J
Jeffrey D. Simpson
Researcher at University of New South Wales
Publications - 97
Citations - 4008
Jeffrey D. Simpson is an academic researcher from University of New South Wales. The author has contributed to research in topics: Stars & Galaxy. The author has an hindex of 26, co-authored 97 publications receiving 2835 citations. Previous affiliations of Jeffrey D. Simpson include University of Canterbury & University of Sydney.
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Journal ArticleDOI
The GALAH survey and symbiotic stars - I. Discovery and follow-up of 33 candidate accreting-only systems
U. Munari,Gregor Traven,N. Masetti,N. Masetti,P. Valisa,G. L. Righetti,F. J. Hambsch,A. Frigo,Klemen Čotar,G. M. De Silva,Kenneth C. Freeman,Geraint F. Lewis,Sarah L. Martell,Sanjib Sharma,Jeffrey D. Simpson,Yuan-Sen Ting,Robert A. Wittenmyer,Daniel B. Zucker +17 more
TL;DR: In this article, the authors identified a first group of 33 new candidates for symbiotic stars (SySt) of the accreting-only variety among the 600 255 stars so far observed by the GALactic Archaeology with HERMES (GALAH) high-resolution spectroscopic survey of the Southern hemisphere, more than doubling the number of those previously known.
Journal ArticleDOI
The GALAH survey: unresolved triple Sun-like stars discovered by the Gaia mission
Klemen Čotar,Tomaž Zwitter,Gregor Traven,Janez Kos,Martin Asplund,Joss Bland-Hawthorn,Joss Bland-Hawthorn,Sven Buder,Valentina D'Orazi,Gayandhi M. De Silva,Jane Lin,Sarah L. Martell,Sanjib Sharma,Jeffrey D. Simpson,Daniel B. Zucker,Jonathan Horner,Geraint F. Lewis,Thomas Nordlander,Yuan-Sen Ting,Yuan-Sen Ting,Yuan-Sen Ting,Robert A. Wittenmyer +21 more
TL;DR: In this paper, a data-driven methodology was developed to generate a synthetic photometric signature and spectrum of a single star, which can be used to investigate the exact composition of a star.
Proceedings ArticleDOI
First light results from the Hermes spectrograph at the AAT
Andrew I. Sheinis,Andrew I. Sheinis,Sam Barden,Michael N. Birchall,Daniela Carollo,Joss Bland-Hawthorn,Jurek Brzeski,Scott Case,Russell D. Cannon,Vladimir Churilov,Warrick J. Couch,Robert Dean,Gayandhi M. De Silva,Valentina D'Orazi,Tony Farrell,Kristin Fiegert,Kenneth C. Freeman,Gabriella Frost,Luke Gers,Michael Goodwin,Doug Gray,Ron Heald,Jeroen Heijmans,Damien Jones,Stephan Keller,Urs Klauser,Yuriy Kondrat,Jon Lawrence,Jon Lawrence,Steve Lee,Slavko Mali,Sarah L. Martell,Sarah L. Martell,Darren Mathews,Don Mayfield,Stan Miziarski,Rolf Muller,Naveen Pai,Robert Patterson,Ed Penny,David Orr,Keith Shortridge,Jeffrey D. Simpson,Scott Smedley,Greg Smith,Darren Stafford,Nicholas F. Staszak,Minh Vuong,Lewis Waller,Elizabeth Wylie de Boer,Pascal Xavier,Jessica Zheng,Ross Zhelem,Daniel B. Zucker +53 more
TL;DR: The High Efficiency and Resolution Multi Element Spectrograph (HERMES) is an facility-class optical spectrograph for the AAT as mentioned in this paper, which is designed primarily for Galactic Archeology, the first major attempt to create a detailed understanding of galaxy formation and evolution by studying the history of our own galaxy.
Journal ArticleDOI
The Galah Survey: Classification and diagnostics with t-SNE reduction of spectral information
Gregor Traven,Gal Matijevic,Tomaž Zwitter,Maruša Žerjal,Janez Kos,Martin Asplund,Joss Bland-Hawthorn,Andrew R. Casey,G. M. De Silva,G. M. De Silva,Kenneth C. Freeman,Jane Lin,Sarah L. Martell,Katharine J. Schlesinger,Sanjib Sharma,Jeffrey D. Simpson,Jeffrey D. Simpson,Daniel B. Zucker,Daniel B. Zucker,Borja Anguiano,G. S. Da Costa,Ly Duong,Jonathan Horner,E. A. Hyde,E. A. Hyde,Prajwal R. Kafle,Ulisse Munari,David M. Nataf,David M. Nataf,Colin A. Navin,Warren A. Reid,Warren A. Reid,Yuan-Sen Ting +32 more
TL;DR: In this article, a semi-automated classification scheme was proposed to identify different types of peculiar spectral morphologies, in an effort to discover and flag potentially problematic spectra and thus help to preserve the integrity of the survey's results.
Posted Content
Kinematics of Antlia 2 and Crater 2 from The Southern Stellar Stream Spectroscopic Survey (S5)
Alexander P. Ji,Sergey E. Koposov,Tenglin Li,Denis Erkal,Andrew B. Pace,Joshua D. Simon,Vasily Belokurov,Lara R. Cullinane,Gary S. Da Costa,Kyler Kuehn,Geraint F. Lewis,Dougal Mackey,Nora Shipp,Jeffrey D. Simpson,Daniel B. Zucker,Terese T. Hansen,Joss Bland-Hawthorn +16 more
TL;DR: In this article, the Southern Stellar Stream Spectroscopic Survey (S5) was used to detect a clear velocity gradient in the satellite galaxies Antlia 2 and Crater 2.