Academic literature on the topic 'Extinction curve'

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Journal articles on the topic "Extinction curve"

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Raup, David M. "Large-body impact and extinction in the Phanerozoic." Paleobiology 18, no. 1 (1992): 80–88. http://dx.doi.org/10.1017/s0094837300012227.

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The kill curve for Phanerozoic marine species is used to investigate large-body impact as a cause of species extinction. Current estimates of Phanerozoic impact rates are combined with the kill curve to produce an impact-kill curve, which predicts extinction levels from crater diameter, on the working assumption that impacts are responsible for all “pulsed” extinctions. By definition, pulsed extinction includes the approximately 60% of Phanerozoic extinctions that occurred in short-lived events having extinction rates greater than 5%. The resulting impact-kill curve is credible, thus justifyin
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Pang, Xiaoying, Anna Pasquali, and Eva K. Grebel. "The grey extinction curve in NGC 3603." Proceedings of the International Astronomical Union 10, S312 (2014): 243–44. http://dx.doi.org/10.1017/s1743921315007917.

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AbstractWe use photometry in the F220W, F250W, F330W, F435W filters from the High Resolution Channel of the Advanced Camera for Surveys and photometry in the F555W, F675W, and F814W filters from the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope to derive individual stellar reddenings and extinctions for member stars in the HD 97950 cluster in the giant H ii region NGC 3603. Within the standard deviation associated with E(λ−F555W)/E(F435W−F555W) in each filter, the cluster extinction curve at ultraviolet wavelengths tends to be greyer than the average Galactic extinction l
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Krelowski, J., and J. Papaj. "The interstellar extinction curve." Publications of the Astronomical Society of the Pacific 105 (November 1993): 1209. http://dx.doi.org/10.1086/133298.

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Nogueras-Lara, F., R. Schödel, N. Neumayer, et al. "GALACTICNUCLEUS: A high angular-resolution JHKs imaging survey of the Galactic centre." Astronomy & Astrophysics 641 (September 2020): A141. http://dx.doi.org/10.1051/0004-6361/202038606.

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Context. The characterisation of the extinction curve in the near-infrared (NIR) is fundamental to analysing the structure and stellar population of the Galactic centre (GC), whose analysis is hampered by the extreme interstellar extinction (AV ~ 30 mag) that varies on arc-second scales. Recent studies indicate that the behaviour of the extinction curve might be more complex than previously assumed, pointing towards a variation of the extinction curve as a function of wavelength. Aims. We aim to analyse the variations of the extinction index, α, with wavelength, line-of-sight, and absolute ext
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Rai, Rakesh K., and Robert S. Botet. "Amorphous carbons and extinction curve." Monthly Notices of the Royal Astronomical Society 444, no. 1 (2014): 303–12. http://dx.doi.org/10.1093/mnras/stu1401.

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Raup, David M. "A kill curve for Phanerozoic marine species." Paleobiology 17, no. 1 (1991): 37–48. http://dx.doi.org/10.1017/s0094837300010332.

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A kill curve for Phanerozoic species is developed from an analysis of the stratigraphic ranges of 17,621 genera, as compiled by Sepkoski. The kill curve shows that a typical species' risk of extinction varies greatly, with most time intervals being characterized by very low risk. The mean extinction rate of 0.25/m.y. is thus a mixture of long periods of negligible extinction and occasional pulses of much higher rate. Because the kill curve is merely a description of the fossil record, it does not speak directly to the causes of extinction. The kill curve may be useful, however, to limit choice
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Wilcove, David. "Getting Ahead of the Extinction Curve." Ecological Applications 3, no. 2 (1993): 218–20. http://dx.doi.org/10.2307/1941824.

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Hirashita, Hiroyuki, and Maria S. Murga. "Self-consistent modelling of aromatic dust species and extinction curves in galaxy evolution." Monthly Notices of the Royal Astronomical Society 492, no. 3 (2020): 3779–93. http://dx.doi.org/10.1093/mnras/stz3640.

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ABSTRACT We formulate and calculate the evolution of dust in a galaxy focusing on the distinction among various dust components – silicate, aromatic carbon, and non-aromatic carbon. We treat the galaxy as a one-zone object and adopt the evolution model of grain size distribution developed in our previous work. We further include aromatization and aliphatization (inverse reaction of aromatization). We regard small aromatic grains in a radius range of 3–50 Å as polycyclic aromatic hydrocarbons (PAHs). We also calculate extinction curves in a consistent manner with the abundances of silicate and
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Corre, D., V. Buat, S. Basa, et al. "Investigation of dust attenuation and star formation activity in galaxies hosting GRBs." Astronomy & Astrophysics 617 (September 2018): A141. http://dx.doi.org/10.1051/0004-6361/201832926.

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Context. The gamma-ray bursts hosts (GRBHs) are excellent targets to study the extinction properties of dust and its effects on the global emission of distant galaxies. The dust extinction curve is measured along the GRB afterglow line of sight and the analysis of the spectral energy distribution (SED) of the host galaxy gives access to the global dust attenuation of the stellar light. Aims. In this pilot study we gather information on dust extinction in GRBHs to compare the properties of the extinction curve to those of the dust obscuration affecting the total stellar light of the host galaxy
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Dallaston, Michael C., and Scott W. McCue. "A curve shortening flow rule for closed embedded plane curves with a prescribed rate of change in enclosed area." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, no. 2185 (2016): 20150629. http://dx.doi.org/10.1098/rspa.2015.0629.

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Motivated by a problem from fluid mechanics, we consider a generalization of the standard curve shortening flow problem for a closed embedded plane curve such that the area enclosed by the curve is forced to decrease at a prescribed rate. Using formal asymptotic and numerical techniques, we derive possible extinction shapes as the curve contracts to a point, dependent on the rate of decreasing area; we find there is a wider class of extinction shapes than for standard curve shortening, for which initially simple closed curves are always asymptotically circular. We also provide numerical eviden
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Dissertations / Theses on the topic "Extinction curve"

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Karim, L. M. "An investigation of the ultraviolet extinction curve of starlight." Thesis, Bucks New University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373595.

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Subedi, Yuba Raj. "The response of ecosystems to an increasingly variable climate." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78470.

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A wide range of ecological communities ranging from polar terrestrial to tropical marine environments are affectedby global climate change. Over the last century, atmospheric temperature has increased by an average of 0. 60 C andis expected to rise by 1.1- 6.40C over the next 100 years. This rising temperature has increased the intensity andfrequency of weather extremes due to which a large number of species are facing risk of extinction. Studies haveshown that species existing on lower latitude are more sensitive to temperature variability compared to speciesexisting on higher latitude but te
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Corre, David. "Exploring the dawn of the universe with the Sino-French SVOM mission." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0444/document.

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Cette thèse s’inscrit dans le cadre de la préparation de la mission spatiale franco­-chinoise SVOM (Space Variable Object Monitor) opérationnelle à l’horizon 2021 et qui aura pour but de détecter et caractériser les sursauts gamma. La première partie de la thèse consiste au développement d’un logiciel de simulation de COLIBRI (Catching OpticaL and Infrared BRight transIents), un télescope de suivi au sol de SVOM. Il comporte un simulateur de sursauts gamma, un exposure time calculator, un simulateur d'image, un algorithme estimant le redshift photométrique. Il a permis d'une part d’estimer les
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Books on the topic "Extinction curve"

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The curse of the labrador duck: My obsessive quest to the edge of extinction. Simon & Schuster, 2009.

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van der Velden, John, and Rob White. The Extinction Curve. Emerald Publishing Limited, 2021. http://dx.doi.org/10.1108/9781800438248.

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Patten, Steven Van. Brookwater's Curse Volume III: Extinction Agenda. Lazie Horse Publishing, 2012.

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Inc, Paizo. Pathfinder Pawns: Extinction Curse Pawn Collection. Paizo Inc., 2020.

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Book chapters on the topic "Extinction curve"

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Léger, A., L. Verstraete, L. d’Hendecourt, et al. "The PAH Hypothesis and the Extinction Curve." In Interstellar Dust. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2462-8_15.

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Joblin, C., A. Leger, P. Martin, and D. Defourneau. "Contribution of Pahs to the Interstellar Extinction Curve." In Astrochemistry of Cosmic Phenomena. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2761-5_7.

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Wegner, Walter, and Jacek Krełowski. "The Shape of the Extinction Curve of Opaque Circumstellar Matter." In The Role of Dust in the Formation of Stars. Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-540-68594-4_60.

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Hofmann, R., D. S. Davis, and H. P. Larson. "Infrared Extinction in Molecular Clouds: The Form of the Curve In Orion." In Light on Dark Matter. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4672-9_40.

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Voshchinnikov, N. V., F. J. Molster, and P. S. Thé. "Circumstellar Dust and Circumstellar Extinction Curves." In Circumstellar Matter 1994. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0147-9_38.

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"extinction curve." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_52301.

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van der Velden, John, and Rob White. "The Extinction Code within the Capitalist Growth Protocol." In The Extinction Curve. Emerald Publishing Limited, 2021. http://dx.doi.org/10.1108/978-1-80043-824-820201003.

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van der Velden, John, and Rob White. "At Dante's Gate." In The Extinction Curve. Emerald Publishing Limited, 2021. http://dx.doi.org/10.1108/978-1-80043-824-820201001.

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van der Velden, John, and Rob White. "Beyond the Holocene Edge." In The Extinction Curve. Emerald Publishing Limited, 2021. http://dx.doi.org/10.1108/978-1-80043-824-820201002.

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"Prelims." In The Extinction Curve. Emerald Publishing Limited, 2021. http://dx.doi.org/10.1108/978-1-80043-824-820201009.

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Conference papers on the topic "Extinction curve"

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Schady, P., M. J. Page, S. R. Oates, et al. "The GRB Mean Extinction Curve." In PROBING STELLAR POPULATIONS OUT TO THE DISTANT UNIVERSE: CEFALU 2008, Proceedings of the International Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3141602.

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HERNANDEZ-MARTINEZ, L., and D. MAYYA. "EXTINCTION CURVE TOWARD THE NUCLEAR REGION OF M82." In Proceedings of the Guillermo Haro Conference 2003. WORLD SCIENTIFIC, 2004. http://dx.doi.org/10.1142/9789812702432_0048.

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Guillois, O., R. Papoular, and I. Nenner. "Coal model for the UV-visible interstellar extinction curve." In The 50th international meeting of physical chemistry: Molecules and grains in space. AIP, 1994. http://dx.doi.org/10.1063/1.46639.

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Lee, Wei, and Thomas J. Wdowiak. "Ionized polycyclic aromatic hydrocarbon molecules and the interstellar extinction curve." In The 50th international meeting of physical chemistry: Molecules and grains in space. AIP, 1994. http://dx.doi.org/10.1063/1.46592.

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Kishi, Toshiki, Munehiko Nagatani, Shigeru Kanazawa, et al. "A 56-Gb/s PAM4 InP HBT Driver IC Compensating for Nonlinearity of Extinction Curve of EAM." In 2015 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS). IEEE, 2015. http://dx.doi.org/10.1109/csics.2015.7314470.

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Mosbach, Thomas, Victor Burger, and Barani Gunasekaran. "Fuel Influence on Targeted Gas Turbine Combustion Properties: Part I — Detailed Diagnostics." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25075.

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The threshold combustion performance of different fuel formulations under simulated altitude relight conditions were investigated in the altitude relight test facility located at the Rolls-Royce plc. Strategic Research Centre in Derby, UK. The combustor employed was a twin-sector representation of an RQL gas turbine combustor. Eight fuels including conventional crude-derived Jet A-1 kerosene, synthetic paraffinic kerosenes (SPKs), linear paraffinic solvents, aromatic solvents and pure compounds were tested. The combustor was operated at sub-atmospheric air pressure of 41 kPa and air temperatur
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Burger, Victor, Andy Yates, and Carl Viljoen. "Influence of Fuel Physical Properties and Reaction Rate on Threshold Heterogeneous Gas Turbine Combustion." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68153.

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The paper presents the findings from a study of the lean blowout (LBO) behaviour of sixteen fuel blends in a heterogeneous laboratory combustor. The LBO results were correlated with fuel blend properties that included the D86 distillation profile, density, viscosity, flash point and ignition delay as represented by derived cetane number (DCN). A spherical bomb was employed to measure laminar flame speed and Markstein length based on pressure measurements. The experiments were conducted with two different starting temperatures and over a range of air fuel ratios from rich to lean. The atomisati
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Uranakar, Harshavardhana A., Swetaprovo Chaudhuri, and K. N. Lakshmisha. "Turbulence-Transport-Chemistry Interaction in Statistically Planar Premixed Flames and Ignition Kernels in Near Isotropic Turbulence." In ASME 2014 Gas Turbine India Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gtindia2014-8340.

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Turbulence-transport-chemistry interaction plays a crucial role on the flame surface geometry, local and global reaction-rates, and therefore, on the propagation and extinction characteristics of intensely turbulent, premixed flames encountered in LPP gas-turbine combustors. The aim of the present work is to understand these interaction effects on the flame surface annihilation and extinction of lean premixed flames, interacting with near isotropic turbulence. As an example case, lean premixed H2-air mixture is considered so as to enable inclusion of detailed chemistry effects in Direct Numeri
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Dotta, Fernando, Eduardo Hippert, and Claudio Ruggieri. "A Failure Assessment Procedure for Cracked Pipelines Incorporating a Damage Criterion for Crack Growth." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51031.

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This study extends a micromechanics approach based upon the computational cell methodology to model ductile crack extension of longitudinal crack-like defects in a high strength pipeline steel. Laboratory testing of an API 5L X60 AND x70 pipeline steel at room temperature using standard, deep crack C(T) specimens provide the data needed to measure the crack growth resistance curve for the material. In the computational cell model, ductile crack extension occurs through void growth and coalescence (by cell extinction) within a thin layer of material ahead of crack tip. A simple scheme to calibr
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Gordon, Karl D., Stefan Cartledge, Geoffrey Clayton, et al. "FUSE Far Ultraviolet Dust Extinction Curves." In FUTURE DIRECTIONS IN ULTRAVIOLET SPECTROSCOPY: A Conference Inspired by the Accomplishments of the Far Ultraviolet Spectroscopic Explorer Mission. AIP, 2009. http://dx.doi.org/10.1063/1.3154027.

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