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J/ApJ/676/184       Peculiar motion away from the Local Void      (Tully+, 2008)

Our peculiar motion away from the Local Void. Tully R.B., Shaya E.J., Karachentsev I.D., Courtois H.M., Kocevski D.D., Rizzi L., Peel A. <Astrophys. J., 676, 184-205 (2008)> =2008ApJ...676..184T
ADC_Keywords: Galaxies, nearby ; Photometry ; Space velocities Keywords: dark matter - galaxies: distances and redshifts - large-scale structure of universe Abstract: The peculiar velocity of the Local Group of galaxies manifested in the cosmic microwave background dipole is found to decompose into three dominant components. The three components are clearly separated because they arise on distinct spatial scales and are fortuitously almost orthogonal in their influences. The nearest, which is distinguished by a velocity discontinuity at ∼7Mpc, arises from the evacuation of the Local Void. We lie in the Local Sheet that bounds the void. Random motions within the Local Sheet are small, and we advocate a reference frame with respect to the Local Sheet in preference to the Local Group. Description: Our database is an outgrowth of the Nearby Galaxies Catalog (Tully 1988, Cat. VII/145), and for the current discussion has the same limit of 3000km/s. At present we have distance estimates for 1791 galaxies in 743 groups in this volume derived from four different methods. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 202 1791 Distance estimates for 1791 galaxies (from erratum, 2008, ApJ, 686, 1523) table2.dat 159 743 Averaged distance estimates for 743 groups
See also: VII/145 : Nearby Galaxies Catalogue (NBG) (Tully 1988) VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of Right Ascension (J2000) 3- 4 I2 min RAm Minute of Right Ascension (J2000) 5- 8 F4.1 s RAs Second of Right Ascension (J2000) 9 A1 - DE- Sign of the Declination (J2000) 10- 11 I2 deg DEd Degree of Declination (J2000) 12- 13 I2 arcmin DEm Arcminute of Declination (J2000) 14- 15 I2 arcsec DEs Arcsecond of Declination (J2000) 17- 23 I7 --- PGC Principal Galaxies Catalogue name (leda.univ-lyon1.fr) 25- 35 A11 --- Name Common name 37- 40 I4 --- GrID Group ID for cross reference with Table 2 42- 49 A8 --- NBG Nearby Galaxies Catalog filament/group ID 52- 59 F8.4 deg GLON Galactic longitude 61- 68 F8.4 deg GLAT Galactic latitude 70- 77 F8.4 deg SGL [0,360[ Supergalactic longitude 79- 86 F8.4 deg SGB [-90,+90] Supergalactic latitude 89- 90 I2 --- T Numeric morphological code 92- 96 F5.3 mag E(B-V) Differential Galactic Reddening (Schlegel et al., 1998ApJ...500..525S) 98-102 F5.2 mag BT Total B magnitude, mostly from 3rd Reference Catalogue (Cat. VII/155) 105-108 I4 km/s HRV ? Heliocentric radial velocity 110-113 I4 km/s VGSR ? Velocity in the Galactic standard of rest 115-118 I4 km/s VLS ? Velocity in the Local Sheet reference frame 120-123 I4 km/s VCMB ? Velocity in the CMB reference frame 127-130 F4.2 --- b/a [0,1]? Ratio of minor axis to major axis 132 I1 --- Nb/a ? Number of sources for the measurement of axial ratio 134-138 F5.2 mag Bmag ? Total B magnitude from CCD area photometry 140-144 F5.2 mag Rmag ? Total R magnitude from CCD area photometry 146 I1 --- NR ? Number of sources for R magnitude 148-152 F5.2 mag Imag ? Total I magnitude from CCD area photometry 154 I1 --- NI ? Number of sources for I magnitude 156-160 F5.2 mag Hap ? H -0.5 aperture magnitude 162 I1 --- NH ? Number of sources for H magnitude 164-167 I4 km/s HVHI ? Heliocentric velocity from HI observations 169-171 I3 km/s W20 ? HI linewidth at 20% of peak intensity 175-179 F5.2 mag DMLL ? Distance modulus from the luminosity-linewidth method 181-184 F4.2 mag e_DMLL ? Uncertainty in DMLL 187-191 F5.2 mag DMFG ? Distance modulus if in the Flat Galaxy - 2MASS sample (see Cat. J/other/BSAO/57.5) 194-198 F5.2 mag DMSRC ? SBF, TRGB, and/or Cepheid distance modulus (G1) 200-202 A3 --- r_DMSRC [src ] Method used for DMSRC (G1)
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- GrID Group identification number 6- 13 A8 --- NBG Nearby Galaxies Catalog filament/group ID 17- 22 F6.2 deg GLON Galactic longitude 24- 29 F6.2 deg GLAT Galactic latitude 32- 37 F6.2 deg SGL [0,360[ Supergalactic longitude 39- 44 F6.2 deg SGB [-90,+90] Supergalactic latitude 47- 51 F5.2 [solLum] logLB Log of B absolute luminosity for group at measured distance 54- 57 I4 km/s HRV Heliocentric radial velocity of group 59- 62 I4 km/s VGSR Velocity of group in the Galactic standard of rest 64- 67 I4 km/s VLS Velocity of group in the Local Sheet reference frame 69- 72 I4 km/s VCMB Velocity of group in the CMB reference frame 76- 80 F5.2 mag DM Distance modulus of group, weighted average all measures 82- 85 F4.2 mag e_DM Uncertainty in DM 88- 92 F5.1 Mpc Dist Distance, weighted average all measures 94- 98 F5.1 Mpc SGX Component of distance aligned with supergalactic X 100-104 F5.1 Mpc SGY Component of distance aligned with supergalactic Y 106-110 F5.1 Mpc SGZ Component of distance aligned with supergalactic Z 112-116 I5 km/s Vpec Peculiar velocity, Vpec = VLS - 74 Dist 119-120 I2 --- NLL ? Number of luminosity-linewidth distance measures 122-126 F5.2 mag DMLL ? Distance modulus, averaged luminosity-linewidth measures 128-131 F4.2 mag e_DMLL ? Uncertainty in DMLL 133-134 I2 --- NFG ? Number of distance measures from Flat Galaxy sample 136-140 F5.2 mag DMFG ? Distance modulus, averaged Flat Galaxy sample 142-145 F4.2 mag e_DMFG ? Uncertainty in DMFG 147-148 I2 --- NSRC ? Number of SBF, TRGB, or Cepheid distance measures 150-154 F5.2 mag DMSRC ? Distance modulus, average of SBF, TRGB, Cepheid measures (G1) 156-159 F4.2 mag e_DMSRC ? Uncertainty in DMSRC
Global Notes: Note (G1): Methods are: s = Surface Brightness Fluctuation method (SBF) r = tip of the red giant branch method (TRGB) c = Cepheid method
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 28-Jul-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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