LARGE AREA SURVEY FORz= 7 GALAXIES IN SDF AND GOODS-N: IMPLICATIONS FOR GALAXY FORMATION AND COSMIC REIONIZATION

We have carried out a large area survey for nearby LSB galaxies to try and answer the following questions: 1.How are LSB galaxies distributed relative to the normal HSB galaxies? Do they have the same clustering properties suggesting that they trace the same mass distribution?2.What are the implications of the clustering properties on galaxy formation scenarios?3.Can they account for faint blue galaxies at higher redshifts?4.Is there any difference between the field and cluster LSB galaxies? 2. The Survey We have devised an automated technique to pick out local LSB galaxies using 65 UKSTU photographic plates corresponding to 2187 sq.°. We have imposed stringent selection criteria in order to minimise the background contamination. Our galaxies have μ0 ≥ 22.5 B mag arcsec-2 α ≥ 3.0 arcseconds and BT ≤ 20.0. Our survey areas are confined to the Fornax Cluster, the NGC1400, Sculptor and Dorado Groups and the fields between them. The survey, which was carried out in three stages over a period of 2 years, has produced detections of 2435 LSB galaxies (32 galaxies per field). We have estimated the background contamination in three ways: first, by a limited redshift sample, secondly, by Ferguson’s (1989) classification on the Fornax plate and finally, by a numerical simulation of background galaxies. The first method produced an estimate of 14 galaxies per field, while the second and the third methods produced the same estimate of 19 galaxies.

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First Light And Reionization Epoch Simulations (FLARES) – I. Environmental dependence of high-redshift galaxy evolution

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/staa3360 ◽

2020 ◽

Vol 500 (2) ◽

pp. 2127-2145

Author(s):

Christopher C Lovell ◽

Aswin P Vijayan ◽

Peter A Thomas ◽

Stephen M Wilkins ◽

David J Barnes ◽

...

Keyword(s):

Galaxy Evolution ◽

Galaxy Formation ◽

Dynamic Range ◽

High Redshift ◽

Formation Rate ◽

Mass Function ◽

Distribution Functions ◽

Large Area ◽

Composite Distribution ◽

Environmental Dependence

ABSTRACT We introduce the First Light And Reionisation Epoch Simulations (FLARES), a suite of zoom simulations using the EAGLE model. We resimulate a range of overdensities during the Epoch of Reionization (EoR) in order to build composite distribution functions, as well as explore the environmental dependence of galaxy formation and evolution during this critical period of galaxy assembly. The regions are selected from a large $(3.2 \, \mathrm{cGpc})^{3}$ parent volume, based on their overdensity within a sphere of radius 14 h−1 cMpc. We then resimulate with full hydrodynamics, and employ a novel weighting scheme that allows the construction of composite distribution functions that are representative of the full parent volume. This significantly extends the dynamic range compared to smaller volume periodic simulations. We present an analysis of the galaxy stellar mass function (GSMF), the star formation rate distribution function (SFRF), and the star-forming sequence (SFS) predicted by FLARES, and compare to a number of observational and model constraints. We also analyse the environmental dependence over an unprecedented range of overdensity. Both the GSMF and the SFRF exhibit a clear double-Schechter form, up to the highest redshifts (z = 10). We also find no environmental dependence of the SFS normalization. The increased dynamic range probed by FLARES will allow us to make predictions for a number of large area surveys that will probe the EoR in coming years, carried out on new observatories such as Roman and Euclid.

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ERRATUM: “DEEP AUSTRALIA TELESCOPE LARGE AREA SURVEY RADIO OBSERVATIONS OF THE EUROPEAN LARGE AREA ISO SURVEY S1/SPITZER WIDE-AREA INFRARED EXTRAGALACTIC FIELD” (2008, AJ, 135, 1276)

The Astronomical Journal ◽

10.1088/0004-6256/136/1/519 ◽

2008 ◽

Vol 136 (1) ◽

pp. 519-519 ◽

Cited By ~ 1

Author(s):

Enno Middelberg ◽

Ray P. Norris ◽

Tim J. Cornwell ◽

Maxim A. Voronkov ◽

Brian D. Siana ◽

...

Keyword(s):

Wide Area ◽

Radio Observations ◽

Large Area ◽

Area Survey

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A Brief Update on the CMZoom Survey

Proceedings of the International Astronomical Union ◽

10.1017/s1743921316012266 ◽

2016 ◽

Vol 11 (S322) ◽

pp. 90-94

Author(s):

C. Battersby ◽

E. Keto ◽

Q. Zhang ◽

S.N. Longmore ◽

J. M. D. Kruijssen ◽

...

Keyword(s):

Star Formation ◽

Angular Resolution ◽

Spatial Scales ◽

Extreme Environments ◽

Spectral Lines ◽

Large Area ◽

Dense Cores ◽

Submillimeter Wavelengths ◽

Area Survey ◽

The Universe

AbstractThe inner few hundred parsecs of the Milky Way, the Central Molecular Zone (CMZ), is our closest laboratory for understanding star formation in the extreme environments (hot, dense, turbulent gas) that once dominated the universe. We present an update on the first large-area survey to expose the sites of star formation across the CMZ at high-resolution in submillimeter wavelengths: the CMZoom survey with the Submillimeter Array (SMA). We identify the locations of dense cores and search for signatures of embedded star formation. CMZoom is a three-year survey in its final year and is mapping out the highest column density regions of the CMZ in dust continuum and a variety of spectral lines around 1.3 mm. CMZoom combines SMA compact and subcompact configurations with single-dish data from BGPS and the APEX telescope, achieving an angular resolution of about 4″ (0.2 pc) and good image fidelity up to large spatial scales.

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Current stage of the ATCA follow-up for SPLASH

Proceedings of the International Astronomical Union ◽

10.1017/s1743921317009747 ◽

2017 ◽

Vol 13 (S336) ◽

pp. 295-296

Author(s):

Hai-Hua Qiao ◽

Andrew J. Walsh ◽

Zhi-Qiang Shen

Keyword(s):

Ground State ◽

Supernova Remnants ◽

Unknown Origin ◽

High Accuracy ◽

Large Area ◽

Evolved Stars ◽

Area Survey ◽

Current Stage ◽

Compact Array

AbstractFour ground-state OH transitions were detected in emission, absorption and maser emission in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH). We re-observed these OH masers with the Australia Telescope Compact Array to obtain positions with high accuracy (~1 arcsec). According to the positions, we categorised these OH masers into different classes, i.e. star formation, evolved stars, supernova remnants and unknown origin. We found one interesting OH maser source (G336.644-0.695) in the pilot region, which has been studied in detail in Qiaoet al.(2016a). In this paper, we present the current stage of the ATCA follow-up for SPLASH and discuss the potential future researches derived from the ATCA data.

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THE SPITZER -HETDEX EXPLORATORY LARGE-AREA SURVEY

The Astrophysical Journal Supplement Series ◽

10.3847/0067-0049/224/2/28 ◽

2016 ◽

Vol 224 (2) ◽

pp. 28 ◽

Cited By ~ 31

Author(s):

C. Papovich ◽

H. V. Shipley ◽

N. Mehrtens ◽

C. Lanham ◽

M. Lacy ◽

...

Keyword(s):

Large Area ◽

Area Survey

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ATLASGAL, the APEX Telescope Large Area Survey of the Galaxy

Proceedings of the International Astronomical Union ◽

10.1017/s1743921310011580 ◽

2009 ◽

Vol 5 (H15) ◽

pp. 780-780

Author(s):

F. Schuller ◽

K. M. Menten ◽

F. Wyrowski ◽

H. Beuther ◽

S. Bontemps ◽

...

Keyword(s):

Galactic Plane ◽

High Mass ◽

Current Status ◽

Continuum Emission ◽

Mass Star ◽

Large Area ◽

Submillimeter Wavelengths ◽

The Galaxy ◽

First Results ◽

Area Survey

AbstractSubmillimeter continuum emission traces high molecular column densities and, thus, dense cloud regions in which new stars are forming. Surveys of the Galactic plane in such emission have the potential of delivering an unbiased view of high-mass star formation throughout the Milky Way. Here we present the scope, current status and first results of ATLASGAL, an ongoing survey of the Galactic plane using the Large APEX Bolometer Camera (LABOCA) on the Atacama Pathfinder Experiment (APEX) telescope at the Chajnantor plateau in Chile. Aimed at mapping 360 square degrees at 870 μm, with a uniform sensitivity of 50 mJy/beam, this survey will provide the first unbiased sample of cold dusty clumps in the Galaxy at submillimeter wavelengths. These will be targets for molecular line follow-up observations and high resolution studies with ALMA and the EVLA.

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A 1500 deg2 near infrared proper motion catalogue from the UKIDSS Large Area Survey

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stt2156 ◽

2013 ◽

Vol 437 (4) ◽

pp. 3603-3625 ◽

Cited By ~ 18

Author(s):

Leigh Smith ◽

P. W. Lucas ◽

B. Burningham ◽

H. R. A. Jones ◽

R. L. Smart ◽

...

Keyword(s):

Proper Motion ◽

Near Infrared ◽

Large Area ◽

Area Survey

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The BeppoSAX High Energy Large Area Survey (HELLAS) -- VI. The radio properties

Monthly Notices of the Royal Astronomical Society ◽

10.1046/j.1365-8711.2003.06573.x ◽

2003 ◽

Vol 342 (2) ◽

pp. 575-586 ◽

Cited By ~ 11

Author(s):

P. Ciliegi ◽

C. Vignali ◽

A. Comastri ◽

F. Fiore ◽

F. La Franca ◽

...

Keyword(s):

High Energy ◽

Large Area ◽

Area Survey

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ATLASGAL – physical parameters of dust clumps associated with 6.7 GHz methanol masers

Monthly Notices of the Royal Astronomical Society ◽

10.1093/mnras/stz2691 ◽

2019 ◽

Cited By ~ 2

Author(s):

S J Billington ◽

J S Urquhart ◽

C König ◽

T J T Moore ◽

D J Eden ◽

...

Keyword(s):

Galactic Plane ◽

Evolutionary Process ◽

Volume Density ◽

High Mass ◽

Physical Parameters ◽

Mass Star ◽

Large Area ◽

The Galaxy ◽

Area Survey ◽

Methanol Masers

Abstract We have constructed the largest sample of dust-associated class II 6.7 GHz methanol masers yet obtained. New measurements from the the Methanol MultiBeam (MMB) Survey were combined with the 870 $\mu$m APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) and the 850 $\mu$m JCMT Plane Survey (JPS). Together with two previous studies we have now identified the host clumps for 958 methanol masers across the Galactic Plane, covering approximately 99 per cent of the MMB catalogue and increasing the known sample of dust-associated masers by over 30 per cent. We investigate correlations between the physical properties of the clumps and masers using distances and luminosities drawn from the literature. Clumps hosting methanol masers are significantly more compact and have higher volume densities than the general population of clumps. We determine a minimum volume density threshold of n(H2) ≥ 104 cm−3 for the efficient formation of intermediate- and high-mass stars. We find 6.7 GHz methanol masers are associated with a distinct part of the evolutionary process (Lbol/Mfwhm ratios of between 100.6 and 102.2) and have well defined turning on and termination points. We estimate the lower limit for the mass of embedded objects to be ≥6 M⊙ and the statistical lifetime of the methanol maser stage to be ∼3.3 × 104 yrs. This suggests that methanol masers are indeed reliable tracers of high mass star formation, and indicates that the evolutionary period traced by this marker is relatively rapid.

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