J/AJ/108/896 Arm structure in galaxies (Magri, 1994)
Arm structure in normal spiral galaxies. I. Multivariate data for 492 galaxies
MAGRI C.
<Astron. J. 108, 896 (1994)>
=1994AJ....108..896M 1994AJ....108..896M (SIMBAD/NED Reference)
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.
Address:
Department of Astronomy and National Astronomy and Ionosphere Center,
Cornell University, Ithaca, New York 14853
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
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 Catalogue of Galaxies
number
7- 12 A6 --- Name2 Other name
14 A1 --- Sample Code for KGC galaxy subsample (1)
16- 17 I2 h RAh Right ascension 1950
18- 19 I2 min RAm Right ascension 1950
20- 23 F4.1 s RAs Right ascension 1950
25 A1 --- DE- Declination sign
26- 27 I2 deg DEd Declination 1950
28- 29 I2 arcmin DEm Declination 1950
30- 31 I2 arcsec DEs Declination 1950
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
50- 63 A14 --- MtypeRSA Morphological type, Revised Shapley-Ames
65- 79 A15 --- MTypeRC2 Morphological type, Second Reference
Catalog
81- 88 A8 --- MType Hubble morphological type, UGC
90-101 A12 --- MType rev Revised Hubble morphological type, UGC
--------------------------------------------------------------------------------
Note (1): The "sample flag" sample 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
7- 11 F5.2 arcmin MajAxis Major diameter, UGC
13- 17 F5.2 arcmin MinAxis Minor diameter, UGC
19- 22 F4.1 mag Mag Magnitude, as given in UGC
24- 27 F4.1 arcmin D25 Major diameter, 25 blue mag/arcsec2 (25 uB)
28 A1 --- n_D25 Note on diameter (1)
30- 33 F4.2 --- R25 Axial ratio at 25 uB
34 A1 --- n_R25 Note on ratio (1)
36- 39 F4.1 mag BT Total blue magnitude within 25 uB
40 A1 --- n_BT Note on total blue magnitude (1)
42- 45 F4.1 arcmin D0 Corrected blue diameter
47- 50 F4.1 mag BT0 Corrected total blue magnitude
--------------------------------------------------------------------------------
Note (1): 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
7 A1 --- l_S12 Limit flag on 12um flux density (1)
8- 12 F5.2 Jy S12 []? Flux density, 12 um
14- 15 I2 mJy e_S12 []? rms baseline noise, 12 um
17- 20 F4.2 arcmin FWHM12 []? FWHM angular diameter, 12 um
22- 23 I2 --- Code12 Detection code, 12 um (2)
25- 29 F5.2 Jy S25 []? Flux density, 25 um
31- 33 I3 mJy e_S25 []? rms baseline noise, 25 um
35- 38 F4.2 arcmin FWHM25 []? FWHM angular diameter, 25 um
40- 41 I2 --- Code25 Detection code, 25 um (2)
43- 48 F6.2 Jy S60 []? Flux density, 60 um
50- 52 I3 mJy e_S60 []? rms baseline noise, 60 um
54- 57 F4.2 arcmin FWHM60 []? FWHM angular diameter, 60 um
59- 60 I2 --- Code60 Detection code, 60 um (2)
62- 68 F7.2 Jy S100 []? Flux density, 100 um
70- 72 I3 mJy e_S100 []? rms baseline noise, 100 um
74- 77 F4.2 arcmin FWHM100 []? FWHM angular diameter, 100 um
79- 80 I2 --- Code100 Detection code, 100 um (2)
--------------------------------------------------------------------------------
Note (1): The flag is set to '<' when S12 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.)
Note (2): 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, ApJS, 68, 91
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
7- 10 I4 km/s VHel Heliocentric velocity
12- 15 I4 km/s VLG Velocity relative to Local Group barycenter
17- 20 F4.2 mJy rms rms baseline noise
22- 24 I3 km/s HI HI profile width, 50% mean signal strength
26- 28 I3 km/s VRot Computed rotation velocity
30- 35 F6.2 Jy.km/s SHI Raw HI flux
37- 42 F6.2 Jy.km/s SHICorr Corrected HI flux
44 I1 --- Tel Telescope code (1)
46 I1 --- Det Detection code (2)
48- 51 F4.1 Mpc Dist Distance
53 A1 --- l_log(HIMass) Limit flag on HI mass (3)
54- 58 F5.2 solMass log(HIMass) HI mass
60 A1 --- l_HIDef Limit flag on HI deficiency (4)
61- 65 F5.2 --- HIDef HI deficiency
--------------------------------------------------------------------------------
Note (1): 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
2 for those observed with the Arecibo flat feed.
Note (2): 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
9 for objects of unknown redshift for which a search in velocity
space was unsuccessful.
Note (3): The flag is set to '<' when the HI mass which follows is an upper
limit, and is left blank otherwise.
Note (4): 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 I5 --- UGC []? UGC number
7- 12 A6 --- Name2 Other name
13- 14 I2 h RAh Right ascension 1950
15- 16 I2 min RAm Right ascension 1950
17- 20 F4.1 s RAs Right ascension 1950
22 A1 --- DE- Sign of declination
23- 24 I2 deg DEd Declination 1950
25- 26 I2 arcmin DEm Declination 1950
27- 28 I2 arcsec DEs Declination 1950
30- 32 F3.1 arcmin MajAxis Major diameter, from UGC
34- 37 F4.2 arcmin MinAxis Minor diameter, from UGC
39- 42 F4.1 mag Mag Magnitude, from UGC
44- 46 A3 --- MType RC2-style morphological type
48- 51 I4 km/s VHel []? Heliocentric velocity
53- 56 I4 km/s VLG []? Velocity relative to Local Group
barycenter
58- 61 F4.2 mJy rms []? rms baseline noise
63- 65 I3 km/s HI []? HI profile width, 50% mean signal
strength
67- 69 I3 km/s VRot []? Computed rotation velocity
71- 75 F5.2 Jy.km/s SHI []? Raw HI flux
77- 81 F5.2 Jy.km/s SHICorr []? Corrected HI flux
83 I1 --- Tel Telescope code (1)
85 I1 --- Det Detection code (2)
87- 90 F4.1 Mpc Dist []? Distance
92 A1 --- l_log(HIMass) Limit flag on HI mass (3)
93- 97 F5.2 solMass log(HIMass) []? logarithm of the HI mass
99 A1 --- l_HIDef Limit flag on HI deficiency (4)
100-104 F5.2 --- HIDef []? HI deficiency
--------------------------------------------------------------------------------
Note (1): 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
2 for those observed with the Arecibo flat feed.
Note (2): 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 o
9 for objects of unknown redshift for which a search in velocity
space was unsuccessful.
Note (3): The flag is set to '<' when the HI mass which follows is an upper
limit, and is left blank otherwise.
Note (4): 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
7- 8 A2 --- MType Morphological type (w/bar status) on
RC2 system
9- 12 F4.1 --- LC []? Luminosity class
14- 15 A2 --- NR Non-randomness (see printed text)
17 A1 --- l_BD [<>:] Limit flag on BD
18- 20 F3.2 --- BD []? Bulge-to-disk diameter ratio
22- 26 F5.1 Mpc Dist []? Distance
28- 31 F4.2 kpc log(Diam) []? logarithm of blue diameter
33- 37 F5.2 solLum log(LB) []? logarithm of blue luminosity
39- 42 F4.2 mag B-V []? B-V color
44- 47 F4.2 mag U-B []? U-B color
49- 52 F4.2 mag B-H []? B-H (near-IR) color
54 A1 --- l_log(HIMass) [<>:] Limit flag for HI mass (1)
55- 59 F5.2 solMass log(HIMass) []? logarithm of H I mass
61 A1 --- l_HIDef [<>:] Limit flag for HIDef (1)
62- 65 F4.2 --- HIDef []? HI deficiency
66- 70 F5.2 km/s log(VRot) []? logarithm of rotation velocity
72 A1 --- l_log(LRad) [<>:] Limit flag for LRad (1)
73- 77 F5.2 solLum log(LRad) []? logarithm of 20 cm luminosity
79 A1 --- l_log(LFIR) [<>:] Limit flag for LFIR (1)
80- 84 F5.2 solLum log(LFIR) []? log of far-IR luminosity
86 A1 --- l_log(LWarm) [<>:] Limit flag for LWarm (1)
87- 91 F5.2 solLum log(LWarm) []? log of warm-dust luminosity
93 A1 --- l_log(DustMass) [<>:] Limit flag for dust mass (1)
94- 97 F4.2 solMass log(DustMass) []? Logarithm of dust mass
99 A1 --- l_W-C [<>:] Limit flag for W-C (1)
100-104 F5.2 --- W-C []? Warm/cool dust "color" (see text)
105-110 F6.2 --- Env []? Local environmental harshness
(see text)
--------------------------------------------------------------------------------
Note (1): The signs placed before several quantities are
'<' for upper limits,
'>' for lower limits,
':' for marginal detections,
blank otherwise.
--------------------------------------------------------------------------------
Origin: AAS CD-ROM series, Volume 3, 1995
(End) Lee Brotzman [ADS] 19-Oct-1994, Patricia Bauer [CDS] 16-Feb-1995