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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
2,948 datasets
40% of the cataloged objects were dwarf novae as of December 2000, with another 30% being novae. This catalog from NASA HEASARC contains data for objects classified as cataclysmic variables (CVs), including coordinates, variability type, magnitude range, and orbital periods. The final edition was updated in February 2006 and is based on the Catalog and Atlas of Cataclysmic Variables published in 2001.
108 X-ray point sources detected within the D25 ellipse of the spiral galaxy M 101 by XMM-Newton, with multiwavelength cross-correlations identifying counterparts. The catalog classifies sources into categories like X-ray binaries, supernova remnants, and supersoft sources, and analyzes their spectral, timing, and variability properties. The dataset was produced by the National Aeronautics and Space Administration and last updated in March 2026.
NASA's XMM-Newton observatory Optical Monitor (OM) catalog contains entries for every source detected in publicly available imaging-mode data. The catalog covers roughly 0.5% of the sky across 3425 fields as of early 2014, with data recorded simultaneously with X-ray observations. This version, XMMOMCAT, was generated by the HEASARC in February 2014, featuring improved coordinates and a consolidated row-per-object structure.
415 X-ray sources were identified from two Chandra-ACIS observations of the IC 1396A region, taken in March and June 2010. The catalog combines X-ray data with optical and infrared surveys to identify over 250 young stars, doubling the previously known population. The dataset was produced by the National Aeronautics and Space Administration and last updated in March 2026.
Over a thousand ultraviolet variable sources were discovered in ~40 deg² of GALEX Time Domain Survey images observed with a 2-day cadence over ~3 years. The catalog, created by NASA, classifies sources as active galaxies, variable stars, and transients, providing statistical properties of UV variability. The table includes field centers, Galactic extinction values, and epoch counts as listed in the reference paper.
233 matched sources link the Australia Telescope 20-GHz survey with the Fermi-LAT 1-year Point Source Catalog to investigate radio-gamma-ray relationships in extragalactic objects. The catalog covers 6.0 steradians of the southern sky (Declination < 0 degrees) and was created by NASA HEASARC in August 2010. Monte Carlo tests indicate at least 95% of the associations are genuine, and the data reveals a trend of increasing gamma-ray flux with higher 20 GHz radio flux.
Over 11 years of operation from December 2002 to January 2014, the INTEGRAL satellite's IBIS telescope performed an all-sky survey at energies above 100 keV. The resulting catalog contains 132 known X-ray sources, with a statistical sample of 88 sources detected above 5 sigma significance in the 100-150 keV band. The data was compiled by the National Aeronautics and Space Administration (NASA).
39,716 galaxy clusters identified in the redshift range 0.05 < z < 0.6 using photometric redshifts from the Sloan Digital Sky Survey Data Release 6. The catalog, created by NASA HEASARC in August 2009, provides richness, summed luminosity, and galaxy counts for clusters, with properties tightly related to X-ray luminosity and temperature.
339 X-ray sources were cataloged from observations by the Uhuru satellite between 1970 and 1973. The catalog includes positional error boxes, intensities, and cross-identifications with optical and radio counterparts. NASA's HEASARC created this online version in 2003, based on the original published catalog.
165 discrete X-ray sources resolved in the elliptical galaxy NGC 4649 (M 60) by a Chandra observation. The catalog was created by NASA HEASARC in April 2007 based on a 2000 observation with a 36,780-second exposure. The sources are likely low-mass X-ray binaries, and their luminosity function is described by a broken power law.
6,371 quasars from the Sloan Digital Sky Survey Data Release 3 were matched with UV observations from the Galaxy Evolution Explorer General Data Release 1. The catalog, created by NASA HEASARC in October 2009, contains 5,380 near-UV detections and 3,034 objects with both near-UV and far-UV detections, covering a redshift range up to z ~ 3.4. It provides spectral energy distributions from ~350 to 9000 Angstroms in the rest frame, enabling analysis of UV-optical color properties and luminosity trends.
A catalog of 696 low-extinction stars in the Orion Nebula Cluster, compiled from a 63 ks Chandra HRC-I X-ray observation and 17 multi-wavelength source catalogs. The table includes stellar parameters like mass, age, rotational period, X-ray luminosity (L_X), and the ratio L_X/L_bol. NASA HEASARC created this table in March 2007 based on data from the reference paper.
150-MHz observations from the Giant Metrewave Radio Telescope characterize foregrounds for detecting the redshifted 21-cm signal from the Epoch of Reionization. The catalog for the most sensitive field (Field I) contains sources to a limiting flux of 9 mJy, with an rms noise of 1.3 mJy beam⁻¹. NASA HEASARC created this table in September 2013 based on data from a 9.8-hour observation made on 2008 January 8.
A catalog of 610 radio sources detected in the Taurus-Auriga star-forming complex using the Karl G. Jansky Very Large Array. The data includes 59 sources related to young stellar objects and 18 to field stars, with observations conducted at 4.5 GHz and 7.5 GHz across three periods in 2011. The study was published by researchers and the dataset is hosted by the National Aeronautics and Space Administration.
ATLAS Refcat2 is a reference catalog of approximately one billion stars assembled to calibrate astrometry and photometry for the Asteroid Terrestrial-impact Last Alert System (ATLAS). The catalog aims for at least 99% completeness to magnitude less than 19, incorporating data from Gaia DR2, Pan-STARRS DR1, SkyMapper DR1, and other sources. It is provided by the National Aeronautics and Space Administration and was last updated in March 2026.
The Spitzer Space Telescope Survey of the Large Magellanic Cloud Legacy Project Surveying the Agents of a Galaxy's Evolution (SAGE) traces the life cycle of observable matter. The catalog contains over 6 million sources, including approximately 150,000 evolved stars and 50,000 young stellar objects, observed at 24 microns. It was produced by the National Aeronautics and Space Administration and last updated in March 2026.
Over 900 X-ray sources detected within 20 arcminutes of the NGC 2244 cluster center using the Chandra observatory. This catalog, created by NASA HEASARC in July 2008, includes optical/NIR counterparts and supports analysis of the cluster's stellar population and structure. The data suggests a total population of about 2000 stars in this 2 million-year-old cluster.
Version 2.3 of the Midcourse Space Experiment (MSX) Point Source Catalog supersedes the 1999 release and contains 100,000 more sources. The catalog was created by NASA HEASARC from the CDS Catalog V/114 to complete the mid-infrared (4.2-25 micron) sky census, covering areas missed by IRAS and the Galactic Plane. It is based on co-added image plates for improved sensitivity and has astrometric accuracy more than 1" better than the previous version.
84 compact X-ray sources were identified in the Seyfert 2 galaxy NGC 1068 from a 50-ks Chandra observation. The catalog, published by NASA, includes spectral modeling for 21 sources and identifies five intermediate-luminosity X-ray objects (IXOs) with luminosities exceeding 10^39 ergs/s. The data was last updated in March 2026.
NASA's Chandra X-Ray Observatory imaged the elliptical galaxy NGC 4365 on 2001 June 23 for a live exposure of 40429 seconds. The HEASARC created this table in June 2018, presenting 99 resolved X-ray sources, most identified as low-mass X-ray binaries associated with the galaxy.