LMCEXTOBJ ivo://nasa.heasarc/lmcextobj NASA/GSFC HEASARC Bica et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source A survey of extended objects in the Large Magellanic Cloud (LMC) was carried out on the ESO/SERC R and J Sky Survey Atlases, checking entries in previous catalogs and searching for new objects. The census provided 6659 objects including star clusters, emission-free associations, and objects related to emission nebulae. Each of these classes contains three subclasses with intermediate properties, which are used to infer total populations. The survey includes cross-identifications among catalogs, and includes 3246 new objects (~49% of the unified catalog). The authors have provided accurate positions, classification, and homogeneous measurements of sizes and position angles, as well as information on cluster pairs and hierarchical relation for superimposed objects. This unification and enlargement of catalogs is important for future searches of fainter and smaller new objects. The present catalog together with its previous counterpart for the SMC and the inter-Cloud region provide a total population of 7847 extended objects in the Magellanic System. The angular distribution of the ensemble reveals important clues on the interaction between the LMC and SMC. This table was created by the HEASARC in March 2007 based on the CDS table J/AJ/117/238, file table2.dat and contains the 6659 extended objects found in this LMC survey. This is a service provided by NASA HEASARC . 1999AJ....117..238B https://heasarc.gsfc.nasa.gov/W3Browse/all/lmcextobj.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=lmcextobj& GET text/xml 180 99999 true 71.34583333 -83.99694444 0.166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=lmcextobj GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_lmcextobj&Action=More+Options&Action=Parameter+Search&ConeAdd=1 STAR CATALOG 0.166666666666667 Optical public lmcextobj Large Magellanic Cloud Extended Objects Catalog name Object Designation 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 major_axis Size of the Major Axis (arcmin) arcmin double nullable minor_axis Size of the Minor Axis (arcmin) arcmin double nullable position_angle Position Angle of Major Axis (degree) degree pos.posAng short nullable lii Galactic Longitude degree pos.galactic.lon double nullable bii Galactic Latitude degree pos.galactic.lat double nullable plate_quadrant Sky Survey Plate Quadrant char nullable alt_names Alternative Designations from Various Catalogs char nullable remarks Remarks Concerning Object char nullable object_type Flag [ACN] Indicates Classification: C=star cluster, A=association, N=nebula char 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