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Related papers: Roadmap of GHOST@Gemini's Precision Radial Velocit…

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We report the discovery of two new unbound hypervelocity stars (HVSs) from the LAMOST spectroscopic surveys. They are respectively a B2V type star of ~ 7 M$_{\rm \odot}$ with a Galactic rest-frame radial velocity of 502 km/s at a…

Astrophysics of Galaxies · Physics 2017-10-04 Yang Huang , Xiaowei Liu , Huawei Zhang , Bingqiu Chen , Maosheng Xiang , Chun Wang , Haibo Yuan , Zhijia Tian , Yinbi Li , Bo Wang

We give an overview of the current and future IFU capabilities on the Gemini 8-m telescopes. The telescopes are well-suited to integral field spectroscopy and both telescopes will have optical and near-infrared IFUs within the next few…

Astrophysics · Physics 2007-05-23 B. W. Miller , J. Turner , M. Takamiya , D. Simons , I. Hook

High precision astrometry aims at source position determination to a very small fraction of the diffraction image size, in high SNR regime. One of the key limitations to such goal is the optical response variation of the telescope over a…

Instrumentation and Methods for Astrophysics · Physics 2021-04-08 Alberto Riva , Mario Gai , Alberto Vecchiato , Deborah Busonero , Mario G. Lattanzi , Federico Landini , Zhaoxiang Qi , Zhenghong Tang

The Cosmology Redshift Survey of the 4-metre Multi-Object Spectroscopic Telescope (4MOST-CRS) will provide redshift measurements of galaxies and quasars over 5700{\degsq} in the southern hemisphere. As targets for the 4MOST-CRS, we present…

The Radial Velocity Spectrograph (RVS) on board of Gaia needs to be calibrated using stable reference stars known in advance. The catalogue presented here has being built for that purpose. It includes 1420 radial velocity standard star…

Solar and Stellar Astrophysics · Physics 2015-06-15 C. Soubiran , G. Jasniewicz , L. Chemin , F. Crifo , S. Udry , D. Hestroffer , D. Katz

We present custom-processed UV, optical, and near-IR photometry for the RESOLVE survey, a volume-limited census of stellar, gas, and dynamical mass within two subvolumes of the nearby universe (RESOLVE-A and -B), complete down to baryonic…

A next-generation medium-energy gamma-ray telescope targeting the MeV range would address open questions in astrophysics regarding how extreme conditions accelerate cosmic-ray particles, produce relativistic jet outflows, and more. One…

The current generation of precision radial velocity (RV) spectrographs are seeing-limited instruments. In order to achieve high spectral resolution on 8m class telescopes, these spectrographs require large optics and in turn, large…

The hard X-ray sky now being studied by INTEGRAL and Swift and soon by NuSTAR is rich with energetic phenomena and highly variable non-thermal phenomena on a broad range of timescales. The High Energy Telescope (HET) on the proposed…

Instrumentation and Methods for Astrophysics · Physics 2015-05-20 J. Hong , J. Grindlay , B. Allen , G. Skinner , S. Barthelmy , N. Gehrels , A. Garson , H. Krawczynski , W. Cook , F. Harrison , L. Natalucci , P. Ubertini , the EXIST/HET team

We compare variability of radial velocity (RV) and brightness for a sample of red giants which were selected as candidates for the Grid Giant Star Survey (GGSS). The purpose of the survey is to select astrometrically stable stars as a…

Astrophysics · Physics 2007-05-23 D. Bizyaev , V. V. Smith , J. Arenas , D. Geisler

The NeXT mission has been proposed to study high-energy non-thermal phenomena in the universe. The high-energy response of the super mirror will enable us to perform the first sensitive imaging observations up to 80 keV. The focal plane…

X-ray "ghost" imaging has drawn great attention for its potential to lower radiation dose in medical diagnosis. For practical implementation, however, the efficiency and image quality have to be greatly improved. Here we demonstrate a…

Image and Video Processing · Electrical Eng. & Systems 2019-05-28 Yu-Hang He , Ai-Xin Zhang , Ming-Fei Li , Yi-Yi Huang , Bao-Gang Quan , Da-Zhang Li , Ling-An Wu , Li-Ming Chen

A comprehensive study of the spatial resolution and detection efficiency of sensor prototypes developed for the LHCb VELO upgrade is presented. Data samples were collected at the CERN SPS H8 beam line using a hadron mixture of protons and…

The forthcoming Wide Area Vista Extragalactic Survey (WAVES) on the 4-metre Multi-Object Spectroscopic Telescope (4MOST) has a key science goal of probing the halo mass function to lower limits than possible with previous surveys. For that…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-03 Gursharanjit Kaur , Maciej Bilicki , Wojciech Hellwing , the WAVES team

We present a spectroscopic library of late spectral type stellar templates in the near-IR range 2.15-2.42microns, at R=5300-5900 resolution, oriented to support stellar kinematics studies in external galaxies, such as the direct…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Claudia Winge , Rogemar A. Riffel , Thaisa Storchi-Bergmann

We present 46 rest-frame ultraviolet (UV) spectra of 28 local starburst and star-forming galaxies which were observed with the Faint Object Spectrograph (FOS) and the Goddard High Resolution Spectrograph (GHRS) of the Hubble Space Telescope…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Claus Leitherer , Christy A. Tremonti , Timothy M. Heckman , Daniela Calzetti

Near exit plane non-resonant light induced fluorescence spectroscopy is performed in a Hall effect low-power Xenon thruster at discharge voltage of 250V and anode flow rate of 0.7mg/sec. Measurement of the axial and radial velocity…

Atomic Physics · Physics 2015-06-16 Y. Dancheva , V. Biancalana , D. Pagano , F. Scortecci

We explore the possibility of detecting very faint, very close-in stellar companions using large aperture ground-based telescopes and the technique of optical speckle imaging. We examine the state of high angular resolution speckle imaging…

Instrumentation and Methods for Astrophysics · Physics 2024-04-25 Steve B. Howell , Arturo O. Martinez , Douglas A. Hope , David R. Ciardi , Stuart M. Jefferies , Fabien R. Baron , Michael B. Lund

The Forward Silicon Tracker (FST) is a pivotal component of the forward upgrade of the Solenoidal Tracker at RHIC (STAR), designed to discern hadron charge signs with a momentum resolution better than 30% for $0.2 < p_T < 2$ GeV/c in the…

Instrumentation and Detectors · Physics 2025-01-16 J. D. Brandenburg , Y. Chang , J. Dong , Y. He , Y. Hu , B. Huang , H. Huang , T. Huang , H. Li , M. Nie , R. Sharma , X. Sun , P. Tribedy , F. Videbæk , G. Visser , G. Wilks , P. Wang , G. Xie , G. Yan , Z. Ye , L. Yi , Y. Yang , S. Zhang , Z. Zhang

Having achieved 'first-light' right before the opening ceremony on September 25, 2016, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) is being busily commissioned. Its innovative design requires ~1000 points to be measured…

Instrumentation and Methods for Astrophysics · Physics 2018-05-09 Di Li , Pei Wang , Lei Qian , Marko Krco , Alex Dunning , Peng Jiang , Youling Yue , Chenjin Jin , Yan Zhu , Zhichen Pan , Rendong Nan
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