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200 papers

The MONS space experiment will be able to verify some of the most important topics in the asteroseismologic studies of Delta Sct and Gamma Dor stars. We discuss how the $\gamma$ Doradus can be considered possible "bridges" between the…

Astrophysics · Physics 2007-05-23 F. M. Zerbi , E. Poretti , C. Aerts , G. Handler , A. B. Kaye

Solar-like oscillations in red-giant stars are now commonly detected in thousands of stars with space telescopes such as the NASA Kepler mission. Parallel radial velocity and photometric measurements would help to better understand the…

Star clusters are superb astrophysical laboratories containing cospatial and coeval samples of stars with similar chemical composition. We have initiated the Sejong Open cluster Survey (SOS) - a project dedicated to providing homogeneous…

Solar and Stellar Astrophysics · Physics 2015-06-16 Hwankyung Sung , Beomdu Lim , Michael S. Bessell , Jinyoung S. Kim , Hyenoh Hur , Moo-Young Chun , Byeong-Gon Park

We describe the scientific motivation behind, and the methodology of, the Stanford Cluster Search (StaCS), a program to compile a catalog of optically selected clusters of galaxies at intermediate and high (0.3 < z < 1) redshifts. The…

Super-ASTROD (Super Astrodynamical Space Test of Relativity using Optical Devices or ASTROD III) is a mission concept with 3-5 spacecraft in 5 AU orbits together with an Earth-Sun L1/L2 spacecraft ranging optically with one another to probe…

Astrophysics · Physics 2009-11-13 Wei-Tou Ni

Designing compact instruments is the key for the scientific exploration by smaller spacecrafts such as cubesats or by deep space missions. Such missions require compact instrument designs to have minimal instrument mass. Here we present a…

Instrumentation and Methods for Astrophysics · Physics 2023-05-10 Sanjay Gosain , Jack Harvey , Valentin Martinez-Pillet , Tom Woods , Frank Hill

The construction of a massive (~ 40 ton) spherical antennas for gravitational wave astronomy has been proposed by a number of groups worldwide. Summed over all five quadrupole modes, the sphere has a direction-independent cross section,…

General Relativity and Quantum Cosmology · Physics 2016-01-27 Ho Jung Paik

The primary observational goals of the Sloan Digital Sky Survey are to obtain CCD imaging of 10,000 deg^2 of the north Galactic cap in five passbands, with a limiting magnitude in the r-band of 22.5, to obtain spectroscopic redshifts of…

Astrophysics · Physics 2007-05-23 M. Bernardi

Sun-like stellar oscillations are excited by turbulent convection and have been discovered in some 500 main sequence and sub-giant stars and in more than 12,000 red giant stars. When such stars are near gravitational wave sources, low-order…

Solar and Stellar Astrophysics · Physics 2015-07-14 Ilídio Lopes , Joseph Silk

The Transiting Exoplanet Survey Satellite (TESS) mission has provided photometric light curves for stars across nearly the entire sky. This allows for the application of asteroseismology to a pool of potential solar-like oscillators that is…

In order to map the galaxy density field in the local universe, we select the Nearby Optical Galaxy (NOG) sample, which is a distance-limited (cz < 6000 km/s) and magnitude--limited (B < 14 mag) sample of 7076 optical galaxies which covers…

Astrophysics · Physics 2007-05-23 G. Giuricin , C. Marinoni , L. Ceriani , A. Pisani

The concept of the Solar Ring mission was gradually formed from L5/L4 mission concept, and the proposal of its pre-phase study was funded by the National Natural Science Foundation of China in November 2018 and then by the Strategic…

We present a new catalog of stars for which detected solar-like oscillations and magnetic activity measurements are both available from chromospheric spectroscopic observations. Our results were obtained by exploiting NASA TESS mission…

Solar and Stellar Astrophysics · Physics 2024-01-30 E. Corsaro , A. Bonanno , C. Kayhan , M. P. Di Mauro , R. Reda , L. Giovannelli

Fundamental stellar parameters such as mass and radius are some of the most important building blocks in astronomy, both when it comes to understanding the star itself and when deriving the properties of any exoplanet(s) they may host.…

Planetary nebulae are now well established as probes of galaxy dynamics and as standard candles in distance determinations. Motivated by the need to improve the efficiency of planetary nebulae searches and the speed with which their radial…

(Abridged) In this paper, we present a project of multi-channel wide-field optical sky monitoring system with high temporal resolution -- Small Aperture Imaging Network Telescope (SAINT) -- mostly built from off-the-shelf components and…

Instrumentation and Methods for Astrophysics · Physics 2023-12-05 Grigory Beskin , Anton Biryukov , Alexey Gutaev , Sergey Karpov , Gor Oganesyan , Gennady Valyavin , Azamat Valeev , Valery Vlasyuk , Nadezhda Lyapsina , Vyacheslav Sasyuk

We review techniques for measuring stellar oscillations in solar-type stars. Despite great efforts, no unambiguous detections have been made. A new method, based on monitoring the equivalent widths of strong lines, shows promise but is yet…

Astrophysics · Physics 2007-05-23 Hans Kjeldsen , Timothy R. Bedding

Solar filament oscillations have been known for decades. Now thanks to the new capabilities of the new telescopes, these periodic motions are routinely observed. Oscillations in filaments show key aspects of their structure. A systematic…

Solar and Stellar Astrophysics · Physics 2022-10-26 Manuel Luna , Joan-René Merou Mestre , Frédéric Auchère

The solar gravitational lens (SGL) offers unique capabilities for high-resolution imaging of faint, distant objects, such as exoplanets. In the near future, a spacecraft carrying a meter-class telescope with a solar coronagraph would be…

General Relativity and Quantum Cosmology · Physics 2022-02-09 Slava G. Turyshev , Viktor T. Toth