XMM/VIRMOS ivo://nasa.heasarc/xmdsvvds4s NASA/GSFC HEASARC Chiappetti et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Optical Counterpart The XMM-Newton Medium Deep Survey/VIRMOS VLT Deep Survey (XMDS/VVDS) 4-Sigma Catalog contains 286 X-ray sources with their optical identification taken from the XMDS survey (using the XMM-Newton EPIC instrument). It is the first catalog of X-ray sources resulting from the central area of the XMM-LSS (Large-Scale Structure Survey). This first version is limited to sources detected at 4{sigma} at least in one energy band, AND falling in the 1 square degree area covered by the optical photometric VVDS survey, which allowed the authors to provide optical and radio identifications. This table was created by the HEASARC in August 2005 based on CDS table J/A+A/439/413/xmds1.dat. This is a service provided by NASA HEASARC . 2005A&amp;A...439..413C https://heasarc.gsfc.nasa.gov/W3Browse/all/xmdsvvds4s.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=xmdsvvds4s& GET text/xml 180 99999 true 35.88416667 -4.96075 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=xmdsvvds4s GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_xmdsvvds4s&Action=More+Options&Action=Parameter+Search&ConeAdd=1 XMM-NEWTON 0.0166666666666667 X-ray public xmdsvvds4s XMM-Newton Medium Deep Survey/VIRMOS VLT Deep Survey 4-Sigma Cat name Catalog Designation of the Object meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable soft_flux Flux in 0.5-2keV Band (erg/cm^2/s) erg/cm^2/s phot.flux;em.X-ray.soft double nullable hard_flux Flux in 2-10keV Band (erg/cm^2/s) erg/cm^2/s phot.count;em.X-ray.medium double nullable rmag R Magnitude of Counterpart mag phot.mag;em.opt.R double nullable rmag_error Error on R Magnitude mag stat.error;phot.mag;em.opt.R double nullable gap_flag Flag Indicates Source Falls on Inter-CCD Gaps or Close to Edge of FOV meta.code.qual short nullable xo_offset Distance between X-ray Source and Counterpart (arcsec) arcsec pos.angDistance;em.opt;em.X-ray double nullable best_band Flag Indicates Band Which Has the Highest Signal-to-Noise Ratio meta.code;instr.bandpass char nullable bii Galactic Latitude degree pos.galactic.lat double nullable lii Galactic Longitude degree pos.galactic.lon double nullable hard_counts_error Error on Net Counts in 2-10keV Band ct stat.error;phot;em.X-ray.medium double nullable sequence_id Internal Sequence Identifier meta.id short nullable id_rank Flag Indicates Quality of the Identification with the Counterpart meta.code.qual;src short nullable virmos_flag Flag Indicates Presence of Radio Counterpart in VIRMOS 1.4GHz (<J/A+A/403/857>) meta.code;src;em.radio char nullable soft_counts_error Error on Net Counts in 0.5-2keV Band ct stat.error;phot;em.X-ray.soft double nullable photometry_flag Flag Indicates Reliability of the Photometry meta.code.qual;phot;em.opt short nullable alt_name Designation of Counterpart in External Catalogs meta.id char nullable imag I Magnitude of Counterpart mag phot.mag;em.opt.I double nullable hard_counts Number of Net Counts in 2-10keV Band ct phot;em.X-ray.medium double nullable xmm_lss_flag Flag Indicates Presence of Radio Counterpart in XMM-LSS 325MHz (<J/ApJ/591/640>) meta.code;src;em.radio char nullable imag_error Error on I Magnitude mag stat.error;phot.mag;em.opt.I double nullable soft_counts Number of Net Counts in 0.5-2keV Band ct phot;em.X-ray.soft double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable