J/ApJS/126/271 Surface photometry of nearby field galaxies (Jansen+ 2000)
Surface photometry of nearby field galaxies: the data.
Jansen R.A., Franx M., Fabricant D., Caldwell N.
<Astrophys. J. Suppl. Ser. 126, 271 (2000)>
=2000ApJS..126..271J 2000ApJS..126..271J
ADC_Keywords: Surveys ; Galaxies, photometry ; Photometry, surface
Keywords: atlases - galaxies: fundamental parameters - galaxies: photometry -
galaxies: stellar content - surveys
Abstract:
We have obtained integrated spectra and multifilter photometry for a
representative sample of ∼200 nearby galaxies. These galaxies span the
entire Hubble sequence in morphological type, as well as a wide range
of luminosities (MB=-14 to -22) and colors (B-R=0.4-1.8). Here we
describe the sample selection criteria and the U, B, R surface
photometry for these galaxies. The spectrophotometric results will be
presented in a companion paper (Cat. J/ApJS/126/331).
Description:
The photometric observations reported here were made with CCD cameras
at the F. L. Whipple Observatory's 1.2m telescope. he data were
obtained during 50 dark nights between 1994 March and 1997 March.. We
obtained B and R images with the front-side illuminated CCD. Beginning
in 1995 October, the back-side illuminated CCD camera was
commissioned, allowing U exposures. The U and B filters closely follow
the Johnson system, while the R filter follows the Cousins system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 121 198 Identification and Global Parameters of the
Sample Galaxies
table3.dat 142 198 Photometric Measurements and Parameters
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See also:
J/ApJS/126/331 : Spectrophotometry of Nearby Field Galaxies (Jansen+ 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- NFGS Sequential number
5- 17 A13 --- Name Galaxy name
18 A1 --- n_Name [)] ): galaxies that are not part of
the statistical sample
19- 23 I5 --- UGC ? UGC number
24 A1 --- m_UGC Multiplicity index on UGC
26- 27 I2 h RAh Digital Sky Survey Right ascension (B1950)
29- 30 I2 min RAm Digital Sky Survey Right ascension (B1950)
32- 35 F4.1 s RAs Digital Sky Survey Right ascension (B1950)
37 A1 --- DE- Digital Sky Survey Declination sign (B1950)
38- 39 I2 deg DEd Digital Sky Survey Declination (B1950)
41- 42 I2 arcmin DEm Digital Sky Survey Declination (B1950)
44- 47 F4.1 arcsec DEs Digital Sky Survey Declination (B1950)
49- 55 F7.3 deg GLON Galactic longitude
57- 63 F7.3 deg GLAT Galactic latitude
65- 66 I2 --- TTyp0 Original morphological type (1)
68- 69 I2 --- TTyp1 New morphological type
71- 76 A6 --- MType Morphological type
78- 82 I5 km/s cz Heliocentric redshift
84- 88 I5 km/s VLG Local Group systemic velocity
90- 95 F6.2 mag ZMAG Absolute Z magnitude
97-100 F4.2 arcmin amaj Blue semi-major axis diameter
102-106 F5.3 --- eps Ellipticity (1-b/a)
108-110 I3 deg PA ? Position angle of the major axis,
measured from north through east
112-115 F4.2 mag Ag B-filter Galactic foreground extinction
117-121 A5 --- Data [inUBR-] Available data (2)
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Note (1): Unclassified spirals (S...?) are indicated by numeric type 20.
Note (2): i, n, U, B, and R indicate integrated and nuclear spectra and
U, B, and R surface photometry, respectively
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- NFGS Sequential number
5- 17 A13 --- Name Galaxy name
18 A1 --- n_Name [)] ): galaxies that are not part of
the statistical sample
19- 23 I5 --- UGC ? UGC number
24 A1 --- m_UGC Multiplicity index on UGC
26- 30 F5.1 Mpc Dist Distance derived from the Virgocentric flow
corrected velocities with respect to the
centroid of the Local Group
32- 36 F5.2 mag Btot Total B magnitude
38- 41 F4.2 mag e_Btot rms uncertainty on Btot
43- 48 F6.2 mag BTOT Absolute total B magnitude
50- 53 F4.2 mag e_BTOT rms uncertainty on BTOT
55- 60 F6.2 arcsec rB26 Elliptical radius at which the surface
brightness has dropped to
µB=26mag/arcsec2
62- 66 F5.2 arcsec e_rB26 rms uncertainty on rB26
68- 72 F5.2 mag B26 Isophotal magnitude at
µB=26mag/arcsec2
74- 77 F4.2 mag e_B26 rms uncertainty on B26
79- 83 F5.2 arcsec rBe Effective (half-light) elliptical radius
in B band
85- 88 F4.2 arcsec e_rBe rms uncertainty on rBe
90- 94 F5.2 mag/arcsec2 SuBrBe Effective surface brightness in B band
at radius rBe
96- 99 F4.2 mag/arcsec2 e_SuBrBe rms uncertainty on SuBrBe
101-105 F5.2 mag (U-B)e ? Effective (U-B) colour index as measured
within the effective radii in B, rBe
107-110 F4.2 mag e_(U-B)e ? rms uncertainty on (U-B)e
112-115 F4.2 mag (B-R)e Effective (B-R) colour index as measured
within the effective radii in B, rBe
117-120 F4.2 mag e_(B-R)e rms uncertainty on (B-R)e
122-126 F5.2 mag D(U-B) ? U-B colour index difference (1)
128-131 F4.2 mag e_D(U-B) ? rms uncertainty on D(U-B)
133-137 F5.2 mag D(B-R) B-R colour index difference (1)
139-142 F4.2 mag e_D(B-R) rms uncertainty on D(B-R)
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Note (1): Colour index difference, between the inner and outer parts of the
galaxy, as defined as
D(U-B)=(U-B)25-75 - (U-B)25, where (U-B)25 is the (U-B) measure
in the central region of the galaxy that contains 25% of the light,
and (U-B)25-75 the (U-B) measure in the next region that contains
the next 50% of the light.
If D(U-B) is negative, the inner parts of the galaxy are redder than
the outer parts.
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History:
* 25-Oct-2004: From electronic version of the journal
* 11-Dec-2005: NGC number of NFGS#153 corrected in table1
NGC number of NFGS#143 corrected in table3
(End) Patricia Vannier [CDS] 25-Oct-2004