J/A+A/393/57 Velocity field in the Local Group (Terry+, 2002)
Local velocity field from sosie galaxies I: The Peebles'model.
Terry J.N., Paturel G., Ekholm T.
<Astron. Astrophys. 393, 57 (2002)>
=2002A&A...393...57T 2002A&A...393...57T
ADC_Keywords: Galaxy catalogs ; Radial velocities
Keywords: galaxies: general - galaxies: distances and redshifts -
cosmology: distance scale - methods: statistical
Abstract:
Pratton, Melott and McKee (1997ApJ...479L..15P 1997ApJ...479L..15P) showed that the
velocity field around clusters could generate an apparent distortion
that appears as tangential structures or radial filaments. In the
present paper we determine the parameters of the Peebles' model
(1976ApJ...205..318P 1976ApJ...205..318P) describing infall of galaxies onto clusters with
the aim of testing quantitatively the amplitude of this distortion.
The distances are determined from the concept of sosie galaxies
(Paturel, 1994A&A...289..711P 1994A&A...289..711P) using 21 calibrators for which the
distances were recently calculated from two independent Cepheid
calibrations. We use both B and I-band magnitudes.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 67 283 The sample of 283 unbiased galaxies
--------------------------------------------------------------------------------
See also:
VII/119 : Catalogue of Principal Galaxies (PGC) (Paturel+ 1989)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [PGC]
4- 10 I07 --- PGC PGC number from LEDA (leda.univ-lyon1.fr)
12- 26 A15 --- Name Alternate name from LEDA
29 A1 --- --- [J]
30- 31 I2 h RAh Right Ascension (J2000)
32- 33 I2 min RAm Right Ascension (J2000)
34- 37 F4.1 s RAs Right Ascension (J2000)
38 A1 --- DE- Declination sign (J2000)
39- 40 I2 deg DEd Declination (J2000)
41- 42 I2 arcmin DEm Declination (J2000)
43- 44 I2 arcsec DEs Declination (J2000)
46- 49 I4 km/s RV Radial velocity corrected for infall velocity
of the Local Group towards Virgo
(J123049.2+122329) (Vinfall=200km/s)
51- 55 F5.2 mag Weighted mean distance modulus from B and I
bands and the method of sosies galaxies
57- 60 F4.2 mag e_ rms uncertainty on
63- 67 F5.1 deg Theta Angular distance from the Virgo center
(J123049.2+122329)
--------------------------------------------------------------------------------
Acknowledgements: Georges Paturel
(End) Patricia Bauer [CDS] 01-Aug-2002