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200 papers

We present 248 speckle observations of 43 binary and 19 trinary star systems chosen to make progress in two main areas of investigation: the fundamental properties of metal poor stars and star formation mechanisms. The observations were…

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

Cosmology experiments at mm-wavelengths can detect Planet Nine if it is the size of Neptune, has an effective temperature of 40 K, and is 700 AU from the Sun. It would appear as a ~30 mJy source at 1 mm with an annual parallax of ~5 arcmin.…

Earth and Planetary Astrophysics · Physics 2016-04-27 Nicolas B. Cowan , Gil Holder , Nathan A. Kaib

This project presents the development and implementation of a compact spectrometer, named SPECTRUMMATE, tailored for small telescopes. Small telescopes offer several advantages: they are cost-effective, occupy less space, and are simpler to…

Instrumentation and Methods for Astrophysics · Physics 2025-11-25 Hien Phan-Thanh , Nguyen Nguyen-Duc , Thuy Le-Quang , Tobias C. Hinse , Quang Nguyen-Luong

We present 36 observations of 17 visual binaries of moderate separation (range from 0.15'' to 0.79'') made with the 50 cm Cassegrain telescope of the Jagiellonian University in Cracow. The speckle interferometry technique was combined with…

Astrophysics · Physics 2009-11-11 Artur Rutkowski , Waclaw Waniak

We present results from Speckle inteferometric observations of fifteen visual binaries and one double-line spectroscopic binary, carried out with the HRCam Speckle camera of the SOAR 4.1 m telescope. These systems were observed as a part of…

Solar and Stellar Astrophysics · Physics 2021-03-10 Rene A. Mendez , Ruben M. Claveria , Edgardo Costa

PLATO 2.0 has recently been selected for ESA's M3 launch opportunity (2022/24). Providing accurate key planet parameters (radius, mass, density and age) in statistical numbers, it addresses fundamental questions such as: How do planetary…

Earth and Planetary Astrophysics · Physics 2015-06-17 H. Rauer , C. Catala , C. Aerts , T. Appourchaux , W. Benz , A. Brandeker , J. Christensen-Dalsgaard , M. Deleuil , L. Gizon , M. -J. Goupil , M. Güdel , E. Janot-Pacheco , M. Mas-Hesse , I. Pagano , G. Piotto , D. Pollacco , N. C. Santos , A. Smith , J. -C. , Suárez , R. Szabó , S. Udry , V. Adibekyan , Y. Alibert , J. -M. Almenara , P. Amaro-Seoane , M. Ammler-von Eiff , M. Asplund , E. Antonello , W. Ball , S. Barnes , F. Baudin , K. Belkacem , M. Bergemann , G. Bihain , A. C. Birch , X. Bonfils , I. Boisse , A. S. Bonomo , F. Borsa , I. M. Brandão , E. Brocato , S. Brun , M. Burleigh , R. Burston , J. Cabrera , S. Cassisi , W. Chaplin , S. Charpinet , C. Chiappini , R. P. Church , Sz. Csizmadia , M. Cunha , M. Damasso , M. B. Davies , H. J. Deeg , R. F. DÍaz , S. Dreizler , C. Dreyer , P. Eggenberger , D. Ehrenreich , P. Eigmüller , A. Erikson , R. Farmer , S. Feltzing , F. de Oliveira Fialho , P. Figueira , T. Forveille , M. Fridlund , R. A. García , P. Giommi , G. Giuffrida , M. Godolt , J. Gomes da Silva , T. Granzer , J. L. Grenfell , A. Grotsch-Noels , E. Günther , C. A. Haswell , A. P. Hatzes , G. Hébrard , S. Hekker , R. Helled , K. Heng , J. M. Jenkins , A. Johansen , M. L. Khodachenko , K. G. Kislyakova , W. Kley , U. Kolb , N. Krivova , F. Kupka , H. Lammer , A. F. Lanza , Y. Lebreton , D. Magrin , P. Marcos-Arenal , P. M. Marrese , J. P. Marques , J. Martins , S. Mathis , S. Mathur , S. Messina , A. Miglio , J. Montalban , M. Montalto , M. J. P. F. G. Monteiro , H. Moradi , E. Moravveji , C. Mordasini , T. Morel , A. Mortier , V. Nascimbeni , R. P. Nelson , M. B. Nielsen , L. Noack , A. J. Norton , A. Ofir , M. Oshagh , R. -M. Ouazzani , P. Pápics , V. C. Parro , P. Petit , B. Plez , E. Poretti , A. Quirrenbach , R. Ragazzoni , G. Raimondo , M. Rainer , D. R. Reese , R. Redmer , S. Reffert , B. Rojas-Ayala , I. W. Roxburgh , S. Salmon , A. Santerne , J. Schneider , J. Schou , S. Schuh , H. Schunker , A. Silva-Valio , R. Silvotti , I. Skillen , I. Snellen , F. Sohl , S. G. Sousa , A. Sozzetti , D. Stello , K. G. Strassmeier , M. Švanda , Gy. M. Szabó , A. Tkachenko , D. Valencia , V. van Grootel , S. D. Vauclair , P. Ventura , F. W. Wagner , N. A. Walton , J. Weingrill , S. C. Werner , P. J. Wheatley , K. Zwintz

The Space Interferometry Mission PlanetQuest Light (or SIM-Lite) is a new concept for a space borne astrometric instrument, to be located in a solar Earth-trailing orbit. SIM-Lite utilizes technology developed over the past ten years for…

Astrophysics · Physics 2009-11-13 R. Goullioud , J. H. Catanzarite , F. G. Dekens , M. Shao , J. C. Marr

In this paper we present the "Small Bodies: Near and Far" Infrared Database, an easy-to-use tool intended to facilitate the modeling of thermal emission of small Solar System bodies. Our database collects thermal emission measurements of…

Instrumentation and Methods for Astrophysics · Physics 2020-03-11 Róbert Szakáts , Thomas Müller , Víctor Alí-Lagoa , Gábor Marton , Anikó Farkas-Takács , Evelin Bányai , Csaba Kiss

The Spitzer Space Telescope, NASA's Great Observatory for infrared astronomy, has made available new tools for the investigation of the infrared properties of planetary nebulae. The three instruments onboard, including the Infrared Array…

Astrophysics · Physics 2007-08-31 Joseph L. Hora

Occultations, the covering up of one celestial body by another celestial body, have been used in astronomy for millennia to learn about the sun and moon. Since 2018, VERITAS has implemented a program to detect predicted asteroid…

Instrumentation and Methods for Astrophysics · Physics 2025-12-15 Joshua Bartkoske , Anne Duerr , Dave Kieda

A defocused image of a bright single star in a small telescope contains rich information on the optical turbulence, i.e. the seeing. The concept of a novel turbulence monitor based on recording sequences of ring-like intrafocal images and…

Instrumentation and Methods for Astrophysics · Physics 2021-01-13 Andrei Tokovinin

In this paper, I discuss the capabilities and limitations of an 8-10 meter ultraviolet/optical telescope in space, the proposed successor to the Hubble Space Telescope, in the context of galaxy studies. The exquisite spatial resolution and…

Astrophysics · Physics 2007-05-23 Rachel S. Somerville

A new 10 meter diameter telescope is being constructed for deployment at the NSF South Pole research station. The telescope is designed for conducting large-area millimeter and sub-millimeter wave surveys of faint, low contrast emission, as…

A high-granularity telescope system with a large sensitive area and low material budget has been developed for high-energy heavy ion beam tests. The telescope consists of nine layers of silicon microstrip detectors (SSDs), whose performance…

Since 2007, close binary and multiple stars are observed by speckle interferometry at the 4.1 m Southern Astrophysical Research (SOAR) telescope. The HRCam instrument, observing strategy and planning, data processing and calibration…

Instrumentation and Methods for Astrophysics · Physics 2018-02-21 Andrei Tokovinin

I show that a dedicated space telescope with a meter-size aperture can detect numerous interstellar objects, 10-m in diameter, that pass within ~20 degrees from the Sun. Separating the emitted thermal radiation from the reflection of…

Instrumentation and Methods for Astrophysics · Physics 2025-02-13 Abraham Loeb

Using the adaptive optics facilities at the 200-in Hale and 10-m Keck II, we observed in the near infrared a sample of 12 binary and multiple stars and one open cluster. We used the near diffraction limited images of these systems to…

Earth and Planetary Astrophysics · Physics 2015-05-14 K. G. Hełminiak , M. Konacki , S. R. Kulkarni , J. Eisner

The previous decade saw the discovery of the first four known interstellar objects due to advances in astronomical viewing equipment. Future sky surveys with greater sensitivity will allow for more frequent detections of such objects,…

Instrumentation and Methods for Astrophysics · Physics 2023-03-28 Carson Ezell , Abraham Loeb

We update the science prospects for the recently completed AMANDA South Pole neutrino detector. With an effective telescope area of order 10^4 m^2 and a threshold of ~50 GeV, it represents the first instrument of a new generation of high…

Astrophysics · Physics 2009-10-30 Francis Halzen