J/A+A/495/379 Optical radial velocities in A85 (Bravo-Alfaro+, 2009)
Galaxy evolution in Abell 85.
I. Cluster substructure and environmental effects on the blue galaxy population.
Bravo-Alfaro H., Caretta C.A., Lobo C., Durret F., Scott T.
<Astron. Astrophys., 495, 379-387 (2009)>
=2009A&A...495..379B 2009A&A...495..379B
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Radial velocities
Keywords: galaxies: evolution -
galaxies: clusters: individual: Abell 85, Abell 87
Abstract:
In this series of papers we explore the evolution of late-type
galaxies in the rich cluster Abell 85. In this first paper we revisit
the complex dynamical state of A 85 by using independent methods.
First, we analyze the galaxy redshift distribution towards A 85 in the
whole range 0-40000km/s, and determine the mean redshifts of the
background clusters A 87 and A 89, very close in projection to A 85.
Then we search for substructures in A 85 by considering the 2D galaxy
distribution of its members (13000-20000km/s) and by applying the
kinematical 3D Δ-test to both projected positions and radial
velocities.
Description:
We obtained position and optical magnitude data for galaxies in the A
85/87/89 complex from the SuperCOSMOS Science Archive, available from
the Royal Observatory of Edinburgh,
http://surveys.roe.ac.uk/ssa/index.html .
The area covers a region of 50 arcmin radius around the center of A
85, taken as the position of its cD galaxy, MCG-02-02-086, which also
coincides with the peak of the X-ray emission of the cluster.
Magnitudes in bJ and rF bands came from the digitization of UKST
Survey plates (IIIa-J + GG395 and IIIa-F + OG590, respectively) by the
SuperCOSMOS machine, using 10um size pixels (0.67").
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 71 42 Sample of brightest blue member galaxies of A 85
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See also:
J/MNRAS/211/637 : Abell 85 CCD observations (Murphy 1984)
J/A+AS/128/67 : BVR photometry of Abell 85 (Slezak+ 1998)
J/A+AS/129/281 : ABCG 85 velocities catalogue (Durret+ 1998)
J/A+A/489/11 : Optical view of Abell 85 filament region (Boue+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [BCL2009] Sequential number
4- 18 A15 --- Name Galaxy name
19- 20 A2 --- n_Name [* #] Notes on galaxy (1)
22 I1 h RAh Right ascension (J2000)
24- 25 I2 min RAm Right ascension (J2000)
27- 31 F5.2 s RAs Right ascension (J2000)
33 A1 --- DE- Declination sign (J2000)
34- 35 I2 deg DEd Declination (J2000)
37- 38 I2 arcmin DEm Declination (J2000)
40- 43 F4.1 arcsec DEs Declination (J2000)
45- 49 I5 km/s RV Optical radial velocity
51- 53 I3 km/s e_RV rms uncertainty on RV
55- 60 F6.3 mag bJmag bJ SuperCOSMOS magnitude
62- 66 F5.3 mag bJ-rF bJ-rF SuperCOSMOS colour index
68- 71 F4.2 Mpc Dist Projected distance to the cluster center
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Note (1): Note as follows:
* = HI detections and reported gas masses of over 109M☉
# = strong Hα emission
## = high probability of harboring an AGN
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Jun-2009