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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
3,258 datasets
A new reduction of Hipparcos satellite data claims accuracies up to four times better for stars brighter than magnitude 8.0 compared to the original 1997 catalog. The catalog provides improved astrometric data, including parallaxes and proper motions, for studies of stellar luminosities and local galactic kinematics. This version was created by NASA HEASARC in August 2009 based on corrected data from the CDS Catalog I/311.
INTEGRAL satellite observations over 4 years detected 499 sources of soft gamma-ray and X-ray emission above 20 keV. The catalog, created by NASA HEASARC in 2011, provides precise coordinates, source classifications, and parameters like absorption, distances, and pulsation periods. It includes around 250 sources that were new or unknown at these energies at the time of discovery.
370 X-ray point sources from the ROSAT All-Sky Survey in two 10-degree by 10-degree fields, one at high galactic latitude (26 Com) and one at low (gamma Sge). The catalog was created by NASA/HEASARC in 2015 based on a reference paper that used optical variability from archival plates to identify 256 probable optical counterparts. The identified sources include 126 active galactic nuclei, 17 galaxy clusters, 16 eruptive double stars, and 43 chromospherically active stars.
A catalog of 5263 radio sources detected at 325 MHz by the Giant Metrewave Radio Telescope (GMRT). The survey covers approximately 90 square degrees of sky across three equatorial fields from the Herschel-ATLAS and GAMA surveys. This table was created by NASA's HEASARC in December 2013 based on source lists from a reference paper.
The South Pole Telescope Sunyaev-Zeldovich Survey Point Source Catalog (2020) contains 4,845 emissive point sources detected at 4.5 sigma or greater significance across a 2,530 square degree area of the southern sky. The National Aeronautics and Space Administration (NASA) published this catalog, which classifies sources into 3,980 synchrotron-dominated and 865 dust-dominated populations, including 506 candidate submillimeter galaxies. Observations were conducted between 2008 and 2011 using the 10-meter South Pole Telescope at 95, 150, and 220 GHz frequencies.
SWIN files contain the raw VLBI fringe visibilities from observing sessions that are 24 hours or 1 hour long. These files are the output of the Distributed FX-style (DiFX) software correlator run by the International VLBI Service for Geodesy and Astrometry (IVS). The data form the basis for fringe fitting in geodesy and can also be used to create source maps of observed quasars.
Richard Goodman from IAOM authored a dataset on network spectrum calculus. The dataset, last updated on July 11, 2026, likely contains data for analyzing propagation, stability, and certification in networks. Its specific scale, format, and content require inspection after download.
Time-averaged intensity spectra for dry-O2 absorption at 1270 nm. The data includes CSV files of time-stamped fit parameters for each spectrum, associated meteorology, and instrument conditions, as well as tabulated absorption feature residuals and x-y data for accompanying figures. The dataset was contributed by author Nathan Malarich on the paperswithcode platform.
A single compound, 2-(guanidino(2-hydroxyphenyl)methyl)hydrazine carbothioamide (GHC), was synthesized and characterized by Mashood F. M. Ahamed. The dataset contains spectroscopic characterization data, experimental results for antimicrobial and α-amylase inhibitory activity, and computational modeling outputs. The data was published on April 7, 2026.
Oligonucleotide sequences used for RT-qPCR analysis are provided in a 9.5 KB XLS file. The dataset was authored by Montserrath Abigail León Flores and last updated on May 28, 2026. Its specific application and the number of primer sequences are not detailed in the available metadata.
A supervised, probabilistic taxonomic classification for the full Gaia Data Release 3 asteroid sample. The dataset models spectral class likelihoods using multivariate kernel density estimation on principal components derived from Gaia DR3 reflectance spectra. It was created by Marco Delbo and published on the figshare platform in April 2026.
The Milky Way Globular Clusters Catalog (December 2010 Version) is a compilation of parameters for 157 objects classified as globular clusters, compiled by William E. Harris of McMaster University. It contains basic parameters on distances, velocities, metallicities, luminosities, colors, and dynamical parameters. This version is the first major update since 2003 and was last updated by NASA HEASARC in February 2014.
A catalog of optical and near-infrared counterparts for X-ray sources detected in the Extended Chandra Deep Field-South. The table includes new spectroscopic redshifts for 283 counterparts, bringing the total number of spectroscopically identified X-ray sources to over 500 in this field. NASA HEASARC created this online catalog in November 2010 based on data from a published astrophysical journal paper.
NASA HEASARC provides a catalog of 534 faint objects detected jointly in the Extreme Ultraviolet Explorer (EUVE) and ROSAT X-ray Telescope all-sky surveys. The joint detection method used a low count rate threshold, revealing 166 new EUV sources not in previous catalogs, with preliminary identifications for 105 of these new sources. This browse table was created in July 2003 based on data from the CDS.
A continuously updated database table listing Galactic stars known or suspected to be variable, maintained by the NASA HEASARC. It originated from the General Catalogue of Variable Stars and the New Catalogue of Suspected Variables, and has been supplemented with numerous other catalogues and individual discoveries. The HEASARC version is updated within a week of changes to the source CDS catalog.
NASA HEASARC provides the HEAO 1 A-2 Piccinotti Catalog, a flux-limited sample of 68 non-galactic X-ray sources from a 1977-1979 sky survey. The catalog covers 65.5% of the sky, excluding the galactic plane, and lists 61 identified extragalactic sources and 7 unidentified ones. Data collection occurred during two independent scans in 1977-1978, with sources detected at a minimum statistical significance of 5 sigma.
NASA HEASARC provides a catalog of 246 X-ray point sources detected in the nearby radio galaxy Centaurus A (NGC 5128) from two Chandra observations in 1999 and 2000. The table includes sources detected above a limiting luminosity of ~2 x 10^36 ergs/s, with 82 sources confirmed in both overlapping observations. This catalog was created in February 2007 based on data from the Chandra ACIS-I array.
Nearly 1,000 hard X-ray sources from over 2 square degrees of Chandra images have optical counterparts or flux limits derived from R-band imaging. Optical spectra for 477 counterparts provide identifications and redshifts for 438 sources, with redshifts ranging from 0.1 to 4.33. This table combines data from the SEXSI program's optical follow-up studies published in 2005 and 2006 by NASA HEASARC.
99.5% reliable point sources from the Spitzer Space Telescope's Vela-Carina Galactic plane survey. This catalog covers 86 square degrees of the Carina and Vela regions, applying a '2+1' detection criterion across IRAC bands and 2MASS Ks. NASA produced the data, which was last updated in March 2026.
The ChaMP Extended Stellar Survey (ChESS) X-Ray Catalog contains 348 X-ray-emitting stars identified by NASA HEASARC. The catalog was created by correlating archival X-ray images from the Chandra Multiwavelength Project with optical data from the Sloan Digital Sky Survey, using morphological and photometric cuts to isolate stellar sources. This table was created by the HEASARC in January 2009 based on data from a published reference paper.