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J/ApJ/622/217        Light and motion in the local volume       (Whiting+, 2005)

Light and motion in the local volume. Whiting A.B. <Astrophys. J., 622, 217-234 (2005)> =2005ApJ...622..217W
ADC_Keywords: Galaxies, photometry ; Radial velocities Keywords: dark matter - galaxies: kinematics and dynamics - large-scale structure of universe Abstract: Using high-quality data on 149 galaxies within 10Mpc, I find no correlation between luminosity and peculiar velocity at all. There is no unequivocal sign on scales of 12Mpc of the expected gravitational effect of the brightest galaxies, in particular infall toward groups, or of infall toward the supergalactic plane on any scale. Either dark matter is not distributed in the same way as luminous matter in this region, or peculiar velocities are not due to fluctuations in mass. The sensitivity of peculiar velocity studies to the background model is highlighted. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 111 149 Local Volume data table2.dat 111 21 Additional Local Volume data refs.dat 118 100 References table4.dat 39 170 Derived Local Volume data
Byte-by-byte Description of file: table1.dat table2.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Source name 11- 16 F6.2 deg SGLON Supergalactic longitude 18- 23 F6.2 deg SGLAT Supergalactic latitude 25- 30 F6.1 km/s RV Radial velocity 32- 35 F4.1 km/s e_RV ? Error in RV 37- 39 I3 --- r_RV Source for RV 41- 45 F5.3 Mpc Dist Distance 47- 51 F5.3 Mpc e_Dist ? Error in Dist 53- 62 A10 --- r_Dist Comma separated list of sources for Dist 64- 82 A19 --- Method Method used to determine Dist (1) 84- 88 F5.3 --- Av Absorption 90- 94 F5.2 mag Bmag ? NED apparent B band magnitude 96-100 F5.2 mag Kmag ? NED apparent K band magnitude 102-105 F4.2 mag e_Kmag ? Error in Kmag 107-111 A5 --- r_Kmag Comma separated list of source for Kmag
Note (1): Method used to determine Dist, defined as follows: TRGB = tip of the red giant branch (sometimes using the SDSS filters or K, and noted as such); TRGB* = (uncertain) tip of the red giant branch; HB = horizontal branch; CMD = color-magnitude diagram; RRL = RR Lyraes; Ceph = Cepheids; Clump or RC = red clump; EB = eclipsing binaries; Geo = a geometric method using masers stars = brightest stars; SBF = surface-brightness fluctuations; rv = radial-velocity (assuming zero peculiar velocity and applying the kinematic model derived in this paper); TF = Tully-Fisher relation. The absorption for Circinus was taken from Freeman et al. (1977A&A....55..445F), all others from Schlegel et al. (1998ApJ...500..525S) by way of NED.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Ref Reference number 5- 23 A19 --- Bibcode Bibcode 25- 49 A25 --- Aut Author's name 51-118 A68 --- Com Comment
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Source name 11- 16 F6.2 mag BMAG Derived absolute B band magnitude (1) 18- 21 F4.2 mag e_BMAG Uncertainty in BMAG (2) 23- 28 F6.2 mag KMAG Derived absolute K band magnitude (1) 30- 33 F4.2 mag e_KMAG Uncertainty in KMAG (2) 35- 38 I4 km/s PRV Peculiar radial velocity (3)
Note (1): Galaxies for which no photometric data were available were arbitrarily assigned an absolute magnitude of -10. Their listed uncertainties, which are not used in any calculations, show the effect of distance uncertainties alone. Note (2): Takes into account distance and photometric errors. Note (3): Relative to the best-fit isotropic expansion.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 01-Sep-2005
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