J/ApJS/80/479 Nearby galaxy flows (Tully+, 1992)
Nearby galaxy flows modeled by the light distribution: distances, model, and
the local velocity anomaly.
Tully R.B., Shaya E.J., Pierce M.J.
<Astrophys. J. Suppl. Ser. 80, 479 (1992)>
=1992ApJS...80..479T 1992ApJS...80..479T
ADC_Keywords: Clusters, galaxy ; Redshifts
Keywords: cosmology: observations - galaxies: clustering -
galaxies: distance and redshifts
Description:
Supporting material for an article in the main journal is presented.
One table gives measured galaxy distances used to construct a map of
observed peculiar velocities, and another table gives a grid of the
distribution of light used to construct a map of expected peculiar
velocities. A preferred model was developed which gave a best fit
between these maps, and this model has been used to generate output
kinematic distances which are recorded here for groups and individual
galaxies with V0<3000km/s.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 40 288 Galaxies with distance estimates
table2.dat 62 774 Components of the mass model
notes.dat 40 42 Note to table1 and table2
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See also:
VII/145 : Nearby Galaxies Catalogue (NBG)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Group Group identification (1)
9- 18 A10 --- Gal Galaxy identification (2)
20- 22 I3 --- Memb ? Group members (3)
24- 25 I2 --- Ngal Number of total galaxies
27- 28 I2 --- Ngal2 ? Number of galaxies with distance estimates
when this number is different of Ngal (4)
30- 33 F4.1 Mpc Dist ? Distance (5)
35- 38 I4 km/s Vel ? Velocity (6)
40 A1 --- note Note (7)
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Note (1): Identification in NBG catalog. If more than one galaxy in a group
provides a distance estimate then galaxies are identified on
subsequent lines. The correspondance between the first number and the
galaxy group name are in "notes.dat" file
Note (2): Galaxies with measured distances, as named in NBG catalog. N=NGC;
U=UGC. Virgo, Ursa Major, and Fornax clusters are identified. Galaxies
with distances in the Virgo and Ursa Major clusters are identified in
Pierce & Tully 1988
Note (3): Number of galaxies in group, as compiled in NBG catalog. For
single galaxies, there is a "1" in this column. Group properties are
summarized in Tully 1987.
Note (4): Up to four separate estimates per galaxy are possible, as
explained in text. In the case of groups with multiple estimates, then
Ngal/Ngal2 means there are Ngal2 separate galaxies with distance
estimates and Ngal total estimates
Note (5): In the case of groups with estimates to several members, the
average distance is given on the first line and the individual
distance estimates (but averaged over the separate bands) are given on
subsequent lines. Position in supergalactic coordinates can be
determined by multiplying the value in NBG catalog by the ratio of
this distance and the NBG catalog distance.
Note (6): Velocity adjusted to the standard Local Group rest frame (300km/s
toward l=90, b=0) and averaged over the number of galaxies indicated
in col.(3). See Tully 1987.
Note (7): The symbol "#" indicates one of 14 cases of poor agreement
between measured and kinematic distances. Disregarded in some fits as
discussed in text.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Group Identification in NBG catalog (1)
9- 17 A9 --- Memb Number of galaxies in group (2)
20- 24 F5.2 [solLum] log(L) Luminosity (3)
26- 30 F5.1 Mpc SGX Supergalactic X coordinate
32- 36 F5.1 Mpc SGY Supergalactic Y coordinate
38- 42 F5.1 Mpc SGZ Supergalactic Z coordinate
44- 45 I2 Mpc IDist Input distance (vector sum of cols [4]-[6])
of element in light distribution map
47- 48 I2 Mpc ODist Derived distance from velocity field of
preferred model (4)
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Note (1): The correspondance between the first number and the galaxy group
name are in "notes.dat" file.
Note (2): Number of galaxies in group, as compiled in NBG catalog. Includes
galaxies directly "associated" with group. Individual galaxies outside
of groups are identified by name.
Note (3): Blue band, corrected for absorption and incompletion as a
function of distance as described in Tully (1988c)
Note (4): 58 cases (out of 776) are resolved in 22 cases by taking the
kinematic distance nearest the luminosity-line width distance and
resolved in 36 cases without measured distances by taking the
kinematic distance nearest to the input distance. (In the 22 cases
with independent distance estimates, only four choices differ)
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Gid Group designation (first number of galaxy group)
4- 40 A37 --- Text Text of note
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References:
Pierce M.J. & Tully R.B. 1988, ApJ, 330, 579 =1988ApJ...330..579P 1988ApJ...330..579P
Tully R.B. 1987, ApJ, 321, 280 =1987ApJ...321..280T 1987ApJ...321..280T
Tully R.B., 1988a, Nearby Galaxies Catalogue (NBG)
=Catalogue VII/145
Tully R.B. 1988c, AJ, 96, 73 =1988AJ.....96...73T 1988AJ.....96...73T
Historical Notes: Keypunched at CDS
(End) Marie-Jose Wagner, Patricia Bauer [CDS] 17-Apr-1996