AndreaBozzo/ceres-open-data-index huggingface dataset:
Chandra ACIS Survey for X-Ray AGN in Nearby Galaxies

The authors searched the public archive of the Chandra X-ray Observatory as of 2016 March and assembled a sample of 719 galaxies within 50 Mpc with available Advanced CCD Imaging Spectrometer observations. By cross-correlation with the optical or near-infrared nuclei of these galaxies, 314 of them are identified to have an X-ray active galactic nucleus (AGN). The majority of them are low-luminosity AGNs and are unlikely X-ray binaries based upon their spatial distribution and luminosity functions. The AGN fraction is around 60% for elliptical galaxies and early-type spirals, but drops to roughly 20% for Sc and later types, consistent with previous findings in the optical. However, the X-ray survey is more powerful in finding weak AGNs, especially from regions with active star formation that may mask the optical AGN signature. For example, 31% of the H II nuclei are found to harbor an X-ray AGN. For most objects, a single power-law model subject to interstellar absorption is adequate to fit the spectrum, and the typical photon index is found to be around 1.8. For galaxies with a non-detection, their stacked Chandra image shows an X-ray excess with a luminosity of a few times 10&lt;sup&gt;37&lt;/sup&gt; erg/s on average around the nuclear region, possibly composed of faint X-ray binaries. This paper reports on the technique and results of the survey; in-depth analysis and discussion of the results were to be reported in forthcoming papers, e.g., She et al. (2017, ApJ, 842, 131). The sample was assembled based on Chandra/ACIS observations that were publicly available as of 2016 March. The authors first generated a full list of ACIS observations, and then searched in the NASA/IPAC Extragalactic Database (NED) for galaxies within 50 Mpc whose nuclear positions were less than 8 arcminutes from the aim point of any Chandra observation. The adopted distances were taken from NED, in the following order of priority: surface brightness fluctuations, Cepheid variables, tip of the red giant branch, Type Ia supernovae, the fundamental plane, Faber-Jackson relation, Tully-Fisher relation. If more than one reference is available for the distance by the same means, the latest one is selected, unless otherwise specified. Whenever possible, the authors obtain positions of the galaxy nuclei based on measurements from near-infrared images, which suffer from less obscuration by dust or confusion from young star-forming regions. Most of the data come from the Two-Micron All Sky Survey (2MASS) extended source catalog (Skrutskie et al. 2006, AJ, 131, 1163), or NED otherwise. In a few cases, the NED positions come from radio observations. The authors discarded galaxies whose nuclear positions in NED were obtained from X-ray observations. This table was created by the HEASARC in September 2017 based upon the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJ/835/223"&gt;CDS Catalog J/ApJ/835/223&lt;/a&gt; files table1.dat, table2.dat and table4.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
MARS EXPRESS ASPERA-3 RAW EDR ION MASS ANALYZER EXT5 V1.0

This data set contains Mars Express ASPERA-3 Ion Mass         Analyzer (IMA) data for the fifth mission extension         (January 1, 2015 - December 31, 2016).  These data are         provided in raw units of counts/accumulation.

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Organization: National Aeronautics and Space Administration
ULYSSES JUPITER EPAC OMNI-DIRECTIONAL                                        PROTON FLUX 1 HR AVG

This data set contains Ulysses Energetic Particle Composition      Experiment (EPAC) 1 hour averaged omni-directional proton flux      data from the Ulysses Jupiter encounter 1992-Jan-25 to      1992-Feb-28. These data were recorded by Omni-directional      Protons Spin Averages Telescopes (OPTL) 1-4.

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Organization: National Aeronautics and Space Administration
ROSAT Results Archive Sources for the HRI

The ROSHRI data table contains a list of sources detected by the Standard Analysis Software System (SASS) in reprocessed, public HRI datasets. In addition to the parameters returned by SASS (like position, count rate, signal-to-noise, etc.) each source in the table has associated with it a set of source and sequence &quot;flags.&quot; These flags are provided by the ROSAT data centers in the US, Germany and the UK to help the user of the ROSHRI database table quickly judge the reliability of a given source. The ROSHRI table excludes sources that meet the following parameter criteria: false_det = &#39;T&#39; or deferred = &#39;T&#39; or not_checked = &#39;T&#39; or un_unique =&#39;T&#39;. See the documentation below for descriptions of these parameters. These data have been screened by ROSAT data centers in the US, Germany, and the UK as a step in the production of the ROSAT Results Archive. The RRA contains extracted source and associated products with an indication of reliability for the primary parameters. This database table was last updated in August 2001. More information about the ROSAT Results Archive for HRI sources can be obtained at the following web pages: &lt;pre&gt; &lt;a href="http://heasarc.gsfc.nasa.gov/docs/rosat/rra/RRA.html"&gt;http://heasarc.gsfc.nasa.gov/docs/rosat/rra/RRA.html&lt;/a&gt; &lt;a href="http://hea-www.harvard.edu/rosat/rra.html"&gt;http://hea-www.harvard.edu/rosat/rra.html&lt;/a&gt; &lt;a href="http://www.aip.de/groups/xray/rosat/rra.html"&gt;http://www.aip.de/groups/xray/rosat/rra.html&lt;/a&gt; &lt;a href="http://ledas-www.star.le.ac.uk/rra"&gt;http://ledas-www.star.le.ac.uk/rra&lt;/a&gt; &lt;/pre&gt; This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
ChandraDeepFieldNorth2-MegasecondOptical&IRCatalog

The Chandra Deep Field North (CDFN) 2-Megasecond (2Ms) Optical and IR Catalog is an optical and near-infrared catalog for the X-ray sources in the 2Ms Chandra observation of the Hubble Deep Field North region. It has high-quality multicolor imaging data for all 503 X-ray point sources in the X-ray-selected catalog and reliable spectroscopic redshifts for 284. The authors have spectroscopically identified six high-redshift (z &gt; 1) type II quasars (L&lt;sub&gt;2-8keV&lt;/sub&gt; &gt; 10&lt;sup&gt;44&lt;/sup&gt; ergs/s) in their sample. The spectroscopic completeness for the R &lt;= 24 sources is 87%. The spectroscopic redshift distribution shows two broad redshift spikes that have clearly grown over those originally seen in the 1Ms exposure. The spectroscopically identified extragalactic sources already comprise 75% of the measured 2-8 keV light. Redshift slices versus 2-8 keV flux show that an impressive 54% of the measured 2-8 keV light arises from sources at z &lt; 1 and 68% from sources at z &lt; 2. The X-ray sample is presented in Alexander et al. (2003, AJ, 126, 539, hereafter ABB2003) and in &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/AJ/126/539"&gt;CDS Catalog &lt;J/AJ/126/539&gt;&lt;/a&gt;, and is also available in the HEASARC Browse system as the CHANDFN2MS table. The optical imaging data consist of Johnson B, Johnson V, Cousins R, Cousins I, and Sloan z&#39; observations obtained with the Subaru prime-focus camera Suprime-Cam on the Subaru 8.2m telescope during February-April of 2001 and 2002. This table was created by the HEASARC in April 2004 based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/AJ/126/632/table1a"&gt;CDS Catalog J/AJ/126/632/table1a&lt;/a&gt;.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
Planck PCCS2 857GHz Catalog

The second Planck Catalogue of Compact Sources (PCCS2) is a set of single-frequency source catalogues extracted from the Planck full-mission maps in intensity and polarization. The 100, 143, 217, and 353 GHz catalogs include polarization measurements. The 857 GHz source list has six additional columns which give the flux densities and flux density uncertainties at the three adjacent lower frequencies: 217, 353, and 545 GHz.

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Organization: National Aeronautics and Space Administration
ELAIS S1 Field XMM-Newton X-Ray Source Catalog

The formation and evolution of cosmic structures can be probed by studying the evolution of the luminosity function of the Active Galactic Nuclei (AGNs), galaxies and clusters of galaxies and of the clustering of the X-ray active Universe, compared to the IR-UV active Universe. To this purpose, the authors have surveyed with XMM-Newton the central ~0.6 deg&lt;sup&gt;2&lt;/sup&gt; region of the ELAIS-S1 field down to flux limits of ~5.5 x 10&lt;sup&gt;-16&lt;/sup&gt; erg cm&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; (0.5-2 keV, soft band, S), ~2 x 10&lt;sup&gt;-15&lt;/sup&gt; erg cm&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; (2-10 keV, hard band, H), and ~4 x 10&lt;sup&gt;-15&lt;/sup&gt; erg cm&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; (5-10 keV, ultra-hard band, HH). They present here the analysis of the XMM-Newton observations, the number counts in different energy bands and the clustering properties of the X-ray sources. They have detected a total of 478 sources, 395 and 205 of which detected in the S and H bands respectively. They identified 7 clearly extended sources and estimated their redshift through X-ray spectral fits with thermal models. In four cases the redshift is consistent with z = 0.4, so they may have detected a large scale structure formed by groups and clusters of galaxies through their hot intra-cluster gas emission. The relative density of the S band sources is higher near the clusters and groups at z ~ 0.4 and extends toward East and the South/West. This suggests that the structure is complex, with a size comparable to the full XMM-Newton field. Conversely, the highest relative source densities of the H band sources are located in the central-west region of the field. The mosaic of four partially overlapping deep XMM-Newton pointings covers a large (~0.6 deg&lt;sup&gt;2&lt;/sup&gt;) and contiguous area of the ELAIS-S1 region. The pointings are named &lt;pre&gt; ELAIS-S1-A (RA=8.91912, DE=-43.31344, J2000), ELAIS-S1-B (RA=8.92154, DE=-43.65575, J2000), ELAIS-S1-C (RA=8.42195, DE=-43.30488, J2000) and ELAIS-S1-D (RA=8.42375, DE=-43.65327, J2000). &lt;/pre&gt; The X-ray observations were performed on May 2003 through July 2003 with XMM-Newton&#39;s European Photon Imaging Camera (EPIC) and two MOS-CCD cameras. This table was created by the HEASARC in June 2008 based on the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/457/501"&gt;CDS Catalog J/A+A/457/501&lt;/a&gt; files elaisxmm.dat and catalog.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RPCICA 5 ESC4 MOMENT V1.0

This dataset contains DERIVED MOMENT data of ion density and ion bulkvelocity for masses 1,2,4 and 18 amu / e, from the RPCICAinstrument on mission ROSETTA during Comet escort 4.Data contains measurements of solar wind interactionwith the atmosphere of target comet 67P.

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Organization: National Aeronautics and Space Administration
Einstein Observatory 2E Catalog of IPC X-Ray Sources

This is the Einstein Observatory 2E Catalog of Imaging Proportional Counter (IPC) X-Ray Sources which was created by the HEASARC from the CDS Catalog IX/13. This latter catalog was prepared by the CDS in October 1996 based on the Einline version. It is similar to the HEASARC&#39;s IPC source catalog which the HEASARC created in the early 1990s directly based on Einstein Observatory Source Catalog tables obtained from the then-extant Astrophysics Data System distributed data archive. The IPC Catalog contains 6816 entries compared to 5948 entries in this catalog, notice. This catalog contains sources with signal-to-noise values of 3.5 and greater from Einstein IPC observations. Note that a single source may have more than one entry in this catalog. This catalog was created by the HEASARC in November 2000 based on the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/IX/13"&gt;CDS Catalog IX/13&lt;/a&gt; file 2e.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER CHECKOUT OSINAC 3 CR4A RDR V2.0

This CODMAC level 3 data set contains radiometric calibrated image data in W/m^2/sr/nm,  acquired by the OSIRIS Narrow Angle Camera on the Rosetta spacecraft  during the CRUISE 4-1 mission phase, covering the period  from 2008-01-28T00:00:00.000 to 2008-08-03T23:59:59.000. The prime objective was commissioning / calibration. Several targets of opportunity were observed, but none of them is identifiable as prime target. This version V2.0 supersedes previous deliveries of the same dataset with the following changes since the last version: Reprocessed dataset after October 2018 PSA/PDS external peer review.

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Organization: National Aeronautics and Space Administration
ROSETTA-LANDER CAL PTOLEMY 3 PDCS V1.0

This archive contains calibrated data from the PTOLEMY instrument onboard ROSETTA Lander, acquired during the PDCS mission phase. It also contains documentation which describes the PTOLEMY experiment. The data archived in this data set conform to the Planetary Data System (PDS) Standards, Version 3.6.

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Organization: National Aeronautics and Space Administration
Faust Far-UV Point Source Catalog

This catalog contains a list of the photometric measurements of point sources made by the Far Ultraviolet Space Telescope (FAUST) when it flew on the ATLAS-1 space shuttle mission. The list contains 4660 galactic and extragalactic objects detected in 22 wide-field images of the sky (note that the abstract of the published catalog states that it contains 4698 sources: the reason for this discrepancy is not known to the HEASARC). At the locations surveyed, this catalog reaches a limiting magnitude that is approximately a factor of 10 fainter than the previous UV all-sky survey, TD1. The catalog limit is approximately 1x10&lt;sup&gt;-14&lt;/sup&gt; ergs/s/cm&lt;sup&gt;2&lt;/sup&gt;/Angstrom, although it is not complete to this level. Listed for each object is the position, Far-UV (FUV) flux, the error in this flux, and, where possible, an identification from catalogs of nearby stars and galaxies. These catalogs include the Michigan HD (MHD) and HD Catalogs, the SAO Catalog, the HIPPARCOS Input Catalog (HIC), the Position and Proper Motion (PPM) Catalog, the TD1 Catalog, the McCook and Sion Catalog of white dwarf stars, and the RC3 Catalog of Galaxies. 2239 FAUST sources are identified with objects in the stellar catalogs and 172 with galaxies in the RC3 catalog. The number of sources with incorrect identifications is estimated to be less than 2%. Of the 4660 FUV sources in this catalog, 161 have multiple stellar and/or galaxy counterparts (155 sources have 2 possible counterparts, 4 sources have 3 possible counterparts, 1 source has 4 possible counterparts, and 1 source has 6 possible counterparts), with the 4499 remaining FUV sources having 0 or 1 stellar and/or galaxy counterparts. Hence, there are a grand total of 4831 = (4499 + 155x2 + 4x3 + 1x4 + 1x6) entries in this database, since each entry corresponds to a source/counterpart combination. The HEASARC added a parameter &#39;multiple_ID&#39; to allow the user to identify sources with multiple possible counterparts. FAUST Sources with multiple counterparts thus have multiple entries in this database, and can be recognized by having multiple_id values greater than 1 (and differing information in the parameter fields that contain the properties of the stellar and/or galaxy counterparts). This catalog was created at the HEASARC in September 1998 based on CDS/ADC Catalog J/ApJS/96/461. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
Taurus Catalog

The Spitzer Space Telescope Survey of the Taurus is a Legacy III project titled, Taurus 2: Finishing the Spitzer Map of the Taurus Molecular Clouds (Taurus). The Taurus Spitzer Legacy project has mapped ≈44 square degrees of the Taurus star-formation region using the IRAC and MIPS cameras aboard the Spitzer Space Telescope. In this release, the team provides a bandmerged catalog of 269,358 point sources for the initial 70% of the survey area ("Taurus 1"). Flux densities are reported for the 3.6, 4.5, 5.8, 8.0, and 24 micron bands of IRAC and MIPS. MIPS 70 micron flux densities are also given for a small number of sources. Aperture photometry at three radii is provided for IRAC sources. PSF-fitting photometry is reported for MIPS flux densities.

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RPCMIP 5 ESC1 V1.0

This archive contains derived data from the RPC-MIP instrument on-board ROSETTA Orbiter acquired during the COMET ESCORT 1 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.

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Organization: National Aeronautics and Space Administration
Galactic O Stars Catalog

This database table is based upon the information contained in the Catalog of Galactic O-Type Stars (Garmany, Conti, and Chiosi 1982), which is a compilation from the literature of all O-type stars for which spectral types, luminosity classes, and UBV photometry exist. Most of the entries come from Cruz-Gonzalez, et al. (1974) and Humphreys (1978), with additional stars from Garrison and Kormendy (1976); Garrison, Hiltner, and Schild (1977); Garrison and Schild (1979); Feinstein, Marraco, and Muzzio (1973); Feinstein, Marraco, and Forte (1976); and Moffat, Fitzgerald, and Jackson (1979). As discussed below, the HEASARC has deleted 5 of the original 765 entries which we believe to be erroneous and/or redundant, and modified the names and/or positions of 14 other entries. As part of the checking process, the HEASARC created new, more accurate positions for all the entries using the SIMBAD database. The catalog contains 760 stars, for each of which designations (HD, DM, etc.), spectral types, V magnitudes, B-V magnitudes, cluster memberships, positional information, and source references are given. In addition, the authors have included derived values of absolute visual and bolometric magnitudes, and distances. The source reference should be consulted for additional details concerning the derived quantities. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
NEW HORIZONS  SDC PLUTO ENCOUNTER  RAW V3.0

This data set contains Raw data taken by the New Horizons  Student Dust Counter  instrument during the  Pluto encounter  mission phase. This is VERSION 3.0 of this data set.   This data set contains SDC observations taken during the  the Approach (Jan-Jul, 2015), Encounter, Departure, and  Transition mission sub-phases, including flyby observations  taken on 14 July, 2015, and departure and calibration data  through late October, 2016. This data set completes the  Pluto mission phase deliveries for SDC.   This is version 3.0 of this data set. Changes since version 2.0  include the final batch of Pluto mission phase data, downlinked  between the end of January, 2016 and late in October, 2016, including  a Stim calibration in July. Also, updates were made to the  documentation and catalog files, primarily to implement suggestions  from the V2.0 peer review. A new table of SDC Ram (velocity)  ancillary data has been provided, and the SDC on/off and Stim tables  have been extended in time to cover the new data.

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 2 0739 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 2 phase 2015-03-11 to 2015-06-30. It is a Global Gravity measurement at the comet 67P and covers the time 2015-04-29T07:51:15.000 to 2015-04-29T13:09:11.000.

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Organization: National Aeronautics and Space Administration
KORUS-AQ Ancillary Analysis Data

KORUSAQ_Analysis_Data are supplementary ancillary analysis files collected during the KORUS-AQ field campaign. This collection includes plume flags, co/co2 ratios, AMS analysis, and DIAL mixed layer heights. The KORUS-AQ field study was conducted in South Korea during May-June, 2016. The study was jointly sponsored by NASA and Korea’s National Institute of Environmental Research (NIER). The primary objectives were to investigate the factors controlling air quality in Korea (e.g., local emissions, chemical processes, and transboundary transport) and to assess future air quality observing strategies incorporating geostationary satellite observations. To achieve these science objectives, KORUS-AQ adopted a highly coordinated sampling strategy involved surface and airborne measurements including both in-situ and remote sensing instruments. Surface observations provided details on ground-level air quality conditions while airborne sampling provided an assessment of conditions aloft relevant to satellite observations and necessary to understand the role of emissions, chemistry, and dynamics in determining air quality outcomes. The sampling region covers the South Korean peninsula and surrounding waters with a primary focus on the Seoul Metropolitan Area. Airborne sampling was primarily conducted from near surface to about 8 km with extensive profiling to characterize the vertical distribution of pollutants and their precursors. The airborne observational data were collected from three aircraft platforms: the NASA DC-8, NASA B-200, and Hanseo King Air. Surface measurements were conducted from 16 ground sites and 2 ships: R/V Onnuri and R/V Jang Mok. The major data products collected from both the ground and air include in-situ measurements of trace gases (e.g., ozone, reactive nitrogen species, carbon monoxide and dioxide, methane, non-methane and oxygenated hydrocarbon species), aerosols (e.g., microphysical and optical properties and chemical composition), active remote sensing of ozone and aerosols, and passive remote sensing of NO2, CH2O, and O3 column densities. These data products support research focused on examining the impact of photochemistry and transport on ozone and aerosols, evaluating emissions inventories, and assessing the potential use of satellite observations in air quality studies.

Tags: earth-science-aerosols-atmosphere-aerosol-particle-properties, earth-science-aerosols-atmosphere-organic-particles, earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-atmospheric-car
Organization: National Aeronautics and Space Administration
NEAR NIS SPECTRA FOR EROS/ORBIT

This data set contains the NEAR infrared spectrometer (NIS) data for the EROS/ORBIT phase. The data set begins on 2000-01-11T00:00:00.000 and ends 2001-02-12T23:59:59.999 . The data are raw telemetry data, provided in engineering units, that have been reformatted into FITS file format (NASA Office of Science and Technology (NOST), 100-1.0). In addition to the raw spectrometer data, a calibration file and algorithm are available. This data set is archived as a set of CDROM images as a part of the NEAR EDR volume set.

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Organization: National Aeronautics and Space Administration