II/242), and the present Extended Source Catalog.
V. 2MASS Extended Source Catalog and Databases "I find it sometimes difficult to match the result of a coordinate query of the Extended Source Catalog (XSC), because the field id_cat is only 9 characters long , and thus, longer galaxy names, such as ESO, MCG, etc., are truncated. The 470,992,970-source Two Micron All Sky Survey (2MASS) Point Source Catalog was produced by a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. The 2MASS Extended Source Catalog contains sources that are extended with respect to the instantaneous PSF, such as galaxies and Galactic nebulae. The 2MASS extended source database contains several classes of “extended objects,’’ including real galaxies, Galactic nebulae and pieces of large angular-size sources, Galactic 2MASS Data Releases.
Executive Summary of 2MASS All-Sky Release Data Products a. 2006) has produced the largest compilation of sources detected in the NIR (1-2.4 μm) containing over 470 million sources in the Point Source Catalogue (PSC; primarily stars) and 1.6 million sources in the Extended Source Catalogue (XSC; primarily galaxies, Jarrett et al. 2MASS has released data products on the approximate schedule: Point Source Catalog (PSC) The 2MASS All-Sky Release PSC contains astrometry and photometry in the three survey bandpasses for 470,992,970 sources. An extended source catalog containing positions and total magnitudes for more than 1,000,000 galaxies and other nebulae. A point source catalog containing accurate positions and fluxes for ~300 million stars and other unresolved objects. In addition, 1 million objects were cataloged in the 2MASS Extended Source Catalog (2MASX). This paper describes the basic algorithms used to detect and characterize extended sources in the 2MASS database and catalog. 1. 2000). 3. The 2MASS All-Sky Data Release includes the FITS images covering the entire sky, a Point Source Catalog (PSC) of 471 million sources (Cat. The Two-Micron All-Sky Survey (2MASS; Skrutskie et al.
Additional general information about the 2MASS All-Sky Release. A future paper will provide a full statistical analysis and verification of the completeness, reliability and integrity of the first release catalog, as well as some of the basic scientific results of the catalog. 2MASS produced an astronomical catalog with over 300 million observed objects, including minor planets of the Solar System, brown dwarfs, low-mass stars, nebulae, star clusters and galaxies.
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