/ftp/cats/V/98



*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
V/98   ==OBSOLETE version of Catalogue==
12-Dec-2003: See V/107
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=V/98
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

drwxr-xr-x 137 cats archive 4096 Nov 21 13:33 [Up] drwxr-xr-x 2 cats archive 4096 Dec 15 2013 [TAR file] -rw-r--r-- 1 cats archive 359 Jan 30 2009 .message -r--r--r-- 1 cats archive 9376 May 18 2001 ReadMe -rw-r--r-- 1 cats archive 2872 Jan 30 2009 +footg5.gif -rw-r--r-- 1 cats archive 44929 Jan 30 2009 +footg8.gif -r--r--r-- 1 cats archive 9492734 Dec 4 1997 msx.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : V/98 MSX Infrared Astrometric Catalog (Egan+ 1996) ================================================================================ The MSX Infrared Astrometric Catalog Egan M.P., Price S.D. <Astron. J 112, 2862 (1996)> =1996AJ....112.2862E ================================================================================ ADC_Keywords: Infrared sources ; Proper motions ; Spectroscopy ; Cross identifications Mission_Name: MSX Abstract: The MSX Infrared Astrometric Catalog has been contructed as a tool for improving the pointing accuracy of infrared observations. The catalog contains 177,860 astrometric stars, 61,242 which have been identified with their infrared counterparts from IRAS catalogs and the Catalog of Infrared Observations through position and color matching. Infrared flux densities are predicted for 6 wavelength bands between 4 and 22um. The catalog identifications are complete to within the spatial coverage of current surveys for those astrometric stars brightest in the infrared. By predicting fluxes of astrometric stars without IR identifications we are able to extend the catalog to areas of the sky which were incomplete in the IRAS catalogs. Furthermore, by retaining stars below the brightness limit of current surveys we are able to provide better spatial coverage to help point or position the next generation of infrared telescopes. Description: This version of the MSX IR Astrometric Catalog is a truncated version of the documentation which exists for the convenience of the user and is primarily intended to allow quick access to the file formats and other information needed to access the information. The AJ paper contains the definitive information about the catalog itself. The MSX IR Astrometric Catalog, Version 4.2.1 was constructed from a number of visible astrometric catalogs, and contains position information accurate to the sub-arcsecond level. The FK5 (1988 Fricke Schwan & Lederle, Cat. I/149), FK5 Extension (1991 Fricke, Schwan & Corbin, Cat. I/175), Astrographic Catalog of Reference Stars (1991 Corbin & Urban, Cat. I/171), Position and Proper Motion Catalog (1988 Roeser & Bastian, Cat. I/146) and PPM South (1991 Bastian et al., Cat. I/193) were the sources of position and magnitude information. The PPM and FK5 catalogs contain 1-D spectral type information, and this was supplemented where possible with 2-D MK spectral types. The ACRS and PPM quote photographic magnitudes. These were transformed to V magnitude using the spectral type and expected B-V color. Spatial coincidence and color-matching criteria (based on V-[12] color and spectral type) were used to identify IR counterparts of the astrometric stars. The IRAS Point Source (Cat. II/125), Faint Source (Cat. II/156), Faint Source Reject file, and Serendipitous Survey (Cat. II/126) catalogs were used to supply IR observations, as was the Catalog of Infrared Observations (1993 Gezari et al., Cat II/209). The infrared telescope (SPIRIT III) aboard the Ballistic Missile Defense Organization (BMDO) Midcourse Space Experiment (MSX) (Mill et al., 1994, J. of Spacecraft & Rockets 31, 900) has detectors which allow spatial resolution 30 times better than that achieved by IRAS The IR flux in each SPIRIT III band was estimated using the V magnitude, spectral type, and IR flux (if available) to determine a blackbody spectrum for the star, which was then convolved with the system spectral response of each SPIRIT III radiometer band. Stars which were brighter than 8th magnitude in band A were retained in the final MSX IR astrometric catalog. In MSXv4.2.1, there are 177860 stars, 61242 of which had IR counterparts.

© UDS/CNRS

Contact