English
Related papers

Related papers: Exploring the HI Universe with ASKAP

200 papers

This chapter describes the assumed specifications and sensitivities for HI galaxy surveys with SKA1 and SKA2. It addresses the expected galaxy number densities based on available simulations as well as the clustering bias over the…

Cosmology and Nongalactic Astrophysics · Physics 2015-01-19 Mario G. Santos , David Alonso , Philip Bull , Marta Silva , Sahba Yahya

Neutral Hydrogen (HI) provides a very important fuel for star formation, but is difficult to detect at high redshift due to weak emission, limited sensitivity of modern instruments, and terrestrial radio frequency interference (RFI) at low…

Astrophysics of Galaxies · Physics 2016-07-20 Lucas R. Hunt , D. J. Pisano , Stanislav S. Edel

The Arecibo Legacy Fast ALFA (ALFALFA) survey has completed source extraction for 40% of its total sky area, resulting in the largest sample of HI-selected galaxies to date. We measure the HI mass function from a sample of 10,119 galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Ann M. Martin , Emmanouil Papastergis , Riccardo Giovanelli , Martha P. Haynes , Christopher M. Springob , Sabrina Stierwalt

Asymmetry in the spatially integrated, 1D HI global profiles of galaxies can inform us on both internal (e.g. outflows) and external (e.g. mergers, tidal interactions, ram pressure stripping) processes that shape galaxy evolution.…

Astrophysics of Galaxies · Physics 2022-10-05 M. Glowacki , N. Deg , S. L. Blyth , N. Hank , R. Davé , E. Elson , K. Spekkens

We present a catalogue of a large sample of extended radio sources in the SCORPIO field, observed and resolved by the Australia Telescope Compact Array. SCORPIO, a pathfinder project for addressing the early operations of the Australia SKA…

Context. In the current era of multi-wavelength and multi-messenger astronomy, international organisations are actively working on the definition of new standards for the publication of astronomical data, and substantial effort is devoted…

Instrumentation and Methods for Astrophysics · Physics 2025-10-13 Fabrizio Giordano , Yago Ascasibar , Luca Cortese , Ivan Valtchanov , Bruno Merín

We propose an innovative method for measuring the neutral hydrogen (HI) content of an optically-selected spectroscopic sample of galaxies through cross-correlation with HI intensity mapping measurements. We show that the HI-galaxy…

Astrophysics of Galaxies · Physics 2017-07-26 L. Wolz , C. Blake , J. S. B. Wyithe

Here I briefly highlight our studies of the gas content, kinematics and star formation in nearby dwarf galaxies (D < 10 Mpc) based on the `Local Volume HI Survey' (LVHIS, Koribalski et al. 2018), which was conducted with the Australia…

Astrophysics of Galaxies · Physics 2020-02-19 B. S. Koribalski

The SKA and its precursors will open a new era in the observation of cosmic magnetic fields and help to understand their origin. In the SKADS polarization simulation project, maps of polarized intensity and RM of the Milky Way, galaxies and…

Instrumentation and Methods for Astrophysics · Physics 2010-02-11 Rainer Beck

We present here a study of the broadband spectral properties of 33 sources detected in HI absorption as part of the ASKAP-FLASH Pilot Surveys. We outline our approach to spectral classification and discuss the correlation seen between…

Astrophysics of Galaxies · Physics 2024-12-12 Emily F. Kerrison , Elaine M. Sadler , Vanessa A. Moss , Elizabeth K. Mahony

We describe a project to study the state of the ISM in ~20 low redshift (z<0.3) QSO host galaxies observed with the PMAS integral field spectrograph. We describe method developement to access the stellar and gas component of the spectrum…

Astrophysics · Physics 2009-11-10 K. Jahnke , L. Wisotzki , S. F. Sanchez , L. Christensen , T. Becker , A. Kelz , M. M. Roth

Deep surveys of the cosmic X-ray background are reviewed in the context of observational progress enabled by the Chandra X-ray Observatory and the X-ray Multi-Mirror Mission-Newton. The sources found by deep surveys are described along with…

Astrophysics · Physics 2009-11-10 W. N. Brandt , G. Hasinger

We have used the Australian Square Kilometre Array Pathfinder (ASKAP) radio telescope to search for intervening 21 cm neutral hydrogen (HI) absorption along the line of sight to 53 bright radio continuum sources. Our observations are…

The Australian SKA Pathfinder (ASKAP) is being used to undertake a campaign to rapidly survey the sky in three frequency bands across its operational spectral range. The first pass of the Rapid ASKAP Continuum Survey (RACS) at 887.5 MHz in…

The Great Observatories Origins Deep Survey (GOODS) is designed to gather the best and deepest multiwavelength data for studying the formation and evolution of galaxies and active galactic nuclei, the distribution of dark and luminous…

Astrophysics · Physics 2019-08-14 Mark Dickinson , Mauro Giavalisco

The DEIMOS spectrograph is nearing completion in the UC Lick shops and will be delivered to the Keck Observatory in 2001. Once it is operational, a team of astronomers will initiate DEEP2, a major redshift survey of galaxies that will…

Astrophysics · Physics 2009-10-31 Marc Davis , Jeffrey Newman , Sandra Faber , Andrew Phillips

DEEP is a two-phase spectral survey of faint field galaxies with the Keck Telescopes. The goals include exploring galaxy formation and evolution, mapping distant large scale structures, and constraining cosmology. DEEP, since its inception…

Astrophysics · Physics 2007-05-23 David C. Koo

Kinematical studies of low and high redshift galaxies enables to probe galaxy formation and evolution scenarios. Integral field spectroscopy is a powerful tool to study with accuracy nearby galaxies kinematics. Recent observations also…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-16 Benoit Epinat

In these proceedings we describe the WEAVE-QSO survey, which will observe around 400,000 high redshift quasars starting in 2018. This survey is part of a broader WEAVE survey to be conducted at the 4.2m William Herschel Telescope. We will…

‹ Prev 1 8 9 10 Next ›