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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
2,942 datasets
SPIDERS provides spectroscopic classifications and redshifts for X-ray sources, representing the largest systematic spectroscopic observation of an X-ray selected sample. The catalog contains 11,092 observed spectra drawn from a parent sample of 14,759 ROSAT and XMM sources over 5,129 square degrees. It was created by NASA HEASARC in May 2020 based on SDSS-IV/BOSS observations taken between 2014 and 2019.
Version 2.1 of the Bolocam Galactic Plane Survey includes improved millimeter-wave images and an associated source catalog. The catalog has about a 75% overlap with the previous v1 release, with differences primarily among faint, low signal-to-noise sources. NASA released this updated version, which corrects a flux calibration error from v1, making sources on average brighter by approximately a factor of 1.5.
COMPTEL low-level data and maps from the Compton Gamma Ray Observatory (CGRO) mission. The dataset is produced by NASA HEASARC and allows selection of data from the Imaging Compton Telescope, which conducted the first all-sky survey in the 0.75-30 MeV energy range. Interactions are recorded via a two-stage Compton collision process, with the instrument having a wide field of view and angular resolution under optimal conditions of about 1 degree.
NASA HEASARC provides a catalog of 19,812 point-source candidates for Quasi-Stellar Objects (QSOs) in the redshift range 0.5 to 1.5. The sample was created from a combined Sloan Digital Sky Survey and Galaxy Evolution Explorer database, with contaminants removed using a subsample of ~4,500 SDSS spectra. This table, created in March 2011 and updated in April 2018, is based on archival data from the GALEX and SDSS missions.
AXIS (An XMM International Survey) covers 4.8 square degrees in the Northern sky. The catalog contains 1433 serendipitous X-ray sources detected with 5-sigma significance, with basic data provided for 2560 sources that met selection criteria. The dataset was published by NASA and last updated in March 2026.
843 optically selected quasars with simultaneous UV/optical and X-ray observations from the Swift Gamma-ray Burst Explorer. The catalog was compiled by NASA by matching Swift pointings with the Sloan Digital Sky Survey DR5 quasar catalog, with 354 objects having full spectral energy distributions. The data was last updated in March 2026.
A catalog of 140 X-ray sources detected by the XMM-Newton telescope during a 67 ks observation of a ~0.2 deg² field in Selected Area 57. The data, created by NASA HEASARC in September 2007, includes limiting fluxes of 5e-16 and 2e-15 erg/cm²/s in two energy bands and optical identifications for 98 sources. It was compiled to study the X-ray and optical properties of Active Galactic Nuclei, particularly low-luminosity ones.
The IRAS Point Source Catalog Redshift Survey provides data for 18,351 infrared sources across 84% of the sky with low extinction. It contains redshifts for 14,677 galaxies, infrared and optical photometry, and over 120 parameters per source, compiled by NASA HEASARC based on CDS Catalog VII/221. The catalog was designed to include nearly all galaxies brighter than 0.595 Jy at 60 microns within its coverage area.
A study of water quality, sediment composition, and metabolic processes in three tidal creeks in Darwin Harbour, Australia, receiving different sewage discharge loads. The dataset likely contains measurements from three field surveys comparing nutrient transformation and retention in hypertrophic, oligotrophic-mesotrophic, and pristine reference creeks. It was published by Geoscience Australia Data and was last updated on 2026-04-30.
The Bolocam Galactic Plane Survey Version 2 (BGPS v2) includes millimeter-wave images and an associated source catalog, released by the National Aeronautics and Space Administration. The v2 release features improved image fidelity, more uniform noise, and expanded coverage in both the inner and outer galaxy, including regions like M17 and Orion. The catalog, extracted using the Bolocat algorithm, has about a 75% overlap with the prior v1 catalog, and flux calibration errors from v1 have been corrected.
NASA's HEASARC table contains the primary sample from a 2012 study investigating X-ray properties of quasars. The catalog includes 654 optically selected radio-intermediate and radio-loud quasars with observations from SDSS, FIRST, and archival X-ray data from Chandra, XMM-Newton, and ROSAT. It provides broad coverage of the luminosity-redshift plane, with 22% of objects at high redshifts (z=2-5) and an 84% X-ray detection rate.
NASA HEASARC provides the SPIDERS X-Ray Point Source Spectroscopic Catalog from the SDSS-IV program. It contains 11,092 observed spectra from a parent sample of 14,759 ROSAT and XMM sources over 5,129 square degrees, with 10,970 objects classified and 10,849 having secure redshifts. The catalog was created in May 2020 based on observations taken between 2014 and 2019.
Deep radio observations of the Hubble Deep Field-South region were performed by the Australia Telescope Compact Array from 1998 to 2001. The catalog, created by NASA HEASARC in 2012, contains 473 individual sources with flux densities and spectral indices at four frequencies (1.4, 2.5, 5.2, and 8.7 GHz). It consolidates data from multiple published papers to provide a sensitive multi-frequency view of the region.
The CGRO/EGRET Revised Catalog lists 188 point gamma-ray sources detected at energies above 100 MeV by the Compton Gamma Ray Observatory. NASA's HEASARC created this version in March 2009, which revises a prior catalog by applying new Galactic emission models and a maximum-likelihood detection method. It includes 1640 entries representing multiple observations of the sources.
NASA HEASARC provides a catalog of 19,637 X-ray detections from 4,330 unique sources, classified by the XMM Newton observatory. The authors classified sources into stars, active galactic nuclei (AGNs), and compact object systems based on X-ray-to-IR flux ratios, spectral properties, and variability. This table was created by the HEASARC in October 2012 based on data from a reference paper published in the Astrophysical Journal.
From 2008 August 4 to 2011 August 1, the Fermi Large Area Telescope (LAT) collected gamma-ray data above 10 GeV. The resulting catalog (1FHL) contains 514 sources, with 449 (87%) associated with known objects, including 393 active galactic nuclei and 27 pulsars. This table was created by NASA HEASARC in April 2015 based on data from the Fermi Gamma-ray Space Telescope mission.
The COSMOS survey covers a 1.4 by 1.4 degree equatorial field. This catalog contains 3,643 radio sources detected at 1.4 GHz with a signal-to-noise threshold >= 4.5, produced by the VLA-COSMOS Large Project and created by NASA HEASARC in September 2007. Observations resulted in a resolution of 1.5" by 1.4" and a mean rms noise of ~10.5 μJy in the central area.
267 Swift XRT X-ray sources detected within the fields of view of 112 unidentified gamma-ray sources from the 1FGL catalog. The data includes positions and 0.3-10 keV count rates for sources with a signal-to-noise ratio of 3 or more, derived from archival analysis of 134 high-latitude sources. This table was created by NASA HEASARC in September 2014 based on a reference paper in the Astrophysical Journal Supplement.
The Sloan Digital Sky Survey Data Release 10 provides this catalog of 9,088 new spectroscopically confirmed white dwarfs and subdwarfs. The National Aeronautics and Space Administration's HEASARC created the table in October 2017 based on research published in the reference paper. It includes derived parameters like temperature, surface gravity, and mass for different atmospheric types.
NASA HEASARC provides a table of 255 spectroscopically identified Type-2 Active Galactic Nuclei from the XMM-COSMOS survey. The data includes X-ray and bolometric luminosities, stellar masses, star formation rates, and morphological classifications for 90% of the sample. This table was created in October 2011 based on a published study.