CDROM/AJ/V108/P0896 Arm Structure in Galaxies (Magri 1994) ================================================================================ Arm Structure in Normal Spiral Galaxies. I. Multivariate Data for 492 Galaxies Christopher Magri <1994, AJ, 108, 896> =1994AJ....108..896M ================================================================================ Abstract: Multivariate data have been collected as part of an effort to develop a new classification system for spiral galaxies, one which is not necessarily based on subjective morphological properties. A sample of 492 moderately bright northern Sa and Sc spirals was chosen for future statistical analysis. New observations were made at 20 and 21 cm; the latter data are described in detail here. IRAS fluxes were obtained from archival data. Finally, new estimates of arm pattern randomness and of local environmental harshness were compiled for most sample objects. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- author.doc 80 247 Author-supplied documentation for tables table1.dat 101 492 KGC basic data table7.dat 50 492 Raw and corrected diameters and magnitudes table8.dat 80 492 Raw IRAS data table10.dat 65 223 New HI parameters for KGC spirals table11.dat 104 42 New HI parameters for non-KGC galaxies table12.dat 110 492 Compiled data on KGC spirals notes.dat 80 211 Notes to tables 10 and 11 -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- UGC Uppsala General Cat. of Galaxies number 6 1X --- --- Blank 7-12 A6 --- Name2 Other name 13 1X --- --- Blank 14 A1 --- Sample *Code for KGC galaxy subsample 15 1X --- --- Blank 16-17 I2 h RAh Right ascension, epoch 1950 18-19 I2 min RAm R.A. 20-23 F4.1 s RAs R.A. 24 1X --- --- Blank 25 A1 --- DE- Sign, declination 26-27 I2 deg DEd Declination, epoch 1950 28-29 I2 arcmin DEm Dec. 30-31 I2 arcsec DEs Dec. 32-37 F6.2 arcmin MajAxis Major diameter 38-43 F6.2 arcmin MinAxis Minor diameter 44-48 F5.1 mag Mag Photographic magnitude, from UGC 49 1X --- --- Blank 50-63 A14 --- RSA_Type Morph. type, Revised Shapley-Ames 64 1X --- --- Blank 65-79 A15 --- RC2_Type Morph. type, Second Reference Catalog 80 1X --- --- Blank 81-88 A8 --- UGC_Hub_Type Hubble morphological type, UGC 89 1X --- --- Blank 90-101 A12 --- UGC_Rev_Type Revised Hubble morph. type, UGC -------------------------------------------------------------------------------- Notes for file: table1.dat -------------------------------------------------------------------------------- Sample: The "sample flag" is 'V' for galaxies with m = 13.2 or brighter which are in the Virgo core (within six degrees of M87); it is 'X' for galaxies which are within ten degrees of M87 but which are fainter than m = 13.2; and it is blank otherwise. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table7.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- UGC UGC number 6-11 F6.2 arcmin MajAxis Major diameter, UGC 12-17 F6.2 arcmin MinAxis Minor diameter, UGC 18-22 F5.1 mag Mag Magnitude, as given in UGC 23-27 F5.1 arcmin D25 Major diam., 25 blue mag/arcsec^2 (25 uB) 28 A1 --- f_D25 *Diameter flag 29-33 F5.2 --- R25 Axial ratio at 25 uB 34 A1 --- f_R25 *Ratio flag 35-39 F5.1 mag BT Total blue magnitude within 25 uB 40 A1 --- f_BT *Magnitude flag 41-45 F5.1 arcmin D0 Corrected blue diameter 46-50 F5.1 mag BT0 Corrected total blue magnitude -------------------------------------------------------------------------------- Notes for file: table7.dat -------------------------------------------------------------------------------- f_D25, f_R25, f_BT: The flag for any of the three RC2 photometric parameters is set equal to '*' when that parameter has been directly measured on the RC2 system for a given galaxy. If, instead, the parameter has been estimated based on statistical relationships between UGC and RC2 quantities, then the flag is left blank. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table8.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- UGC Uppsala General Cat. of Galaxies number 6 1X --- --- Blank 7 A1 --- l_Flux_12 *Limit flag on Flux_12 8-12 F5.2 Jy Flux_12 []? Flux density, 12 um 13-15 I3 mJy RMS_12 []? RMS baseline noise, 12 um 16-20 F5.2 arcmin FWHM_12 []? FWHM angular diameter, 12 um 21-23 I3 --- Code_12 *Detection code, 12 um 24-29 F6.2 Jy Flux_25 []? Flux density, 25 um 30-33 I4 mJy RMS_25 []? RMS baseline noise, 25 um 34-38 F5.2 arcmin FWHM_25 []? FWHM angular diameter, 25 um 39-41 I3 --- Code_25 *Detection code, 25 um 42-48 F7.2 Jy Flux_60 []? Flux density, 60 um 49-52 I4 mJy RMS_60 []? RMS baseline noise, 60 um 53-57 F5.2 arcmin FWHM_60 []? FWHM angular diameter, 60 um 58-60 I3 --- Code_60 *Detection code, 60 um 61-68 F8.2 Jy Flux_100 []? Flux density, 100 um 69-72 I4 mJy RMS_100 []? RMS baseline noise, 100 um 73-77 F5.2 arcmin FWHM_100 []? FWHM angular diameter, 100 um 78-80 I3 --- Code_100 *Detection code, 100 um -------------------------------------------------------------------------------- Notes for file: table8.dat -------------------------------------------------------------------------------- l_Flux_12: The flag is set to '<' when Flux_12 represents an upper limit taken from PSC; otherwise it is left blank. (Note that it is left blank for upper limits NOT taken from PSC.) Code_12, Code_25, Code_60, Code_100: The four detection codes are 0 for nondetections; 1 for good detections; 2 for marginal detections; 3 for improbable detections; 4 for PSC/SSSC detections which are probably confused; 5 for spirals mapped by Rice et al. (1988); 6 for unconfused PSC data; 7 for unconfused SSSC data; 8 for one galaxy (UGC 6962) for which existing IRAS data were not coadded; and -1 for objects not observed by IRAS. See printed article for details. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table10.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- UGC UGC number 6-10 I5 km/s V_Hel Heliocentric velocity 11-15 I5 km/s V_LG Vel. relative to Local Group barycenter 16-20 F5.2 mJy RMS RMS baseline noise 21-24 I4 km/s Width HI profile width, 50% mean signal strength 25-28 I4 km/s V_Rot Computed rotation velocity 29-35 F7.2 Jy.km/s Flux Raw HI flux 36-42 F7.2 Jy.km/s Corr_Flux Corrected HI flux 43-44 I2 --- Tel_Code *Telescope code 45-46 I2 --- Det_Code *Detection code 47-51 F5.1 Mpc Dist Distance 52 1X --- --- Blank 53 A1 --- l_M_HI *HI mass limiting character 54-58 F5.2 --- M_HI Logarithm of the HI mass (solar units) 59 1X --- --- Blank 60 A1 --- l_Def *HI deficiency limiting character 61-65 F5.2 --- Def HI deficiency -------------------------------------------------------------------------------- Notes for file: table10.dat -------------------------------------------------------------------------------- Tel_Code: The telescope code (code "C" in the printed article) is 0 for spirals observed with either of the two dual-circular feeds at Arecibo; 1 for those observed with the 91 m Green Bank dish; and 2 for those observed with the Arecibo flat feed. Det_Code: The detection code (code "D" in the printed article) is 0 for nondetections; 1 for good detections; 2 for marginal detections; 3 for confused detections; 4 for spirals whose spectra show HI absorption; and 9 for objects of unknown redshift for which a search in velocity space was unsuccessful. l_M_HI: The flag is set to '<' when the HI mass which follows is an upper limit, and is left blank otherwise. l_Def: The flag is set to '>' when the HI deficiency which follows it is a lower limit, and is left blank otherwise. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table11.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 A5 --- UGC UGC number 6 1X --- --- Blank 7-12 A6 --- Name2 Other name 13-14 I2 h RAh Right ascension, epoch 1950 15-16 I2 min RAm R.A. 17-20 F4.1 s RAs R.A. 21 1X --- --- Blank 22 A1 --- DE- Sign of declination 23-24 I2 deg DEd Declination, epoch 1950 25-26 I2 arcmin DEm Dec. 27-28 I2 arcsec DEs Dec. 29-32 F4.1 arcmin MajAxis Major diameter, from UGC 33-37 F5.2 arcmin MinAxis Minor diameter, from UGC 38-42 F5.1 mag Mag Magnitude, from UGC 43 1X --- --- Blank 44-46 A3 --- Type RC2-style morphological type 47-51 I5 km/s V_Hel []? Heliocentric velocity 52-56 I5 km/s V_LG []? Velocity relative to Local Group barycenter 57-61 F5.2 mJy RMS []? RMS baseline noise 62-65 I4 km/s Width []? HI profile width, 50% of mean signal strength 66-69 I4 km/s V_Rot []? Computed rotation velocity 70-75 F6.2 Jy.km/s Flux []? Raw HI flux 76-81 F6.2 Jy.km/s Corr_Flux []? Corrected HI flux 82-83 I2 --- Tel_Code *Telescope code 84-85 I2 --- Det_Code *Detection code 86-90 F5.1 Mpc Dist []? Distance 91 1X --- --- Blank 92 A1 --- l_M_HI *HI mass flag 93-97 F5.2 --- M_HI []? Logarithm of the HI mass (solar units) 98 1X --- --- Blank 99 A1 --- l_Def *HI deficiency flag 100-104 F5.2 --- Def []? HI deficiency -------------------------------------------------------------------------------- Notes for file: table11.dat -------------------------------------------------------------------------------- Tel_Code: The telescope code (code "C" in the printed article) is 0 for spirals observed with either of the two dual-circular feeds at Arecibo; 1 for those observed with the 91 m Green Bank dish; and 2 for those observed with the Arecibo flat feed. Det_Code: The detection code (code "D" in the printed article) is 0 for nondetections; 1 for good detections; 2 for marginal detections; 3 for confused detections; 4 for spirals whose spectra show HI absorption; and 9 for objects of unknown redshift for which a search in velocity space was unsuccessful. l_M_HI: The flag is set to '<' when the HI mass which follows is an upper limit, and is left blank otherwise. l_Def: The flag is set to '>' when the HI deficiency which follows it is a lower limit, and is left blank otherwise. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table12.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 I5 --- UGC UGC number 6 1X --- --- Blank 7- 8 A2 --- Type Morph. type (w/ bar status) on RC2 system 9-12 F4.1 --- LC []? Luminosity class 13 1X --- --- Blank 14-15 A2 --- NR Non-randomness (see printed text) 16 1X --- --- Blank 17 A1 --- l_B_D *[<>:] Limit flag for l_B_D 18-20 F3.2 --- B_D []? Bulge-to-disk diameter ratio 21-26 F6.1 Mpc Dist []? Distance 27-31 F5.2 kpc Diam []? Logarithm of blue diameter 32-37 F6.2 Lsun L_B []? Logarithm of blue luminosity 38-42 F5.2 mag B-V []? B-V color 43-47 F5.2 mag U-B []? U-B color 48-52 F5.2 mag B-H []? B-H (near-IR) color 53 1X --- --- Blank 54 A1 --- l_M_HI *[<>:] Limit flag for l_M_HI 55-59 F5.2 Msun M_HI []? logarithm of H I mass 60 1X --- --- Blank 61 A1 --- l_Def *[<>:] Limit flag for Def 62-65 F4.2 --- Def []? H I deficiency 66-70 F5.2 km/s V_Rot []? logarithm of rotation velocity 71 1X --- --- Blank 72 A1 --- l_L_Rad *[<>:] Limit flag for L_Rad 73-77 F5.2 Lsun L_Rad []? logarithm of 20 cm luminosity 78 1X --- --- Blank 79 A1 --- l_L_FIR *[<>:] Limit flag for L_FIR 80-84 F5.2 Lsun L_FIR []? Log of far-IR luminosity 85 1X --- --- Blank 86 A1 --- l_L_Warm *[<>:] Limit flag for L_Warm 87-91 F5.2 Lsun L_Warm []? Log of warm-dust luminosity 92 1X --- --- Blank 93 A1 --- l_M_Dust *[<>:] Limit flag for M_Dust 94-97 F4.2 Msun M_Dust []? Logarithm of dust mass 98 1X --- --- Blank 99 A1 --- l_W-C *[<>:] Limit flag for W-C 100-104 F5.2 --- W-C []? Warm/cool dust "color" (see text) 105-110 F6.2 --- Env []? local environmental harshness (see text) -------------------------------------------------------------------------------- Notes for file: table12.dat -------------------------------------------------------------------------------- l_B_D, l_M_HI, l_Def, l_L_Rad, l_L_FIR, l_L_Warm, l_M_Dust, l_W-C: The SIGNs placed before several quantities are '<' for upper limits, '>' for lower limits, ':' for marginal detections, and blank otherwise. -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 19-Oct-1994