M_UV=-22.3 mag. PS1-11bam is one of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 E. Berger , R. Chornock , R. Lunnan , R. Foley , I. Czekala , A. Rest , C. Leibler , A. M. Soderberg , K. Roth , G. Narayan , M. E. Huber , D. Milisavljevic , N. E. Sanders , M. Drout , R. Margutti , R. P. Kirshner , G. H. Marion , P. J. Challis , A. G. Riess , S. J. Smartt , W. S. Burgett , J. N. Heasley , N. Kaiser , R. -P. Kudritzki , E. A. Magnier , M. McCrum , P. A. Price , K. Smith , J. L. Tonry , R. J. Wainscoat

Optical followup of galaxy clusters detected by the South Pole Telescope

The South Pole Telescope (SPT) is a 10 meter telescope operating at mm wavelengths. It has recently completed a three-band survey covering 2500 sq. degrees. One of the survey's main goals is to detect galaxy clusters using Sunyaev-Zeldovich…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-29 S. Desai , R. Armstrong , M. L. N. Ashby , B. Bayliss , G. Bazin , B. Benson , E. Bertin , L. Bleem , M. Brodwin , A. Clochiatti , R. Foley , M. Gladders , A. H. Gonzalez , F. W. High , J. Liu , J. Mohr , A. Rest , J. Ruel , A. Saro , J. Song , B. Stalder , A. Stanford , C. Stubbs , A. Zenteno

A Survey for Supernovae in Massive High-Redshift Clusters

We describe our ongoing program designed to measure the SN-Ia rate in a sample of massive z=0.5-0.9 galaxy clusters. The SN-Ia rate is a poorly known observable, especially at high z, and in cluster environments. The SN rate and its…

Astrophysics · Physics 2008-11-26 Keren Sharon , A. Gal-Yam , D. Maoz , M. Donahue , H. Ebeling , R. Ellis , A. Filippenko , R. Foley , W. Freedman , R. Kirshner , J. -P. Kneib , T. Matheson , J. Mulchaey , V. Sarajedini , M. Voit

An optical supernova associated with the X-ray flash XRF 060218

Long-duration gamma-ray bursts (GRBs) are associated with type Ic supernovae that are more luminous than average and that eject material at very high velocities. Less-luminous supernovae were not hitherto known to be associated with GRBs,…

Astrophysics · Physics 2008-11-26 E. Pian , P. A. Mazzali , N. Masetti , P. Ferrero , S. Klose , E. Palazzi , E. Ramirez-Ruiz , S. E. Woosley , C. Kouveliotou , J. Deng , A. V. Filippenko , R. Foley , J. Fynbo , D. A. Kann , W. Li , J. Hjorth , K. Nomoto , F. Patat , D. Sauer , J. Sollerman , P. M. Vreeswijk , E. W. Guenther , A. Levan , P. O'Brien , N. Tanvir , R. A. M. J. Wijers , C. Dumas , O. Hainaut , D. S. Wong , D. Baade , L. Wang , L. Amati , E. Cappellaro , A. J. Castro-Tirado , S. Ellison , F. Frontera , A. S. Fruchter , J. Greiner , K. Kawabata , C. Ledoux , K. Maeda , P. Moller , L. Nicastro , E. Rol , R. Starling

The host galaxy of GRB031203: a new spectroscopic study

The host galaxy of the long-duration gamma-ray burst (GRB) 031203 (HG031203) offers a precious opportunity to study in detail the environment of a nearby GRB. The aim is to better characterize this galaxy and analyse the possible evolution…

Astrophysics · Physics 2007-10-27 R. Margutti , G. Chincarini , S. Covino , G. Tagliaferri , S. Campana , M. Della Valle , A. V. Filippenko , F. Fiore , R. Foley , D. Fugazza , P. Giommi , D. Malesani , A. Moretti , L. Stella