AndreaBozzo/ceres-open-data-index huggingface dataset:
M 51 Deep Chandra ACIS X-Ray Point Source Catalog

The authors obtained a deep X-ray image of the nearby galaxy M 51 using the Chandra X-Ray Observatory. Here the catalog of X-ray sources detected in these observations is presented, while an overview of the properties of the point-source population is provided in the reference paper. The authors find 298 sources within the D&lt;sub&gt;25&lt;/sub&gt; radii (the apparent major isophotal galactic radii measured at or reduced to the surface brightness level mu&lt;sub&gt;B&lt;/sub&gt; = 25.0 B-mag per square arcsecond) of NGC 5194 and NGC 5195, of which 20% are variable, a dozen are classical transients, and another half dozen are transient-like sources. The typical number of active ultraluminous X-ray sources in any given observation is ~5, and only two of those sources persist in an ultraluminous state over the 12 years of observations. Given reasonable assumptions about the supernova remnant population, the luminosity function is well described by a power law with an index between 1.55 and 1.7, only slightly shallower than that found for populations dominated by high-mass X-ray binaries (HMXBs), which suggests that the binary population in NGC 5194 is also dominated by HMXBs. The luminosity function of NGC 5195 is more consistent with a low-mass X-ray binary dominated population. This deep study of M51 is composed of 107 ks of archival Chandra observations, to which the authors added another 745 ks of observations. The Chandra ObsIDs and parameters of all of the observations used in this study (which span from June 2000 to October 2012) are given in Table 2 of the reference paper. All of the observations were made with the ACIS-S array. The authors used the ACIS Extract software package (AE) to perform the photometry. For each source, AE extracted a source region whose size and shape were based on the local PSF, and a background region whose size and shape were based on the size of the local PSF and the location of nearby sources. Source properties were then calculated in a standard manner. Of particular importance in this analysis is the prob_no_source parameter, which is the probability that one could measure the observed count rate in the absence of a source. The authors took a source to be significant only if this parameter was &lt; 5 x 10&lt;sup&gt;-6&lt;/sup&gt;. At this probability threshold, one would expect a single spurious source per field, or roughly 1.5 spurious sources within the D&lt;sub&gt;25&lt;/sub&gt; regions. As they used the same value in their analysis of M83 (Long et al. 2014, ApJS, 212, 21, the source catalog from which is available in the HEASARC database as the &lt;a href="/W3Browse/chandra/m83cxo.html"&gt;M83CXO&lt;/a&gt; table), the two catalogs are directly comparable. This table was created by the HEASARC in January 2017 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJ/827/46"&gt;CDS Catalog J/ApJ/827/46&lt;/a&gt; files table4.dat, table5.dat and table6.dat. This is a service provided by NASA HEASARC .

Tags: __
Organization: National Aeronautics and Space Administration
MARS EXPRESS SUN MRS 1/2/3 EXTENDED MISSION 7 4079 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2019-01-01 to 2020-12-31. It is a Solar Conjunction measurement and covers the time 2019-10-03T03:24:07.000 to 2019-10-03T06:33:33.500.

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RPCMIP 5 ESC4 V1.0

This archive contains derived data from the RPC-MIP instrument on-board ROSETTA Orbiter acquired during the COMET ESCORT 4 mission phase. Observations are performed in the vicinity of comet 67P/C-G. It also contains documentation which describes the RPC-MIP experiment. The data archived in this data set conform to the Planetary Data System Standards, Version 3.6.

Tags: __
Organization: National Aeronautics and Space Administration
HerMES 500 micron SUSSEXtractor Catalog

The Herschel Multi-tiered Extragalactic Survey (HerMES) is a legacy programme (KPGT_soliver1) designed to map a set of nested fields totalling 380 sq. deg. Fields range in size from 0.01 to 20 sq. deg., using SPIRE at 250, 350 and 500 microns. These bands cover the peak of the redshifted thermal spectral energy distribution from interstellar dust and thus capture the reprocessed optical and ultraviolet radiation from star formation that has been absorbed by dust, and are critical for forming a complete multiwavelength understanding of galaxy formation and evolution.

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RPCMIP 3 EXT2 V1.0

This archive contains calibrated data from the RPC-MIP instrument onboard ROSETTA Orbiter, acquired during the ROSETTA EXTENSION part 2 mission phase. The primary target was comet 67P/C-G. It also contains documentation which describes the MIP experiment. The data archived in this data set conform to the Planetary Data System Standards, Version 3.6.

Tags: __
Organization: National Aeronautics and Space Administration
ACTIVATE FLEXible PARTicle (FLEXPART) Dispersion Model Back-trajectories

ACTIVATE-FLEXPART is the FLEXible PARTicle dispersion model back-trajectories ending at the HU-25 Falcon locations. ACTIVATE was a 5-year NASA Earth-Venture Sub-Orbital (EVS-3) field campaign. Marine boundary layer clouds play a critical role in Earth’s energy balance and water cycle. These clouds cover more than 45% of the ocean surface and exert a net cooling effect. The Aerosol Cloud meTeorology Interactions oVer the western Atlantic Experiment (ACTIVATE) project was a five-year project that provides important globally-relevant data about changes in marine boundary layer cloud systems, atmospheric aerosols and multiple feedbacks that warm or cool the climate. ACTIVATE studied the atmosphere over the western North Atlantic and sampled its broad range of aerosol, cloud and meteorological conditions using two aircraft, the UC-12 King Air and HU-25 Falcon. The UC-12 King Air was primarily used for remote sensing measurements while the HU-25 Falcon will contain a comprehensive instrument payload for detailed in-situ measurements of aerosol, cloud properties, and atmospheric state. A few trace gas measurements were also onboard the HU-25 Falcon for the measurements of pollution traces, which will contribute to airmass classification analysis. A total of 150 coordinated flights over the western North Atlantic occurred through 6 deployments from 2020-2022. The ACTIVATE science observing strategy intensively targets the shallow cumulus cloud regime and aims to collect sufficient statistics over a broad range of aerosol and weather conditions which enables robust characterization of aerosol-cloud-meteorology interactions. This strategy was implemented by two nominal flight patterns: Statistical Survey and Process Study. The statistical survey pattern involves close coordination between the remote sensing and in-situ aircraft to conduct near coincident sampling at and below cloud base as well as above and within cloud top. The process study pattern involves extensive vertical profiling to characterize the target cloud and surrounding aerosol and meteorological conditions.

Tags: earth-science-atmospheric-chemistry-atmosphere-trace-gases-trace-species
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P MIDAS 3 EXT3 SAMPLES V2.0

The Micro-Imaging Dust Analysis System (MIDAS) is an instrument on theROSETTA Orbiter that will provide 3D images and statistical parametersof pristine cometary particles, collected in the vicinity of comet67P/Churyumov-Gerasimenko. This data set includes all data from theROSETTA EXTENSION 3 mission phase.The current release is based on the results of the Comet ScienceReviews held in Feb 2016 and Oct 2017 and supersedes version 1.0.

Tags: __
Organization: National Aeronautics and Space Administration
Updated Zwicky Catalog

The Zwicky Catalog of Galaxies, with a magnitude limit m&lt;sub&gt;Zw&lt;/sub&gt; &lt;= 15.5, has been the basis for the Center for Astrophysics (CfA) redshift surveys. To date, analyses of the Zwicky Catalog and redshift surveys based on it have relied on heterogeneous sets of galaxy coordinates and redshifts. In this Updated Zwicky Catalog (UZC), some of the inadequacies of previous catalogs are corrected by providing (1) coordinates with ~&lt;2 arcsecond errors for all of the 19,369 catalog galaxies, (2) homogeneously estimated redshifts cz (radial velocities) for the majority (98%) of the data taken at the CfA (14,632 spectra), and (3) an estimate of the remaining &quot;blunder&quot; rate for both the CfA redshifts and for those compiled from the literature. For the reanalyzed CfA data a calibrated, uniformly determined error and an indication of the presence of emission lines in each spectrum are included. Redshifts (radial velocities) are provided for the 7257 galaxies in the CfA2 redshift survey that were not previously published; for another 5625 CfA redshifts (radial velocities), the remeasured or uniformly rereduced values are listed. Among the new measurements, 1807 are members of UZC &quot;multiplets&quot; associated with the original Zwicky catalog position in the coordinate range where the catalog is 98% complete. These multiplets provide new candidates for examination of tidal interaction among galaxies. All of the new redshifts (radial velocities) correspond to UZC galaxies with properties recorded in the CfA redshift compilation known as ZCAT. The redshift catalog included in the UZC is ~96% complete to m&lt;sub&gt;Zw&lt;/sub&gt; &lt;= 15.5 and ~98% complete (12,925 galaxies out of a total of 13,150) for the right ascension ranges 20 hr &gt;= RA(1950) &lt;= 4 hr and 8 hr &lt;= RA(1950) &lt;= 17 hr and the declination range -2.5 degrees &lt;= Dec(1950) &lt;= 50 degrees. This more complete region includes all of the CfA2 survey as analyzed to the date of the publication of the UZC (1999). This database was created by the HEASARC in October 2000 based on a machine-readable version obtained from the CDS (Catalog J/PASP/111/438). It was slightly revised in February 2001 (the &#39;redshift&#39; parameters were renamed as &#39;radial velocity&#39; parameters to conform with the usage in other similar HEASARC extragalactic catalogs). This is a service provided by NASA HEASARC .

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 1 0570 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 1 phase 2014-11-20 to 2015-03-10. It is a Global Gravity measurement at the comet 67P and covers the time 2015-02-09T11:06:40.000 to 2015-02-09T22:33:38.000.

Tags: __
Organization: National Aeronautics and Space Administration
MARS EXPRESS SUN MRS 1/2/3 EXTENDED MISSION 5 3729 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2015-01-01 to 2016-12-31. It is a Solar Conjunction measurement and covers the time 2015-05-04T05:44:45.000 to 2015-05-04T09:15:12.500.

Tags: __
Organization: National Aeronautics and Space Administration
Eta Chamaeleontis eROSITA EDR Field X-Ray (0.2-2.3 keV) Source Catalog

This database table contains the &quot;main&quot; (0.2-2.3 keV) catalog of the X-ray sources in the eta Chamaeleontis field scan eROSITA observation (OBSID 300004; see Robrade et al., 2022). The nearby young open cluster eta Chamaeleontis was observed by eROSITA/SRG during its CalPV phase for 150 ks. The eROSITA data were taken in the field-scan mode, an observing mode of Spectrum-Roentgen-Gamma (SRG) that follows a rectangular grid-like pattern, covering a 5x5 deg field with an exposure depth of about 5 ks. The authors studied the known members in X-rays and searched for potential new members of the anticipated dispersed low-mass cluster population. Detected sources were identified by cross-matching X-ray sources with Gaia and 2MASS, and young stars were identified by their X-ray activity, by their position in the color-magnitude diagram, and by their astrometric and kinematic properties. X-ray luminosities, light curves, and spectra of cluster members were obtained and compared with previous X-ray data. Literature results of other member searches were used to verify the new member candidates in the observed field. The authors determined X-ray properties of virtually all known eta Cha members and identified five additional stellar systems that showed basically identical characteristics, but are more dispersed. Four of them were previously proposed as potential members; this status is supported by this X-ray study. Based on their spatial distribution, further members are expected beyond the sky region surveyed. The identified stellar systems very likely belong to the ejected halo population, which brings the total number of eta Cha cluster members to at least 23. &lt;a href="/W3Browse/erosita/etachahard.html"&gt;ETACHAHARD&lt;/a&gt; is the related catalog of hard band (2.3-5.0 keV) sources. This database table was ingested by the HEASARC in August 2022 and is based upon a file downloaded from the eROSITA-DE Early Data Release &lt;a href="https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/"&gt;catalogs web page&lt;/a&gt;. In some cases, the HEASARC has altered the original field names, as per HEASARC conventions, and provides the original field names in square brackets. This is a service provided by NASA HEASARC .

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER PRELANDING OSINAC 3 RDR MTP001 V2.0

This data set contains images acquired by the OSIRIS Narrow Angle Camera during the PRELANDING phase of the Rosetta mission at the comet 67P, covering the period from 2014-01-20T10:00:00.000 to 2014-05-07T12:47:59.000. This version V2.0 supersedes previous deliveries of the same dataset.

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER COMET PRELANDING OSIWAC 2 EDR MTP 005 V1.0

This data set contains raw EDR images acquired by the OSIRIS Wide AngleCamera during the prelanding phase of the Rosetta mission at the comet 67P,covering the period from 2014-07-02 to 2014-08-01.

Tags: __
Organization: National Aeronautics and Space Administration
MARS EXPRESS SUN MRS 1/2/3 EXTENDED MISSION 8 4225 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2021-01-01 to 2022-12-31. It is a Solar Conjunction measurement and covers the time 2021-09-15T00:26:51.399 to 2021-09-15T03:17:58.500.

Tags: __
Organization: National Aeronautics and Space Administration
StarswithRotationPeriods&X-RayLuminositiesCatalog

This table contains photometric and derived stellar parameters for a sample of 820 solar and late-type stars (the original table of 824 entries had 4 near-duplicate entries for the stars HD 19668, HD 95188, HD 216803 and HD 285382 which have been removed by the HEASARC) from nearby open clusters and the field, including rotation periods and X-ray luminosities. This sample was used by the authors to study the relationship between rotation and stellar activity and derive a new estimate of the convective turnover time. From an unbiased subset of this sample the power law slope of the unsaturated regime, L&lt;sub&gt;X&lt;/sub&gt;/L&lt;sub&gt;bol&lt;/sub&gt; ~ R&lt;sub&gt;o&lt;/sub&gt;&lt;sup&gt;beta&lt;/sup&gt;, is fit as beta = -2.70 +/- 0.13. This is inconsistent with the canonical beta = -2 slope to a confidence of 5 sigma, and argues for an additional term in the dynamo number equation. From a simple scaling analysis, this implies Delta(Omega)/Omega ~ Omega&lt;sup&gt;0.7&lt;/sup&gt;, i.e. the differential rotation of solar-type stars gradually declines as they spin down. Super-saturation is observed for the fastest rotators in this sample and its parametric dependencies are explored. Significant correlations are found with both the corotation radius and the excess polar updraft, the latter theory providing a stronger dependence and being supported by other observations. The authors estimate mass-dependent empirical thresholds for saturation and super- saturation and map out three regimes of coronal emission. Late F-type stars are shown never to pass through the saturated regime, passing straight from super-saturated to unsaturated X-ray emission. The theoretical threshold for coronal stripping is shown to be significantly different from the empirical saturation threshold (R&lt;sub&gt;o&lt;/sub&gt; &lt; 0.13), suggesting it is not responsible. Instead, the authors suggest that a different dynamo configuration is at work in stars with saturated coronal emission. This is supported by a correlation between the empirical saturation threshold and the time when stars transition between convective and interface sequences in rotational spin-down models. This table was created by the HEASARC in March 2012 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJ/743/48"&gt;CDS Catalog J/ApJ/743/48&lt;/a&gt; file catalog.dat. The original table had 824 entries, including 4 near-duplicate entries for the stars HD 19668, HD 95188, HD 216803 and HD 285382, which have been removed by the HEASARC. This is a service provided by NASA HEASARC .

Tags: __
Organization: National Aeronautics and Space Administration
ChandraLockmanAreaNorthSurvey(CLANS)Optical&IRCatalog

This table contains the redshift catalog for the X-ray sources detected in the Chandra Lockman Area North Survey (CLANS). The redshifts for the CLANS field are all new. For fluxes above 10&lt;sup&gt;-14&lt;/sup&gt; ergs cm&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; (2-8 keV) the authors have redshifts for 76% of the sources in the CLANS, CLASXS, and CDF-N surveys. They extend the redshift information for the full sample using photometric redshifts. The goal of the OPTX Project is to use these three surveys, which are among the most spectroscopically complete surveys to date, to analyze the effect of spectral type on the shape and evolution of the X-ray luminosity functions and to compare the optical spectral types with the X-ray spectral properties. The optical and infrared photometric catalog for the CLANS X-ray sources is presented here (see the CLANS Browse table for the X-ray information). The CLANS and CLASXS surveys bridge the gap between the ultra-deep pencil-beam surveys, such as the CDFs, and the shallower, very large-area surveys. As a result, they probe the X-ray sources that contribute the bulk of the 2-8 keV X-ray background and cover the flux range of the observed break in the log N - log S distribution. This table was created by the HEASARC in December 2008 based on the electronic version of Table 11 from the paper which was obtained from the ApJ web site. This is a service provided by NASA HEASARC .

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P MIRO 3 EXT2 V3.0

This data set contains Spectroscopic and Continuum, level 3 data, in the form of table files, taken during the ROSETTA EXTENSION 2 phase of the Rosetta mission to comet 67P/CHURYUMOV-GERASIMENKO by the MIRO instrument. It supercedes data sets with a lower version number. The updates include a new calibration algorithm and modified documentation.

Tags: __
Organization: National Aeronautics and Space Administration
ACOS GOSAT/TANSO-FTS Level 2 Full Physics Standard Product V9r (ACOS_L2S) at GES DISC

Version 9r is the current version of the data set. Older versions will no longer be available and are superseded by Version 9r. This data set is currently provided by the OCO (Orbiting Carbon Observatory) Project. In expectation of the OCO-2 launch, the algorithm was developed by the Atmospheric CO2 Observations from Space (ACOS) Task as a preparatory project, using GOSAT TANSO-FTS spectra. After the OCO-2 launch, "ACOS" data are still produced and improved, using approaches applied to the OCO-2 spectra. The "ACOS" data set contains Carbon Dioxide (CO2) column averaged dry air mole fraction for all soundings for which retrieval was attempted. These are the highest-level products made available by the OCO Project, using TANSO-FTS spectral radiances, and algorithm build version 7.3. The GOSAT team at JAXA produces GOSAT TANSO-FTS Level 1B (L1B) data products for internal use and for distribution to collaborative partners, such as ESA and NASA. These calibrated products are augmented by the OCO Project with additional geolocation information and further corrections. Thus produced Level 1B products (with calibrated radiances and geolocation) are the input to the "ACOS" Level 2 production process. Even though the GES DISC is not publicly distributing Level 1B ACOS products, it should be known that changes in this version are affecting both Level 1B and Level 2 data. An important enhancement in Level1B will address the degradation in the number of quality-passed soundings. Elimination of many systematic biases, and better agreement with TCCON (Total Carbon Column Observing Network), is expected in Level 2 retrievals. The key changes to the L2 algorithm include scaling the O2-A band spectroscopy (reducing XCO2 bias by 4 or 5 ppm); using interpolation with the instrument lineshape [ ILS ] (reducing XCO2 bias by 1.5 ppm); and fitting a zero level offset to the A-band. Users have to also carefully familiarize themselves with the disclaimer in the new documentation. An important element to note are the updates on data screening. Although a Master Quality Flag is provided in the data product, further analysis of a larger set of data has allowed the science team to provide an updated set of screening criteria. These are listed in the data user's guide, and are recommended instead of the Master Quality Flag. Lastly, users should continue to carefully observe and weigh information from three important flags: "sounding_qual_flag" - quality of input data provided to the retrieval processing "outcome_flag" - retrieval quality based upon certain internal thresholds (not thoroughly evaluated)

Tags: earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-atmospheric-car
Organization: National Aeronautics and Space Administration
Aerosol Characterization Experiment (ACE) - Asia

Measurements taken during the Aerosol Characterization Experiment (ACE) off the coast of Asia in the East China Sea, Sea of Japan, and Pacific Ocean.

Tags: earth-science-ocean-chemistry-oceans, earth-science-ocean-optics-oceans, earth-science-ocean-temperature-oceans, earth-science-salinity-density-oceans
Organization: National Aeronautics and Space Administration
ROSETTA-LANDER CAL ROLIS 2 PHC V1.0

This archive contains raw images from the ROLIS instrument onboard ROSETTA Lander, acquired during the PHC (Post Hibernation Commissioning) phase. It also contains documentation which describes the ROLIS experiment. The data archived in this data set conform to the Planetary Data System (PDS) Standards, Version 3.6.

Tags: __
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 4 1173 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 4 phase 2015-10-22 to 2015-12-31. It is a Global Gravity measurement at the comet 67P and covers the time 2015-11-11T08:16:45.000 to 2015-11-11T16:59:19.000.

Tags: __
Organization: National Aeronautics and Space Administration
MARS EXPRESS SUN MRS 1/2/3 EXTENDED MISSION 3 2739 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2010-01-01 to 2012-12-31. It is a Solar Conjunction measurement and covers the time 2011-01-25T16:06:31 to 2011-01-25T18:14:56.500.

Tags: __
Organization: National Aeronautics and Space Administration