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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
2,943 datasets
H-ATLAS DR1 provides a catalog of potential optical counterparts for SPIRE-detected submillimeter sources across 161.6 square degrees of sky. The main catalog contains the 'best' candidate ID for each source, while a secondary catalog lists all possible counterparts with full likelihood ratio statistics. Users can filter for reliable optical IDs using a recommended Reliability threshold of >0.8.
867 radio sources detected at 1.4 GHz (20 cm) by the Very Large Array in C configuration, covering a total area of 4.222 square degrees. The catalog includes 921 components, with 428 sources forming a complete sample in the flux range 0.2 - 1.0 mJy, and was created to support the European Large-Area ISO Survey (ELAIS). It was published by NASA and last updated in March 2026.
1,310 radio sources detected above a 6-sigma threshold in the ELAIS-N2 field. The catalog is based on observations covering ~6 square degrees at 610 MHz with the Giant Metrewave Radio Telescope, with a resolution of 6.5 x 5 arcsec. This table was created by NASA's HEASARC in February 2012 from source data provided by the University of Cambridge Astrophysics Group.
18 distant galaxy clusters observed by the Chandra X-ray Observatory form the basis for analyzing point-source over-densities. The study finds a ~2-sigma excess of bright X-ray sources, likely AGN, within the inner 0.5 Mpc of cluster regions. This data, sourced from the NASA Chandra archive, supports investigations into source contamination of cluster emission.
373 X-ray sources were detected in the M 31 (Andromeda) galaxy disk from Chandra observations in October 2015. The catalog, created by NASA HEASARC in 2020, combines these X-ray data with Hubble Space Telescope imaging to identify 188 optical counterpart candidates. It includes 170 sources reported for the first time and provides associated star formation histories.
624 young stellar objects are identified in the high-mass star-forming region RCW 38, including 23 class 0/I and 90 flat spectrum protostars. The catalog combines Spitzer IRAC and 2MASS infrared photometry with Chandra X-ray data to classify objects by their circumstellar material. This table was created by NASA HEASARC in January 2012 based on data from a published astrophysical study.
NASA's Chandra X-Ray Observatory catalog contains 213 detected X-ray point sources from a star-forming region centered on the Herbig Be star LkH-alpha 101. The data combines 40 ks Chandra observations with near-IR data from 2MASS and Spitzer Space Telescope, identifying 158 sources with infrared counterparts. The study estimates a cluster distance of approximately 510 parsecs and a median age of about 1 million years.
111 unique X-ray point sources were identified in the Cassiopeia dwarf galaxy (IC 10) from a series of 10 Chandra ACIS-S observations spanning 2003 to 2010. The catalog, created by NASA, includes 21 sources variable at the 3-sigma level and classifies 10 strong HMXB candidates, 2 probable background AGN, and 4 foreground flare-stars. The study aimed to discover the composition of the X-ray binary population in a young starburst environment.
556 compact radio sources detected in the Orion Nebula Cluster from a 30-hour observation with the Karl G. Jansky Very Large Array in 2012. The catalog increases the known sample of compact radio sources in the region by more than a factor of seven and provides radio spectral indices for 170 sources. The table was created by NASA's HEASARC in September 2016 based on data from the National Radio Astronomy Observatory.
A catalog of stellar populations in the 30 Doradus region, also known as the Tarantula Nebula, within the Large Magellanic Cloud. The data originates from the Hubble Tarantula Treasury Project, a panchromatic imaging survey conducted by NASA using the Hubble Space Telescope. The dataset was last updated on March 13, 2026.
An updated version of the 1962 Lynds Catalog of Dark Nebulae, based on the National Geographic-Palomar Observatory Sky Atlas. This HEASARC version from June 1997 contains positions, sizes in square degrees, visual opacity estimates, and cross-identifications to Barnard Objects. It is a service provided by NASA HEASARC.
March 2007 data comprises CAIXA, the Catalog of AGN In the XMM-Newton Archive. It contains 156 radio-quiet, X-ray unobscured active galactic nuclei observed in targeted observations, forming the largest catalog of high signal-to-noise X-ray spectra of AGN. The table was created by NASA's HEASARC in March 2009 based on CDS catalog files.
The Australia Telescope National Facility Pulsar Catalog is a compilation of known pulsars, descended from the 1993 'Catalog of 558 Pulsars'. The catalog has been supplemented with data from recent radio surveys, including the Parkes Multibeam Pulsar Survey, and includes binary, astrometric, and spin parameters for pulsars. It is maintained by the HEASARC and was last revised in January 2014.
The Extrasolar Planets Encyclopedia is a working tool compiling the latest exoplanet detections announced by professional astronomers. It is maintained by Jean Schneider and updated frequently, intended to facilitate quantitative research in exoplanetology. Stellar data such as positions, distances, magnitudes, mass, and metallicities are incorporated from sources like Simbad and professional papers.
Images derived from the Event Horizon Telescope's first black hole shadow observation of M87*. The data consists of processed images from the April 11, 2019, data release, using GIMP edge filters to highlight features near the event horizon. The work was authored by Alan G mez.
P. B. Arthur Linker's paper discusses the application of E-gravity theory to high-energy physics scenarios. The work provides an approximate computation of Black Hole entropy and examines quantum fluctuations influenced by gravity. The dataset is an Open Access (diamond) publication sourced from paperswithcode.
A collection of 120 x 120 pixel FITS format maps created from 65 observations by the European Space Agency's COS-B satellite. The satellite was dedicated to gamma-ray astronomy and operated between 17 August 1975 and 25 April 1982. This database is a service provided by NASA HEASARC.
Chandra/ACIS observations from 2002 November 14 reveal dynamic interstellar medium activities in NGC 5866, a nearby edge-on S0 galaxy. This catalog lists the detected X-ray point sources, likely driven by supernova explosions, as part of a multi-wavelength study using Hubble, Spitzer, and ground-based data. The HEASARC created this table in May 2018 based on the reference paper's source list.
NASA HEASARC provides a catalog of 190 high-significance X-ray point sources in the galaxy NGC 2403, part of the Chandra Local Volume Survey. The data originates from five Chandra ACIS-S observations totaling 190 ks of exposure time, processed in September 2015. The catalog includes sources down to a limiting luminosity of ~5e35 erg/s and provides cross-correlations with optical data for preliminary source classification.
The central Galactic plane region, within |l|<~45 degrees and |b|<~0.4 degrees, was surveyed in the 0.7-10 keV energy band. The database contains a list of 163 discrete X-ray sources resolved from the Galactic ridge emission, with fluxes down to 10^-12.5 ergs/cm^2/s, as published by Sugizaki et al. in 2001. This catalog was created by NASA's HEASARC based on the ADC/CDS source.