The Sydney University Molonglo Sky Survey (SUMSS) and Optical Redshift Surveys of the Southern Sky

The Sydney University Molonglo Sky Survey (SUMSS) is a radio imaging survey at 843 MHz of the whole sky south of declination −30°. With a resolution of 43″ × 43″ cosec |δ| and an rms noise level of ∼ 1 mJy/beam, SUMSS has similar sensitivity and resolution to the northern NRAO VLA Sky Survey (NVSS). Here, we present some results from the first two years of SUMSS and also show what can be done by combining radio data from SUMSS and NVSS with the new generation of large optical redshift surveys (including the 2dF Galaxy Redshift Survey and 6dF Galaxy Survey) now becoming available in the southern hemisphere.

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Spectral Characteristics of the 2dFGRS–NVSS Galaxies

Publications of the Astronomical Society of Australia ◽

10.1071/as00042 ◽

2000 ◽

Vol 17 (3) ◽

pp. 234-240 ◽

Cited By ~ 5

Author(s):

C. A. Jackson ◽

D. M. Londish

Keyword(s):

Spectral Characteristics ◽

Line Ratio ◽

Emission Lines ◽

Sky Survey ◽

Show Evidence ◽

Redshift Survey ◽

Galaxy Redshift ◽

Narrow Emission

AbstractWe have analysed the 2dF spectra of a sample of galaxies common to the 2dF Galaxy Redshift Survey (2dFGRS, Colless 1999) and the NRAO VLA Sky Survey (NVSS, Condon et al. 1998). Our sample comprises 88 galaxies selected by Sadler et al. (1999) from 30 2dFGRS fields observed in 1998. In this paper we discuss how this and future, much larger, samples of 2dFGRS–NVSS galaxies can be interpreted via analysis of those galaxies with strong narrow emission lines. Using diagnostic line ratio measurements, we confirm the majority of the eyeball classifications of Sadler et al. (1999), although many galaxies show evidence of being ‘composite’ galaxies—mixtures of AGN plus starburst components.

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Radio Sources in the 2dF Galaxy Redshift Survey I. Radio Source Populations

Publications of the Astronomical Society of Australia ◽

10.1071/as99247 ◽

1999 ◽

Vol 16 (3) ◽

pp. 247-256 ◽

Cited By ~ 24

Author(s):

Elaine M. Sadler ◽

V. J. McIntyre ◽

C. A. Jackson ◽

R. D. Cannon

Keyword(s):

Radio Galaxy ◽

Radio Continuum ◽

Radio Sources ◽

Star Forming ◽

Sky Survey ◽

Homogeneous Set ◽

First Results ◽

Redshift Survey ◽

Galaxy Redshift ◽

Source Populations

AbstractWe present the first results from a study of the radio continuum properties of galaxies in the 2dF Galaxy Redshift Survey, (2dFGRS) based on thirty 2dF fields covering a total area of about 100 deg2. About 1·5% of galaxies with bJ < 19·4 mag. are detected as radio continuum sources in the NRAO VLA Sky Survey (NVSS). Of these, roughly 40% are star-forming galaxies and 60% are active galaxies (mostly low-power radio galaxies and a few Seyferts). The combination of 2dFGRS and NVSS will eventually yield a homogeneous set of around 4000 radio-galaxy spectra, which will be a powerful tool for studying the distribution and evolution of both AGN and starburst galaxies out to z ∼ 0·3.

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Mapping the Local and Distant Universe with SUMSS

Symposium - International Astronomical Union ◽

10.1017/s0074180900196652 ◽

2005 ◽

Vol 216 ◽

pp. 211-218

Author(s):

Elaine M. Sadler ◽

Richard W. Hunstead ◽

Thomas Mauch ◽

Duncan Campbell-Wilson ◽

Carole A. Jackson ◽

...

Keyword(s):

Radio Source ◽

Radio Galaxies ◽

Radio Continuum ◽

Space Distribution ◽

Local Universe ◽

Star Forming ◽

Sky Survey ◽

First Results ◽

Redshift Survey ◽

Galaxy Redshift

The Sydney University Molonglo Sky Survey (SUMSS) is a radio continuum imaging survey of the southern sky at 843 MHz, with similar sensitivity and resolution to the northern NRAO VLA Sky Survey (NVSS). We have combined radio data from SUMSS and NVSS with optical spectra from the 2dF Galaxy Redshift Survey and 6dF Galaxy Survey to study the space distribution and properties of both AGN and star-forming galaxies in the local universe (redshift range 0 < z < 0.3). We also discuss new results on radio-source clustering in the more distant universe (z ∼ 1) and present the first results from a search for the most distant (z > 3) southern radio galaxies.

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21cm Cosmology

Proceedings of the International Astronomical Union ◽

10.1017/s174392131401388x ◽

2014 ◽

Vol 10 (S306) ◽

pp. 165-176 ◽

Cited By ~ 1

Author(s):

Mario G. Santos ◽

David Alonso ◽

Philip Bull ◽

Stefano Camera ◽

Pedro G. Ferreira

Keyword(s):

Dark Energy ◽

Energy Equation ◽

Statistical Techniques ◽

Radio Telescopes ◽

Fundamental Physics ◽

Intensity Mapping ◽

Redshift Surveys ◽

Observational Technique ◽

Galaxy Redshift ◽

New Generation

AbstractA new generation of radio telescopes with unprecedented capabilities for astronomy and fundamental physics will be in operation over the next few years. With high sensitivities and large fields of view, they are ideal for cosmological applications. We discuss their uses for cosmology focusing on the observational technique of HI intensity mapping, in particular at low redshifts (z < 4). This novel observational window promises to bring new insights for cosmology, in particular on ultra-large scales and at a redshift range that can go beyond the dark energy domination epoch. In terms of standard constraints on the dark energy equation of state, telescopes such as Phase I of the SKA should be able to obtain constrains about as well as a future galaxy redshift surveys. Statistical techniques to deal with foregrounds and calibration issues, as well as possible systematics are also discussed.

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Two Degree Field Galaxy Redshift Survey and Sloan Digital Sky Survey Galaxy Group Density Profiles

The Astrophysical Journal ◽

10.1086/431234 ◽

2005 ◽

Vol 629 (1) ◽

pp. 158-171 ◽

Cited By ~ 20

Author(s):

Eugenia Diaz ◽

Ariel Zandivarez ◽

Manuel E. Merchan ◽

Hernan Muriel

Keyword(s):

Sloan Digital Sky Survey ◽

Density Profiles ◽

Sky Survey ◽

Redshift Survey ◽

Galaxy Redshift ◽

Group Density ◽

Field Galaxy

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CONSTRAINT ON THE KINEMATICAL AND DYNAMICAL MODEL FROM THE LATEST OBSERVATIONAL DATA

Modern Physics Letters A ◽

10.1142/s0217732310034080 ◽

2010 ◽

Vol 25 (36) ◽

pp. 3033-3046 ◽

Cited By ~ 2

Author(s):

JIANBO LU ◽

YABO WU ◽

LIXIN XU

Keyword(s):

Observational Data ◽

Acoustic Oscillation ◽

Sloan Digital Sky Survey ◽

Dynamical Model ◽

Sky Survey ◽

Type Ia ◽

Redshift Survey ◽

Galaxy Redshift ◽

Ia Supernovae ◽

Field Galaxy

The kinematical model j(z) = j0and dynamical model wde(z) = w0, are constrained from the latest observational data: Union2 data including 557 type Ia supernovae (SNIa), 15 observational Hubble data (OHD), baryon acoustic oscillation (BAO) data from Sloan Digital Sky Survey (SDSS) and Two-degree Field Galaxy Redshift Survey (2dFGRS) and CMB data from seven-year WMAP. We get the current values of deceleration parameter q0, jerk parameter j0, dimensionless matter density Ωm, equation of state for dark energy w0and transition redshift zT. Furthermore, it is shown that for both kinematical and dynamical models, the constraint results support for the cosmic concordance model, ΛCDM.

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Redshift Surveys With 2DF

Highlights of Astronomy ◽

10.1017/s153929960002181x ◽

1998 ◽

Vol 11 (1) ◽

pp. 473-481

Author(s):

Matthew Colless ◽

Brian Boyle

Keyword(s):

20Th Century ◽

21St Century ◽

Preliminary Results ◽

Redshift Surveys ◽

Order Of Magnitude ◽

Redshift Survey ◽

The Subject ◽

Galaxy Redshift ◽

Survey Strategy

This IAU Joint Discussion proposes to address the subject of redshift surveys in the 21st century. This paper, however, deals with two major new redshift surveys that those involved sincerely hope will be completed in the 20th century. Nonetheless, these surveys are relevant to the topic of the meeting, as they clearly foreshadow the scope and style of redshift surveys, if not in the coming millennium, at least in the coming decade. The surveys are being carried out with the new Two Degree Field (2dF) facility on the Anglo-Australian Telescope (AAT), a 400-fibre multi-object spectrograph with the capability, as described in Section 2, to increase the size of redshift surveys by an order of magnitude over current best efforts. The main scientific goals, survey strategy and some preliminary results from the 2dF Galaxy Redshift Survey are outlined in Section 3, while Section 4 similarly describes the 2dF QSO Redshift Survey. Further information can be found on the WWW at http://www.aao.gov.au/2df/ for the 2dF facility, at http://msowww.anu.edu.au/~colless/2dF/ for thegalaxy survey and at http://www.aao.gov.au/local/www/rs/qso_surv.html for the QSO survey.

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An Obscured Galaxy Redshift Survey with FLAIR

Publications of the Astronomical Society of Australia ◽

10.1071/as97126a ◽

1997 ◽

Vol 14 (1) ◽

pp. 126-126 ◽

Cited By ~ 1

Author(s):

K. Wakamatsu ◽

M. Malkan ◽

Q. A. Parker ◽

H. Karoji

Keyword(s):

Large Scale ◽

Wall Structure ◽

Galactic Centre ◽

Large Scale Structures ◽

Sky Survey ◽

Centre Region ◽

Redshift Survey ◽

Galaxy Redshift ◽

Scale Structures ◽

Zone Of Avoidance

A problem for studies of large scale structures in nearby space (cz < 10,000 km s-1) is the presence of the Zone of Avoidance which is so large and wide on the sky that potentially important clusters and voids remain undetected. A prime example was the Ophiuchus cluster discovered by Wakamatsu and Malkan (1981) as a heavily obscured cD cluster close to the Galactic centre region (l = 0·5°, b = +9·5°). It is the second brightest X-ray cluster after Perseus. A hidden galaxy survey was performed by visually searching ESO/SERC Sky Survey (R and J) copy films of the region centred at l = 355°, b = +10° finding more than 4000 galaxies in six fields. Several irregular clusters adjacent to Ophiuchus were found forming a supercluster which may be connected to the Hercules supercluster by a wall structure parallel to the local supergalactic plane (Wakamatsu et al. 1994). In front of this supercluster, an 'Ophiuchus Void' is suggested (cz = 4,500 km s-1). The Ophiuchus supercluster at cz = 8,500 km s-1 is similar to the Hercules supercluster (cz = 11,000 km s-1), and extends north toward the latter supercluster.

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