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We present a novel approach to deriving stellar labels for stars observed in MUSE fields making use of data-driven machine learning methods. Taking advantage of the comparable spectral properties (resolution, wavelength coverage) of the…

Solar and Stellar Astrophysics · Physics 2022-05-27 Zixian Wang , Michael R. Hayden , Sanjib Sharma , Maosheng Xiang , Yuan-Sen Ting , Joss Bland-Hawthorn , Boquan Chen

The Very Large Area gamma-ray Space Telescope (VLAST) is a mission concept proposed to detect gamma-ray photons through both the Compton scattering and electron-positron pair production mechanisms, enabling the detection of photons with…

Instrumentation and Methods for Astrophysics · Physics 2024-09-02 Xu Pan , Wei Jiang , Chuan Yue , Shi-Jun Lei , Yu-Xin Cui , Qiang Yuan

Kepler mission will provide a huge amount of asteroseismic data during the next few years, among which hundreds of solar-like stars will be targeted. The amount of stars and their observation length represent a step forward in the…

Solar and Stellar Astrophysics · Physics 2009-10-02 S. Mathur , R. A. Garcia , C. Regulo , J. Ballot , D. Salabert , W. J. Chaplin

The program package SME (Spectroscopy Made Easy), designed to perform an analysis of stellar spectra using spectral fitting techniques, was updated due to adding new functions (isotopic and hyperfine splittins) in VALD and including grids…

Instrumentation and Methods for Astrophysics · Physics 2017-10-31 N. Piskunov , T. Ryabchikova , Yu. Pakhomov , T. Sitnova , S. Alexeeva , L. Mashonkina , T. Nordlander

With the availability of multi-object spectrometers and the designing \& running of some large scale sky surveys, we are obtaining massive spectra. Therefore, it becomes more and more important to deal with the massive spectral data…

Instrumentation and Methods for Astrophysics · Physics 2023-12-27 Xiangru Li , Yangtao Lin , Kaibin Qiu

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

LAMOST Data Release 5, covering $\sim$17,000 $deg^2$ from $-10^{\circ}$ to $80^{\circ}$ in declination, contains 9 millions co-added low resolution spectra of celestial objects, each spectrum combined from repeat exposure of two to tens of…

We present a detailed analysis of the selection function of the LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC). LSS-GAC was designed to obtain low resolution optical spectra for a sample of more than 3 million stars in…

Astrophysics of Galaxies · Physics 2018-03-14 B. -Q. Chen , X. -W. Liu , H. -B. Yuan , M. -S. Xiang , Y. Huang , C. Wang , H. -W. Zhang , Z. -J. Tian

One of the scientific goals of the Large Synoptic Survey Telescope (LSST) is to measure the evolution of dark energy by measuring subtle distortions of galaxy shapes due to weak gravitational lensing caused by the evolving dark matter…

Instrumentation and Methods for Astrophysics · Physics 2018-07-27 Claire-Alice Hébert , Bruce Macintosh , Patricia R. Burchat

As a major component of the LAMOST Galactic surveys, the LAMOST Spectroscopic Survey of the Galactic Anti-center (LSS-GAC) will survey a significant volume of the Galactic thin/thick disks and halo in a contiguous sky area of ~…

The Large Synoptic Survey Telescope (LSST) is conceived as an 8.4-m telescope with CCD or CMOS focal plane covering most of a field 0.6 m in diameter, the latter exceeding the size of the largest photographic plates ever used in astronomy.…

Astrophysics · Physics 2015-06-10 Alistair R. Walker

Context. An increasing number of high-resolution stellar spectra is available today thanks to many past and ongoing extensive spectroscopic surveys. Consequently, the scientific community needs automatic procedures to derive atmospheric…

Instrumentation and Methods for Astrophysics · Physics 2014-10-01 S. Blanco-Cuaresma , C. Soubiran , U. Heiter , P. Jofré

Deriving atmospheric parameters of a large sample of stars is of vital importance to understand the formation and evolution of the Milky Way. Photometric surveys, especially those with near-ultraviolet filters, can offer accurate…

Solar and Stellar Astrophysics · Physics 2024-01-15 Ruifeng Shi , Yang Huang , Xinyi Li , Huawei Zhang

The AMBRE project is a collaboration between the European Southern Observatory (ESO) and the Observatoire de la Cote d'Azur (OCA). It has been established to determine the stellar atmospheric parameters (effective temperature, surface…

Instrumentation and Methods for Astrophysics · Physics 2014-10-22 Marco De Pascale , C. Clare Worley , Patrick de Laverny , Alejandra Recio-Blanco , Vanessa Hill , Albert Bijaoui

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…

Stellar spectroscopic classification has been successfully automated by a number of groups. Automated classification and parameterization work best when applied to a homogeneous data set, and thus these techniques primarily have been…

Astrophysics · Physics 2007-05-23 Ted von Hippel , Carlos Allende Prieto , Chris Sneden

The Chinese Space Station Survey Telescope (CSST) is a flagship space-based observatory. Its main survey camera is designed to conduct high spatial resolution near-ultraviolet to near-infrared imaging and low-resolution spectroscopic…

The Gamma-ray Large Area Space Telescope (GLAST) is a space-based observatory scheduled to launch in October 2007 with two instruments: (1) the GLAST Burst Monitor (GBM), sensitive to photon energies between 8 keV and 25 MeV and optimized…

Astrophysics · Physics 2008-11-26 Jennifer E. Carson

The currently operating space missions, as well as those that will be launched in the near future, (will) deliver high-quality data for millions of stellar objects. Since the majority of stellar astrophysical applications still (at least…

Solar and Stellar Astrophysics · Physics 2015-09-23 Andrew Tkachenko