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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
2,941 datasets
NASA HEASARC provides a catalog of spectroscopic identifications for 77 bright, soft X-ray sources from the ROSAT All-Sky Survey. The table contains identifications for 70 sources, with 5 identified by other means, and presents subsidiary information for 2 unidentified sources. The largest source classes are Seyfert 1 galaxies, magnetic cataclysmic variables, and hot white dwarfs.
The Arcminute Microkelvin Imager (AMI) Galactic Plane Survey provides arcminute-resolution images of the outer Galactic plane at milli-Jansky sensitivity. This first data release catalog contains 3,503 radio sources detected above 5 sigma from 868 square degrees of sky, observed at a central frequency of 15.75 GHz. The NASA HEASARC ingested this catalog in 2013 based on data from the CDS.
8,479 bright M dwarf stars form the most complete collection of K < 9th magnitude M dwarfs currently available. The catalog was created by NASA HEASARC in 2015, combining new candidates from the PPMXL catalog with previous work for future exoplanet transit studies. It includes 1,193 new bright M dwarf candidates not in earlier catalogs, identified using optical/NIR color and reduced proper motion cuts.
The Faint Sky Variability Survey Catalog contains a sample of 598 galaxy clusters and rich groups identified from the FSVS data. The clusters were discovered using an automated, semi-parametric technique based on maximum likelihood applied to Voronoi tessellation and enhanced by color discrimination. The table was created by NASA's HEASARC in July 2006 based on the original author's data.
106 X-ray point sources detected in the interacting galaxy pair NGC 1512/NGC 1510 by the XMM-Newton space telescope. The catalog was produced by NASA using a single 63-ks observation on 2012 June 16-17, with sources classified via spectral analysis and cross-correlation with optical, infrared, and radio catalogs. It includes 15 sources within the galaxies' D25 regions and characterizes diffuse emission from NGC 1512.
100 compact groups of galaxies were identified from a systematic search of the Palomar Observatory Sky Survey. The catalog includes dynamical parameters for 92 of the groups and was created by NASA HEASARC based on tables from the ADC/CDS data centers, with refinements made in 2005. This database table contains the information from key 1982 and 1992 astrophysical journal publications.
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.
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 Ξ±-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 LeΓ³n Flores and last updated on May 28, 2026. Its specific application and the number of primer sequences are not detailed in the available metadata.
Prydz Bay region in East Antarctica is the focus of this dataset. It likely contains results from ice-sheet numerical modeling investigating topographic controls on ice dynamics changes from the Oligocene to the Pleistocene. The dataset originates from the Australian Ocean Data Network.
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.