Navegação Ciências Exatas e da Terra por Título
Resultados 4557-4576 de 5972
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SDSS-IV MaNGA : star formation cessation in low-redshift galaxies. I. Dependence on stellar mass and structural properties
(2018) [Artigo de periódico]We investigate radial gradients in the recent star formation history (SFH) of 1917 galaxies with 0.01 < z < 0.14 from the Mapping Nearby Galaxies at Apache Point Observatory project. For each galaxy, we obtain twodimensional ... -
SDSS IV MaNGA : star-formation driven biconical outflows in face-on galaxies
(2022) [Artigo de periódico]We find 132 face-on and low inclination galaxies with central star formation driven biconical gas outflows (FSFB) in the SDSS MaNGA (Mapping Nearby Galaxies at APO) survey. The FSFB galaxies show either double peaked or ... -
SDSS-IV MaNGA : star-formation-driven biconical outflows in the local universe
(2019) [Artigo de periódico]We present a sample of 48 nearby galaxies with central, biconical outflows identified by the Mapping Nearby Galaxies at APO survey. All considered galaxies have star-formation-driven biconical (SFB) central outflows, with ... -
SDSS-IV MaNGA : stellar population gradients as a function of galaxy environment
(2017) [Artigo de periódico]We study the internal radial gradients of stellar population properties within 1.5 Re and analyse the impact of galaxy environment.We use a representative sample of 721 galaxies with masses ranging between 109M and 1011.5M ... -
SDSS-IV MaNGA : stellar population gradients within barred galaxies
(2019) [Artigo de periódico]Bars in galaxies are thought to stimulate both inflow of material and radial mixing along them. Observational evidence for this mixing has been inconclusive so far, however, limiting the evaluation of the impact of bars ... -
SDSS-IV MaNGA : the impact of diffuse ionized gas on emission-line ratios, interpretation of diagnostic diagrams and gas metallicity measurements
(2017) [Artigo de periódico]Diffuse ionized gas (DIG) is prevalent in star-forming galaxies. Using a sample of 365 nearly face-on star-forming galaxies observed byMapping Nearby Galaxies at APO, we demonstrate how DIG in star-forming galaxies impacts ... -
SDSS J124043.01+671034.68 : the partially burned remnant of a low-mass white dwarf that underwent thermonuclear ignition?
(2020) [Artigo de periódico]The white dwarf SDSS J124043.01+671034.68 (SDSS J1240+6710) was previously found to have an oxygen-dominated atmosphere with significant traces of neon, magnesium, and silicon. A possible origin via a violent late thermal ... -
Searches for additional Higgs bosons and for vector leptoquarks in τ τ final states in proton-proton collisions at √s = 13 TeV
(2023) [Artigo de periódico]Three searches are presented for signatures of physics beyond the standard model (SM) in τ τ final states in proton-proton collisions at the LHC, using a data sample collected with the CMS detector at √ s = 13 TeV, ... -
Searches for pair production of charginos and top squarks in final states with two oppositely charged leptons in proton-proton collisions at √s = 13 TeV
(2018) [Artigo de periódico]A search for pair production of supersymmetric particles in events with two oppositely charged leptons (electrons or muons) and missing transverse momentum is reported. The data sample corresponds to an integrated luminosity ... -
Searches for transverse momentum dependent ow vector uctuations in Pb-Pb and p-Pb collisions at the LHC
(2017) [Artigo de periódico]The measurement of azimuthal correlations of charged particles is presented for Pb{Pb collisions at p sNN = 2.76TeV and p{Pb collisions at sNN = 5.02TeV with the ALICE detector at the CERN Large Hadron Collider. These ... -
Search for a charged Higgs boson decaying into a heavy neutral Higgs boson and a W boson in proton-proton collisions at √s = 13 TeV
(2023) [Artigo de periódico]A search for a charged Higgs boson H± decaying into a heavy neutral Higgs boson H and a W boson is presented. The analysis targets the H decay into a pair of tau leptons with at least one of them decaying hadronically and ... -
Search for a charged Higgs boson decaying to charm and bottom quarks in proton-proton collisions at √s = 8 TeV
(2018) [Artigo de periódico]A search for charged Higgs boson decaying to a charm and a bottom quark (H+ ! cb) is performed using 19.7 fb1 of pp collision data at p s = 8TeV. The production mechanism investigated in this search is tt pair production ... -
Search for a common baryon source in high-multiplicity pp collisions at the LHC
(2020) [Artigo de periódico]We report on the measurement of the size of the particle-emitting source from two-baryon correlations with ALICE in high-multiplicity pp collisions at √s = 13 TeV. The source radius is studied with low relative momentum ... -
Search for additional neutral MSSM Higgs bosons in the ττ final state in proton-proton collisions at √s = 13TeV
(2018) [Artigo de periódico]A search is presented for additional neutral Higgs bosons in the nal state in proton-proton collisions at the LHC. The search is performed in the context of the minimal supersymmetric extension of the standard model (MSSM), ... -
Search for a heavy Higgs boson decaying into two lighter Higgs bosons in the ττbb final state at 13 TeV
(2021) [Artigo de periódico]A search for a heavy Higgs boson H decaying into the observed Higgs boson h with a mass of 125 GeV and another Higgs boson hS is presented. The h and hS bosons are required to decay into a pair of tau leptons and a pair ... -
Search for a heavy Higgs boson decaying to a pair of W bosons in proton-proton collisions at √s = 13 TeV
(2020) [Artigo de periódico]A search for a heavy Higgs boson in the mass range from 0.2 to 3.0TeV, decaying to a pair of W bosons, is presented. The analysis is based on proton-proton collisions at √s = 13TeV recorded by the CMS experiment at the LHC ... -
Search for a heavy pseudoscalar boson decaying to a Z and a Higgs boson at s√=13TeV
(2019) [Artigo de periódico]A search is presented for a heavy pseudoscalar boson A decaying to a Z boson and a Higgs boson with mass of 125GeV. In the final state considered, the Higgs boson decays to a bottom quark and antiquark, and the Z boson ... -
Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at √s = 13 TeV
(2020) [Artigo de periódico]A search is performed for a pseudoscalar Higgs boson, A, decaying into a 125GeV Higgs boson h and a Z boson. The h boson is specifically targeted in its decay into a pair of tau leptons, while the Z boson decays into a ... -
Search for a heavy resonance decaying into a Z boson and a vector boson in the vvqq final state
(2018) [Artigo de periódico]A search is presented for a heavy resonance decaying into either a pair of Z bosons or a Z boson and a W boson (ZZ or WZ), with a Z boson decaying into a pair of neutrinos and the other boson decaying hadronically into two ... -
Search for a heavy resonance decaying into a Z boson and a Z or W boson in 2l2q nal states at √s = 13TeV
(2018) [Artigo de periódico]A search has been performed for heavy resonances decaying to ZZ or ZW in 2`2q nal states, with two charged leptons (` = e; ) produced by the decay of a Z boson, and two quarks produced by the decay of a W or Z boson. The ...