VO Fresh

AMS-02 All Particle Rates Catalog

2026-11-06T00:00:00Z

Description: The AMS02RATES database table records the incident rates for all particle species obtained with the Alpha Magnetic Spectrometer (AMS-02) experiment on the International Space Station (ISS), a cosmic ray particle detector installed in May 2011. The experiment consists of several components, which collectively measure particle species, energy, geomagnetic rigidity, or veto off-axis particles and high-energy photons. The experiment covers the energy range of ~0.1 GeV - ~2 TeV. AMS-02 is the result of a collaboration between MIT, the University of Hawaii, CERN, NASA, the U.S. Department of Energy, and ESA. It was launched on the Space Shuttle Endeavor (STS-134) on May 16, 2011 and was installed three days later at which time science operations commenced. Operations were interrupted by in-flight servicing of the cooling pumps for the silicon tracker: servicing took place between November 2019 and January 2020, after which science operations were restored. It is anticipated to continue operations for as long as the ISS itself remains functional. The rate at which all particle species are observed within a one-second time integration period is recorded for each interval, corrected for the livetime fraction. Each integration period contains the livetime value, observed rate, and the position of the AMS-02 instrument in latitude, longitude, and radius from the Earth's center in the Earth Centered Earth Fixed (ECEF) frame of reference. This database table was first ingested by the HEASARC in July 2026. The AMS-02 team in collaboration with the HEASARC developed the FITS file structure for these data which were created by the HEASARC from daily particle rate data provided by the AMS collaboration. The data and the database table are updated periodically to reflect additional data as they become available. This is a service provided by NASA HEASARC .
Author(s): HEASARC
IVOA id: ivo://nasa.heasarc/ams02rates

AMS-02 Spectral Results Catalog

2026-11-06T00:00:00Z

Description: The AMS02SPEC database table records the spectral results obtained with the Alpha Magnetic Spectrometer (AMS-02) experiment on the International Space Station (ISS), a cosmic ray particle detector installed in May 2011. The experiment consists of several components, which collectively measure particle species, energy, geomagnetic rigidity, or veto off-axis particles and high-energy photons. The experiment covers the energy range of ~0.1 GeV - ~2 TeV. AMS-02 is the result of a collaboration between MIT, the University of Hawaii, CERN, NASA, the U.S. Department of Energy, and ESA. It was launched on the Space Shuttle Endeavor (STS-134) on May 16, 2011 and was installed three days later at which time science operations commenced. Operations were interrupted by in-flight servicing of the cooling pumps for the silicon tracker: servicing took place between November 2019 and January 2020, after which science operations were restored. It is anticipated to continue operations for as long as the ISS itself remains functional. This database table was first ingested by the HEASARC in June 2026. The AMS-02 team in collaboration with the HEASARC developed the FITS file structure for these data. The data have been published in a series of papers (see bibliographic references) and archived in FITS format at the HEASARC. The data and the database table are updated periodically to reflect additional data as they becomes available. This is a service provided by NASA HEASARC .
Author(s): HEASARC
IVOA id: ivo://nasa.heasarc/ams02spec

TCO Optical Echelle Spectral Archive

2026-11-02T06:40:50Z

Description

One-dimensional reduced optical stellar spectra obtained at the Three College
Observatory (TCO) with the eShel spectrograph on the 0.81-m telescope.
This collection includes the full supplied archive, including the stars in the
separately published hot-supergiant subset and additional stellar targets.

Wavelengths are computed from the original linear IRAF WCS in Angstroms and
served in meters. Fluxes are relative; continuum normalization is recorded only
where supplied in the metadata. Resolving power R=12000 is adopted from the
existing collection documentation, not measured separately for each spectrum.

Author(s)

Danford, S.; Miroshnichenko, A.

IVOA id

ivo://fai.kz/tco_echelle_spectra/q/ssa

LINCC Frameworks - UW/Epyc - Subaru Hyper Suprime Camera Public Data Release 3 g-band

2026-10-30T15:58:48Z

Description: Hyper Suprime-Cam is a wide-field imaging camera mounted on the 8.2-meter Subaru Telescope. This catalog represents Public Data Release 3 forced photometry table for Wide survey fields in g passband. It covers ~670 square degrees with the depth of ~26 mag.
Author(s): LINCC Frameworks
IVOA id: ivo://data.lsdb/uw/hsc_pdr3_g

LINCC Frameworks - UW/Epyc - Subaru Hyper Suprime Camera Public Data Release 3 i-band

2026-10-30T15:58:48Z

Description: Hyper Suprime-Cam is a wide-field imaging camera mounted on the 8.2-meter Subaru Telescope. This catalog represents Public Data Release 3 forced photometry table for Wide survey fields in i passband. It covers ~670 square degrees with the depth of ~26 mag.
Author(s): LINCC Frameworks
IVOA id: ivo://data.lsdb/uw/hsc_pdr3_i

LINCC Frameworks - UW/Epyc - SkyMapper Data Release 4

2026-10-30T15:23:21Z

Description: The Fourth Data Release (DR4) of the SkyMapper Southern Survey (SMSS) covers 26,000 square degrees from over 400,000 images acquired by the 1.3m SkyMapper telescope between 2014-03 and 2021-09. It includes mean astrometric, photometric and shape measurements for ~700 million unique astrophysical objects from magnitude 9 to 22, taken in six optical filters: 'u', 'v', 'g', 'r', 'i', 'z'.
Author(s): LINCC Frameworks
IVOA id: ivo://data.lsdb/uw/skymapper_dr4

LINCC Frameworks - UW/Epyc - eROSITA-DE DR2 eRASS:3 Main

2026-10-30T15:21:38Z

Description: The eROSITA space X-ray telescope, operated by the German eROSITA Consortium (eROSITA-DE), has released its second data set (DR2) from the SRG/eROSITA all-sky survey. The eRASS:3 main catalogue stacks the first three survey passes over the Western Galactic Hemisphere and contains 1,975,540 X-ray sources detected with eSASS in the 0.2-2.3 keV band (detection likelihood above 6), with ML fluxes, rates and counts in the main band and nine sub-bands, corrected positions with uncertainties, extent measurements, quality flags, and cross-identifications to eRASS1, the eRASS:3 hard catalogue, 5XMM, Chandra CSC 2.1 and ROSAT 2RXS. The default column set is the 40 identifier, position, extent, main-band and flag columns; all 250 columns are available with columns='all'.
Author(s): LINCC Frameworks
IVOA id: ivo://data.lsdb/uw/erass3_main

Swift-XRT Living Point Source Catalog (LSXPS)

2026-10-30T00:00:00Z

Description: This is the Live Swift X-ray Point Source (LSXPS) catalog of detections by the Swift X-ray Telescope (XRT) used in Photon Counting (PC) mode in the 0.3-10 keV energy range. Swift is a NASA mission with international participation dedicated to studying gamma-ray bursts. It carries three instruments. The BAT is the large field-of-view instrument and operates in the 10-300 keV energy band; and two narrow field instruments, XRT and UVOT, that operate in the X-ray and UV/optical regime, respectively. This catalog is similar to the <a href="swift2sxps.html">2SXPS</a> catalog (Evans, P. A., et al. 2020, ApJS, 247, 54) and uses an almost identical source detection process. The primary change is that this is a living catalog: it is updated in near-real time and transient searches are carried out on each dataset as it is received. The improved statistics (below) compared to 2SXPS for source detections, unique and variables sources, uncatalogued sources, and temporal and total sky area coverage are a function of its ongoing live nature, compared to the static 2SXPS which was current up to 2018-08-01. On average, LSXPS grows by 49 new sources and the unique sky coverage increases 0.94 square degrees per day. This table was added to the HEASARC database in June 2026 and is based on the contents of its dedicated website at <a href="https://www.swift.ac.uk/LSXPS">https://www.swift.ac.uk/LSXPS</a>. The version available from the HEASARC corresponds to the catalog designated as "Sources" on the Leicester website and will typically be updated at the HEASARC within a day or so of a new version appearing on the Leicester website. This is a service provided by NASA HEASARC .
Author(s): Evans et al.
IVOA id: ivo://nasa.heasarc/swiftlsxps

Chandra Source Catalog Stacked Observation Detections, v2.1.1

2026-10-30T00:00:00Z

Description: The Chandra Source Catalog's Stacked Observation Detections Table (CSCSTACK) includes 493,236 detections (855,402 total entries consisting of detections plus photometric upper limits) based on 10,034 stacks of X-ray observations. Exploiting the unique resolution and very low background of Chandra data, the limiting sensitivity of the catalog is enhanced significantly by stacking (co-adding) multiple observations of the same field prior to source detection. To minimize the impact of the variation in the Chandra point spread function (PSF) with off-axis angles, source detection is constrained to run on stacks of observations that have telescope pointings that are co-located within 60 arcseconds and that were obtained using the same instrument (ACIS or HRC-I). Formally, the observations are matched using a tree clustering algorithm with complete linkage. This means that the pointing direction of every observation in the stack is co-aligned with the pointing direction of every other observation in the stack within 60 arcseconds. The stacked-observation level allows composite properties to be reported from the co-added observations for detections that would otherwise not be visible or have poor S/N in individual observations, while for higher S/N detections the per-observation properties facilitate analysis of variable sources. CSCSTACK is related to the <a href="/W3Browse/chandra/csc.html">Chandra Source Catalog (CSC)</a> catalog, which is the definitive catalog of X-ray sources detected by the Chandra X-ray Observatory. The CSC contains 407,806 unique compact and extended X-ray sources. By combining Chandra's sub-arcsecond on-axis spatial resolution and low instrumental background with consistent data processing, the CSC delivers a wide variety of uniformly calibrated properties and science ready data products for detected sources over four decades of flux. Each identified distinct X-ray source on the sky is represented in the catalog by one or more "stack detection" entries -- one for each stack in which the source has been detected -- and a single "master source" entry. The individual stack entries record all of the properties about a detection extracted from a single stack, as well as associated file-based data products, which are stack-specific. If a source is detected in one or more stacked-observations, photometric upper limits that are useful for temporal variability analyses are calculated for any overlapping stacked- and individual-observations in which the source is not detected. This database table was ingested by the HEASARC in October 2026 and is based on a download of the online version of the "Stacked Observation Detections" table, version 2.2, at the CXC using the CLI. Refer to <a href="https://cxc.harvard.edu/csc/cli/">https://cxc.harvard.edu/csc/cli/</a> for details. This is a service provided by NASA HEASARC .
Author(s): Evans, Civano
IVOA id: ivo://nasa.heasarc/cscstack