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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
3,259 datasets
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.
1,450 primary candidates with FUV < 18.5 magnitude were identified using GALEX UV and WISE near-IR color selection. The survey obtained discovery spectra for 1,040 candidates, confirming 86% as AGN and reporting 217 new AGN with no prior spectroscopic redshifts. This first data release from the UV-Bright Quasar Survey (UVQS) was produced by NASA and is hosted by the Mikulski Archive for Space Telescopes (MAST).
189 radio sources were detected in the Ophiuchus star-forming complex using the Karl G. Jansky Very Large Array (JVLA) at 4.5 and 7.5 GHz. The catalog includes 56 sources associated with known young stellar objects (YSOs), 4 with extragalactic objects, and 129 unclassified sources likely to be background quasars. Observations were conducted by the National Radio Astronomy Observatory (NRAO) in three epochs during 2011, achieving high-resolution (~1 arcsecond) and deep sensitivity (~20 μJy).
Observations from 1994 to 2001 with the Australia Telescope Compact Array compiled a homogeneous radio-selected catalog of over 2000 sources. The mosaic image covers 4.56 square degrees, reaching a sensitivity of 12 microJy rms noise, and was produced by NASA. The catalog is intended for investigating star formation evolution across the redshift range 0 < z < 1.
The Galactic Plane survey covers a galactic latitude range of |b| < 5 degrees and a longitude range of -15 degrees < l < 255 degrees, representing 0.82 steradian (6.5%) of the sky. This table contains a source list of objects brighter than 0.9 Jy at 8.35 GHz and 2.5 Jy at 14.35 GHz, created by the NASA HEASARC in December 2004 based on CDS catalog data. Observations were conducted using the National Radio Astronomy Observatory-NASA Green Bank Earth Station.
The Spitzer Space Telescope SAGE Legacy Project surveyed the Large Magellanic Cloud to trace the life cycle of matter driving galactic evolution. The project revealed over 6 million sources, including approximately 150,000 evolved stars and 50,000 young stellar objects. This full list contains all extracted sources from the 70-micron mosaics, including potential spurious detections.
122 X-ray sources detected in the 0.5-8 keV band within a 17' x 17' Chandra ACIS-I image of the ELAIS N1 region. This table contains results from deep combined observations with the Spitzer and Chandra telescopes, cross-correlating 102 infrared sources from the Spitzer Wide-Area Infrared Extragalactic Survey (SWIRE) with X-ray counterparts. The data were collected by NASA's Spitzer telescope in early 2004 and the Chandra X-ray Observatory for 75 ks, aiming to study active galactic nuclei and the cosmic infrared background.
A catalog of 677 galaxy cluster candidates selected via the Sunyaev-Zel'dovich (SZ) effect signature from 2500 square degrees of South Pole Telescope (SPT) data, completed in 2011. The sample includes 415 clusters first identified by SPT, with 251 new discoveries, and has a median redshift of 0.55 and a median mass of approximately 3.5x10^14 solar masses. The data was aggregated by NASA's HEASARC and last updated in March 2026.
173,044 infrared point sources detected by the Infrared Astronomical Satellite (IRAS) in unconfused regions of the sky. The Faint Source Catalog is at least 98.5% reliable at 12 and 25 microns and contains 99,973 sources not found in the more reliable but less sensitive IRAS Point Source Catalog. This version 2.0 was released in September 1990 and was recreated by NASA HEASARC in August 2005.
The Lockman Hole-Northwest field survey covers a contiguous 0.4 square degrees. It contains a catalog of 525 X-ray point sources and four extended sources, with optical B, V, R, I, z' photometry for 521 sources and spectroscopic redshifts for 271 sources. The table was created by NASA HEASARC in May 2005 from merged CDS tables.
The Chandra X-Ray Observatory observed the high Galactic latitude cometary globule CG 12, detecting 128 X-ray sources. Half of these sources are likely young stars formed within the globule's head, revealing a population of over 50 T Tauri stars and one new embedded protostar. The data was collected by NASA in four observations between April and June 2006.
447 galaxy clusters form the largest statistically complete X-ray flux-limited sample, selected from the ROSAT-All Sky Survey and spectroscopically confirmed by ESO. The catalog provides X-ray properties, redshifts, and identification details for clusters in a 4.24 steradian area of the southern sky. NASA HEASARC created this table in October 2004 based on data from the Centre de Données astronomiques de Strasbourg.
4408 radio sources detected at 1.4 GHz across 690 square degrees of sky. The catalog, created by NASA HEASARC in 2010 from a 12-epoch survey, has a 5-sigma sensitivity limit of 20 mJy beam⁻¹ and was designed to verify the ATA's mosaic capabilities and detect bright transients.
A catalog of 567 classified blazar candidates of uncertain type detected by the Fermi Large Area Telescope. The classifications were determined by an optimized Artificial Neural Network method, increasing performance by about 80% over a previous method and leaving only 15 sources unclassified from an original pool of 573. The table, ingested by NASA HEASARC in May 2023, orders sources by increasing likelihood of being a BL Lac type.
58 X-ray sources were resolved in the lenticular galaxy NGC 4382 during a 39,749-second observation by the Chandra X-Ray Observatory on 2001 May 29-30. The catalog, created by NASA HEASARC in June 2018, presents results where 22% of counts within two effective radii were resolved sources, 33% were unresolved LMXBs, and 45% were diffuse gas. This table includes defined hardness ratios (HR21, HR31) for source classification across soft, medium, and hard energy bands.
A paper by Hontas Farmer of Malcolm X College resolves the black hole firewall debate by computing the temperature of a Planck mass black hole. The work predicts the Hawking radiation temperature for a quantum collapsing into such a black hole. The temperature is calculated to be 1.410 septillion Kelvin, lasting for about one Planck time.