Details on Acronym: 2CXO | |
2CXO | (Second release of the Chandra Source Catalog) |
Write: | <<2CXO JHHMMSS.s+DDMMSS{|X}>> |
N: | about 150000 |
Object: | (X) (SIMBAD class: X = X-ray Source) |
Note: | The second release of the Chandra Source Catalog (CSC) is currently under development and is expected early 2014, but we would like to pre-register the acronym. Its nature is identical to the CXO acronym which we reserved exclusively for the first release of the CSC, with one exception: while the first release contained only compact (i.e., unresolved) sources, in this release we will include extended sources as well; if there would a be naming conflict between a compact and an extended source, we will append the letter 'X' to the source name to identify the extended source. Consequently, a source whose name ends in 'X' will be guaranteed to be extended; all other sources may be compact or extended. The rationale for not explicitly identifying compact sources is the large variation in PSF size over Chandra's field of view which makes a specific compact designation meaningless. |
Auth.: | Arnold Rots Smithsonian Astrophysical Observatory |
=E= | Catalogue in electronic form as <IX/57/> |
Origin | of the Acronym: p = Pre-registered to IAU Comm.5 |