J/ApJS/107/521 Galaxies redshifts, 210<l<360, |b|<15 (Visvanathan+ 1996)
Redshift distribution of galaxies in the southern Milky way region 210°<l<360° and |b|<15°. Visvanathan N., Yamada T. <Astrophys. J. Suppl. Ser. 107, 521 (1996)> =1996ApJS..107..521V (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Redshifts ; Infrared sources Keywords: cosmology: observations - galaxies: distances and redshifts Abstract: We have carried out a redshift survey of an IRAS flux-limited (f60>0.6) galaxy sample behind the southern Milky Way, 210°<l<360° at |b|<15°. The survey includes redshifts for 951 galaxies, ∼500 of which are new. Of these 951 galaxies, 462 are in the zone 5°<b<15° and 353 are in the zone -15°<b←5°. Though the innermost region of the Milky Way (|b|=5°) remains opaque except in the longitude near 240, the detected galaxies show a high degree of completeness (∼70%) in the zones 5°<b<15° and -15°<b←5°. The cone diagrams exhibiting the detailed distribution of IRAS galaxies in the region 210°<l<360°, |b|<15° shows two clusters in the Puppis region (l=240°, b=-7°, v=2400km/s; l=245°, b=-5°, v=7500km/s), the A3627 cluster (l=325°, b=-7°; v=4500km/s), the S4 cluster (l=280°, b=7°; v=5500km/s), and a possible void at l=245°, v=3000km/s. The region 270°<l<350° is dominated by overdensity of galaxies representing the extension of the Hydra-Centaurus complex in the positive latitudes and the Pavo-Indus complex in the negative latitudes. A velocity histogram of galaxies in the GA region 290°<l<350°, |b|<15°. reveals a substantial overdensity of galaxies in the velocity range 2400-5000km/s. The centroid of this overdensity is located at 4000km/s. The broad increased density of galaxies seen in our data corresponds with the distant concentration seen at 4500km/s in the supergalactic plane survey that covers the same longitude range like ours in l, but a larger range in latitude b (-30° to -10° and +10° to +45°). This lends support to the idea that the overdensity extends all the way from the Centaurus-Hydra complex (l=302°, b=+22°) in the north to the major concentration of the Pavo-Indus supercluster (l=332°, b=-24°) in the south, through the Milky Way. We conclude that the peak of the overdensity responsible for the peculiar velocity field in the local region is possibly situated in the Milky Way itself. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 45 951 List of galaxies behind the southern Milky Way
See also: III/40 : Spectral Survey of Southern Milky Way (Loden+ 1976) VII/140 : Catalog of Galaxies Behind the Milky Way (Saito+ 1990,91) II/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986) J/A+AS/104/529 : IRAS galaxies behind the Milky Way (Takata+ 1994) J/MNRAS/287/472 : Southern Milky Way galaxies velocities (Di Nella+ 1997) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- IRAS IRAS-PSC (Cat. II/125) name 11 A1 --- Typo [*] Correction, see "History" section below 12- 17 F6.2 deg GLON Galactic longitude 19- 24 F6.2 deg GLAT Galactic latitude 26- 31 I6 km/s cz Heliocentric redshift 32 A1 --- n_cz [abcS] Note on cz (1) 34- 39 F6.2 Jy S60um Flux density at 60µm 41- 44 F4.1 mag Bmag ? B magnitude 45 A1 --- n_Bmag [c] Note on Bmag (2)
Note (1): S: radial velocity data kindly provided by W. Saunders. a: Radial velocity data kindly provided by K. B. Fisher. b: Radial velocity data listed in Yamada et al. (1993ApJS...89...57Y) c: Radial velocity taken from SIMBAD. Note (2): c: Blue magnitudes taken from SIMBAD Unfootnoted B magnitude values are estimated roughly from size for galaxies in Yamada et al. (1993ApJS...89...57Y). Magnitudes of galaxies provided by K. B. Fisher are not available.
History: Prepared via OCR at CDS. * 30-Sep-1998: 7 errors in the paper (indicated by an '*' in Typo column of table1.dat) were detected by H. Andernach () and corrected.
(End) James Marcout, Patricia Bauer [CDS] 12-May-1998
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