Avogadro's number, moles, and molecules

McCullough, Thomas

doi:10.1021/ed067p783

Cited by 15 publications

(14 citation statements)

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“…The ground-based surveys for transiting exoplanets have been a major contributor to the total yield of known exoplanets. The majority of ground-based transiting exoplanet detections have been provided by the shallow wide-field surveys such as the Transatlantic Exoplanet Survey (TrES) (Alonso et al 2004), the XO project (McCullough et al 2005), the Hungarian Automated Telescope Network (HATNet) (Bakos et al 2004), SuperWASP (Pollacco et al 2006), and Kilodegree Extremely Little Telescope (KELT) (Pepper et al 2007).…”

Section: Ground-based Surveysmentioning

confidence: 99%

The NASA Exoplanet Archive: Data and Tools for Exoplanet Research

Akeson¹,

Chen²,

Ciardi³

et al. 2013

Publications of the Astronomical Society of the Pacific

719

441

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We describe the contents and functionality of the NASA Exoplanet Archive, a database and tool set funded by NASA to support astronomers in the exoplanet community. The current content of the database includes interactive tables containing properties of all published exoplanets, Kepler planet candidates, threshold-crossing events, data validation reports and target stellar parameters, light curves from the Kepler and CoRoT missions and from several ground-based surveys, and spectra and radial velocity measurements from the literature. Tools provided to work with these data include a transit ephemeris predictor, both for single planets and for observing locations, light curve viewing and normalization utilities, and a periodogram and phased light curve service. The archive can be accessed at http://exoplanetarchive.ipac.caltech.edu.Comment: Accepted for publication in the Publications of the Astronomical Society of the Pacific, 4 figure

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Section: Ground-based Surveysmentioning

confidence: 99%

The NASA Exoplanet Archive: Data and Tools for Exoplanet Research

Akeson¹,

Chen²,

Ciardi³

et al. 2013

Publications of the Astronomical Society of the Pacific

719

441

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“…The transiting extrasolar planet (TEP) population turns out to be the best atout in the hands of exoplanetary scientists. Thanks to the early ground-based systematic surveys (e.g., Bakos et al 2004;Alonso et al 2004;McCullough et al 2005;Pollacco et al 2006;Pepper et al 2007;Alsubai et al 2013;Bakos et al 2013) and then to those from the space (CoRoT: Barge et al 2008, Kepler : Borucki et al 2011), more than 1290 transiting planetary systems have now been found. The possibility to easily derive most of their physical and orbital parameters, and to investigate even the composition of their atmosphere, make the TEPs the most suitable targets to detect and study in detail.…”

Section: Introductionmentioning

confidence: 99%

Kepler-539: A young extrasolar system with two giant planets on wide orbits and in gravitational interaction

Mancini

Lillo-Box

Southworth

et al. 2016

A&A

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We confirm the planetary nature of Kepler-539 b (aka Kepler object of interest K00372.01), a giant transiting exoplanet orbiting a solar-analogue G2 V star. The mass of Kepler-539 b was accurately derived thanks to a series of precise radial velocity measurements obtained with the CAFE spectrograph mounted on the CAHA 2.2-m telescope. A simultaneous fit of the radial-velocity data and Kepler photometry revealed that Kepler-539 b is a dense Jupiter-like planet with a mass of M p = 0.97 ± 0.29 M Jup and a radius of R p = 0.747 ± 0.018 R Jup , making a complete circular revolution around its parent star in 125.6 days. The semi-major axis of the orbit is roughly 0.5 au, implying that the planet is at ≈0.45 au from the habitable zone. By analysing the mid-transit times of the 12 transit events of Kepler-539 b recorded by the Kepler spacecraft, we found a clear modulated transit time variation (TTV), which is attributable to the presence of a planet c in a wider orbit. The few timings available do not allow us to precisely estimate the properties of Kepler-539 c and our analysis suggests that it has a mass between 1.2 and 3.6 M Jup , revolving on a very eccentric orbit (0.4 < e ≤ 0.6) with a period larger than 1000 days. The high eccentricity of planet c is the probable cause of the TTV modulation of planet b. The analysis of the CAFE spectra revealed a relatively high photospheric lithium content, A(Li) = 2.48 ± 0.12 dex, which, together with both a gyrochronological and isochronal analysis, suggests that the parent star is relatively young.

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“…In order to further our understanding of gas giant atmospheres it is necessary to build a larger sample of systems with measured transmission spectra. Hundreds of transiting exoplanets, mostly hot gas giants, have been discovered by ground based surveys such as HATNet (Bakos et al 2004), WASP (Pollacco et al 2006), KELT (Pepper et al 2007), XO (McCullough et al 2005), TRES (Alonso et al 2004) and HATSouth (Bakos et al 2013), with magnitudes within reach of the larger collecting areas afforded by ground based telescopes but often too faint for HST 14 .…”

Section: Introductionmentioning

confidence: 99%

A GROUND-BASED OPTICAL TRANSMISSION SPECTRUM OF WASP-6b

Jordán

Espinoza

Rabus

et al. 2013

ApJ

112

108

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We present a ground based optical transmission spectrum of the inflated sub-Jupiter mass planet WASP-6b. The spectrum was measured in twenty spectral channels from 480 nm to 860nm using a series of 91 spectra over a complete transit event. The observations were carried out using multi-object differential spectrophotometry with the IMACS spectrograph on the Baade telescope at Las Campanas Observatory. We model systematic effects on the observed light curves using principal component analysis on the comparison stars, and allow for the presence of short and long memory correlation structure in our Monte Carlo Markov Chain analysis of the transit light curves for WASP-6. The measured transmission spectrum presents a general trend of decreasing apparent planetary size with wavelength and lacks evidence for broad spectral features of Na and K predicted by clear atmosphere models. The spectrum is consistent with that expected for scattering that is more efficient in the blue, as could be caused by hazes or condensates in the atmosphere of WASP-6b. WASP-6b therefore appears to be yet another massive exoplanet with evidence for a mostly featureless transmission spectrum, underscoring the importance that hazes and condensates can have in determining the transmission spectra of exoplanets.

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Avogadro's number, moles, and molecules

Abstract: A simple diagram that relates Avogadro's number, moles, and number of atoms / molecules.

Cited by 15 publications

References 0 publications

The NASA Exoplanet Archive: Data and Tools for Exoplanet Research

The NASA Exoplanet Archive: Data and Tools for Exoplanet Research

Kepler-539: A young extrasolar system with two giant planets on wide orbits and in gravitational interaction

A GROUND-BASED OPTICAL TRANSMISSION SPECTRUM OF WASP-6b

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