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J/AJ/116/1 Southern Sky Redshift Survey (Da Costa+, 1998)
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The Southern Sky Redshift Survey.
Da Costa L.N., Willmer C.N.A., Pellegrini P.S., Chaves O.L., Rite C.,
Maia M.A.G., Geller M.J., Latham D.W., Kurtz M.J., Huchra J.P.,
Ramella M., Fairall A.P., Smith C., Lipari S.
<Astron. J. 116, 1 (1998)>
=1998AJ....116....1D
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ADC_Keywords: Galaxies, photometry ; Surveys ; Redshifts
Keywords: galaxies: distances and redshifts - galaxy: photometry
Abstract:
We report redshifts, magnitudes, and morphological classifications for
5369 galaxies with m_B_<=15.5 and for 57 galaxies fainter than this
limit, in two regions covering a total of 1.70 sr in the southern
celestial hemisphere. The galaxy catalog is drawn primarily from the
list of nonstellar objects identified in the Hubble Space Telescope
Guide Star Catalog (GSC). The galaxies have positions accurate to ~1"
and magnitudes with an rms scatter of ~0.3mag. We compute magnitudes
(m_SSRS2_) from the relation between instrumental GSC magnitudes and
the photometry by Lauberts & Valentijn. From a comparison with CCD
photometry, we find that our system is homogeneous across the sky and
corresponds to magnitudes measured at the isophotal level
~26mag/arcsec^2^. The precision of the radial velocities is ~40km/s,
and the redshift survey is more than 99% complete to the
m_SSRS2_=15.5mag limit. This sample is in the direction opposite that
of the CfA2; in combination the two surveys provide an important
database for studies of the properties of galaxies and their
large-scale distribution in the nearby universe.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 81 5369 Catalog of galaxies in the SSRS2 sample
table3.dat 79 57 Galaxies fainter than m_SSRS2_=15.5
refs.dat 57 9 Observational setups (table 1)
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See also:
I/220 : The HST Guide Star Catalog (Lasker+ 1992)
VII/203 : Las Campanas Redshift Survey (Shectman+ 1996)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- GSC GSC (Cat. <I/220>) number of the galaxy
10 A1 --- m_GSC [NSEW] Multiplicity index on GSC
12- 23 A12 --- ESO/MCG ESO (Cat. <VII/34> or MCG (Cat. <VII/100>) name
25- 26 I2 h RAh Right ascension (B1950.0)
28- 29 I2 min RAm Right ascension (B1950.0)
31- 34 F4.1 s RAs [0/60] Right ascension (B1950.0)
36 A1 --- DE- Declination sing (B1950.0)
37- 38 I2 deg DEd Declination (B1950.0)
40- 41 I2 arcmin DEm Declination (B1950.0)
43- 44 I2 arcsec DEs [0/60] Declination (B1950.0)
46- 50 F5.2 mag mSSRS2 SSRS2 magnitude (1)
52- 56 I5 km/s RV ? Radial velocity
58- 60 I3 km/s e_RV ? rms uncertainty on RV
62- 63 I2 --- Ttype de Vaucouleurs' galaxy morphology (T-types)
65 I1 --- r_RV Source for the radial velocity in refs.dat file
67- 70 A4 --- Note Note
72- 81 A10 --- NGC/IC NGC or IC (Cat. <VII/118>) name
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Note (1): mSSRS2 = 0.59mGSC + 8.42
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1 I1 --- Code Code
3- 8 A6 --- Site Site (1)
10- 13 F4.2 m Tel Telescope size
15- 30 A16 --- Det Detector
32- 35 I4 pix DetSize Detector size
37- 38 I2 um Pix Pixel size
40- 42 F3.1 arcsec slit1 Slit width
43 A1 --- --- [x]
44- 45 I2 arcsec slit2 ? Slit width
47- 50 I4 0.1nm lam1 Wavelength range
51 A1 --- --- [-]
52- 55 I4 0.1nm lam2 Wavelength range
57 I1 0.1nm FWHM FWHM
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Note (1): the site symbols are as follows:
CTIO: Cerro Tololo Inter-American Observatory
CASLEO: Complejo El Leoncito
ESO: European Southern Observatory
SAO: Smithsonian Astrophysical Observatory
LNA: Laboratorio Nacional de Astrofisica, Brazil
SAAO: South African Astronomical Observatory
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History: From AJ electronic version
References:
da Costa et al., "A complete Southern Sky Redhift Survey" 1994ApJ...424L...1D
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(End) James Marcout, Patricia Bauer [CDS] 15-Dec-1998