AndreaBozzo/ceres-open-data-index huggingface dataset:
Chandra COSMOS (C-COSMOS) Survey Photometric Redshift Catalog

In their paper, the authors release accurate photometric redshifts for 1692 counterparts to Chandra sources in the central square degree of the Cosmic Evolution Survey (COSMOS) field. The availability of a large training set of spectroscopic redshifts that extends to faint magnitudes enabled photometric redshifts comparable to the highest quality results presently available for normal galaxies. The authors demonstrate that morphologically extended, faint X-ray sources without optical variability are more accurately described by a library of normal galaxies (corrected for emission lines) than by active galactic nucleus (AGN) dominated templates, even if these sources have AGNlike X-ray luminosities. Preselecting the library on the bases of the source properties allowed them to reach an accuracy sigma[Delta-z/(1+Z&lt;sub&gt;spec&lt;/sub&gt;)] ~ 0.015 with a fraction of outliers of 5.8% for the entire Chandra-COSMOS sample. In addition, in this study the authors released revised photometric redshifts for the 1735 optical counterparts of the XMM-detected sources over the entire 2 deg&lt;sup&gt;2&lt;/sup&gt; of COSMOS (these sources are listed in the HEASARC table XMMCPHOTZ). For 248 sources, their updated photometric redshift differs from the previous release by Delta-z &gt; 0.2. These changes are predominantly due to the inclusion of newly available deep H-band^ photometry (H&lt;sub&gt;AB&lt;/sub&gt; = 24 mag). The authors illustrate once again the importance of a spectroscopic training sample and how an assumption about the nature of a source together, with the number and the depth of the available bands, influences the accuracy of the photometric redshifts determined for AGN. These considerations should be kept in mind when defining the observational strategies of upcoming large surveys targeting AGNs, such as eROSITA at X-ray energies and the Australian Square Kilometre Array Pathfinder Evolutionary Map of the Universe in the radio band. This table contains the photometric redshifts and related quantities for 1694 (note that there appears to be 2 more sources than the above-quoted abstract states) Chandra sources in the central square degree of the COSMOS field. Notice that in the original as-published paper no positional information was provided. The HEASARC has assumed that the source numbers used in the present catalog are in the same source numbering scheme as used by Elvis et al. (2009, ApJS, 184, 158, the Chandra COSMOS Survey Point Source Catalog, available at the HEASARC as the CCOSMOSCAT table) and thus obtained the positions and (position-based) names corresponding to these sources. This table was created by the HEASARC in November 2011 based on an electronic version of Table 4 from the reference paper which was obtained from the ApJ website. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 5 3852 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 Occultation measurement and covers the time 2016-10-31T11:31:01 to 2016-10-31T12:14:00.

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Organization: National Aeronautics and Space Administration
ROSAT All-Sky Survey Archival Data

This database table contains the list German ROSAT All-Sky Survey observations which were obtained during the ROSAT All-Sky Survey phase (1990 July 30 to 1991 Jan 25) and which have become available to the public. These data were obtained in scanning mode and therefore an individual dataset covers a much larger area of the sky than do pointed moded observations. In addition all these data were obtained with PSPC-C, while all pointed mode observations after the end of the All-Sky Survey were obtained with PSPC-B. For each observation listed in this database table, the instrument used, processing site, and coordinates of the field center are given, as well as the ROSAT observation request number (ROR), actual exposure time, date the observation took place, and more. For details about the ROSAT instruments, consult the ROSAT Mission Description (NASA Research Announcement for ROSAT, Appendix F and its addendum) and the ROSAT GSFC GOF website at &lt;a href="http://heasarc.gsfc.nasa.gov/docs/rosat/rosgof.html"&gt;http://heasarc.gsfc.nasa.gov/docs/rosat/rosgof.html&lt;/a&gt; for more information. For more information about the ROSAT All Sky Survey, see the ROSAT All Sky Survey page at &lt;a href="http://www.xray.mpe.mpg.de/cgi-bin/rosat/rosat-survey"&gt;http://www.xray.mpe.mpg.de/cgi-bin/rosat/rosat-survey&lt;/a&gt;. This database table was created at the HEASARC in March 2002, based on information provided by Max-Planck-Institut fuer extraterrestrische Physik at &lt;a href="http://wave.xray.mpe.mpg.de/"&gt;http://wave.xray.mpe.mpg.de/&lt;/a&gt;. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 7 4008 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 Occultation measurement and covers the time 2019-05-18T02:15:00.000 to 2019-05-18T04:05:00.000.

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Organization: National Aeronautics and Space Administration
VLA Survey of Chandra Deep Field South

This table contains some of the results from 20 and 6 cm VLA deep observations of the Chandra Deep Field-South (CDF-S), including the Extended CDF-S (E-CDF-S). In the reference paper, the authors discuss the radio properties of 266 cataloged radio sources, of which 198 are above a 20-cm completeness level reaching down to 43 microJanskies (&micro;Jy) at the center of the field. Survey observations made at 6 cm over a more limited region cover the original CDF-S to a comparable level of sensitivity as the 20-cm observations. Of 266 cataloged radio sources, 52 have X-ray counterparts in the CDF-S and a further 37 have counterparts in the E-CDF-S area not covered by the 1 Ms exposure. Using a wide range of material, the authors have found optical or infrared counterparts for 254 radio sources, of which 186 have either spectroscopic or photometric redshifts. Three radio sources have no apparent counterpart at any other wavelength. Measurements of the 20-cm radio flux density at the position of each CDF-S X-ray source detected a further 30 radio sources (not included in this table) above a conservative 3-sigma detection limit. X-ray and sub-millimeter observations have been traditionally used as a measure of AGN and star formation activity, respectively. These new observations probe the faint end of both the star formation and radio galaxy/AGN population, as well as the connection between the formation and evolution of stars and SMBHs. Both of the corresponding gravitational and nuclear fusion-driven energy sources can lead to radio synchrotron emission. AGN and radio galaxies dominate at high flux densities. Although emission from star formation becomes more prominent at the microJansky levels reached by deep radio surveys, even for the weakest sources, an apparent significant contribution from low-luminosity AGN as well as from star formation is still found. Notice that are 319 entries in this table corresponding to the 266 catalogued radio sources, due to the fact that some of these sources have multiple components. In such cases, the composite source as well as each of its components are listed as separate entries, e.g., source 7 which has 3 components (A, B and C) has 4 entries in this table. This table was created by the HEASARC in November 2008 based on the electronic version of Table 1 from the reference paper which was obtained from the ApJ web site. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 7 4157 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 Occultation measurement and covers the time 2020-11-26T11:12:12.399 to 2020-11-26T11:34:20.549.

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Organization: National Aeronautics and Space Administration
Vela-Carina Archive

Vela-Carina is the fourth in a series of large area projects to map selected regions of the Galactic plane using the Spitzer Space Telescope Infrared Array Camera (IRAC). The Vela-Carina project (PID=40791) (Majewski et al. 2007, Zasowski et al. 2009) extended GLIMPSE-style coverage (two 1.2 second integrations at each position) to Galactic longitudes 255◦< l < 295◦ covering 86 square degrees of the Carina and Vela regions of the Galactic plane.\n\nThe Vela-Carina Archive (VelaCarA or the “Archive”), consists of point sources with a signal- to-noise > 5 in at least one band and less stringent selection critera than the Catalog. The photometric uncertainty is typically < 0.3 mag. The information provided is in the same format as the Catalog. The Catalog is a subset of the Archive, but note that the entries for a particular source might not be the same due to additional nulling of magnitudes in the Catalog because of the more stringent requirements.

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Organization: National Aeronautics and Space Administration
Kepler K2 Ecliptic Plane Input Catalog

Launched in 2009, the Kepler Mission is surveying a region of our galaxy to determine what fraction of stars \nin our galaxy have planets and measure the size distribution of those exoplanets. \nAlthough Kepler completed its primary mission to determine the fraction of stars that have planets in 2013, \nit is continuing the search, using a more limited survey mode, under the new name K2. \n\nThe K2 Ecliptic Plane Input Catalog is the primary source of information about \nobjects observed as potential targets for the K2 mission, as the Kepler Input Catalog was used for the original Kepler mission.

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P OSINAC 4 EXT1-MTP026 RDR-INF-REFL V1.0

This CODMAC level 4 data set contains solar stray-light corrected, in-field stray-light corrected,  radiometric calibrated and geometric distortion corrected  (resampled) image data in reflectance units (normalized  and thus without unit),  acquired by the OSIRIS Narrow Angle Camera on the Rosetta spacecraft  during the ROSETTA EXTENSION 1 mission phase, covering the period  from 2016-02-09T23:25:00.000 to 2016-03-08T23:24:59.000. The prime target is comet 67P/Churyumov-Gerasimenko 1 (1969 R1). This version V1.0 is the first version of this dataset: Lien corrected dataset after September 2019 PSA/PDS external peer review.

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Organization: National Aeronautics and Space Administration
SHELA Epoch 1 IRAC Catalog

The Spitzer/HETDEX Exploratory Large-Area (SHELA) survey covers ~24 sq. deg at 3.6 and 4.5 microns. The survey area falls within the footprints of the Sloan Digital Sky Survey "Stripe 82" region, the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX), and the Dark Energy Survey. The images and catalogs are 80% (50%) complete to limiting magnitudes of 22.0 (22.6) AB mag in the detection image, which is constructed from the weighted sum of the IRAC 3.6 and 4.5 micron images. The catalogs reach limiting sensitivities of 1.1 microJy at both 3.6 and 4.5 microns (1#, for R = 2" circular apertures).

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Organization: National Aeronautics and Space Administration
Lynds Catalog of Dark Nebulae

This catalog is an updated version of the original version of the Lynds&#39; Catalog of Dark Nebulae that was published in 1962. The catalog was based on a study of the red and blue prints of the National Geographic - Palomar Observatory Sky Atlas. The catalog contains positions for the centers of dark nebulae or clouds found by Lynds, values for the cloud sizes in square degrees, visual estimates of their opacity, and cross-identifications to Barnard Objects which are associated with the tabulated clouds. This HEASARC version of the LDN Catalog was created in June 1997. It was derived from &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/7A"&gt;CDS Catalog VII/7A&lt;/a&gt; obtained from &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/7A/"&gt;https://cdsarc.cds.unistra.fr/ftp/cats/VII/7A/&lt;/a&gt;. Please refer to the CDS &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/7A/ReadMe"&gt;&quot;Historical Notes&quot;&lt;/a&gt; for details regarding the lineage of this version. Additional information provided in the HEASARC documentation was taken from the original published version of this catalog. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
XMM-Newton Optical Monitor Chandra Deep Field-South UV Catalog

The XMM-Newton X-ray observatory has performed repeated observations of the Chandra Deep Field-South (CDFS) in 33 epochs (2001 - 2010) through the XMM-CDFS Deep Survey (Comastri et al. 2011, A&amp;A, 526, L9). During the X-ray observations, the XMM-Newton Optical Monitor (XMM-OM) targeted the central 17 x 17 arcmin&lt;sup&gt;2&lt;/sup&gt; region of the X-ray field of view, providing simultaneous optical/UV coverage of the CDFS. The resulting set of data can be taken into account to build an XMM-OM catalog of the CDFS, filling the UV spectral coverage between the optical surveys and GALEX observations. This table contains the UV catalog of the XMM-CDFS Deep Survey. Its main purpose is to provide complementary UV average photometric measurements of known optical/UV sources in the CDFS, taking advantage of the unique characteristics of the survey. The data reduction is intended also to improve the standard source detection on individual observations, by cataloguing faint sources through the stacking of their exposure images. The authors reprocessed the XMM-OM data of the survey and stacked the exposures from consecutive observations using the standard SAS tools to process the data obtained during single observations. Average measurements of detections with SAS good quality flags from individual observations and from stacked images have been joined to compile the catalogue. Sources have been validated through the cross-identification within the ESO Imaging Survey (EIS: Arnouts et al. 2001, A&amp;A, 379, 740) and COMBO-17 (Wolf et al. 2004, A&amp;A, 421, 913; 2008, A&amp;A, 492, 933) surveys. Photometric data of 1129 CDFS sources are provided in the main catalog, and optical/UV/X-ray photometric and spectroscopic information from other surveys are also included. The stacking extends the detection limits by ~1 mag in the three UV bands, contributing 30% of the catalogued UV sources. The comparison with the available measurements in similar spectral bands confirms the validity of the XMM-OM calibration. The combined COMBO-17/X-ray classification of the &quot;intermediate&quot; sources (e.g. optically diluted and/or X-ray absorbed AGN) is also discussed in the reference paper. This table was created by the HEASARC in June 2015 based on the union of &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJS/217/4/"&gt;CDS Catalog J/ApJS/217/4/&lt;/a&gt; files omcdfst7.dat (the 1,129 sources in the main catalog) and omcdfst8.dat (the 44 sources in the supplementary catalog). This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
AMSR-MODIS Boundary Layer Water Vapor L3 Monthly 1 degree x 1 degree V2 (AMMBLWV) at GES DISC

Version 2 is the current version of this dataset. Version 2 uses an improved methodology to screen out high clouds. This data set provides an estimate the marine boundary layer water vapor beneath uniform cloud fields. Microwave radiometry from AMSR-E and AMSR-2 provides the total column water vapor, while the near-infrared imagery from MODIS provides the water vapor above the cloud layers. The difference between the two gives the vapor between the surface and the cloud top, which may be interpreted as the boundary layer water vapor.

Tags: earth-science-atmospheric-water-vapor-atmosphere
Organization: National Aeronautics and Space Administration
Chandra Deep Field South AGN Spectral Properties Catalog

This table contains the results of a detailed X-ray spectral analysis of the sources in the 1 Ms catalog of the Chandra Deep Field South (CDFS, Giacconi et al. 2002, &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJS/139/369"&gt;CDS Cat. J/ApJS/139/369&lt;/a&gt;, available in Browse as the CHANDFS1MS table), taking advantage of optical spectroscopy and photometric redshifts for 321 extragalactic sources out of the total sample of 347 sources. As a default spectral model, the authors adopt a power law with a slope Gamma with an intrinsic redshifted absorption N&lt;sub&gt;H&lt;/sub&gt;, a fixed Galactic absorption and an unresolved Fe emission line. For 82 X-ray bright sources, they are able to perform the X-ray spectral analysis leaving both Gamma and N&lt;sub&gt;H&lt;/sub&gt; free. The weighted mean value for the slope of the power law is 1.75 +/- 0.02, and the distribution of best fit values shows an intrinsic dispersion of 0.30. The authors do not find hints of a correlation between the spectral index Gamma and the intrinsic absorption column density N&lt;sub&gt;H&lt;/sub&gt;. They then investigate the absorption distribution for the whole sample, deriving the N&lt;sub&gt;H&lt;/sub&gt; values in faint sources by fixing Gamma to be 1.8. The authors find that the fraction of absorbed sources (with N&lt;sub&gt;H&lt;/sub&gt; &gt; 10&lt;sup&gt;22&lt;/sup&gt; cm&lt;sup&gt;-2&lt;/sup&gt;) in the sample is constant (at the level of about 75%) or moderately increasing with redshift. Finally, they compare the optical classification to the X-ray spectral properties, confirming that the correspondence of unabsorbed (absorbed) X-ray sources to optical type I (type II) AGN is accurate for at least 80% of the sources with spectral identification (1/3 of the total X-ray sample). This table was created by the HEASARC in August 2007 primarily based on &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/451/457"&gt;CDS Catalog J/A+A/451/457&lt;/a&gt; file table1.dat. The positions of the X-ray sources were taken from &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJS/139/369"&gt;CDS Catalog J/ApJS/139/369&lt;/a&gt; (Giacconi et al. 2002), except for that of source number 901 which was taken from Table 5 of Szokoly et al. (2004, ApJS, 155, 271). This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
AMSR2 Daily Polar Gridded Brightness Temperatures, Version 1

The AMSR2 Daily Polar Gridded Brightness Temperatures product provides daily polar stereographic gridded daily brightness temperatures for both the Northern and Southern Hemispheres. This data product will be a replacement product for NSIDC-0080 with AMSR2 input instead of SSMIS.

Tags: earth-science-microwave-spectral-engineering-brightness-temperature
Organization: National Aeronautics and Space Administration
47 Tuc Globular Cluster Chandra X-Ray Point Source Catalog (2017 Version)

The authors combined Chandra ACIS observations of the globular cluster 47 Tucanae (47 Tuc) from 2000, 2002, and 2014-2015 to create a deeper X-ray source list and study some of the faint radio millisecond pulsars (MSPs) present in this cluster. This work combined 180 ks of new Chandra ACIS data on 47 Tuc with 370 ks of archival data and used improved algorithms to generate a new source catalog, finding 81 new sources for a total of 370 within the half-mass region (2.79 arcsec) of the cluster. The majority of the newly identified sources are in the crowded core region, indicating cluster membership. The authors associated five of the new X-ray sources with chromospherically active BY Dra or W UMa variables identified by Albrow et al. (2001, &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/ApJ/559/1060"&gt;CDS Cat. &lt;J/ApJ/559/1060&gt;&lt;/a&gt;). See also the related &lt;a href="gc47tuccxo.html"&gt;2005 source catalog&lt;/a&gt;. This table was created by the HEASARC in September 2020 based upon the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/472/3706"&gt;CDS Catalog J/MNRAS/472/3706&lt;/a&gt; files table2.dat, table4.dat, and table5.dat. The optical names from Albrow et al. (2001) were subsequently corrected in October 2020 in order to use the recommendation from the CDS Dictionary of Nomenclature of Celestial Objects. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P/CAL ALICE 4 ESC4 V2.0

This data set contains CODMAC Level 4 data acquired by the Rosetta Orbiter ALICE UV Spectrometer during the comet 67P/Churyumov-Gerasimenko Comet Escort 4 mission phase, which took place between 2015-10-22 and 2015-12-31. The current V2.0 data set supersedes the previous V1.0 data set with improved browse products and documentation.

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Organization: National Aeronautics and Space Administration
Palomar-Green Catalog of UV-Excess Stellar Objects

The Palomar-Green Catalog of UV-Excess Stellar Objects provides positions (the original_ra and original_dec parameters) accurate to about 8 arcsec in each coordinate, photographic B-magnitudes accurate to 0.29 mag, spectral types, some cross-references, and photoelectric broad-band, multichannel, and Stroemgren colors when available. Of the 1874 objects in the catalog as published in 1986 (1878 in this version), 1715 comprise a statistically complete sample covering 10714 square degrees from 266 fields taken on the Palomar 18-inch Schmidt telescope. Limiting magnitudes vary from field to field, ranging from 15.49 to 16.67. The overall completeness is estimated to be 84%, but that figure and the relative contributions of magnitude, color, and accidental errors vary depending on the magnitude and color distribution of the spectroscopic subsample. The dominant population in this catalog is that of the hot, hydrogen-atmosphere subdwarfs, the sdB stars, which comprise nearly 40 per cent of the sample. The hot white dwarfs of spectral types DA, DB, and DO account for 21, 2.8, and 1.0 per cent of the sample, respectively, while cooler DC or DZ white dwarfs add another 1.2 per cent. Cataclysmic variables and composite-spectrum binaries account for 5 per cent, although many other spectra dominated by a hot star showed evidence for a cool companion at red wavelengths. Planetary nebulae central stars account for another 0.5 per cent. Extragalactic objects comprise about 9 per cent of the complete sample, with QSOs representing 5.4 per cent. Only 0.3 per cent (6 objects) remain with totally unsatisfactory or unknown spectral classes. (Notice that all of these percentage estimates are based on the published version of this catalog, and that the values in the current online version may be slightly different, as the latter includes a small number of updates and additions). In 2009, an additional data resource was added to this catalog by CDS, namely a file containing more accurate (sub-arcsecond) positions and V magnitudes (the skiff_vmag parameter), and also additional comments (the skiff_comments parameter). This new material has now been included in the HEASARC version of the PG Catalog. A full discussion of this addition can be found at &lt;a href="http://cdsarc.u-strasbg.fr/ftp/cats/II/207A/pg_2009.txt"&gt;http://cdsarc.u-strasbg.fr/ftp/cats/II/207A/pg_2009.txt&lt;/a&gt;. This database was initially made available at the HEASARC in June 1998 based on the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/II/207A"&gt;CDS catalog II/207A&lt;/a&gt; file catalog.dat which had been last updated on Oct 17 1997. In 2017, the HEASARC re-ingested this CDS catalog as it had been updated several times in the interim, notably in 2009 when an additional file (pg_pos.dat) with precise coordinates and comments provided by Brian Skiff was added. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration