Navegação Ciências Exatas e da Terra por Autor "Goldstein, Daniel Abraham"
Resultados 1-12 de 12
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A dark energy camera search for missing supergiants in the LMC after the advanced LIGO gravitational-wave event GW150914
(2016) [Artigo de periódico]The collapse of a stellar core is expected to produce gravitational waves (GWs), neutrinos, and in most cases a luminous supernova. Sometimes, however, the optical event could be significantly less luminous than a supernova ... -
DES13S2cmm : the first superluminous supernova from the Dark Energy Survey
(2015) [Artigo de periódico]We present DES13S2cmm, the first spectroscopically-confirmed superluminous supernova (SLSN) from the Dark Energy Survey (DES).We briefly discuss the data and search algorithm used to find this event in the first year of ... -
Farthest neighbor : the distant Milky Way satellite Eridanus II
(2017) [Artigo de periódico]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.) ... -
Nearest neighbor : the low-mass Milky Way satellite Tucana III
(2017) [Artigo de periódico]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.) ... -
Observation of two new L4 Neptune Trojans in the Dark Energy Survey supernova fields
(2016) [Artigo de periódico]We report the discovery of the eighth and ninth known Trojans in stable orbits around Neptune’s leading Lagrange point, L4. The objects 2014QO441 and 2014QP441 were detected in data obtained during the 2013–14 and 2014–15 ... -
Searching for dark matter annihilation in recently discovered Milky Way satellites with Fermi-LAT
(2017) [Artigo de periódico]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 ... -
A study of quasar selection in the supernova fields of the Dark Energy Survey
(2017) [Artigo de periódico]We present a study of quasar selection using the supernova fields of the Dark Energy Survey (DES). We used a quasar catalog from an overlapping portion of the SDSS Stripe 82 region to quantify the completeness and efficiency ... -
The Dark Energy Survey : more than dark energy – an overview
(2016) [Artigo de periódico]This overview paper describes the legacy prospect and discovery potential of the Dark Energy Survey (DES) beyond cosmological studies, illustrating it with examples from the DES early data. DES is using a wide-field camera ... -
The Dark Energy Survey view of the Sagittarius stream : discovery of two faint stellar system candidates
(2017) [Artigo de periódico]We report the discovery of two new candidate stellar systems in the constellation of Cetus using the data from the first two years of the Dark Energy Survey (DES). The objects, DES J0111−1341 and DES J0225+0304, are located ... -
The evolution of active galactic nuclei in clusters of galaxies from the Dark Energy Survey
(2017) [Artigo de periódico]The correlation between active galactic nuclei (AGNs) and environment provides important clues to AGN fuelling and the relationship of black hole growth to galaxy evolution. In this paper, we analyse the fraction of galaxies ... -
The redMaPPer galaxy cluster catalog from des science verification data
(2016) [Artigo de periódico]We describe updates to the redMaPPer algorithm, a photometric red-sequence cluster finder specifically designed for large photometric surveys. The updated algorithm is applied to 150 deg2 of Science Verification (SV) data ... -
VDES J2325−5229 a z = 2.7 gravitationally lensed quasar discovered using morphology-independent supervised machine learning
(2017) [Artigo de periódico]We present the discovery and preliminary characterization of a gravitationally lensed quasar with a source redshift zs = 2.74 and image separation of 2.9 arcsec lensed by a foreground zl = 0.40 elliptical galaxy. Since ...
