================================================================================ TABLE II.G.6 Meaning of the Source Association Fields -------------------------------------------------------------------------------- Catalog Field and Meaning -------------------------------------------------------------------------------- 1 GCVS Type Blank Field1 Code gives meaning for Fields 2-3 if Field1 = 1 Field2 and Field3 are B mag [decimag] at max, min if Field1 = 2 Field2 and Field3 are V mag [decimag] at max, min if Field1 = 3 Field2 and Field3 are photographic mag [decimag] at max,min if Field1 = 4 Field2 and Field3 are estimated V mag [decimag] at max,min if Field1 = 5 Field2 is -999 and Field3 is 0 2 Dearborn Type Blank Obs. Field1 Code for Field2 (1,2) Field2 if Field1 is 1, Field2 is red magnitude [decimag] if Field1 is 2, Field2 is -999 Field3 0 3 Revised Type Blank AFGL Field1 Magnitude at 4.2 microns [decimag] Field2 Magnitude at 11 microns [decimag] Field3 Magnitude at 27 microns [decimag] 4 2-micron Sky Type Blank Survey Field1 K magnitude [decimag] Field2 I magnitude [decimag] Field3 0 5 Globules Type Blank (Wesselius) Field1 -999 Field2 Minimum diameter [arcsec] Field3 Maximum diameter [arcsec] 6 R C 2 Type Blank Field1 Harvard V magnitude [decimag] Field2 B_T [decimag] Field3 D_o [arcsec] 7 Stars with Type Blank em. lines Field1 V magnitude [decimag] Field2 -999 Field3 0 8 Equatorial Type Blank IR Cat. Field1 Flux density [10^-16 W cm^-2 micron] at 2.7 microns Field2 -999 Field3 0 9 UGC Type Blank Field1 Zwicky magnitude [decimag] Field2 Minimum diameter [arcsec] in B Field3 Maximum diameter [arcsec] in B 10 MCG Type Blank Field1 -999 Field2 Minimum diameter [arcsec] in B Field3 Maximum diameter [arcsec] in B 11 Strasbourg Type Blank Planetary Nebulae Field1 V magnitude of Nebula [decimag] Field2 B magnitude of Central Star [decimag] Field3 Minimum diameter of Nebula [arcsec] 12 Zwicky Type Blank Field1 Zwicky magnitude [decimag] Field2 -999 Field3 0 13 SAO Type Spectral Type Field1 V magnitude [decimag] Field2 p_g magnitude [decimag] Field3 0 14 ESO/ Type First 3 characters of object type UPPSALA Field1 B magnitude [decimag] Field2 Maximum diameter [arcsec] Field3 Minimum diameter [arcsec] 15 Bright Type Spectral Type Stars Field1 V magnitude [decimag] Field2 B-V [centimag] Field3 U-B [centimag] 16 Suspected Type Spectral Information Var. Field1 V magnitude at maximum [decimag] Field2 -999 Field3 0 17 Carbon Type Spectral Type (may be truncated) Stars Field1 p_g magnitude [decimag] Field2 V magnitude [decimag] Field3 I magnitude [decimag] 18 Gliese Type Spectral Type (may be truncated) Field1 V magnitude [decimag] Field2 B-V magnitude [millimag] Field3 U-B magnitude [millimag] 19 S Stars Type Blank Field1 p_g magnitude [decimag] Field2 V magnitude [decimag] Field3 I magnitude [decimag] 20 Parkes HII Type Blank Survey Field1 -999 Field2 Minimum diameter [arcsec] Field3 Maximum diameter [arcsec] 21 Bonn HII Type Blank Survey Field1 Flux density at 4.875 GHz (Jy) Field2 Diameter [arcsec] Field3 0 22 Blitz Type Blank Field1 Diameter [arcsec] Field2 V_CO [km/s] Field3 Peak T_A [degrees K] 23 OSU Type Blank Field1 -999 Field2 -999 Field3 Diameter [arcsec] 24 IRC Type C if 2.2-microns sources are possibly confused, blank otherwise Field1 Right ascension difference (IRC-IRAS ) [deciseconds of time] Field2 Declination difference (IRC-IRAS ) [arcsec] Field3 0 25 DDO Type Blank Field1 -999 Field2 -999 Field3 0 26 Arp Type Blank Field1 -999 Field2 -999 Field3 0 27 Markarian Type Blank Field1 -999 Field2 -999 Field3 0 28 Strong Type Object type (GAL or QSO) 5 GHz Field1 V magnitude [decimag] Field2 5 GHz flux density [deciJy] Field3 0 29 Veron-Cetty Type Object classification Veron Field1 V magnitude [decimag] Field2 Redshift x 1000 Field3 0 30 Zwicky Type Blank 8 Lists Field1 -999 Field2 -999 Field3 0 31 VV Type Blank Field1 Special flag (see below) Field2 -999 Field3 0 32 IRAS Small- Type Blank Scale Structure Field1 Hex-coded bands Field2 -999 Field3 -999 39* OSU Type Blank * Radio * Field1 Frequency * Field2 Flux [deciJy] * Field3 0 * 40 Michigan Type Class** * Spectral * Field1 Mag [decimag] * Field2 HD number [low byte] * Field3 HD number [high byte] * 41 Serendipitous Type Blank * Survey * Field1 Hex-coded SSC bands * Field2 First SSC flux density [mJy] *** * Field3 Second SSC flux density * 42 PSC II Type Blank * Field1 Hex-coded PSC bands * Field2 First PSC flux density [mJy] *** * Field3 Second PSC flux density [mJy] * 48 Virgo Type Class ** * Cluster * Catalog * Field1 B_T magnitude [decimag] * Field2 Heliocentric velocity [km/s] * (-999 when not available) * Field3 Source size 100 x log D_est(.1 arcsec) 49 Dressel Type Blank and Condon Field1 -999 Field2 -999 Field3 -999 50 Asteroids Type Blank Field1 -999 Field2 First four digits of crossing time [seconds, since 1980.0] Field3 Last four digits of crossing time ================================================================================ * Catalog numbers 33-38 reserved for internal use. ** Source name and type fields were combined to hold spectral type and class (Catalog 40), or object classification (Catalog 48). *** Flux densities given are the first two measurements in order from 12 to 100 microns. -------------------------------------------------------------------------------- VV Catalog Flags (Catalog 31) -------------------------------------------------------------------------------- Field1 Explanation 10 VV 10 has the same coordinates as VV29 in the VV Atlas. The UGC was used to confirm that the coordinate is correct for VV 29 and erronerous for VV 10. The UGC position for VV 10 = TGC 10814 was adopted. 11 The VV position is substantially different (> 400 arcsec) from positions for the object in other catalogs. The VV position has been assumed to be in error because two or more other catalogs agree on a different position. The UGC position has been adopted. 12 Same as for 11, but the OSU position has been adopted. 13 The position in the VV Atlas, and the position listed for the VV object in the OSU are in disagreement. The true position has been established to be close to that of the OSU by the use of overlay transparencies on the POSS. The OSU position has been adopted. 14 Same as for 13, but the OSU position is not very good either, so a new position has been measured (accurate to about 1 arcsec.) -999 No information given --------------------------------------------------------------------------------