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98 results for “exoplanets”
Processed data file for article "Implications of the iron oxide phase transition on the interiors of rocky exoplanets"
Open the record for dataset details and reuse information.
Venusian Habitable Climate Scenarios: Modeling Venus through time and applications to slowly rotating Venus-Like Exoplanets
<p>All files in these zip files are related to the paper titled "Venusian Habitable Climate Scenarios: Modeling Venus through time and applications to slowly rotating Venus-Like Exoplanets" by M.J. Way & Anthony D. Del Genio in The Journal of Geophysical Research: Planets</p> <p>https://www.essoar.org/doi/10.1002/essoar.10501118.2</p> <p>See Table 1 for a list of the 45 Experiments. The files used to generate the data presented in Table 2 are included herein.</p> <p>RUNDECKS.zip: ROCKE-3D model configuration files (179KB)</p> <p>INPUT_FILES.zip: Boundary conditions files required for a given rundeck (194MB)</p> <p>ACC.zip: Raw NetCDF model output files (733MB)</p> <p>AIJ.zip: ACC Processed aij NetCDF files (118MB)</p>
Dataset for: "The ARCiS framework for Exoplanet Atmospheres: Modelling Philosophy and Retrieval"
<p>This is the data package accompanying the publication: The ARCiS framework for Exoplanet Atmospheres: Modelling Philosophy and Retrieval</p> <p>Accepted for publication in A&A</p>
Detecting periodicities in time-series (for exoplanet detection)
<p>Recording of the presentation given at the Summer School</p>
Exoplanet imaging data challenge
<p>Datasets for the Exoplanet imaging data challenge (<a href="https://exoplanet-imaging-challenge.github.io/">https://exoplanet-imaging-challenge.github.io</a>). </p>
Reproduction package for the paper: "Cold day-side winds shape large leading streams in evaporating exoplanet atmospheres"
<p>Supplementary material for the paper "Cold day-side winds shape large leading streams in evaporating exoplanet atmospheres" by Nail et al. (2024). <br><br>We provide the results of the 3D hydrodynamic simulation with Athena++, with key files including the input file and a snapshot from the simulation taken after 8 orbits for all models discussed in the paper. The post-processing is performed using a radiative transfer code found in the "post-process_HAT67" folder. This code, described by MacLeod & Oklopcic (2022), produces synthetic spectra from the simulation snapshots and has been enhanced for precise calculations in high-density regions. Additionally, a Jupyter notebook demonstrates how to analyze the data and create the figures presented in the paper.</p> <p>Note: In the new version of the paper, we use "dtaui = d['nhe3'] * d['dr'] * csi * Voigt(nu_cell, da1, natural_gamma)" in the Figures.ipynb notebook in cell 42. </p>
Stability of Hydrides in Sub-Neptune Exoplanets with Thick Hydrogen-Rich Atmospheres
<p>Data sets for the submitted manuscript</p>
Products and Models for "A JWST transmission spectrum of the nearby Earth-sized exoplanet LHS 475 b"
<p>OVERVIEW: The critical first step in the search for life on exoplanets over the next decade is to determine whether rocky planets transiting small M-dwarf stars possess atmospheres and, if so, what processes sculpt them over time. Because of its broad wavelength coverage and improved resolution compared to previous instruments, spectroscopy with JWST offers a new capability to detect and characterize the atmospheres of Earth-sized, M-dwarf planets. Here we use JWST to independently validate the discovery of LHS 475 b, a warm (586 K), 0.99 Earth-radius exoplanet, interior to the habitable zone, and report a precise 2.9 − 5.3 μm transmission spectrum using the NIRSpec G395H instrument. With two transit observations, we rule out primordial hydrogen-dominated and cloudless pure methane atmospheres. Thus far, the featureless transmission spectrum remains consistent with a planet that has a high-altitude cloud deck (similar to Venus), a tenuous atmosphere (similar to Mars), or no appreciable atmosphere at all (akin to Mercury). There are no signs of stellar contamination due to spots or faculae. Our observations demonstrate that JWST has the requisite sensitivity to constrain the secondary atmospheres of terrestrial exoplanets with absorption features < 50 ppm, and that our current atmospheric constraints speak to the nature of the planet itself, rather than instrumental limits.</p>
Exoplanet Direct Imaging Project
"We propose to develop high contrast coronagraphic techniques for segmented telescopes, providing an integrated solution for wavefront control and starlight suppression on complex aperture geometries. Developing this technology will enable direct imaging of exoplanets from space with significant cost savings relative to monolithic mirrors. Searching for nearby habitable worlds with direct imaging is one of the top scientific priorities established by the Astro2010 Decadal Survey. Achieving this ambitious goal will require 1010 contrast on a telescope large enough to provide angular resolution and sensitivity to planets around a significant sample of nearby stars. Lightweight segmented mirror technology allows larger diameter optics to fit in any given launch vehicle as compared to monolithic mirrors, making it a compelling option for future space telescopes. But until recently, it was believed that internal coronagraphs were incapable of yielding very high contrast on segmented telescopes. Recent developments now show that there is in fact a clear path to high contrast coronagraphy on segmented apertures. The key advances are (1) the demonstration of precision wavefront shaping with amplitude control using multiple deformable mirrors, and (2) improvements in coronagraph mask design that dramatically reduce transmission of segment-gap-scattered light. We propose a plan that will mature these technologies for coronagraphy with on-axis segmented mirror telescopes to TRL 4 by mid-decade with the following elements: 1. Numerical studies for coronagraph optimization and wavefront shaping to yield high-contrast point spread function dark zones. 2. Precision segment phasing concepts and algorithms that will improve the state of the art by one order of magnitude, and will be applicable to any segmented telescope. 3. A system-level demonstration integrating segment precision phasing, wavefront control and shaping, together with advanced coronagraphy. Success
CoRoT Stellar Targets for Exoplanet Detection Observation Log
CoRoT was a space astronomy mission devoted to the study of the variability with time of stars' brightness, with an extremely high accuracy (100 times better than from the ground), for very long durations (up to 150 days) and with a very high duty cycle (more than 90%). The mission was led by CNES in association with four French laboratories, and 7 participating countries and agencies (Austria, Belgium, Brazil, Germany, Spain, and the ESA Science Programme). The satellite is composed of a PROTEUS platform (the 3rd in the series), and a unique instrument: a stellar photometer. It was launched on December 27th, 2006 on a Soyuz Rocket, from Baikonour. The mission has lasted almost 6 years (the nominal 3 years duration and a 3 years extension) and has observed more than 160,000 stars. It suddenly stopped sending data on November 2nd, 2012. CoRoT performed Ultra High Precision Photometry of Stars to detect and characterize the variability of their luminosity with two main objectives: (i) the variability of the object itself: oscillations, rotation, magnetic activity, etc.; (ii) variability due to external causes such as bodies in orbit around the star: planets and companion stars. The original scientific objectives were focused on the study of stellar pulsations (asteroseismology) to probe the internal structure of stars, and the detection of small exoplanets through their transit in front of their host star, and the measurement of their sizes. This lead to the introduction of two modes of observations, working simultaneously: - The bright star mode dedicated to very precise seismology of a small sample (171) of bright and nearby stars (presented in the file named "Bright_star.dat" in the CDS version at <a href="https://cdsarc.cds.unistra.fr/ftp/cats/B/corot/">https://cdsarc.cds.unistra.fr/ftp/cats/B/corot/</a>): these data are not included in this HEASARC table, notice; - The faint star mode, observing a very large number of stars at the same time, to detect transits, which are rare events, as they imply the alignment of the star, the planet and the observer (these data are presented in the file named "Faint_star.dat" in the CDS version at <a href="https://cdsarc.cds.unistra.fr/ftp/cats/B/corot/">https://cdsarc.cds.unistra.fr/ftp/cats/B/corot/</a>): this HEASARC table is based on this sample. The large amount of data gathered in this mode mode turned out to be extremely fruitful for many topics of stellar physics. Due to project constraints, two regions of the sky were accessible (circles of 10 degrees centered on the equator around Right Ascensions of 06<sup>h</sup> 50<sup>m</sup> and 18<sup>h</sup> 50<sup>m</sup>). They are called the CoRoT 'eyes': the first one is called the "anticenter" eye, whereas the second one is called the "center eye". Each pointing covers 1.4 x 2.8 square degrees. The CoRoT project is still processing the data, aiming at removing instrumental artifacts and defects. Therefore the format and content of the catalog is still somewhat evolving. More details on the data can be found in the file <a href="http://idoc-corotn2-public.ias.u-psud.fr/jsp/doc/CoRoT_N2_versions_30sept2014.pdf">http://idoc-corotn2-public.ias.u-psud.fr/jsp/doc/CoRoT_N2_versions_30sept2014.pdf</a>. More details on the CoRoT N2 data may be found in the documentation file <a href="http://idoc-corotn2-public.ias.u-psud.fr/jsp/doc/DescriptionN2v1.5.pdf">http://idoc-corotn2-public.ias.u-psud.fr/jsp/doc/DescriptionN2v1.5.pdf</a>. This HEASARC table contains information on stars observed by CoRoT in its exoplanet detection program. A few percent of these stars have 2 entries since they were observed in different windows (as specified by the corot_window_id parameter) in a subsequent observing run to the initial run in which they were observed. Each entry in this table corresponds to the unique specification of target and corot_window_id, each with a link to its associated N2 data products. The original names of the parameters in this table, as given in the CoRoT mission documentation, are given in square brackets at the end of the parameter descriptions listed below. This table was created by the HEASARC in May 2012 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/B/corot">CDS Catalog B/corot</a> file Faint_star.dat. The HEASARC routinely updates this table after updates are made to the CDS version of this catalog. This is a service provided by NASA HEASARC .
Exoplanet Orbit Database
The Exoplanet Orbit Database is a database of well-determined orbital parameters of exoplanets, and their host stars' properties. This database comprises spectroscopic orbital elements measured for planets orbiting their host stars from radial velocity and transit measurements as reported in the literature. The authors have also compiled fundamental transit parameters, stellar parameters, and the method used for the planets discovery. This Exoplanet Orbit Database includes all planets with robust, well measured orbital parameters reported in peer-reviewed articles. In addition to this HEASARC representation, the database is available in a searchable, filterable, and sortable form online through the Exoplanets Data Explorer table at <a href="http://exoplanets.org">http://exoplanets.org</a>, and the data can be plotted and explored through the Exoplanet Data Explorer plotter which is available at that web site. In their paper, the authors use the Data Explorer to generate publication-ready plots, giving three examples of the signatures of exoplanet migration and dynamical evolution: They illustrate the character of the apparent correlation between mass and period in exoplanet orbits, the different selection biases between radial velocity and transit surveys, and that the multi-planet systems show a distinct semi-major-axis distribution from apparently singleton systems. This table was first created by the HEASARC in August 2012 based on a machine-readable version of the Exoplanet Orbit Database which was obtained from the authors' web site (<a href="http://exoplanets.org">http://exoplanets.org</a>), file exoplanets.csv. It is updated usually within a day of whenever the source file is updated. This is a service provided by NASA HEASARC .
EPOXI EXOPLANET TRANSIT OBS - HRIV RAW IMAGES V1.0
This data set set contains raw images of eight known transiting extrasolar planetary systems (hot Jupiters) acquired by the Deep Impact High Resolution Visible CCD during the EPOCh phase of the EPOXI mission. From 22 January through 31 August 2008 the HRIV CCD collected over 172,000 usable, photometric-quality visible light images of these transiting planet systems: HAT-P-4, HAT-P-7, GJ 436, TrES-2, TrES-3, XO-2, XO-3, and WASP-3. Time series of continuous 50-second integrations were used with the clear filter (#6) to observe each system for about three weeks, typically covering five or more transits as well as secondary eclipses. An exception was XO-3 which was only observed briefly due to the spacecraft entering safe mode. The transiting planet systems were observed in the integrated light of the planet and star; no spatially resolved image of the planet was possible.
Exoplanet Exploration Program
<p> Strategic technology development to support future ExEP projects.</p>
EPOXI EXOPLANET TRANSIT OBS - HRIV STELLAR PHOTOMETRY V1.0
This data set contains aperture photometry of known transiting planet systems GJ 436, HAT-P-4, HAT-P-7, TrES-2, TrES-3, and WASP-3 derived from radiance calibrated, clear #6 filtered images acquired by the Deep Impact High Resolution Visible CCD from 22 January through 31 August 2008 during the EPOCh phase of the EPOXI mission. The photometry data were derived from time series of continuous 50-second integrations used to observe each system for about three weeks, typically covering five or more transits as well as secondary eclipses.
EPOXI EXOPLANET TRANSIT OBS - HRIV CALIBRATED IMAGES V1.0
This data set set contains calibrated images of eight known transiting extrasolar planetary systems (hot Jupiters) acquired by the Deep Impact High Resolution Visible CCD during the EPOCh phase of the EPOXI mission. From 22 January through 31 August 2008 the HRIV CCD collected over 172,000 usable, photometric-quality visible light images of these transiting planet systems: HAT-P-4, HAT-P-7, GJ 436, TrES-2, TrES-3, XO-2, XO-3, and WASP-3. Time series of continuous 50-second integrations were used with the clear filter (#6) to observe each system for about three weeks, typically covering five or more transits as well as secondary eclipses. An exception was XO-3 which was only observed briefly due to the spacecraft entering safe mode. The transiting planet systems were observed in the integrated light of the planet and star; no spatially resolved image of the planet was possible.
EPOXI EXOPLANET TRANSIT OBS - HRIV RAW IMAGES V1.0
This data set set contains raw images of eight known transiting extrasolar planetary systems (hot Jupiters) acquired by the Deep Impact High Resolution Visible CCD during the EPOCh phase of the EPOXI mission. From 22 January through 31 August 2008 the HRIV CCD collected over 172,000 usable, photometric-quality visible light images of these transiting planet systems: HAT-P-4, HAT-P-7, GJ 436, TrES-2, TrES-3, XO-2, XO-3, and WASP-3. Time series of continuous 50-second integrations were used with the clear filter (#6) to observe each system for about three weeks, typically covering five or more transits as well as secondary eclipses. An exception was XO-3 which was only observed briefly due to the spacecraft entering safe mode. The transiting planet systems were observed in the integrated light of the planet and star; no spatially resolved image of the planet was possible.
EPOXI EXOPLANET TRANSIT OBS - HRIV CALIBRATED IMAGES V1.0
This data set set contains calibrated images of eight known transiting extrasolar planetary systems (hot Jupiters) acquired by the Deep Impact High Resolution Visible CCD during the EPOCh phase of the EPOXI mission. From 22 January through 31 August 2008 the HRIV CCD collected over 172,000 usable, photometric-quality visible light images of these transiting planet systems: HAT-P-4, HAT-P-7, GJ 436, TrES-2, TrES-3, XO-2, XO-3, and WASP-3. Time series of continuous 50-second integrations were used with the clear filter (#6) to observe each system for about three weeks, typically covering five or more transits as well as secondary eclipses. An exception was XO-3 which was only observed briefly due to the spacecraft entering safe mode. The transiting planet systems were observed in the integrated light of the planet and star; no spatially resolved image of the planet was possible.
EPOXI EXOPLANET TRANSIT OBS - HRIV STELLAR PHOTOMETRY V1.0
This data set contains aperture photometry of known transiting planet systems GJ 436, HAT-P-4, HAT-P-7, TrES-2, TrES-3, and WASP-3 derived from radiance calibrated, clear #6 filtered images acquired by the Deep Impact High Resolution Visible CCD from 22 January through 31 August 2008 during the EPOCh phase of the EPOXI mission. The photometry data were derived from time series of continuous 50-second integrations used to observe each system for about three weeks, typically covering five or more transits as well as secondary eclipses.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.