Now showing items 1-18 of 18

    • Birds of a Feather? : Magellan/IMACS spectroscopy of the ultra-faint satellites Grus II, Tucana IV, and Tucana V 

      Simon, Josh D.; Santiago, Basilio Xavier; DES Collaboration (2020) [Journal article]
      We present Magellan/IMACS spectroscopy of three recently discovered ultra-faint Milky Way satellites, Grus II, Tucana IV, and Tucana V. We measure systemic velocities of vhel =-  110.0 0.5 - km s 1 , = - + vhel 15.9 1.7 ...
    • Farthest neighbor : the distant Milky Way satellite Eridanus II 

      Li, T. S.; Simon, Josh D.; Drlica-Wagner, Alex; Bechtol, Keith; Wang, M.; García-Bellido, Juan; Frieman, Joshua A.; Marshall, Jennifer L.; James, David J.; Strigari, Louis E.; Pace, Andrew B.; Balbinot, Eduardo; Zhang, Yuanyuan; Abbott, Timothy M. C.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Eifler, Tim; Flaugher, Brenna; Goldstein, Daniel Abraham; Gruen, Daniel; Gruendl, Robert A.; Gschwend, Julia de Figueiredo; Gutierrez, Gaston R.; Krause, Elisabeth; Kuehn, Kyler; Lin, H.; Maia, Marcio Antonio Geimba; March, Marisa Cristina; Menanteau, Felipe; Miquel, Ramon; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Sobreira, Flávia; Suchyta, Eric; Tarle, Gregory; Thomas, D.; Tucker, Douglas L.; Walker, Alistair; Wechsler, Risa H.; Wester, William Carl; Yanny, Brian; DES Collaboration (2017) [Journal article]
      We present Magellan/IMACS spectroscopy of the recently discovered Milky Way satellite EridanusII (Eri II). We identify 28 member stars in EriII, from which we measure a systemic radial velocity of vhel = 75.6 1.3 (stat.) ...
    • Globular cluster streams as galactic high-precision scales : the poster child Palomar 5 

      Kupper, Andreas Hans Wilhelm; Balbinot, Eduardo; Bonaca, Ana; Johnston, Kathryn V.; Hogg, D.W.; Kroupa, Pavel; Santiago, Basilio Xavier (2015) [Journal article]
      Using the example of the tidal stream of the Milky Way globular cluster Palomar 5 (Pal 5), we demonstrate how observational data on tidal streams can be efficiently reduced in dimensionality and modeled in a Bayesian ...
    • Milky Way satellite census : II. Galaxy–halo connection constraints including the impact of the Large Magellanic Cloud 

      Nadler, Ethan O.; Santiago, Basilio Xavier; DES Collaboration (2020) [Journal article]
      The population of Milky Way (MW) satellites contains the faintest known galaxies and thus provides essential insight into galaxy formation and dark matter microphysics. Here we combine a model of the galaxy–halo connection ...
    • Nearest neighbor : the low-mass Milky Way satellite Tucana III 

      Simon, Josh D.; Li, T. S.; Drlica-Wagner, Alex; Bechtol, Keith; Marshall, Jennifer L.; James, David J.; Wang, M.; Strigari, Louis E.; Balbinot, Eduardo; Kuehn, Kyler; Walker, Alistair; Abbott, Timothy M. C.; Allam, Sahar S.; Annis, James T.; Benoit-Lévy, Aurélien; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Doel, Peter; Fernandez, Enrique; Flaugher, Brenna; Frieman, Joshua A.; García-Bellido, Juan; Gaztañaga, Enrique; Goldstein, Daniel Abraham; Gruen, Daniel; Gutierrez, Gaston R.; Kuropatkin, Nikolay P.; Maia, Marcio Antonio Geimba; Martini, Paul; Menanteau, Felipe; Miller, Christopher J.; Miquel, Ramon; Neilsen, Eric H.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Rykoff, Eli; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Whiteway, L.; Yanny, Brian; DES Collaboration (2017) [Journal article]
      We present Magellan/IMACS spectroscopy of the recently discovered Milky Way satellite TucanaIII (Tuc III). We identify 26 member stars in TucIII from which we measure a mean radial velocity of vhel=−102.3±0.4 (stat.)±2.0(sys.) ...
    • On the accuracy of the perturbative approach for strong lensing : local distortion for pseudo-elliptical models 

      Dúmet-Montoya, Habib S.; Caminha, Gabriel Bartosch; Moraes, Bruno Azevedo Lemos; Makler, Martín; Gill, Mandeep S. S.; Santiago, Basilio Xavier (2013) [Journal article]
      The perturbative approach (PA) introduced by Alard provides analytic solutions for gravitational arcs by solving the lens equation linearized around the Einstein ring solution. This is a powerful method for lens inversion ...
    • Search for dark matter particles produced in association with a Higgs boson in proton-proton collisions at √s = 13 TeV 

      Sirunyan, A. M.; Silveira, Gustavo Gil da; CMS Collaboration (2020) [Journal article]
      A search for dark matter (DM) particles is performed using events with a Higgs boson candidate and large missing transverse momentum. The analysis is based on proton- proton collision data at a center-of-mass energy of 13 ...
    • Search for dark matter produced in association with a Higgs boson decaying to γγ or τ+τ- at √s = 13TeV 

      Sirunyan, A. M.; Silveira, Gustavo Gil da; CMS Collaboration (2018) [Journal article]
      A search for dark matter particles is performed by looking for events with large transverse momentum imbalance and a recoiling Higgs boson decaying to either a pair of photons or a pair of leptons. The search is based on ...
    • Search for dark matter produced in association with a single top quark or a top quark pair in proton-proton collisions at √s = 13 TeV 

      Sirunyan, A. M.; Silveira, Gustavo Gil da; CMS Collaboration (2019) [Journal article]
      A search for dark matter produced in association with top quarks in protonproton collisions at a center-of-mass energy of 13TeV is presented. The data set used corresponds to an integrated luminosity of 35.9 fb􀀀1 recorded ...
    • Search for gamma-ray emission from DES dwarf spheroidal galaxy candidates with Fermi-LAT data 

      Drlica-Wagner, Alex; Albert, Andrea; Bechtol, Keith; Wood, Matthew Dunseth; Strigari, Louis E.; Sánchez-Conde, Miguel A.; Baldini, Luca; Essig, Rouven; Cohen-Tanugi, Johann; Anderson, Brandon; Bellazzini, Ronaldo; Bloom, Elliott D.; Caputo, Regina; Cecchi, Claudia; Charles, Eric Andre; Chiang, James; De Angelis, Alessandro; Funk, Stefan; Fusco, Piergiorgio; Gargano, Fabio; Giglietto, Nico; Giordano, Francesco; Guiriec, Sylvain; Gustafsson, Michael; Kuss, Michael; Loparco, Francesco; Lubrano, Pasquale; Mirabal, N.; Mizuno, Tsunefumi; Morselli, Aldo; Ohsugi, Takashi; Orlando, Elena; Persic, Massimo; Raino, Silvia; Spada, Francesca Romana; Suson, Daniel J.; Zaharijas, Gabrijela; Zimmer, Stephan; Abbott, Timothy M. C.; Allam, Sahar S.; Balbinot, Eduardo; Bauer, Anne Hollister; Benoit-Lévy, Aurélien; Bernstein, Rebecca A.; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Burke, David Lyle; Carnero Rosell, Aurelio; Castander Serentill, Francisco Javier; Covarrubias, Ricardo A.; D'Andrea, Christopher B.; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Cunha, Carlos Eduardo; Eifler, Tim; Estrada, Juan; Evrard, August E.; Fausti Neto, Angelo; Fernandez, Enrique; Finley, David A.; Flaugher, Brenna; Frieman, Joshua A.; Gaztañaga, Enrique; Gerdes, David W.; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; Honscheid, K.; Jain, Bhuvnesh; James, David J.; Jeltema, Tesla E.; Kent, Stephen M.; Kron, Richard G.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; Luque Canaza, Elmer Fidel; Maia, Marcio Antonio Geimba; Makler, Martín; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Merritt, K. Wyatt; Miller, Christopher J.; Miquel, Ramon; Mohr, Joseph J.; Neilsen, Eric H.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Peoples, John; Petravick, Donald L.; Pieres, Adriano; Plazas Malagón, Andrés Alejandro; Queiroz, Anna Bárbara de Andrade; Romer, Anita K.; Roodman, Aaron; Rykoff, Eli; Sako, Masao; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Thomas, D.; Tucker, Douglas L.; Walker, Alistair; Wechsler, Risa H.; Wester, William Carl; Williams, P.; Yanny, Brian; Zuntz, J.; Fermi LAT Collaboration; DES Collaboration (2015) [Journal article]
      Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, ...
    • Search for heavy neutrinos and third-generation leptoquarks in hadronic states of two T leptons and two jets in proton-proton collisions at √s = 13 TeV 

      Sirunyan, A. M.; Silveira, Gustavo Gil da; CMS Collaboration (2019) [Journal article]
      A search for new particles has been conducted using events with two high transverse momentum leptons that decay hadronically and at least two energetic jets. The analysis is performed using data from proton-proton collisions ...
    • Search for natural and split supersymmetry in proton-proton collisions at √s =13 TeV in final states with jets and missing transverse momentum 

      Sirunyan, A. M.; Silveira, Gustavo Gil da; CMS Collaboration (2018) [Journal article]
      Abstract: A search for supersymmetry (SUSY) is performed in nal states comprising one or more jets and missing transverse momentum using data from proton-proton collisions at a centre-of-mass energy of 13TeV. The data were ...
    • Search for new physics in final states with a single photon and missing transverse momentum in proton-proton collisions at √s = 13 TeV 

      Sirunyan, A. M.; Silveira, Gustavo Gil da; CMS Collaboration (2019) [Journal article]
      A search is conducted for new physics in nal states containing a photon and missing transverse momentum in proton-proton collisions at p s = 13TeV, using the data collected in 2016 by the CMS experiment at the LHC, ...
    • Searching for dark matter annihilation in recently discovered Milky Way satellites with Fermi-LAT 

      Albert, Andrea; Anderson, Brandon; Bechtol, Keith; Drlica-Wagner, Alex; Meyer, Manuel; Sánchez-Conde, Miguel A.; Strigari, Louis E.; Wood, Matthew Dunseth; Abbott, Timothy M. C.; Abdalla, Filipe B.; Benoit-Lévy, Aurélien; Bernstein, Gary M.; Bernstein, Rebecca A.; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Crocce, Martin; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Costa, Luiz N. da; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Doel, Peter; Eifler, Tim; Evrard, August E.; Fausti Neto, Angelo; Finley, David A.; Flaugher, Brenna; Fosalba Vela, Pablo; Frieman, Joshua A.; Gerdes, David W.; Goldstein, Daniel Abraham; Gruen, Daniel; Gruendl, Robert A.; Honscheid, K.; James, David J.; Kent, Stephen M.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; Maia, Marcio Antonio Geimba; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Miller, Christopher J.; Miquel, Ramon; Neilsen, Eric H.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Reil, Kevin; Romer, Anita K.; Rykoff, Eli; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Vikram, Vinu; Walker, Alistair; Wechsler, Risa H.; Fermi LAT Collaboration; DES Collaboration (2017) [Journal article]
      We search for excess γ-ray emission coincident with the positions of confirmed and candidate Milky Way satellite galaxies using six years of data from the Fermi Large Area Telescope (LAT). Our sample of 45 stellar systems ...
    • Stellar kinematics and metallicities in the ultra-faint dwarf galaxy Reticulum II 

      Simon, Josh D.; Drlica-Wagner, Alex; Li, T. S.; Nord, Brian Dennis; Geha, Marla; Bechtol, Keith; Balbinot, Eduardo; Buckley-Geer, Elizabeth; Lin, H.; Marshall, Jennifer L.; Santiago, Basilio Xavier; Strigari, Louis E.; Wang, M.; Wechsler, Risa H.; Yanny, Brian; Abbott, Timothy M. C.; Bauer, Anne Hollister; Bernstein, Gary M.; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Capozzi, Diego; Carnero Rosell, Aurelio; Carrasco Kind, Matías; D'Andrea, Christopher B.; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Dodelson, Scott; Cunha, Carlos Eduardo; Estrada, Juan; Evrard, August E.; Fausti Neto, Angelo; Fernandez, Enrique; Finley, David A.; Flaugher, Brenna; Frieman, Joshua A.; Gaztañaga, Enrique; Gerdes, David W.; Gruen, Daniel; Gruendl, Robert A.; Honscheid, K.; James, David J.; Kent, Stephen M.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Maia, Marcio Antonio Geimba; March, Marisa Cristina; Martini, Paul; Miller, Christopher J.; Miquel, Ramon; Ogando, Ricardo L.C.; Romer, Anita K.; Roodman, Aaron; Romer, Anita K.; Sako, Masao; Sanchez-Alvaro, Eusebio; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Tucker, Douglas L.; Vikram, Vinu; Walker, Alistair; Wester, William Carl; DES Collaboration (2015) [Journal article]
      We present Magellan/M2FS, Very Large Telescope/GIRAFFE, and Gemini South/GMOS spectroscopy of the newly discovered Milky Way satellite Reticulum II. Based on the spectra of 25 Ret II member stars selected from Dark Energy ...
    • The first tidally disrupted ultra-faint dwarf galaxy? : a spectroscopic analysis of the Tucana III stream 

      Li, T. S.; Santiago, Basilio Xavier; DES Collaboration (2018) [Journal article]
      We present a spectroscopic study of the tidal tails and core of the Milky Way satellite Tucana III, collectively referred to as the Tucana III stream, using the 2dF+AAOmega spectrograph on the Anglo-Australian Telescope ...
    • The statistics of ΛCDM halo concentrations 

      Fausti Neto, Angelo; Gao, Liang; Bett, Philip; Cole, Shaun; Navarro, Julio F.; Frenk, Carlos S.; White, Simon D. M.; Springel, Volker; Jenkins, Adrian (2007) [Journal article]
      We use the Millennium Simulation (MS) to study the statistics of Λ cold dark matter (ΛCDM) halo concentrations at z = 0. Our results confirm that the average halo concentration declines monotonically with mass; the ...
    • Weak lensing and spectroscopic analysis of the nearby dissociative merging galaxy cluster Abell 3376 

      Oliveira, Rogério Monteiro de; Lima Neto, Gastão Cesar Bierrenbach; Cypriano, Eduardo Serra; Machado, Rubens Eduardo Garcia; Capelato, Hugo Vicente; Laganá, Tatiana Ferraz; Durret, Florence; Bagchi, Joydeep (2017) [Journal article]
      The galaxy cluster Abell 3376 is a nearby (¯z = 0.046) dissociative merging cluster surrounded by two prominent radio relics and showing an X-ray comet-like morphology. The merger system is comprised of the subclusters ...