J/other/PASA/16.113 New structure in Shapley supercluster (Drinkwater+, 1999)
New structure in the Shapley supercluster
Drinkwater M.J., Proust D., Parker Q.A., Quintana H., Slezak E.
<Publications - Astron. Soc. Australia, 16, 113 (1999)>
=1999PASA...16..113D 1999PASA...16..113D
ADC_Keywords: Clusters, galaxy ; Radial velocities
Keywords: galaxies: clusters, distances and redshifts -
large-scale structure of universe
Abstract:
We present new radial velocities for 306 bright (R<16) galaxies in a
77°2 region of the Shapley supercluster, measured with the
FLAIR-II spectrograph on the UK Schmidt Telescope. The galaxies we
measured were uniformly distributed over the survey area, in contrast
to previous samples which were concentrated in several rich Abell
clusters. Most of the galaxies (230) were members of the Shapley
supercluster: they trace out two previously unknown sheets of galaxies
linking the Abell clusters of the supercluster. In a 44°2 area
of the supercluster excluding the Abell clusters, these sheets alone
represent an overdensity of a factor of 2.0±0.2 compared to a
uniform galaxy distribution. The supercluster is not flattened in the
Declination direction as has been suggested in previous papers. Within
our survey area the new galaxies contribute an additional 50% to the
known contents of the Shapley supercluster, with a corresponding
increase in its contribution to the motion of the Local Group.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 90 306 *Galaxies observed
table3.dat 37 44 *Abell clusters in the Shapley region
--------------------------------------------------------------------------------
Note on table2.dat and table3.dat: Objects are identified as
[DPP99] HHMMSS.s+DDMMSS in Simbad.
--------------------------------------------------------------------------------
See also:
J/AJ/110/463 : Kinematics of the Shapley supercluster (Quintana+ 1995)
J/A+AS/119/329 : VR photometry in the Shapley Supercluster (Slezak+, 1996)
J/A+AS/120/357 : R magnitudes in four ESO fields (Infante+, 1996)
J/A+AS/125/247 : Shapley Concentration galaxies velocities (Quintana+ 1997)
J/MNRAS/296/599 : A3558 complex redshifts (Bardelli+, 1998)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 h RAh Right ascension (B1950) (corrected)
4- 5 I2 min RAm Right ascension (B1950) (corrected)
7- 10 F4.1 s RAs Right ascension (B1950) (corrected)
12 A1 --- DE- Declination sign (B1950) (corrected)
13- 14 I2 deg DEd Declination (B1950) (corrected)
16- 17 I2 arcmin DEm Declination (B1950) (corrected)
19- 20 I2 arcsec DEs Declination (B1950) (corrected)
22- 24 I3 --- Field Field number
26- 30 F5.2 mag Rmag R magnitude
32- 36 I5 km/s RV Radial velocity (corrected)
38- 40 I3 km/s e_RV rms uncertainty on RV (corrected)
42 A1 --- n_Note [*] corrections in 2004PASA...21...89D 2004PASA...21...89D
44- 90 A47 --- Note Corrections from 2004PASA...21...89D 2004PASA...21...89D (1)
--------------------------------------------------------------------------------
Note (1): Some corrections, for positions or velocity, were published in
Drinkwater et al., 2004PASA...21...89D 2004PASA...21...89D.
Corrections (table2 of 2004PASA...21...89D 2004PASA...21...89D)
-----------------------------------------------------------------------------
B1950 from D99 New J2000 Old RV New RV Type of
correction
-----------------------------------------------------------------------------
13 04 08.4 -37 06 37 13 06 56.1 -37 22 09 position
13 12 05.7 -33 29 36 13 14 52.8 -32 45 27 position
13 14 37.9 -33 39 08 13 17 26.2 -33 55 36 position
13 15 21.3 -31 45 59 13 18 08.7 -32 01 06 position
13 18 06.6 -27 47 20 13 20 52.8 -28 13 06 position
13 19 39.1 -33 06 29 13 22 28.0 -33 29 03 position
13 24 21.4 -37 00 34 13 27 13.1 -36 25 34 position
13 24 28.2 -36 49 27 13 27 10.4 -37 05 00 position
13 29 40.1 -33 54 18 13 32 31.3 -33 09 42 position
13 31 39.7 -36 33 12 13 34 33.1 -36 48 32 15274 150 2398 17 velocity
13 33 21.5 -36 38 27 13 36 15.3 -36 53 45 15135 51 3897 79 velocity
13 35 47.0 -34 17 07 removed *
13 37 15.1 -34 05 41 13 30 06.0 -34 21 10 position
13 40 52.6 -34 49 27 13 43 46.5 -35 04 30 16227 183 14681 71 velocity
13 42 33.6 -36 31 58 13 45 29.1 -36 46 59 11531 64 7633 80 velocity
13 43 08.2 -33 29 39 13 46 01.4 -33 44 39 11662 44 24838 61 velocity
13 43 32.6 -35 50 50 removed *
-----------------------------------------------------------------------------
Note: *: Original position was wrong, but the correct
identification could not be determined
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 h RAh Right ascension (B1950)
4- 5 I2 min RAm Right ascension (B1950)
7- 8 I2 s RAs Right ascension (B1950)
10 A1 --- DE- Declination sign (B1950)
11- 12 I2 deg DEd Declination (B1950)
14- 15 I2 arcmin DEm Declination (B1950)
17- 18 I2 arcsec DEs Declination (B1950)
20- 24 I5 km/s cz ? Heliocentric radial velocity
26- 32 A7 --- Name Name
34 I1 --- Dist ? Distance in Abell radius
36- 37 A2 --- Ref Reference (1)
--------------------------------------------------------------------------------
Note (1): References are as follows:
I = Quintana et al. (1995, Cat. J/AJ/110/463, Paper I)
II = Quintana et al. (1997, Cat. J/A+AS/125/247, Paper II)
N = NASA/IPAC, Extragalactic Database (NED)
B = Bardelli et al. (1998, Cat. J/MNRAS/296/599)
--------------------------------------------------------------------------------
History:
Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 31-Mar-2000