J
Joss Bland-Hawthorn
Researcher at University of Sydney
Publications - 1157
Citations - 84957
Joss Bland-Hawthorn is an academic researcher from University of Sydney. The author has contributed to research in topics: Galaxy & Stars. The author has an hindex of 136, co-authored 1114 publications receiving 77593 citations. Previous affiliations of Joss Bland-Hawthorn include Macquarie University & Australian National University.
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Journal ArticleDOI
Mapping the aberrations of a wide-field spectrograph using a photonic comb.
Joss Bland-Hawthorn,Janez Kos,Christopher H. Betters,Gayandhi M. De Silva,John O'Byrne,Robert Patterson,Sergio G. Leon-Saval +6 more
TL;DR: This work demonstrates a new approach to calibrating the spectral-spatial response of a wide-field spectrograph using a fibre etalon comb, and introduces a novel approach to near-field illumination that exploits a 20cm aperture commercial telescope and the propagation of skew rays in a multimode fibre.
Journal ArticleDOI
The GALAH survey: velocity fluctuations in the Milky Way using red clump giants
Shourya Khanna,Sanjib Sharma,Joss Bland-Hawthorn,Joss Bland-Hawthorn,Michael R. Hayden,David M. Nataf,Yuan-Sen Ting,Yuan-Sen Ting,Janez Kos,Sarah L. Martell,Tomaž Zwitter,Gayandhi M. De Silva,Gayandhi M. De Silva,Martin Asplund,Sven Buder,Ly Duong,Jane Lin,Jeffrey D. Simpson,Borja Anguiano,Jonathan Horner,Prajwal R. Kafle,Geraint F. Lewis,Thomas Nordlander,Rosemary F. G. Wyse,Robert A. Wittenmyer,Robert A. Wittenmyer,Daniel B. Zucker +26 more
TL;DR: In this article, the authors used red clump stars from the GALAH and APOGEE surveys to map the line-of-sight velocity field around the Sun out to distances of 5 kpc and up to 1.25 kpc from the Galactic Plane.
Journal ArticleDOI
THE CHEMICAL EVOLUTION OF VERY METAL-POOR DAMPED LYα SYSTEMS
TL;DR: In this paper, the authors compare projected sightlines from their simulations to the observed metal-poor DLAs and find that their models can reach the densities of the observed sightlines; however the metallicities are inconsistent with the single supernova simulations, suggesting enrichment by multiple supernovae.
Journal ArticleDOI
The GALAH survey : A catalogue of carbon-enhanced stars and CEMP candidates
Klemen Čotar,Tomaž Zwitter,Janez Kos,Janez Kos,Ulisse Munari,Sarah L. Martell,Martin Asplund,Joss Bland-Hawthorn,Sven Buder,Gayandhi M. De Silva,Kenneth C. Freeman,Sanjib Sharma,Borja Anguiano,Daniela Carollo,Jonathan Horner,Geraint F. Lewis,David M. Nataf,Thomas Nordlander,D. Stello,Yuan-Sen Ting,Yuan-Sen Ting,Yuan-Sen Ting,C. G. Tinney,Gregor Traven,Gregor Traven,Robert A. Wittenmyer +25 more
TL;DR: In this article, the authors used 627 708 GALAH spectra to search for carbon-enhanced stars with a supervised and unsupervised classification algorithm, relying on the imprint of the Swan bands.
ReportDOI
SpecTel: A 10-12 meter class Spectroscopic Survey Telescope
Richard S. Ellis,Kyle S. Dawson,Joss Bland-Hawthorn,Roland Bacon,Adam S. Bolton,Malcolm N. Bremer,Jarle Brinchmann,Kevin Bundy,Charlie Conroy,Bernard Delabre,Arjun Dey,Alex Drlica-Wagner,Jenny E. Greene,Luigi Guzzo,Jennifer A. Johnson,Alexie Leauthaud,Khee-Gan Lee,Luca Pasquini,Laura Pentericci,Johan Richard,Hans-Walter Rix,C. M. Rockosi,David J. Schlegel,Anže Slosar,Michael A. Strauss,Masahiro Takada,Eline Tolstoy,Darach Watson +27 more
TL;DR: In this paper, a conceptual design study for a spectroscopic facility in the southern hemisphere comprising a large diameter telescope, fiber system, and spectrographs collectively optimized for massively-multiplexed spectroscopy is presented.