Results 21 to 30 of about 12,301 (190)

Spatially resolved mid-infrared observations of the triple system T Tauri [PDF]

, 2009
To enhance our knowledge of the characteristics and distribution of the circumstellar dust associated with the individual components of the young hierarchical triple system T Tau, observations in the N-band with MIDI at the VLTI were performed. Our study
A. A. Schegerer, Akeson, Akeson, Akeson, Andrews, Appenzeller, Beck, Beckwith, Bessell, Bonnell, Bonnell, Bouwman, Böhm, Bührke, Ch. Leinert, D'Alessio, Dorschner, Draine, Draine, Duchêne, Duchêne, Duchêne, Dyck, Eislöffel, Ford, Ghez, Gustafsson, H. Zinnecker, Hall, Hartkopf, Henning, Henning, Herbst, Herbst, Herbst, Hogerheijde, Hummel, Jaffe, Johns-Krull, Joy, Jäger, Kemper, Koresko, Koresko, Koresko, Köhler, Köhler, Königl, Leinert, Leinert, Leinert, Loinard, Mathis, Morel, Ossenkopf, P. Ábrahám, Pringle, R. Köhler, Ratzka, Reipurth, Rieke, S. Wolf, Schegerer, Schegerer, Schräpler, Servoin, Skemer, Solf, Stapelfeldt, T. M. Herbst, Th. Henning, Th. Ratzka, van Boekel, Walter, Weingartner, White, Wolf, Wolf, Wolf, Wolf, Zinnecker, Ábrahám   +81 more
core   +1 more source

The SPHINX M-dwarf Spectral Grid. I. Benchmarking New Model Atmospheres to Derive Fundamental M-dwarf Properties

The Astrophysical Journal, 2023
About 70%–80% of stars in our solar and Galactic neighborhood are M dwarfs. They span a range of low masses and temperatures relative to solar-type stars, facilitating molecule formation throughout their atmospheres.
Aishwarya R. Iyer, Michael R. Line, Philip S. Muirhead, Jonathan J. Fortney, Ehsan Gharib-Nezhad   +4 more
doaj   +1 more source

Interferometric Observations of Disks around PMS Binary Stars [PDF]

Symposium - International Astronomical Union, 2001
Current millimetre arrays are well suited to study the gas and dust distribution around young binary systems of separation ∼ 0.3–3″. In particular, they clearly demonstrate that disks around binary systems are tidally truncated. I review here the observed properties at mm wavelengths of the gas and dust around the best known multiple systems.
openaire   +1 more source

Graviton Mass in the Era of Multi-Messenger Astronomy

Universe, 2022
The idea of massive graviton plays a fundamental role in modern physics as a landmark of most scenarios related to modified gravity theories. Limits on graviton mass can be obtained through different methods, using all the capabilities of multi-messenger
Aleksandra Piórkowska-Kurpas
doaj   +1 more source

Stellar Intensity Interferometry: Astrophysical targets for sub-milliarcsecond imaging [PDF]

, 2010
Intensity interferometry permits very long optical baselines and the observation of sub-milliarcsecond structures. Using planned kilometric arrays of air Cherenkov telescopes at short wavelengths, intensity interferometry may increase the spatial ...
Dravins, Dainis, Jensen, Hannes, LeBohec, Stephan, Nuñez, Paul D.   +3 more
core   +1 more source

Astronomical optical interferometry, II: Astrophysical results [PDF]

Serbian Astronomical Journal, 2011
Optical interferometry is entering a new age with several ground- based long-baseline observatories now making observations of unprecedented spatial resolution.
Jankov S.
doaj   +1 more source

Speckle interferometric observations of close binary stars

, 2002
3 pages TeX file including 1 figure. Bull. Astron. Soc. Ind., 2002 (accepted)
Saha, S. K., Chinnappan, V., Yeswanth, L., Anbazhagan, P.   +3 more
openaire   +2 more sources

Differential Astrometry of Sub-arcsecond Scale Binaries at the Palomar Testbed Interferometer [PDF]

, 2003
We have used the Palomar Testbed Interferometer to perform very high precision differential astrometry on the 0.25 arcsecond separation binary star HD 171779.
Lane, B. F., Muterspaugh, M. W.
core   +1 more source

Chromosphere of K giant stars Geometrical extent and spatial structure detection

, 2011
We aim to constrain the geometrical extent of the chromosphere of non-binary K giant stars and detect any spatial structures in the chromosphere. We performed observations with the CHARA interferometer and the VEGA beam combiner at optical wavelengths ...
A. Spang, Andretta, Ayres, B. Pichon, Baines, Berio, Bonneau, Brown, Busà, C. Farrington, Carpenter, Chen, Claret, Cuntz, Cuntz, D. Bonneau, D. Mourard, di Benedetto, Diaz-Cordoves, Dyck, Eaton, Eriksson, F. Thévenin, Gustafsson, H. McAlister, Hall, Houdashelt, I. Tallon-Bosc, J. M. Clausse, J. Sturmann, Judge, K. Perraut, Kovacs, L. Sturmann, Linsky, Luck, Massarotti, McWilliam, Meilland, Montes, Morel, Mourard, Mozurkewich, N. Nardetto, N. Turner, O. Chesneau, O. Delaa, P. Berio, P. J. Goldfinger, P. Stee, Perryman, Pietrinferni, R. Ligi, Reimers, Richichi, Simon, Skrutskie, T. Merle, T. ten Brummelaar, ten Brummelaar, van Belle, van Leeuwen, White   +62 more
core   +3 more sources

The Calibration of Interferometrically Determined Properties of Binary Stars [PDF]

Symposium - International Astronomical Union, 1985
With the advent of speckle interferometry, high angular resolution has begun to play a routine role in the study of binary stars. Speckle and other interferometric techniques not only bring enhanced resolution to this classic and fundamental field but provide an equally important gain in observational accuracy.
openaire   +1 more source