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Open AccessJournal ArticleDOI

Pre-main-sequence isochrones - II. Revising star and planet formation time-scales

TLDR
In this article, the authors used the Xgrid facilities at the University of Exeter to reduce the photometric data presented in this study, which were used to improve the results and conclusions of the paper.
Abstract
CPMB is funded by a UK Science and Technology Facilities Council (STFC) studentship. SPL is supported by an RCUK fellowship. The authors would like to thank Charles D. H. Williams for maintaining the Xgrid facilities at the University of Exeter which were used to reduce the photometric data presented in this study. The authors thank Amelia Bayo for bringing to our attention the important work on the λ Ori region published in Bayo et al. (2011) and Bayo et al. (2012) which we overlooked in our original submission. The inclusion of these works does not change the results or conclusions of the paper. The authors also thank the referee for useful comments and constructive suggestions that have greatly improved this work. This research has made use of data obtained at the Isaac Newton Telescope which is operated on the island of La Palma by the Isaac Newton Group (ING) in the Spanish Observatorio del Roque de los Muchachos of the Institutio de Astrofisica de Canarias. This research has also made use of archival data products from the Two-Micron All-Sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration (NASA) and the National Science Foundation.

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The Exoplanet Handbook

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A self-consistent, absolute isochronal age scale for young moving groups in the solar neighbourhood

TL;DR: In this paper, a self-consistent, absolute isochronal age scale for young (< 200 Myr), nearby (< 100 pc) moving groups in the solar neighbourhood based on homogeneous fitting of semi-empirical pre-main-sequence model isochrones using the tau^2 maximum-likelihood fitting statistic of Naylor & Jeffries in the M_V, V-J colour-magnitude diagram is presented.
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Separating gas-giant and ice-giant planets by halting pebble accretion

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An optical spectroscopic study of t tauri stars. i. photospheric properties

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The star formation history and accretion-disc fraction among the K-type members of the Scorpius–Centaurus OB association

TL;DR: In this article, the authors presented results of a spectroscopic survey for new K and M-type members of Scorpius-Centaurus (Sco-Cen), the nearest OB Association (~100-200 pc) using an X-ray, proper motion and color-magnitude selected sample.
References
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The relationship between infrared, optical, and ultraviolet extinction

TL;DR: In this article, the average extinction law over the 3.5 micron to 0.125 wavelength range was derived for both diffuse and dense regions of the interstellar medium. And the validity of the law over a large wavelength interval suggests that the processes which modify the sizes and compositions of grains are stochastic in nature.
Journal ArticleDOI

Formation of the Giant Planets by Concurrent Accretion of Solids and Gas

TL;DR: In this article, the authors presented a self-consistent, interactive simulation of the formation of the giant planets, in which for the first time both the gas and planetesimal accretion rates were calculated in a selfconsistent and interactive fashion.
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Secondary standard stars for absolute spectrophotometry

TL;DR: In this article, the absolute spectral energy distribution for the primary standard star Alpha Lyrae was adopted and absolute fluxes for the four very metal-deficient F type subdwarfs HD 19445, HD 84937, BD + 26.2606 deg, and BD + 17.4703 deg.
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The Dartmouth Stellar Evolution Database

TL;DR: The Dartmouth Stellar Evolution Database as mentioned in this paper is a collection of stellar evolution tracks and isochrones that spans a range of [Fe/H] from 2.5 to +0.5, [α/Fe] from 0.245 to 0.40, and initial He mass fractions from Y = 0.1 and 4 M
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