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- ID:
- ivo://org.gavo.dc/lswscans/res/positions/siap
- Title:
- HDAP -- Heidelberg Digitized Astronomical Plates
- Short Name:
- hdap_siap
- Date:
- 31 Oct 2023 19:15:05
- Publisher:
- The GAVO DC team
- Description:
- Scans of plates kept at Landessternwarte Heidelberg-Königstuhl. They were obtained at location, at the German-Spanish Astronomical Center (Calar Alto Observatory), Spain, and at La Silla, Chile. The plates cover a time span between 1880 and 1999. Specifically, HDAP is essentially complete for the plates taken with the Bruce telescope, the Walz reflector, and Wolf's Doppelastrograph at both the original location in Heidelberg and its later home on Königstuhl.
- ID:
- ivo://org.gavo.dc/hppunion/q/im
- Title:
- Historical Photographic Plate Image Archive
- Short Name:
- hpp_web
- Date:
- 23 Mar 2022 13:13:04
- Publisher:
- The GAVO DC team
- Description:
- GAVO's historical photographic plate archive (GHHPA) is a collection of various digitized historical photographic plates. It currently exposes: * the scans of plates of selected Kapteyn special fields obtained at Potsdam * the Palomar-Leiden Trojan surveys, 1960-1977, * a collection of plates obtained at Boyden Station, South Africa, kept at various German observatories. Other plate collections kept by GAVO include the Heidelberg Digitized Astronomical Plates HDAP, ivo://org.gavo.dc/lswscans/res/positions/siap, and the APPLAUSE database from Potsdam.
- ID:
- ivo://org.gavo.dc/lamost6/q/svc_lrs
- Title:
- LAMOST DR6 Low Resolution Spectra
- Short Name:
- LM6 LRS SSAP
- Date:
- 30 May 2022 13:40:13
- 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:
- 30 May 2022 13:40:13
- Publisher:
- The GAVO DC team
- Description:
- A machine-readable interface to the LAMOST6 medium resolution spectra based on SSAP and datalink.
- ID:
- ivo://org.gavo.dc/lamost5/q/ssa
- Title:
- LAMOST DR5 survey spectra
- Short Name:
- LAMOST DR5 SSAP
- Date:
- 13 May 2024 15:44:08
- Publisher:
- The GAVO DC team
- Description:
- This services provides 1D spectra from DR5 of LAMOST (Large Sky Area Multi-Object Fiber Spectroscopic Telescope) through SSAP; data is served both in VO-standard SDM and, via datalink, the original SDSS-inspired FITS described in http://dr5.lamost.org/doc/data-production-description .
- ID:
- ivo://svo.cab/cat/chiu06
- Title:
- L and T dwarf (Chiu et al. 2006)
- Short Name:
- Chiu2006
- Date:
- 03 Jun 2020 15:34:07
- Publisher:
- SVO/CAB
- Description:
- L and T dwarf (Chiu et al. 2006)
- 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.
- ID:
- ivo://org.gavo.dc/lotsspol/q/ssa
- Title:
- LoTSS DR2 Polarization spectra
- Short Name:
- lotsspol SSAP
- Date:
- 20 Jan 2023 07:33:07
- Publisher:
- The GAVO DC team
- Description:
- The LOFAR Two Meter Sky Survey LoTSS DR2 (:bibcode:`2022A&A...659A...1S`) obtained radio data from 27% of the northern sky between 120 and 168 MHz in the year 2014 through 2020. This service publishes polarization spectra of extragalactic radio sources (radio galaxies and blazars) and the rotation measures derived from them. We also give redshifts for all sources. The data has a spatial resolution of 20 arcsec.
- ID:
- ivo://org.gavo.dc/lotsspol/q/cone
- Title:
- LoTSS DR2 Rotation Measures
- Short Name:
- lotsspol SCS
- Date:
- 20 Jan 2023 07:33:07
- Publisher:
- The GAVO DC team
- Description:
- The LOFAR Two Meter Sky Survey LoTSS DR2 (:bibcode:`2022A&A...659A...1S`) obtained radio data from 27% of the northern sky between 120 and 168 MHz in the year 2014 through 2020. This service publishes polarization spectra of extragalactic radio sources (radio galaxies and blazars) and the rotation measures derived from them. We also give redshifts for all sources. The data has a spatial resolution of 20 arcsec.