Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 13773-13792 of 20469
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(Universidad de Chile, 2017)Una de las interrogantes más interesantes asociadas a la economía tiene relación con el saber como se desencadenan las crisis, burbujas y movimientos bursátiles. De la misma forma, existe una gran pregunta sin responder ...
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(MDPI, 2021)Water resources face an unparalleled confluence of pressures, with agriculture and urban growth as the most relevant human-related stressors. In this context, methodologies using a Nexus framework seem to be suitable to ...
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(Oxford University Press on behalf of the Royal Astronomical Society, 2013)If stars form in clusters but most stars belong to the field, understanding the details of the transition from the former to the latter is imperative to explain the observational properties of the field. Aging open ...
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NGC 2401: a template of the young population of the Norma-Cygnus arm in the Third Galactic Quadrant (BLACKWELL PUBLISHING, 2006-04-21)Based on a deep optical CCD [UBV(RI)(C)] photometric survey and on the Two-Micron All Sky Survey (2MASS) data, we derived the main parameters of the open cluster NGC 2401. We found that this cluster is placed at 6.3 +/- ...
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(2005)We report on VI charge-coupled device photometry of two fields centred in the region of the open clusters NGC 6404 and 6583 down to V = 22.0. So far these clusters have never been studied, and we provide for the first time ...
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(UNIV CHICAGO PRESS, 2006-06-01)We report on high-resolution echelle spectroscopy of 20 giant stars in the Galactic old open cluster NGC 6791, obtained with Hydra at the WIYN telescope. High-precision radial velocity allows us to isolate 15 bona fide ...
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(Oxford Unv Press, 2020)The Transiting Exoplanet Survey Satellite (TESS) produces a large number of single-transit event candidates, since the mission monitors most stars for only similar to 27 d. Such candidates correspond to long-period planets ...
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(Oxford University Press, 2020)We present the detection of high-energy white-light flares from pre-main-sequence stars associated with the Orion Complex, observed as part of the Next Generation Transit Survey (NGTS). With energies up to 5.2 x 10(35) erg ...
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(Oxford Unv Press, 2020)We determine rotation periods for 127 stars in the similar to 115-Myr-old Blanco 1 open cluster using similar to 200 d of photometric monitoring with the Next Generation Transit Survey. These stars span F5-M3 spectral types ...
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NGTS J214358.5−380102 – NGTS discovery of the most eccentric known eclipsing M-dwarf binary system (Oxford University Press, 2020)We present the discovery of NGTS J214358.5-380102, an eccentric M-dwarf binary discovered by the Next-Generation Transit Survey (NGTS). The system period of 7.618 d is greater than many known eclipsing M-dwarf binary ...
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(Oxford University Press, 2020)We report the discovery of a new ultrashort period (USP) transiting hot Jupiter from the Next Generation Transit Survey (NGTS). NGTS-10b has a mass and radius of 2.162(-0.107)(+0.092) M-J and 1.205(-0.083)(+0.117) R-J and ...
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(IOP Publishing, 2020)We report the discovery of NGTS-11 b (=TOI-1847b), a transiting Saturn in a 35.46 day orbit around a mid K-type star (T-eff = 5050 +/- 80 K). We initially identified the system from a single-transit event in a TESS full-frame ...
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(Oxford University Press, 2020)We report the discovery of the transiting exoplanet NGTS-12b by the Next Generation Transit Survey (NGTS). The host star, NGTS-12, is a V = 12.38 mag star with an effective temperature of T-eff = 5690 +/- 130 K. NGTS-12b ...
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(Oxford University Press, 2021)We present the discovery of NGTS-19b, a high-mass transiting brown dwarf discovered by the Next Generation Transit Survey. We investigate the system using follow-up photometry from the South African Astronomical Observatory, ...
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(Oxford University Press, 2018)We present the discovery of NGTS-1b, a hot Jupiter transiting an early M-dwarf host (T-eff,(*) = 3916 (+71)(-63) K) in a P = 2.647 d orbit discovered as part of the Next Generation Transit Survey (NGTS). The planet has a ...
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(Oxford University Press, 2019)We report the discovery of NGTS-4b, a sub-Neptune-sized planet transiting a 13th magnitude K-dwarf in a 1.34 d orbit. NGTS-4b has a mass M = 20.6 ± 3.0M⊕ and radius R = 3.18 ± 0.26 R⊕, which places it well within the ...
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(Oxford Unv Press, 2020)We report the discovery, by the next generation transit survey (NGTS), of two hot Jupiters NGTS-8b and NGTS-9b. These orbit a V = 13.68 K0V star (T-eff = 5241 +/- 50 K) with a period of 2.49970 d, and a V = 12.80 F8V star ...
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(Universidad Arturo Prat, 2015)La tríada “Libertad-Igualdad-Fraternidad” se ha entendido como un valioso legado de la Ilustración francesa, materializado por la revolución de 1789 e incluido en el proyecto de la Modernidad. No obstante, dichos conceptos ...
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(Wiley-Blackwell, 2016)Much research debates whether properties of ecological networks such as nestedness and connectance stabilise biological communities while ignoring key behavioural aspects of organisms within these networks. Here, we ...
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(Elsevier, 2012)In this contribution the synthesis and polymerization activity of the nickel complexes [NiBr2{N0-(2,6- diisopropylphenyl)-N-[1-(2,6-diisopropylphenylimine)ethyl]-N-(2,3,4,5,6-pentafluorophenyl)acetam idine}] (2), ...
