- ID:
- ivo://nasa.heasarc/erassmastr
- Title:
- eROSITA All-Sky Survey Master Catalog
- Short Name:
- ERASSMASTR
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The eROSITA-DE DR1 comprises data from the first six months of the SRG/eROSITA all-sky survey (eRASS1) whose proprietary rights lie with the German eROSITA consortium. Data rights are split by Galactic longitude (l) and latitude (b), with a division marked by the great circle passing through the Galactic poles (l,b)=(0,+90);(0,-90) and the Galactic Center Sgr A* (l,b)=(359.94423568,-0.04616002): data with -0.05576432< l <179.94423568 degrees (Eastern Galactic hemisphere) belong to the Russian consortium, while data with 359.94423568 > l >179.94423568 degrees (Western Galactic hemisphere) belong to eROSITA-DE. The Western Galactic hemisphere observations were released to the public through the <a href="https://erosita.mpe.mpg.de/dr1/">eROSITA-DE site</a> on 31 January 2024. In the Early Data Release (EDR), the data taken during the Calibration and Performance Verification (Cal-PV) phase were released and are available in <a href="/W3Browse/erosita/erosmaster.html">EROSMASTER</a>. The reprocessed EDR observations are not part of DR1. The primary data products of the eROSITA-DE DR1 consist of calibrated event files, which contain the information generated by the cameras used during the eRASS1 observations. The eSASS4DR1 pipeline creates these event files after the received telemetry data from eROSITA of each observation has been reformatted, packaged, and archived by a pre-processor. Note that the coverage of the sky is not uniform, i.e., not all observations have been performed with all seven eROSITA telescope modules (TMs). The eROSITA-DE team has divided the eRASS1 observations into 4700 sky tiles for practical purposes. Each sky tile has a size of 3.6x3.6 square degrees, overlapping by approximately 20 arcmin. Of the 4700 sky tiles, eROSITA-DE have proprietary rights on 2248 of them, and 199 sky tiles have shared rights between the German and Russian consortiums. eROSITA-DE DR1 comprises 2447 sky tiles in total, of which 199 have partial eROSITA-DE data. The FITS table here, provides the mapping between sky-tile identification and sky coordinates for the 2447 sky tiles. In addition, the 0.2-2.3 (<a href="/W3Browse/erosita/erass1main.html">ERASS1MAIN</a>) and 2.3-5 keV (3-band; <a href="/W3Browse/erosita/erass1hard.html">ERASS1HARD</a>) source catalogs are also available. This database table was created by the HEASARC in August 2024 based on the FITS file of the survey field boundaries available from the eROSITA-DE <a href="https://erosita.mpe.mpg.de/dr1/AllSkySurveyData_dr1/">DR1 site</a>. This is a service provided by NASA HEASARC .
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- ID:
- ivo://nasa.heasarc/efedshard
- Title:
- eROSITA eFEDS Hard X-Ray (2.3-5.0 keV) Source Catalog
- Short Name:
- EFEDSHARD
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The eROSITA X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) observatory combines a large field of view and collecting area in the energy range ~0.2 to ~8.0 keV with the capability to perform uniform scanning observations of large sky areas. SRG/eROSITA performed scanning observations of the ~140 square degrees eROSITA Final Equatorial Depth Survey (eFEDS) field as part of its performance verification phase. The observing time was chosen to slightly exceed the depth of equatorial fields after the completion of the eROSITA all-sky survey. The authors present a catalog of detected X-ray sources in the eFEDS field providing source positions and extent information, as well as fluxes in multiple energy bands and document a suite of tools and procedures developed for eROSITA data processing and analysis, validated and optimized by the eFEDS work. A multi-stage source detection procedure was optimized and calibrated by performing realistic simulations of the eROSITA eFEDS observations. The authors cross-matched the eROSITA eFEDS source catalog with previous XMM-ATLAS observations, confirming excellent agreement of the eROSITA and XMM-ATLAS source fluxes. This table presents the hard band sample of 246 sources detected in the energy range 2.3-5.0 keV above a detection likelihood of 10. These sources were detected in three bands (0.2-0.6, 0.6-2.3, and 2.3-5keV) with detect_likelihood >=5 and extent_likelihood = 0 (i.e. point sources). The linked <a href="/W3Browse/erosita/efedsmain.html">EFEDSMAIN</a> table presents the primary catalog of 27910 X-ray sources, including 542 with significant spatial extent, detected in the 0.2-2.3 keV energy range with detection likelihoods >=6 , corresponding to a (point source) flux limit of ~6.5 x 10<sup>-15</sup> erg/cm<sup>2</sup>/s in the 0.5-2.0 keV energy band (80% completeness). A supplementary catalog contains 4774 low-significance source candidates with detection likelihoods between 5 and 6. The dedicated data analysis software package, calibration database, and calibrated data products are described in an appendix. Additional information for the eROSITA early data release observations is available at the <a href="https://erosita.mpe.mpg.de/edr/">eROSITA-DE EDR website</a>. This database table was originally ingested by the HEASARC in August 2022 and is based upon the "eROSITA/eFEDS hard catalogue" file downloaded from the eROSITA-DE Early Data Release <a href="https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/">catalogs web page</a>. It was revised in June 2024 in order to rename the right ascension, declination, and their related positional uncertainty parameters to match the parameter naming convention used in other eROSITA catalogs. In some cases, the HEASARC has altered the original field names, as per HEASARC conventions, and provides the original field names in square brackets. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/efedsmain
- Title:
- eROSITA eFEDS Main X-Ray (0.2-2.3 keV) Source Catalog
- Short Name:
- EFEDSMAIN
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The eROSITA X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) observatory combines a large field of view and collecting area in the energy range ~0.2 to ~8.0 keV with the capability to perform uniform scanning observations of large sky areas. SRG/eROSITA performed scanning observations of the ~140 square degrees eROSITA Final Equatorial Depth Survey (eFEDS) field as part of its performance verification phase. The observing time was chosen to slightly exceed the depth of equatorial fields after the completion of the eROSITA all-sky survey. The authors present a catalog of detected X-ray sources in the eFEDS field providing source positions and extent information, as well as fluxes in multiple energy bands and document a suite of tools and procedures developed for eROSITA data processing and analysis, validated and optimized by the eFEDS work. A multi-stage source detection procedure was optimized and calibrated by performing realistic simulations of the eROSITA eFEDS observations. The authors cross-matched the eROSITA eFEDS source catalog with previous XMM-ATLAS observations, confirming excellent agreement of the eROSITA and XMM-ATLAS source fluxes. This table presents the primary catalog of 27910 X-ray sources, including 542 with significant spatial extent, detected in the 0.2-2.3 keV energy range with detection likelihoods >=6 , corresponding to a (point source) flux limit of ~6.5 x 10<sup>-15</sup> erg/cm<sup>2</sup>/s in the 0.5-2.0 keV energy band (80% completeness). The linked <a href="/W3Browse/erosita/efedshard.html">EFEDSHARD</a> table presents the hard band sample of 246 sources detected in the energy range 2.3-5.0 keV above a detection likelihood of 10. A supplementary catalog contains 4774 low-significance source candidates with detection likelihoods between 5 and 6. The dedicated data analysis software package, calibration database, and calibrated data products are described in an appendix. Additional information for the eROSITA early data release observations is available at the <a href="https://erosita.mpe.mpg.de/edr/">eROSITA-DE EDR website</a>. This database table was originally ingested by the HEASARC in August 2022 and is based upon the "eROSITA/eFEDS main catalogue" file downloaded from the eROSITA-DE Early Data Release <a href="https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/">catalogs web page</a>. It was revised in June 2024 in order to rename the right ascension, declination, and their related positional uncertainty parameters to match the parameter naming convention used in other eROSITA catalogs. In some cases, the HEASARC has altered the original field names, as per HEASARC conventions, and provides the original field names in square brackets. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/erosmaster
- Title:
- eROSITA Observations Master Catalog
- Short Name:
- EROSMASTER
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This is the eROSITA Master Catalog which has been created from information supplied to the HEASARC by the <a href="https://erosita.mpe.mpg.de/edr/eROSITAObservations/">eROSITA-DE</a> team. This database table contains the list of observations made by the SRG eROSITA mission. Currently, the German eROSITA Consortium (eROSITA-DE) has made public the observations obtained during the Calibration and Performance Verification (Cal-PV) program for which it holds data exploitation rights. Over one hundred individual pointing and field scans were performed with eROSITA as a prime instrument between mid-September and mid-December 2019 form part of the Cal-PV program. For practical purposes, the eROSITA-DE team has divided the Cal-PV observations into four categories: <pre> Survey fields: These are scan observations of large, contiguous areas of the sky. Magellanic Clouds: These are observations around the Small and Large Magellanic Clouds. Galactic fields: These include observations with |Galactic latitude| < 17 deg. Extragalactic fields: These include observations with |Galactic latitude| > 17 deg. </pre> The HEASARC has created this database table, based on the observations from the shared public data, and added links to associated <a href="https://heasarc.gsfc.nasa.gov/db-perl/W3Browse/w3table.pl?MissionHelp=srg-erosita">eROSITA</a> catalogs and data products, where available. The HEASARC produced this database table based on information obtained from the eROSITA-DE website in July 2023. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/esouppsala
- Title:
- ESO-Uppsala ESO(B) Survey
- Short Name:
- ESO/Uppsala
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This database table was derived from information provided in "The ESO/Uppsala Survey of the ESO(B) Atlas" (ESO/U), which is a joint project undertaken by the European Southern Observatory (ESO) and the Uppsala Observatory to provide a systematic and homogeneous search of the ESO(B) Atlas (also known as the Quick Blue Survey). The ESO(B) Atlas, taken with the ESO 1 m Schmidt telescope at La Silla, Chile, covers 606 fields from -90 to -20 degrees of declination. The fields are similar in size and scale to those of the Palomar Observatory Sky Survey. Unsensitized IIa-O plates and a 2 mm GG385 filter were used to give a passband similar to the Johnson B color. Additional information is available from the HEASARC. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/etachahard
- Title:
- Eta Chamaeleontis eROSITA EDR Field X-Ray (2.3-5.0 keV) Source Catalog
- Short Name:
- ETACHAHARD
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This database table contains the catalog of the X-ray sources in the eta Chamaeleontis field scan eROSITA observation (OBSID 300004; see Robrade et al., 2022) in the hard (2.3-5.0 keV) band. The nearby young open cluster eta Chamaeleontis was observed by eROSITA/SRG during its CalPV phase for 150 ks. The eROSITA data were taken in the field-scan mode, an observing mode of Spectrum-Roentgen-Gamma (SRG) that follows a rectangular grid-like pattern, covering a 5x5 deg field with an exposure depth of about 5 ks. The authors studied the known members in X-rays and searched for potential new members of the anticipated dispersed low-mass cluster population. Detected sources were identified by cross-matching X-ray sources with Gaia and 2MASS, and young stars were identified by their X-ray activity, by their position in the color-magnitude diagram, and by their astrometric and kinematic properties. X-ray luminosities, light curves, and spectra of cluster members were obtained and compared with previous X-ray data. Literature results of other member searches were used to verify the new member candidates in the observed field. The authors determined X-ray properties of virtually all known eta Cha members and identified five additional stellar systems that showed basically identical characteristics, but are more dispersed. Four of them were previously proposed as potential members; this status is supported by this X-ray study. Based on their spatial distribution, further members are expected beyond the sky region surveyed. The identified stellar systems very likely belong to the ejected halo population, which brings the total number of eta Cha cluster members to at least 23. <a href="/W3Browse/erosita/etachamain.html">ETACHAMAIN</a> is the related catalog of main (0.2-2.3 keV) sources. This database table was ingested by the HEASARC in August 2022 and is based upon a file downloaded from the eROSITA-DE Early Data Release <a href="https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/">catalogs web page</a>. In some cases, the HEASARC has altered the original field names, as per HEASARC conventions, and provides the original field names in square brackets. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/etachamain
- Title:
- Eta Chamaeleontis eROSITA EDR Field X-Ray (0.2-2.3 keV) Source Catalog
- Short Name:
- ETACHAMAIN
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This database table contains the "main" (0.2-2.3 keV) catalog of the X-ray sources in the eta Chamaeleontis field scan eROSITA observation (OBSID 300004; see Robrade et al., 2022). The nearby young open cluster eta Chamaeleontis was observed by eROSITA/SRG during its CalPV phase for 150 ks. The eROSITA data were taken in the field-scan mode, an observing mode of Spectrum-Roentgen-Gamma (SRG) that follows a rectangular grid-like pattern, covering a 5x5 deg field with an exposure depth of about 5 ks. The authors studied the known members in X-rays and searched for potential new members of the anticipated dispersed low-mass cluster population. Detected sources were identified by cross-matching X-ray sources with Gaia and 2MASS, and young stars were identified by their X-ray activity, by their position in the color-magnitude diagram, and by their astrometric and kinematic properties. X-ray luminosities, light curves, and spectra of cluster members were obtained and compared with previous X-ray data. Literature results of other member searches were used to verify the new member candidates in the observed field. The authors determined X-ray properties of virtually all known eta Cha members and identified five additional stellar systems that showed basically identical characteristics, but are more dispersed. Four of them were previously proposed as potential members; this status is supported by this X-ray study. Based on their spatial distribution, further members are expected beyond the sky region surveyed. The identified stellar systems very likely belong to the ejected halo population, which brings the total number of eta Cha cluster members to at least 23. <a href="/W3Browse/erosita/etachahard.html">ETACHAHARD</a> is the related catalog of hard band (2.3-5.0 keV) sources. This database table was ingested by the HEASARC in August 2022 and is based upon a file downloaded from the eROSITA-DE Early Data Release <a href="https://erosita.mpe.mpg.de/edr/eROSITAObservations/Catalogues/">catalogs web page</a>. In some cases, the HEASARC has altered the original field names, as per HEASARC conventions, and provides the original field names in square brackets. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/elaisfbmc
- Title:
- European Large-Area ISO Survey (ELAIS) Final Band-Merged Catalog
- Short Name:
- ELAISFBMC
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This table contains the final band-merged European Large-Area ISO Survey (ELAIS) Catalog at 6.7, 15, 90 and 175 microns (µm), and the associated data at U, g', r', i', Z, J, H, K and 20 cm. The origin of the survey, infrared and radio observations, data-reduction and optical identifications are briefly reviewed in the reference paper, and a summary of the area covered and the completeness limit for each infrared band is given. A detailed discussion of the band-merging and optical association strategy is given in the paper. The total catalog consists of 3762 sources. 23% of the 15-um sources and 75% of the 6.7-um sources are stars. In the paper, for extragalactic sources observed in three or more infrared bands, color-color diagrams are presented and discussed in terms of the contributing infrared populations. Spectroscopic redshifts are tabulated, where available. For the N1 and N2 areas, the Isaac Newton Telescope (INT) ugriz Wide Field Survey permits photometric redshifts to be estimated for galaxies and quasars. These agree well with the spectroscopic redshifts, within the uncertainty of the photometric method (~10% in (1 +z) for galaxies). There is a high proportion of ultraluminous infrared galaxies (ULIRGs, with log<sub>10</sub> of 1-1000 um luminosity L<sub>ir</sub> > 12.22) in the ELAIS Catalog (14% of 15-um galaxies with known z), many with Arp 220-like SEDs. 10% of the 15-um sources are genuine optically blank fields to r'= 24: these must have very high infrared-to-optical ratios and probably have z > 0.6, so are high-luminosity dusty starbursts or Type 2 AGN. Nine hyperluminous infrared galaxies (L<sub>ir</sub> > 13.22) and nine extremely red objects (EROs) (r-K > 6) are found in the survey. The latter are interpreted as ultraluminous dusty infrared galaxies at z ~ 1. The large numbers of ultraluminous galaxies imply very strong evolution in the star formation rate between z = 0 and 1. There is also a surprisingly large population of luminous (L<sub>ir</sub> > 11.5), cool (cirrus-type SEDs) galaxies, with L<sub>ir</sub> - L<sub>opt</sub> > 0, implying A<sub>V</sub> > 1. This table contains the total catalog of 3762 ELIAS band-merged sources. This table was created by the HEASARC in October 2012 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/MNRAS/351/1290">CDS Catalog J/MNRAS/351/1290</a> files catalog.dat (3523 sources) and unassoc.dat (239 sources). It was last updated in November 2012 to correct the 6.7-micron flux density values for 14 entries using data provided directly from the primary author. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/euvemaster
- Title:
- EUVE Archive and Observation Log
- Short Name:
- EUVE
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This catalog of the EUVE Science Archive has been constructed based on information provided by personnel of the Center for Extreme-Ultraviolet Astrophysics (CEA), and is made available in the current EUVEMASTER database table. Most of the information in the catalog is also in the headers of the FITS files. The HEASARC now has nearly all of the 1378 pointed EUVE Deep Survey/Spectrometer (DS/S) datasets that were processed by CEA until its closing in March 2001. There are a small number of observations that were made in the year 2000 for which the HEASARC does not currently have the corresponding datasets. Notice that this catalog does not contain entries corresponding to EUVE observations in scan mode or where the files received by the HEASARC were not of the normal image or events type. This is the 7th (and possibly final) version of the EUVEMASTER database, last updated in June 2001. This catalog has been constructed based on information provided by staff members of the Center for Extreme-Ultraviolet Astrophysics (CEA) in Berkeley, CA, whose help is gratefully acknowledged. This is a service provided by NASA HEASARC .
270. EUVE Bright Sources
- ID:
- ivo://nasa.heasarc/euvebsl
- Title:
- EUVE Bright Sources
- Short Name:
- EUVE/Bright
- Date:
- 18 Apr 2025
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This database table contains a detailed list of verified bright EUVE sources detected during the survey phase of the EUVE mission (calibration targets are also included). Two distinct surveys, the all-sky and deep surveys, were conducted by the four EUVE telescopes during the first six months of the mission. Further documentation is available through the HEASARC. This is a service provided by NASA HEASARC .
