MSXUVPSC - Midcourse Space Experiment (MSX) Ultraviolet Point Source Catalog
The UV instrument on MSX was named UVISI (Mill et al., 1994, Journal of Spacecraft and Rockets, 31, 900 (1994JSpRo..31..900M in ADS); Carbary et al., 1994, Applied Optics, 33, 4201 (1994ApOpt..33.4201C in ADS)). The fields-of-view for the narrow-field and wide-field UV imagers were 1.46 x 1.19 degrees (detector pixels of 20.6" x 17.5") and 13.4 x 9.2 degrees (detector pixels of 3.12' x 2.27'), respectively. Four filters were used with the narrow-field imager (IUN) with effective wavelengths centered at 2480 Angstrom (IUN3), 2310 Angstrom (IUN4), 2230 Angstrom (IUN5), and 2930 Angstrom (IUN6). Two filters were used with the wide-field imager (IUW) and centered at 1320 Angstrom (IUW3) and 1560 Angstrom (IUW6).
The HEASARC has removed from this table the parameter describing the objects' magnitude in the IUN5 filter as all of the sources had null values for this parameter. The CDS had previously made the following modifications compared to the version of the catalog as published in the reference paper:
(1) The angular distances to the SIMBAD object (column "AngDist" of file catal.dat, called 'Offset' in this HEASARC table) was recomputed at CDS, the original values looking suspect. (2) In the course of this modification, 17 SIMBAD IDs were removed due to a large offset, most likely due to a sign error in the interpretation of SIMBAD's declination for IDs: 003341+001712 063054+004539 063211+005630 063754+003151 133358+001928 142557+003939 144541+002439 155701+004808 162743+004620 185855+003355 191033+004132 193004+005316 194525+001239 195040+004101 195717+001959 202844+005149 234324+000729
The Midcourse Space Experiment Point Source Catalog (March 2004). Newcomer R.E., Murthy J., Henry R.C., Price S.D., Paxton L. <Air Force Research Laboratory Technical Report AFRL-VS-TR-2004-1056 (2004)>
Imager Filter W(eff) Bandpass DW Comment A A A IUN 3 2480 2300-2600 300 4 2310 1800-3000 1200 5 2230 2000-2300 300 No non-null values 6 2930 2600-3000 400 IUW 3 1320 1280-1380 100 6 1560 1450-1800 350 IVN 5 2940 3050-3150 100 Note inconsistent Bandpass & DWThe tabulated magnitudes are Hayes-Latham magnitudes m and are related to the observed intensities (flux densities) Fw in erg s-1 cm-2 A-1 at the specific wavelength W(eff) (the weighted filter central wavelength) for each filter by the relation
m = -2.5 x log Fw - 21.175
The target designation based on its J2000.0 coordinates, e.g., 'MSX UV JHHMMSS+DDMMSS'.
The Right Ascension of the source in the selected equinox. This was derived from the position-based name and thus is based on the J2000.0 position given to an accuracy of 1 second of time.
The Declination of the source in the selected equinox. This was derived from the position-based name and thus is based on the J2000.0 position given to an accuracy of 1 arcsecond.
The Galactic Longitude of the source.
The Galactic Latitude of the source.
The data collection event (DCE) tag of the source. This is a unique identifier for the observation. The initial two letters in the label identify the team responsible for the experiment, in this case, CB for the Celestial Background team. This is followed by numbers that define the observing profile, the first two digits of which denote the experiment number and the last three denote the specific observation.
The relative reference number of the source. This is an integer, only assigned to sources where more than one narrow field (IUN or IVN) source corresponds to a single IUW source. These values are relative to the DCE. For example, a source in DCE of CB10.100 that refers to a source with a relative reference value of 2 would correspond to only the source in CB10.100 that has a value of 2 in this column, and not to the source with a relative reference value of 2 in CB10.101. For example, MSX UV J061715+012248 CB11.029 has rr_number = 1 and rr_number_iuw1 = 2; the first MSX UV J061728+012033 CB11.029 entry has rr_number = 3 and rr_number_iun1 = 2, and the second MSX UV J061728+012033 CB11.029 entry has rr_number = 2, rr_number_iun1 = 3 and rr_number_iun2 = 1. The IUW detection was rr_number = 2; both MSX UV J061728+012033 CB11.029 rr_number = 3 and MSX UV J061715+012248 CB11.029 rr_number=1 are in the IUW PSF.
The magnitude of the source in the IUN 3 filter (2480 Angstrom).
The magnitude of the source in the IUN 4 filter (2310 Angstrom).
The narrow-band filter identification for the near-UV magnitude, being either IUN6 (2930 Angstrom)or IVN5 (2940 Angstrom).
The magnitude of the source in the near UV, relative to the other filters, in the filter specified by the nuv_filter_id parameter.
The wide-band filter identification for the far-UV magnitude, being either IUW3 (1320 Angstrom) or IUW6 (1560 Angstrom).
The magnitude of the source in the far UV, relative to the other filters, in the filter specified by the fuv_filter_id parameter.
The relative reference number of the IUW detection (see the description of the rr_number parameter above).
The relative reference number of the 1st IUN detection (see the description of the rr_number parameter above).
The relative reference number of the 2nd IUN detection (see the description of the rr_number parameter above).
The relative reference number of the 3rd IUN detection (see the description of the rr_number parameter above).
The relative reference number of the 4th IUN detection (see the description of the rr_number parameter above).
The SIMBAD cross-identification of the source as of 2004, if available.
The angular distance between the MSX source position and the SIMBAD cross-identification, in arcminutes.
The spectral type of the SIMBAD cross-identification.
The V magnitude of the SIMBAD cross-identification.
The B magnitude of the SIMBAD cross-idnetification.
The HEASARC Browse bbject classification, based on the spect_type parameter value.