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J/A+AS/106/451 Face-on disk galaxies photometry. I. (de Jong+, 1994)
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Near-infrared and optical broadband surface photometry of 86 face-on disk
dominated galaxies. I. Selection, observations and data reduction.
de Jong R.S., van der Kruit P.C.
<Astron. Astrophys. Suppl. Ser. 106, 451 (1994)>
=1994A&AS..106..451D (SIMBAD/NED Reference)
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ADC_Keywords: Photometry, surface ; Photometry, infrared
Keywords: surveys - galaxies: fundamental parameters - galaxies: photometry -
galaxies: spiral - galaxies: structure
Abstract:
We present accurate surface photometry in the B, V, R, I, H and K
passbands of 86 spiral galaxies. The galaxies in this statistically
complete sample of undisturbed spirals were selected from the UGC to
have minimum diameters of 2' and minor over major axis ratios larger
than 0.625. This sample has been selected in such a way that it can be
used to represent a volume limited sample. The observation and
reduction techniques are described in detail, especially the not often
used driftscan technique for CCDs and the relatively new techniques
using near-infrared (near-IR) arrays. For each galaxy we present
radial profiles of surface brightness. Using these profiles we
calculated the integrated magnitudes of the galaxies in the different
passbands. We performed internal and external consistency checks for
the magnitudes as well as the luminosity profiles. The internal
consistency is well within the estimated errors. Comparisons with
other authors indicate that measurements from photographic plates can
show large deviations in the zero-point magnitude. Our surface
brightness profiles agree within the errors with other CCD
measurements. The comparison of integrated magnitudes shows a large
scatter, but a consistent zero-point. These measurements will be used
in a series of forthcoming papers to discuss central surface
brightnesses, scalelengths, colors and color gradients of disks of
spiral galaxies.
Note: Corrections from erratum in A&AS 107, 419,
concerning table7, are included
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 70 16 Optical observations calibration coefficients
table2 72 4 Near-IR observations calibration coefficients
table3 85 86 Observed galaxies global UGC/RC3 parameters
table4 44 326 Observation log of optical observations
table5 44 123 Observation log of near-IR observations
table6 110 86 BVRIHK PA, b/a and integrated magnitudes
table7 67 86 Surface brightness at UGC radii and radii
at 25 B-mag/arcsec2 and 23.5 R-mag/arcsec2
params 88 480 Observational parameters
profiles 76 4463 Surface brightness profiles
(Fig.12 in the paper)
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Byte-by-byte Description of file: table1 table2
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Bytes Format Units Label Explanations
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1- 20 A20 --- Date Observation period
23- 24 A2 --- Color BVRIHKK' colors
26- 32 F7.3 --- C0 Zero-point coefficient
36- 40 F5.3 --- e_C0 rms uncertainty on C0
42- 47 F6.3 --- C1 ? color coefficient
51- 55 F5.3 --- e_C1 ? rms uncertainty on C1
58- 62 F5.3 --- C2 ? airmass coefficient
66- 70 F5.3 --- e_C2 ? rms uncertainty on C2
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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2- 10 A9 --- UGC UGC denomination
14- 23 A10 --- Name Other name
24- 25 I2 h RAh Right ascension 1950
27- 28 I2 min RAm Right ascension 1950
30- 33 F4.1 s RAs Right ascension 1950
35 A1 --- DE- Delcination sign
36- 37 I2 deg DEd Declination 1950
39- 40 I2 arcmin DEm Declination 1950
42- 43 I2 arcsec DEs Declination 1950
45- 49 F5.1 deg GLON Galactic longitude
51- 55 F5.1 deg GLAT Galactic latitude
57- 63 A7 --- UGCclass UGC classification
65- 71 A7 --- RC3class RC3 classification
73- 75 F3.1 arcmin Dmaj red UGC major axis diameter
77- 80 F4.2 --- b/a red UGC minor over major axis diameter ratio
82- 85 I4 km/s VGSR receding velocity
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Byte-by-byte Description of file: table4 table5
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Bytes Format Units Label Explanations
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1- 5 I5 --- UGC ? UGC denomination
7- 8 A2 --- Band BVRIHKK' colors
12- 19 A8 "DD/MM/YY" Obs Observation date
21- 22 I2 --- Np ? Number of position of observation
24- 29 F6.1 s ExpTime Exposition time per position
31 I1 --- Qual Photometric quality (1)
36- 38 F3.1 arcsec Seeing FWHM seeing
40- 44 A5 --- Notes See note (2)
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Note (1): Photometric quality is defined as:
1: photometric
2: 0.0-0.2 mag
3: 0.2-0.5 mag
4: 0.5-1.0 mag
5: >1.0 mag
Note (2):
1: Driftscan
2: Internal calibration
3: Calibrated using Longo and de Vaucouleurs (1983)
4: Mosaic
5, 7: JKT, GEC CCD, 0.6arcsec pixels
6, 8: JKT, RCA CCD, 0.41arcsec pixels
9: INT, GEC CCD, 0.54arcsec pixels
10: INT, EEV CCD, 0.53arcsec pixels
11: 1.3m MDM observatory, Thomson CCD, 0.48arcsec pixels
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Byte-by-byte Description of file: table6
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Bytes Format Units Label Explanations
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1- 5 I5 --- UGC UGC denomination
10- 14 F5.1 deg PA Position angle
16- 19 F4.2 --- b/a major over minor axis ratio
21- 25 F5.2 mag mB ? B magnitude
31- 34 F4.2 mag e_mB ? rms uncertainty on mB
36- 40 F5.2 mag mV ? V magnitude
46- 49 F4.2 mag e_mV ? rms uncertainty on mV
51- 55 F5.2 mag mR ? R magnitude
61- 64 F4.2 mag e_mR ? rms uncertainty on mR
66- 70 F5.2 mag mI ? I magnitude
76- 79 F4.2 mag e_mI ? rms uncertainty on mI
81- 85 F5.2 mag mH ? H magnitude
90- 93 F4.2 mag e_mH ? rms uncertainty on mH
96-100 F5.2 mag mK ? K magnitude
105-108 F4.2 mag e_mK ? rms uncertainty on mK
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Byte-by-byte Description of file: table7
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Bytes Format Units Label Explanations
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1- 5 I5 --- UGC UGC denomination
9- 13 F5.2 mag/arcsec2 Mu.B ? Surface brightness measured at the
blue UGC diameter
19- 22 F4.2 mag/arcsec2 e_Mu.B ? rms uncertainty on Mu.B
26- 30 F5.2 mag/arcsec2 Mu.R ? Surface brightness measured at the
red UGC diameter
36- 39 F4.2 mag/arcsec2 e_Mu.R ? rms uncertainty on Mu.R
42- 46 F5.1 arcsec DB25/2 ? Isophotal major axis radius at
25 B-mag/arcsec2
51- 53 F3.1 arcsec e_DB25/2 ? rms uncertainty on DB25/2
55- 59 F5.1 arcsec DR23.5/2 ? Isophotal major axis radius at
23.5 R-mag/arcsec2
64- 67 F4.1 arcsec e_DR23.5/2 ? rms uncertainty on DR23.5/2
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Byte-by-byte Description of file: params
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Bytes Format Units Label Explanations
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1- 8 A8 --- UGC Galaxy name
9- 10 A2 --- n_UGC "N2" when second extraction (1)
14- 17 F4.1 deg Incl Inclination
19- 23 F5.1 deg PA Position angle
25 A1 --- Band [UBVRIHK] Band where the data where measured
27- 32 F6.1 s ExpTime Total exposure time
35- 39 F5.2 mag MagOff Magnitude zero-point offset
42- 46 F5.2 mag MagSky Surface brightness of the sky
49- 53 F5.3 mag e_MagSky rms uncertainty on MagSky
56- 60 F5.2 mag MagTot Apparent magnitude of the galaxy
63- 67 F5.3 mag e_MagTot rms uncertainty on MagTot
71- 74 F4.2 arcsec Seeing FWHM seeing
76- 85 A10 ---- Date Observatrion date
88 I1 --- Phot [1/5] Estimated photometric quality (2)
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Note (1): N2 indicates that the luminosity profiles have been
extracted again, using only the area common to all frames. As the area
observed in the near-IR was in general smaller, these files should be
used to generate color profiles. Only UGC438N2 and UGC10445N2 indicate
a second set of independent observations.
Note (2): The photometric quality is
1) photometric
2) 0.0-0.2 mag error
3) 0.2-0.5 mag error
4) 0.5-1.0 mag error
5) >1.0 mag error
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Byte-by-byte Description of file: profiles
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Bytes Format Units Label Explanations
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1- 8 A8 --- UGC Galaxy name, as in "params"
9- 10 A2 --- n_UGC "N2" when second extraction, as in "params"
19- 21 I3 --- Row Row number
23- 27 F5.1 arcsec Rad Radius at which the surface brightness
was measured
29- 33 F5.2 mag/arcsec2 Mu.B ? Surface brightness in B band
35- 39 F5.2 mag/arcsec2 Mu.V ? Surface brightness in V band
41- 45 F5.2 mag/arcsec2 Mu.R ? Surface brightness in R band
47- 51 F5.2 mag/arcsec2 Mu.I ? Surface brightness in I band
53- 57 F5.2 mag/arcsec2 Mu.H ? Surface brightness in H band
59- 63 F5.2 mag/arcsec2 Mu.K ? Surface brightness in K band
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Historical Notes:
* 07-Sep-1994: archived table1 to table7
* 11-Mar-1995: surface profile files kindly provided by R.S. de Jong
(R.S.deJong@durham.ac.uk)
* 24-Jul-1995: Description File standardized
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(End) Patricia Bauer, Francois Ochsenbein [CDS] 24-Jul-1995