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- ID:
- ivo://koa.ipac
- Title:
- Keck Observatory Archive
- Short Name:
- KOA
- Date:
- 26 Oct 2021
- Publisher:
- Keck Observatory Archive
- Description:
- The archive node for scientific data sets from the Keck Observatory Archive (KOA).
- ID:
- ivo://fr.oamp.lam/LAM
- Title:
- Laboratoire d'Astrophysique de Marseille
- Short Name:
- LAM
- Date:
- 04 Apr 2008 11:10:03
- Publisher:
- Observatoire Astronomique de Marseille Provence
- Description:
- The Astrophysics Laboratory of Marseille constitutes one of the more important institutes of public research within France for cosmology, the physics and evolution of galaxies, the interstellar medium, the formation of planets and stellar systems, the Solar system, and optical astronomy. A department of scientific informatics specializes in the development of new image processing algorithms, the production of data processing pipelines, and the deployment of databases for access throught the virtual observatory.
- ID:
- ivo://org.gavo.dc/lamost6/q/svc_lrs
- Title:
- LAMOST DR6 Low Resolution Spectra
- Short Name:
- LM6 LRS SSAP
- Date:
- 27 Dec 2024 08:31:05
- Publisher:
- The GAVO DC team
- Description:
- A machine-readable interface to the LAMOST6 low resolution spectra based on SSAP and datalink.
- ID:
- ivo://org.gavo.dc/lamost6/q/svc_mrs
- Title:
- LAMOST DR6 Medium Resolution Spectra
- Short Name:
- LM6 MRS SSAP
- Date:
- 27 Dec 2024 08:31:05
- Publisher:
- The GAVO DC team
- Description:
- A machine-readable interface to the LAMOST6 medium resolution spectra based on SSAP and datalink.
- ID:
- ivo://cvo.naoc/data/lamost/dr1/ssa
- Title:
- LAMOST DR1 SPECTRUM CATALOG SERVICE
- Short Name:
- LAMOST.DR1.SSAP
- Date:
- 17 Jun 2019 15:22:03
- Publisher:
- China-VO
- Description:
- LAMOST DR1 totally releases 2,204,860 spectra, include 717,660 objects of the pilot survey (2011-10-24~2012-06-30), and 1,487,200 objects of the regular survey (2012-09-28~2013-06-30). DR1 includes two types of data: optical spectra (flux- and wavelength-calibrated, sky-subtracted), and catalog data, which includes both parameters measure from spectra, such as redshifts and signal to noise ratios, and parameters inherited from input catalogs. You should keep in mind that LAMOST is a spectral survey telescope, and the parameters related to photometry, which you get here, all come from other surveys.
- ID:
- ivo://astron.nl/lolss/q/cutout
- Title:
- LoLSS - Image Cutout Service
- Short Name:
- LoLSS Cutout
- Date:
- 02 Feb 2023 15:08:05
- Publisher:
- ASTRON
- Description:
- This service provides cutouts from the images of the LOFAR LBA Sky Survey (LoLSS).
- ID:
- ivo://astron.nl/lolss/q/cone
- Title:
- LoLSS source catalog
- Short Name:
- LoLSS catalog
- Date:
- 02 Feb 2023 15:08:05
- Publisher:
- ASTRON
- Description:
- This service provides the source catalogue of the LOFAR LBA Sky Survey (LoLSS).
- ID:
- ivo://astron.nl/lotss_dr2/q/gaus_cone
- Title:
- LoTSS-DR2 Gaussian catalog cone search
- Short Name:
- LoTSS-DR2 Gaus
- Date:
- 28 Sep 2023 14:12:45
- Publisher:
- ASTRON
- Description:
- In this data release from the ongoing LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m +44°30′ and 1h00m +28°00′ and spanning 4178 and 1457 square degrees respectively. The images were derived from 3,451 hrs (7.6 PB) of LOFAR High Band Antenna data which were corrected for the direction-independent instrumental properties as well as direction-dependent ionospheric distortions during extensive, but fully automated, data processing. A catalogue of 4,395,448 radio sources is derived from our total intensity (Stokes I) maps, where the majority of these have never been detected at radio wavelengths before. At 6′′ resolution, our full bandwidth Stokes I continuum maps with a central frequency of 144 MHz have: a median rms sensitivity of 83 μ Jy/beam; a flux density scale accuracy of approximately 10%; an astrometric accuracy of 0.2′′; and we estimate the point-source completeness to be 90% at a peak brightness of 0.8 mJy/beam. By creating three 16 MHz bandwidth images across the band we are able to measure the in-band spectral index of many sources, albeit the error on the derived spectral index is > ±0.2 which is a consequence of our flux-density scale accuracy and small fractional bandwidth. Our circular polarisation (Stokes V) 20′′ resolution 120-168 MHz continuum images have a median rms sensitivity of 95 μ Jy/beam, and we estimate a Stokes I to Stokes V leakage of 0.056%. Our linear polarisation (Stokes Q and Stokes U) image cubes consist of 480 97.6 kHz wide planes and have a median rms sensitivity per plane of 10.8mJy/beam at 4′ and 2.2mJy/beam at 20′′; we estimate the Stokes I to Stokes Q/U leakage to be approximately 0.2%. Here we characterise and publicly release our Stokes I, Q, U and V images in addition to the calibrated uv-data to facilitate the thorough scientific exploitation of this unique dataset. This service queries the Stokes I continuum mosaic gaussian component catalogue.
- ID:
- ivo://astron.nl/lotss_dr2/q/query_mosaics
- Title:
- LoTSS-DR2 mosaics
- Short Name:
- "Mosaics"
- Date:
- 28 Sep 2023 14:12:45
- Publisher:
- ASTRON
- Description:
- In this data release from the ongoing LOw-Frequency ARray (LOFAR) Two-metre Sky Survey (LoTSS) we present 120-168 MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m +44°30′ and 1h00m +28°00′ and spanning 4178 and 1457 square degrees respectively. The images were derived from 3,451 hrs (7.6 PB) of LOFAR High Band Antenna data which were corrected for the direction-independent instrumental properties as well as direction-dependent ionospheric distortions during extensive, but fully automated, data processing. A catalogue of 4,395,448 radio sources is derived from our total intensity (Stokes I) maps, where the majority of these have never been detected at radio wavelengths before. At 6′′ resolution, our full bandwidth Stokes I continuum maps with a central frequency of 144 MHz have: a median rms sensitivity of 83 μ Jy/beam; a flux density scale accuracy of approximately 10%; an astrometric accuracy of 0.2′′; and we estimate the point-source completeness to be 90% at a peak brightness of 0.8 mJy/beam. By creating three 16 MHz bandwidth images across the band we are able to measure the in-band spectral index of many sources, albeit the error on the derived spectral index is > ±0.2 which is a consequence of our flux-density scale accuracy and small fractional bandwidth. Our circular polarisation (Stokes V) 20′′ resolution 120-168 MHz continuum images have a median rms sensitivity of 95 μ Jy/beam, and we estimate a Stokes I to Stokes V leakage of 0.056%. Our linear polarisation (Stokes Q and Stokes U) image cubes consist of 480 97.6 kHz wide planes and have a median rms sensitivity per plane of 10.8mJy/beam at 4′ and 2.2mJy/beam at 20′′; we estimate the Stokes I to Stokes Q/U leakage to be approximately 0.2%. Here we characterise and publicly release our Stokes I, Q, U and V images in addition to the calibrated uv-data to facilitate the thorough scientific exploitation of this unique dataset. This service queries the Stokes I continuum mosaic images.
