Results 11 to 20 of about 4,958 (312)
The 2dF Galaxy Redshift Survey: spectra and redshifts [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 The 2dF Galaxy Redshift Survey (2dFGRS) is designed to measure redshifts for approximately 250 000 galaxies. This paper describes the survey design, the spectroscopic observations, the redshift measurements and the survey data base. The 2dFGRS uses the 2dF multifibre spectrograph on the Anglo-Australian Telescope, which is capable of observing 400 ...
Colless, Matthew +29 more
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Redshift Survey of 12 Moderate-redshift Clusters
Research Notes of the AAS, 2022 Abstract We conducted a redshift survey of 12 X-ray selected clusters in the redshift range z = 0.35–0.50 with MMT/Hectospec. The redshift surveys confirm that these clusters are massive systems. There are no massive groups or clusters projected along the line of sight that might contaminate the observed cluster X-ray properties ...
Kenneth J. Rines, Margaret J. Geller
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A Redshift Survey of IRAS Galaxies [PDF]
Symposium - International Astronomical Union, 1988 We have completed a redshift survey of approximately 2200 IRAS galaxies, flux limited at 60μ. The survey covers 76% of the sky and has a characteristic depth of ≈ 6000 km s−1, making it ideal for large scale structure studies requiring whole sky coverage.
Michael A. Strauss, Marc Davis
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HectoMAP: The Complete Redshift Survey (Data Release 2)
The Astrophysical Journal, 2023 HectoMAP is a dense redshift survey of 95,403 galaxies based primarily on MMT spectroscopy with a median redshift z = 0.345. The survey covers 54.64 deg ^2 in a 1.°5 wide strip across the northern sky centered at a decl. of 43.°25. We report the redshift,
Jubee Sohn +5 more
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Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program
The Astrophysical Journal, 2023 We introduce the DESI LOW- Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method.
Elise Darragh-Ford +41 more
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The Astrophysical Journal, 2023 The Dark Energy Spectroscopic Instrument (DESI) Survey has obtained a set of spectroscopic measurements of galaxies to validate the final survey design and target selections.
Ting-Wen Lan +81 more
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Hydra — Centaurus: A Redshift Survey [PDF]
Symposium - International Astronomical Union, 1988 The survey consists of 2 samples : SAMPLE A, 85% complete to B(T) = 14.0 in the region between 10 and 14 Hours in R.A. and between −20 and −50 degrees in DEC., SAMPLE B, complete to B(0) = 14.5 in two regions one between R.A. 13 and 14 hours, DEC between −25 and −33, the other between 11 and 12 hours, DEC from −33 to −27.
G Chincarini +5 more
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The 2Mass Redshift Survey [PDF]
Highlights of Astronomy, 1998 With the current convergence of determinations of the Hubble Constant (e.g. The Extragalactic Distance Scale, 1997, Livio, Donahue and Panagia, eds.) to values within ±25% rather than a factor of two, and the clear possibility of determining q0 using high redshift supernovae (Garnavich et al.
J. Huchra +6 more
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Fractal analysis of the UltraVISTA galaxy survey
Physics Letters B, 2021 This paper seeks to test if the large-scale galaxy distribution can be characterized as a fractal system. Tools appropriate for describing galaxy fractal structures with a single fractal dimension D in relativistic settings are developed and applied to ...
Sharon Teles +2 more
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GALAXY GROUPS IN THE 2MASS REDSHIFT SURVEY [PDF]
The Astrophysical Journal, 2016 ABSTRACT A galaxy group catalog is constructed from the 2MASS Redshift Survey (2MRS) with the use of a halo-based group finder. The halo mass associated with a group is estimated using a “GAP” method based on the luminosity of the central galaxy and its gap with other member galaxies.
Yi Lu +8 more
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