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Measurements of [Fe/H] and [$\alpha$/Fe] can probe the minor merging history of a galaxy, providing a direct way to test the hierarchical assembly paradigm. While measurements of [$\alpha$/Fe] have been made in the stellar halo of the Milky…

Astrophysics of Galaxies · Physics 2019-06-19 Ivanna Escala , Evan N. Kirby , Karoline M. Gilbert , Emily C. Cunningham , Jennifer Wojno

The H.E.S.S. (High Energy Stereoscopic System) phase I is comprised of four Imaging Atmospheric Cherenkov telescopes, for observation of galactic and cosmic sources of very high energy gamma rays. Its installation in the Khomas highlands,…

Astrophysics · Physics 2015-06-24 M. Punch , the HESS Collaboration

Typical astronomical spectrographs have a resolution ranging between a few hundred to 200.000. Deconvolution and correlation techniques are being employed with a significance down to 1/1000 th of a pixel. HeAr and ThAr lamps are usually…

Astrophysics · Physics 2015-05-13 Piet O. Schmidt , Stefan Kimeswenger , Hans Ulrich Kaeufl

In the last 15 years different ground-based spectroscopic surveys have been started (and completed) with the general aim of delivering stellar parameters and elemental abundances for large samples of Galactic stars, complementing Gaia…

Astrophysics of Galaxies · Physics 2022-10-26 S. Randich , G. Gilmore , L. Magrini , G. G. Sacco , R. J. Jackson , R. D. Jeffries , C. C. Worley , A. Hourihane , A. Gonneau , C. Viscasillas Vàzquez , E. Franciosini , J. R. Lewis , E. J. Alfaro , C. Allende Prieto , T. Bensby R. Blomme , A. Bragaglia , E. Flaccomio , P. François , M. J. Irwin , S. E. Koposov , A. J. Korn , A. C. Lanzafame , E. Pancino , A. Recio-Blanco , R. Smiljanic , S. Van Eck , T. Zwitter , M. Asplund , P. Bonifacio , S. Feltzing , J. Binney , J. Drew , A. M. N. Ferguson , G. Micela , I. Negueruela , T. Prusti , H. -W. Rix , A. Vallenari , A. Bayo , M. Bergemann , K. Biazzo , G. Carraro , A. R. Casey , F. Damiani , A. Frasca , U. Heiter , V. Hill , P. Jofré , P. de Laverny , K. Lind , G. Marconi , C. Martayan , T. Masseron , L. Monaco , L. Morbidelli , L. Prisinzano , L. Sbordone , S. G. Sousa , S. Zaggia , V. Adibekyan , R. Bonito , E. Caffau , S. Daflon , D. K. Feuillet , M. Gebran , J. I. González Hernández , G. Guiglion , A. Herrero , A. Lobel , J. Maíz Apellániz , T. Merle , S. Mikolaitis , D. Montes , T. Morel , C. Soubiran , L. Spina , H. M. Tabernero , G. Tautvaišienė , G. Traven , M. Valentini , M. Van der Swaelmen , S. Villanova , N. J. Wright , U. Abbas , V. Aguirre Børsen-Koch , J. Alves , L. Balaguer-Núnez , P. S. Barklem , D. Barrado , S. R. Berlanas , A. S. Binks , A. Bressan , R. Capuzzo--Dolcetta , L. Casagrande , L. Casamiquela , R. S. Collins , V. D'Orazi , M. L. L. Dantas , V. P. Debattista , E. Delgado-Mena , P. Di Marcantonio , A. Drazdauskas , N. W. Evans , B. Famaey , M. Franchini , Y. Frémat , E. D. Friel , X. Fu , D. Geisler , O. Gerhard , E. A. González Solares , E. K. Grebel , M. L. Gutiérrez Albarrán , D. Hatzidimitriou , E. V. Held , F. Jiménez-Esteban , H. Jönsson , C. Jordi , T. Khachaturyants , G. Kordopatis , J. Kos , N. Lagarde , L. Mahy , M. Mapelli , E. Marfil , S. L. Martell , S. Messina , A. Miglio , I. Minchev , A. Moitinho , J. Montalban , M. J. P. F. G. Monteiro , C. Morossi , N. Mowlavi , A. Mucciarelli , D. N. A. Murphy , N. Nardetto , S. Ortolani , F. Paletou , J. Palouus , E. Paunzen , J. C. Pickering , A. Quirrenbach , P. Re Fiorentin , J. I. Read , D. Romano , N. Ryde , N. Sanna , W. Santos , G. M. Seabroke , A. Spagna , M. Steinmetz , E. Stonkuté , E. Sutorius , F. Thévenin , M. Tosi , M. Tsantaki , J. S. Vink , N. Wright , R. F. G. Wyse , M. Zoccali , J. Zorec , D. B. Zucker , N. A. Walton

We present an Echelle+CCD, high S/N, high resolution (R = 20\,000) spectroscopic atlas of 108 well-known objects representative of the most common types of peculiar and variable stars. The wavelength interval extends from 4600 to 9400 Ang,…

Solar and Stellar Astrophysics · Physics 2015-05-20 L. Tomasella , U. Munari , T. Zwitter

We present the first successful demonstration of multi-object near-infrared spectroscopy on high redshift galaxies. Our objective is to address the true star formation history of the universe at z~1, a crucial epoch which some have…

Astrophysics · Physics 2007-05-23 M. Doherty , A. Bunker , R. Sharp , G. Dalton , I. Parry , I. Lewis , E. MacDonald , C. Wolf

The Gaia-ESO Survey is a large public spectroscopic survey that aims to derive radial velocities and fundamental parameters of about 10^5 Milky Way stars in the field and in clusters. Observations are carried out with the multi-object…

(Abridged) The Large Area Telescope (Fermi/LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy gamma-ray telescope, covering the energy range…

Instrumentation and Methods for Astrophysics · Physics 2012-08-27 LAT Collaboration , W. B. Atwood

Context. The Australia Telescope Large Area Survey (ATLAS) aims to image a 7 deg2 region centred on the European Large Area ISO Survey - South 1 (ELAIS-S1) field and the Chandra Deep Field South (CDF-S) at 1.4 GHz with high sensitivity (up…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-30 Peter-Christian Zinn , Enno Middelberg , Ray P. Norris , Christopher A. Hales , Minnie Y. Mao , Kate E. Randall

The FIR/submm window is one of the least-studied regions of the electromagnetic spectrum, yet this wavelength range is absolutely crucial for understanding the physical processes and properties of the ISM in galaxies. The advent of the…

The Mid-infrared ELT Imager and Spectrograph (METIS) is a first-generation instrument for the Extremely Large Telescope (ELT), Europe's next-generation 39 m ground-based telescope for optical and infrared wavelengths. METIS will offer…

The Planet Hunting and Asteroseismology Explorer Spectrophotometer, PHASES, is a concept for a space-borne instrument to obtain flux calibrated spectra and measure micro-magnitude photometric variations of nearby stars. The science drivers…

Instrumentation and Methods for Astrophysics · Physics 2010-01-13 Carlos del Burgo , Carlos Allende Prieto , Tully Peacocke

Hi-GAL, the Herschel infrared Galactic Plane Survey, is an Open Time Key Project of the Herschel Space Observatory. It will make an unbiased photometric survey of the inner Galactic Plane by mapping a two-degree wide strip in the longitude…

Astrophysics of Galaxies · Physics 2015-05-14 S. Molinari , the Hi-GAL Consortium

We present a spectroscopic survey of galaxies in the COSMOS field using the Fiber Multi-Object Spectrograph (FMOS), a near-infrared instrument on the Subaru Telescope. Our survey is specifically designed to detect the Halpha emission line…

We describe the scientific goals and survey design of the First Large Absorption Survey in HI (FLASH), a wide field survey for 21-cm line absorption in neutral atomic hydrogen (HI) at intermediate cosmological redshifts. FLASH will be…

The Large Area Telescope (LAT) on Fermi, launched on 2008 June 11, is a space telescope to explore the high energy gamma-ray universe. The instrument covers the energy range from 20 MeV to 300 GeV with greatly improved sensitivity and…

High Energy Astrophysical Phenomena · Physics 2010-06-18 Damien Parent