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J/A+A/337/17        Redshift survey between A548 and A3367   (Andreuzzi+, 1998)

A redshift survey between the clusters of galaxies A 548 and A 3367. Andreuzzi G., Bardelli S., Scaramella R., Zucca E. <Astron. Astrophys. 337, 17 (1998)> =1998A&A...337...17A
ADC_Keywords: Clusters, galaxy ; Redshifts Keywords: galaxies: clusters: individual: A 548; A 3367 - galaxies: clusters: general - galaxies: distances and redshifts Abstract: In this paper we present the results of a spectroscopic survey of galaxies in an area between the two clusters of galaxies A548 and A3367, suspected to be a close and interacting pair. With the use of multifiber spectroscopy, we measured 180 new velocities of galaxies in the central part of A 3367 and in the external regions of A 548. The redshift histogram shows the presence of three velocity peaks, at v∼12000km/s, v∼30000km/s and v∼40000km/s, respectively. For these we estimate the density excess, the mean velocity, and the velocity dispersion. The first clump corresponds to an elongation of A 548: in particular we found a correspondence between the features of this peak and the substructures of A 548. The second peak has a velocity dispersion which is typical of clusters and the distribution of its members on the plane of the sky corresponds to the highest density peak in A 3367. We therefore suggest that the name A 3367 has to be attributed to this clump. Our general conclusion is that, differently from expected, A 548 and A 3367 do not form a close pair of merging clusters, since the two structures are at significantly different redshifts. Moreover, we found that the complex dynamical structure of A 548 has large coherence, with a projected extension in the range of 1-3h-1Mpc. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tables.dat 58 180 Velocities (tables 2 to 7)
Byte-by-byte Description of file: tables.dat
Bytes Format Units Label Explanations
1- 4 A4 --- Field Field designation (1) 6- 7 I2 h RAh Right ascension (J2000) 9- 10 I2 min RAm Right ascension (J2000) 12- 15 F4.1 s RAs Right ascension (J2000) 17 A1 --- DE- Declination sign (J2000) 18- 19 I2 deg DEd Declination (J2000) 21- 22 I2 arcmin DEm Declination (J2000) 24- 27 F4.1 arcsec DEs Declination (J2000) 29- 32 F4.1 mag bJ bJ magnitude 34- 38 I5 km/s HVabs ? Absorption line heliocentric velocity 40- 42 I3 km/s e_HVabs ? rms uncertainty on HVabs 44- 49 I6 km/s HVem ? Emission line heliocentric velocity 51- 53 I3 km/s e_HVem ? rms uncertainty on HVemi 55- 58 A4 --- Note [abcd ] Presence of emission lines (2)
Note (1): * F51a, F51b (F51 centered at 05:49:24-24:35:00 (J2000), * F52 (centered at 05:49:00-25:00:00 (J2000), * F53 (centered at 05:49:24-24:10:00 (J2000), * F61 (centered at 05:50:46-25:09:47 (J2000), * F62 (centered at 05:50:46-24:39:52 (J2000) Note (2): the symbols are: a = [OII]λ3727Å b = [Oβ]λ4861Å c = [OIII]λ4959Å d = [OIII]λ5007Å
History: Prepared via OCR at CDS. * 13-Jun-2003: One error communicated by H. Andernach (record#69)
(End) James Marcout, Patricia Bauer [CDS] 28-May-1999
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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