J/MNRAS/415/1935 I-band photometry of cosmic flows (Courtois+, 2011)
Cosmic flows: University of Hawaii 2.2-m I-band photometry.
Courtois H.M., Tully R.B., Heraudeau P.
<Mon. Not. R. Astron. Soc., 415, 1935-1942 (2011)>
=2011MNRAS.415.1935C 2011MNRAS.415.1935C (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Galaxies, photometry
Keywords: astronomical data bases: miscellaneous - catalogues -
galaxies: distances and redshifts - galaxies: photometry
Abstract:
Within the "Cosmic Flows" project, I-band photometry of 524 relatively
nearby galaxies has been carried out over the course of several years
with the University of Hawaii 2.2-m telescope and a camera with a
7.5-arcmin field of view. The primary scientific goal was to provide
global magnitudes and inclinations for galaxies for the purpose of
measuring distances through the correlation between galaxy
luminosities and rotation rates. The 1σ accuracy on a total
magnitude is 0.08mag. The observations typically extend to 7-8
exponential disc scalelengths, so the data are useful for studies of
the structural properties of galaxies.
Description:
The material discussed here has been obtained since 2000, mostly since
2006, at the University of Hawaii (UH) 2.24-m telescope using a Tek
2048 CCD.
Most of the observations were made through a filter that approximated
Cousins I with a standard integration of 300s.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 109 524 Parameters of the photometry
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See also:
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
VII/238 : HYPERLEDA. II. Homogenized HI data (Paturel+, 2003)
J/AJ/112/2471 : The Ursa Major cluster. I. (Tully+ 1996)
J/ApJ/533/744 : Calibration of the Tully-Fischer relation (Tully+, 2000)
J/MNRAS/414/2005 : Cosmic flows from GBT and Parkes HI (Courtois+, 2011)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- PGC Principal Galaxies Catalogue number,
(Cat. VII/237)
9- 11 I3 s Exp Total exposure time
13 I1 --- Nexp Number of exposures
15- 17 I3 arcsec a27 Radius at 27mag/arcsec2
19- 23 F5.2 mag m27 Magnitude within 27mag/arcsec2 isophote
25- 29 F5.2 mag mtot Total asymptotic magnitude
32- 35 F4.2 mag e_mtot Uncertainty in total magnitude
37- 41 F5.2 mag/arcsec2 SB0 Extrapolated exponential disc central
surface brightness
43- 47 F5.2 arcsec alpha Exponential disc scalelength
50- 53 F4.2 --- b/a Ratio of minor to major axis dimensions
56- 59 F4.2 --- e_b/a Error in b/a
61- 63 I3 deg PA Position angle of major axis, east of north
65- 67 I3 arcsec a80 Major axis radius containing 80% of light
69- 73 F5.2 mag/arcsec2 SB80 Surface brightness at radius a80
75- 76 I2 arcsec ae Major axis radius containing 50% of light
(effective radius)
78- 82 F5.2 mag/arcsec2 SBe Surface brightness at radius ae
84- 88 F5.2 mag/arcsec2 avSBe Average surface brightness within effective
radius ae
90- 91 I2 arcsec a20 Major axis radius containing 20% of light
93- 97 F5.2 mag/arcsec2 SB20 Surface brightness at radius a20
99-103 F5.2 mag/arcsec2 avSB20 Average surface brightness within effective
radius a20
106-109 F4.1 --- C82 Concentration index a80/a20
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Mar-2012