- ID:
- ivo://astron.nl/hetdex/lotss-dr1-raw/cone
- Title:
- LoTSS-DR1 Raw Radio Catalogue Cone Search
- Short Name:
- LoTSS-DR1 Raw
- Date:
- 12 Nov 2021 17:52:40
- Publisher:
- ASTRON
- Description:
- This service queries the catalog of radio sources from the LOFAR Two-metre Sky Survey First Data Release (LoTSS-DR1). This data release contains images and catalogs that characterise the low-frequency radio emission in the region of the HETDEX Spring Field (right ascension 10h45m00s to15h30m00s and declination 45◦00′00′′ to 57◦00′00′′). A total of 325,694 radio sources are detected in a region covering 424 square degrees. The maps have a median sensitivity of 71 uJy/beam and a resolution of 6 arcsec. Optical counterparts for 71% of the radio sources have been identified and where possible photometric redshifts for these sources have been derived.
Number of results to display per page
Search Results
- 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.
- ID:
- ivo://astron.nl/lotss_dr2/q/src_cone
- Title:
- LoTSS-DR2 Source catalog cone search
- Short Name:
- LoTSS-DR2 Source
- 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 source catalogue.
- ID:
- ivo://org.gavo.dc/mcextinct/q/cone
- Title:
- Magellanic Clouds Extinction Values
- Short Name:
- MC extinctions
- Date:
- 23 Mar 2022 13:13:07
- Publisher:
- The GAVO DC team
- Description:
- A catalogue of E(V-I) extinction values is presented for 3174 (LMC) and 693 (SMC) fields within the Magellanic Clouds. The extinction values were computed by determining the (V-I) colour difference of the red clump from Optical Gravitational Microlensing Experiment (OGLE III) observations in the V and I bands and theoretical values for unreddend red clump colours.
- ID:
- ivo://wfau.roe.ac.uk/twompz-dsa
- Title:
- 2MASS Photometric Redshift catalogue (2MPZ)
- Date:
- 23 Jan 2024 09:45:12
- Publisher:
- WFAU, Institute for Astronomy, University of Edinburgh
- Description:
- The 2MASS Photometric Redshift catalogue (2MPZ) is constructed by cross-matching 2MASS XSC, WISE and SuperCOSMOS all-sky samples and employing the artificial neural network approach (the ANNz algorithm, Collister & Lahav 2004), trained on several redshift surveys (2MRS, SDSS, 6dFGS, 2dFGRS and ZCAT). The derived photometric redshifts have errors nearly independent of distance, with an all-sky accuracy of Ïz = 0.015, and a very small percentage of outliers. These redshift estimates have a typical precision of 12% for all the 2MASS XSC galaxies that lack spectroscopy. The resulting 2MPZ sample contains almost 1 million galaxies with a median redshift of z=0.07. This catalogue is described in Bilicki et al. 2014, ApJS, 210, 9.
76. 2Mass Query
- ID:
- ivo://org.gavo.dc/2mass/res/2mass/q
- Title:
- 2Mass Query
- Short Name:
- twomass_q
- Date:
- 23 Mar 2022 13:13:10
- Publisher:
- The GAVO DC team
- Description:
- The 2MASS Point Source Catalogue, short a couple of exotic fields. We provide this data mainly for matching with other catalogs within our TAP service.
- ID:
- ivo://archive.stsci.edu/catalogs/skymapperdr4
- Title:
- MAST SkyMapper Southern Survey Data Release 4 (SMSS DR4)
- Short Name:
- MAST SkyMapper
- Date:
- 16 Apr 2024 20:18:39
- Publisher:
- Space Telescope Science Institute Archive
- Description:
- MAST hosts a copy of the SkyMapper DR4 catalog. SMSS DR4 contains optical photometry in the 6 SkyMapper filters (u,v,g,r,i,z) for ~700 million astrophysical sources over 26,000 sq.deg, ranging from the South Celestial Pole to Dec=+16 degrees for objects with data in all bands, and some sources as far North as +29 degrees. The photometry is drawn from over 15 billion measurements made from more than 400,000 images acquired by the 1.3m SkyMapper telescope between March 2014 and September 2021. The typical 10-sigma depths for each field range between 18.5 and 20.5 ABmag, depending on the filter, but certain sky regions include longer exposures that reach as deep as 22 ABmag. Compared to previous SkyMapper data releases, DR4 includes significant enhancements in data processing, most notably a new photometric calibration anchored to synthetic photometry from Gaia low-resolution spectroscopy, which resolves reddening- and spatial-trends identified in previous releases, especially in the bluest filters, u and v. A large number of other photometric and spectroscopic surveys have been cross-matched to the dr4.master table of objects, to facilitate various scientific investigations.
- ID:
- ivo://wfau.roe.ac.uk/mgc-dsa
- Title:
- Millennium Galaxy Catalogue (MGC)
- Date:
- 04 Dec 2019 13:35:24
- Publisher:
- WFAU, Institute for Astronomy, University of Edinburgh
- Description:
- The Millennium Galaxy Catalogue (MGC) is a 37.5 deg2, medium-deep, B-band imaging survey obtained with the Wide Field Camera on the INT. The survey region is a long, 35 arcmin wide strip along the equator, covering from 10h 00m to 14h 45m and is fully contained within the regions of both the Two Degree Field Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey (SDSS).
- ID:
- ivo://CEFCA/minijpas/MINIJ-PAS-PDR201912
- Title:
- MINIJ-PAS PDR201912 Catalogue (December, 2019)
- Short Name:
- MINJPASPDR201912
- Date:
- 20 Sep 2023 06:30:00
- Publisher:
- Centro de Estudios de Física del Cosmos de Aragón (CEFCA)
- Description:
- MINIJ-PAS PDR201912 Catalogue (December, 2019) is based on scientific images in 60 filters covering a total area of ~1 square degree. MiniJ-PAS is a 60-band photometric optical survey based on images collected by the JST250 telescope and the Pathfinder instrument at the Observatorio Astrofísico de Javalambre (OAJ, Teruel, Spain) . Please include the following in any published material that makes use of this data: "Based on observations made with the JST250 telescope and PathFinder camera for Mini J-PAS project at the Observatorio Astrofísico de Javalambre, in Teruel, owned, managed and operated by the Centro de Estudios de Física del Cosmos de Aragón."
- ID:
- ivo://astron.nl/mvf/q/cone
- Title:
- MSSS Verification Field Sources
- Short Name:
- MSSS Cone Search
- Date:
- 08 Jun 2020 20:34:26
- Publisher:
- ASTRON
- Description:
- This service queries the unified source catalogue of radio sources from the Multifrequency Snapshot Sky Survey (MSSS) Verification Field. This survey is the first major observing program to be carried out with LOFAR during its ongoing commissioning phase. This service queries the unified source catalogue database for the MSSS survey. The Verification Field is a region of 100 square degrees centered at (15h,69◦).