Navegação Ciências Exatas e da Terra por Título
Resultados 2125-2144 de 5930
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Gemini near-infrared integral field spectroscopy of the narrow-line region of ESO428-G14 : kinematics, escitation and the role of the radio jet
(2006) [Artigo de periódico]We present two-dimensional (2D) gas kinematics and excitation of the inner 300 pc of the Seyfert galaxy ESO 428−G14 at a sampling of 14 pc², from near-infrared spectroscopic observations at R≈6000 obtained with the Integral ... -
Gemini NIFS survey of feeding and feedback in nearby active galaxies III. Ionized versus warm molecular gas masses and distributions
(2019) [Artigo de periódico]We have used the Gemini Near-Infrared Integral Field Spectrograph in the J and K bands to map the distribution, excitation, and kinematics of the ionized H ii and warm molecular gas H2, in the inner few 100 pc of six nearby ... -
Gemini NIFS survey of feeding and feedback in nearby active galaxies : IV. Excitation
(2021) [Artigo de periódico]The near-infrared spectra of active galactic nuclei (AGN) present emission lines of different atomic and molecular species. The mechanisms involved in the origin of these emission lines in AGN are still not fully understood. ... -
Gemini NIFS survey of feeding and feedback in nearby active galaxies V. Molecular and ionized gas kinematics
(2022) [Artigo de periódico]We study the gas distribution and kinematics of the inner kpc of six moderately luminous (43.43 ≤ log Lbol ≤ 44.83) nearby (0.004 ≤ z ≤ 0.014) Seyfert galaxies observed with the Near-infrared Integral Field Spectrograph ... -
Gemini NIFS survey of feeding and feedback processes in nearby active galaxies : II. The sample and surface mass density profilesthe hidden monster and its outflow
(2018) [Artigo de periódico]We present and characterize a sample of 20 nearby Seyfert galaxies selected for having BAT 14–195 keV luminosities LX ≥ 1041.5 erg s−1, redshift z ≤ 0.015, being accessible for observations with the Gemini Near-Infrared ... -
Gemini NIFS survey of feeding and feedback processes in nearby active galaxies : I. Stellar kinematics
(2017) [Artigo de periódico]We use the Gemini Near-Infrared Integral Field Spectrograph (NIFS) to map the stellar kinematics of the inner few hundred parsecs of a sample of 16 nearby Seyfert galaxies, at a spatial resolution of tens of parsecs and ... -
Gemini NIFS survey of feeding and feedback processes in nearby active galaxies : VI. Stellar populations
(2022) [Artigo de periódico]We use Gemini Near-Infrared Integral Field Spectrograph (NIFS) adaptive optics assisted data cubes to map the stellar population of the inner few hundred parsec of a sample of 18 nearby Seyfert galaxies. The near-infrared ... -
A Gemini–NIFS view of the merger remnant NGC 34
(2021) [Artigo de periódico]The merger remnant NGC 34 is a local luminous infrared galaxy (LIRG) hosting a nuclear starburst and a hard X-ray source associated with a putative, obscured Seyfert 2 nucleus. In this work, we use adaptive optics assisted ... -
Gemini/Phoenix H-band analysis of the globular cluster AL 3
(2021) [Artigo de periódico]The globular cluster AL 3 is old and located in the inner bulge. Three individual stars were observed with the Phoenix spectrograph at the Gemini South telescope. The wavelength region contains prominent lines of CN, OH, ... -
Gemini-Phoenix infrared high-resolution abundance analysis of five giants in the bulge globular cluster NGC 6553
(2003) [Artigo de periódico]A detailed abundance analysis of 5 giants of the metal-rich bulge globular cluster NGC 6553 was carried out using high resolution infrared spectra in the H band, obtained at the Gemini-South 8m telescope. JK photometry ... -
Gemini spectra of 12 000 k white dwarf stars
(2006) [Artigo de periódico]We report signal-to-noise ratio (S/N) - ~100 optical spectra for four DA white dwarf stars acquired with the GMOS spectrograph of the 8-m Gemini north telescope. These stars have 18 < g < 19 and are around Teff ~ 12 000 ... -
Gender, race and parenthood impact academic productivity during the COVID-19 pandemic : from survey to action
(2021) [Artigo de periódico]The coronavirus disease 2019 (COVID-19) pandemic is altering dynamics in academia, and people juggling remote work and domestic demands – including childcare – have felt impacts on their productivity. Female authors have ... -
General asymptotic supnorm estimates for solutions of one-dimensional advection-diffusion equations in heterogeneous media
(2014) [Artigo de periódico]We derive general bounds for the large time size of supnorm values ‖𝑢(⋅, 𝑡)‖𝐿∞(R) of solutions to one-dimensional advectiondiffusion equations 𝑢𝑡 + (𝑏(𝑥, 𝑡)𝑢)𝑥 = 𝑢𝑥𝑥, 𝑥 ∈ R, 𝑡 > 0 with initial data 𝑢(⋅, 0) ... -
General balance functions of identified charged hadron pairs of (π, K, p) in Pb–Pb collisions at √sNN = 2.76 TeV
(2022) [Artigo de periódico]First measurements of balance functions (BFs) of all combinations of identified charged hadron (π,K, p) pairs in Pb–Pb collisions at √sNN = 2.76 TeV recorded by the ALICE detector are presented. The BF measurements are ... -
A general catalogue of extended objects in the Magellanic System
(2008) [Artigo de periódico]We update the Small Magellanic Cloud (SMC), Bridge and Large Magellanic Cloud (LMC) catalogues of extended objects that were constructed by members of our group from 1995 to 2000. In addition to the rich subsequent literature ... -
Generalized Abèles relations for an anisotropic thin film with an arbitrary dielectric tensor : comments
(1998) [Artigo de periódico]The Cojocaru generalization of the 2 3 2 extended Jones matrix method, placed in a wider context of previous approaches to anisotropic optical thin films, is analyzed from a complementary perspective. This, contrary to ... -
Generalized Metropolis dynamics with a generalized master equation : an approach for time-independent and time-dependent Monte Carlo simulations of generalized spin systems
(2012) [Artigo de periódico]The extension of Boltzmann-Gibbs thermostatistics, proposed by Tsallis, introduces an additional parameter q to the inverse temperature β. Here, we show that a previously introduced generalized Metropolis dynamics to evolve ... -
Generation and evaluation of a genome-scale metabolic network model of synechococcus elongatus PCC7942
(2014) [Artigo de periódico]The reconstruction of genome-scale metabolic models and their applications represent a great advantage of systems biology. Through their use as metabolic flux simulation models, production of industrially-interesting ... -
Generation of harmonic Langmuir mode by beam-plasma instability
(2002) [Artigo de periódico]In this article, numerical solutions of the generalized weak turbulence equation [P. H. Yoon, Phys. Plasmas 7, 4858 (2000)] are carried out. In the generalized weak turbulence theory, the generation of the 2vpe-harmonic ... -
Generation of spin currents by a temperature gradient in a two-terminal device
(2021) [Artigo de periódico]Theoretical and experimental studies of the interaction between spins and temperature are vital for the development of spin caloritronics, as they dictate the design of future devices. In this work, we propose a two-terminal ...
