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J/ApJS/96/123 H-magnitudes of spiral galaxies (Tormen+ 1995)
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Beginning of ReadMe :J/ApJS/96/123 H-magnitudes of spiral galaxies (Tormen+ 1995)
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Recalibration of the H_-0.5_-magnitudes of spiral galaxies
Tormen G., Burstein D.
<Astrophys. J. Suppl. Ser. 96, 123 (1995)>
=1995ApJS...96..123T (SIMBAD/NED BibCode)
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ADC_Keywords: Galaxies, photometry ; Galaxies, IR ; Radial velocities
Keywords: galaxies : photometry - infrared: galaxies
Abstract:
The H-magnitude aperture data published by the Aaronson et al.
collaboration (See references) over a 10 year period is collected into
a homogeneous data set of 1731 observations of 665 galaxies.
Ninety-six percent of these galaxies have isophotal diameters and
axial ratios determined by the Third Reference Catalogue of Bright
Galaxies (RC3; de Vaucouleurs et al., 1991, Cat. VII/155), the most
self-consistent set of optical data currently available. The precepts
governing the optical data in the RC3 are systematically different
from those of the Second Reference Catalogue (de Vaucouleurs, de
Vaucouleurs, & Corwin 1976, Cat .VII/112), which were used by
Aaronson et al. for their original analyses of galaxy peculiar
motions. This in turn leads to systematic differences in growth curves
and fiducial H-magnitudes, prompting the present recalibration of the
near-infrared Tully-Fisher relationship. New optically normalized
H-magnitude growth curves are defined for galaxies of types S0 to Im,
from which new values of fiducial H-magnitude, H^g^_-0.5_, are
measured for the 665 galaxies. A series of internal tests show that
these four standard growth curves are defined to an accuracy of
0.05mag over the interval 1.5<=log(A/D_g_)<=-0.2. Comparisons with the
Aaronson et al. values of diameters, axial ratios, and fiducial
H-magnitudes show the expected differences, given the different
definitions of these parameters. The values of H^g^_-0.5_ are assigned
quality indices: a quality value of 1 indicates an accuracy of less
than 0.2mag, quality 2 indicates an accuracy of 0.2-0.35mag, and
quality 3 indicates an accuracy of more than 0.35mag. Revised values
of corrected H I velocity widths are also given, based on the new set
of axial ratios defined by the RC3.