Bibliografías temáticas / Near Infrared long-Baseline interferometry

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Literatura académica sobre el tema "Near Infrared long-Baseline interferometry"

Autor: Grafiati
Publicado: 19 de octubre de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Near Infrared long-Baseline interferometry"

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Pan, Xiaopei, Shri Kulkarni, Michael Shao, and M. Mark Colavita. "Narrow-Angle and Wide-Angle Astrometry via Long Baseline Optical/Infrared Interferometers." Symposium - International Astronomical Union 166 (1995): 13–18. http://dx.doi.org/10.1017/s0074180900227769.

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Long baseline optical/infrared interferometers, such as the Mark III Stellar Interferometer1 on Mt. Wilson and the ASEPS-0 Testbed Interferometer2 on Palomar Mountain, California, have good capabilities for narrow-angle and wide-angle astrometry with very high precision. Using the Mark III Interferometer many spectroscopic binaries became “visual” for the first time. The measurement accuracy of angular separation is 0.2 mas, the smallest separation measured between two components is 2 mas, the maximum magnitude difference is 4 mag, and the smallest semimajor axis is 4 mas. Such high angular re
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Jankov, S. "Astronomical optical interferometry, II: Astrophysical results." Serbian Astronomical Journal, no. 183 (2011): 1–35. http://dx.doi.org/10.2298/saj1183001j.

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Optical interferometry is entering a new age with several ground- based long-baseline observatories now making observations of unprecedented spatial resolution. Based on a great leap forward in the quality and quantity of interferometric data, the astrophysical applications are not limited anymore to classical subjects, such as determination of fundamental properties of stars; namely, their effective temperatures, radii, luminosities and masses, but the present rapid development in this field allowed to move to a situation where optical interferometry is a general tool in studies of many astro
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Wittkowski, Markus. "Round Table Summary: Stellar Interferometry as a Tool to Investigate Atmospheres and to Compare Observations with Models." Symposium - International Astronomical Union 210 (2003): 313–21. http://dx.doi.org/10.1017/s0074180900133455.

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Long-baseline interferometry at optical and near-infrared wavelengths is an emerging technology which is quickly becoming a useful tool to investigate stellar atmospheres and to compare observations with models. Stellar atmosphere models have so far mainly been constrained by comparisons with stellar spectra which are integrated over the stellar disks. Interferometric observations provide spatially and spectrally resolved information and can thus provide important complementary observational information which can be compared to model predictions. Here, I summarize the different aspects on this
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Kraus, S., Th Preibisch, and K. Ohnaka. "The inner gaseous accretion disk around a Herbig Be star revealed by near- and mid-infrared spectro-interferometry." Proceedings of the International Astronomical Union 3, S243 (2007): 337–44. http://dx.doi.org/10.1017/s1743921307009696.

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AbstractHerbig Ae/Be stars are pre-main-sequence stars of intermediate mass, which are still accreting material from their environment, probably via a disk composed of gas and dust. Here we present a recent study of the geometry of the inner (AU-scale) circumstellar region around the Herbig Be star MWC 147 using long-baseline interferometry. By combining for the first time near- and mid-infrared spectro-interferometry on a Herbig star, our VLTI/AMBER and VLTI/MIDI data constrain not only the geometry of the brightness distribution, but also the radial temperature distribution in the disk. The
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Dexter, J. "Event horizon scale emission models for Sagittarius A*." Proceedings of the International Astronomical Union 9, S303 (2013): 298–302. http://dx.doi.org/10.1017/s1743921314000775.

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AbstractVery long baseline interferometry observations at millimeter wavelengths have detected source structure in Sgr A* on event horizon scales. Near-infrared interferometry will achieve similar resolution in the next few years. These experiments provide an unprecedented opportunity to explore strong gravity around black holes, but interpreting the data requires physical modeling. I discuss the calculation of images, spectra, and light curves from relativistic MHD simulations of black hole accretion. The models provide an excellent description of current observations, and predict that we may
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Cruzalèbes, P., R. G. Petrov, S. Robbe-Dubois, et al. "A catalogue of stellar diameters and fluxes for mid-infrared interferometry★." Monthly Notices of the Royal Astronomical Society 490, no. 3 (2019): 3158–76. http://dx.doi.org/10.1093/mnras/stz2803.

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Abstract We present the Mid-infrared stellar Diameters and Fluxes compilation Catalogue (MDFC) dedicated to long-baseline interferometry at mid-infrared wavelengths (3–13 $\mu$m). It gathers data for half a million stars, i.e. nearly all the stars of the Hipparcos-Tycho catalogue whose spectral type is reported in the SIMBAD data base. We cross-match 26 data bases to provide basic information, binarity elements, angular diameter, magnitude and flux in the near and mid-infrared, as well as flags that allow us to identify the potential calibrators. The catalogue covers the entire sky with 465 85
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Petersen, Eric, and Charles Gammie. "Non-thermal models for infrared flares from Sgr A*." Monthly Notices of the Royal Astronomical Society 494, no. 4 (2020): 5923–35. http://dx.doi.org/10.1093/mnras/staa826.

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ABSTRACT Recent observations with mm very long baseline interferometry (mm-VLBI) and near-infrared (NIR) interferometry provide mm images and NIR centroid proper motion for Sgr A*. Of particular interest are the NIR flares that have more than an order of magnitude higher flux density than the quiescent state. Here, we model the flares using time-dependent, axisymmetric, general relativistic magnetohydrodynamic (GRMHD) simulations with an electron distribution function that includes a small, variable, non-thermal component motivated by magnetic reconnection models. The models simultaneously mat
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Wittkowski, Markus, David A. Boboltz, Malcolm D. Gray, Elizabeth M. L. Humphreys, Iva Karovicova, and Michael Scholz. "Radio and IR interferometry of SiO maser stars." Proceedings of the International Astronomical Union 8, S287 (2012): 209–16. http://dx.doi.org/10.1017/s1743921312006989.

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AbstractRadio and infrared interferometry of SiO maser stars provide complementary information on the atmosphere and circumstellar environment at comparable spatial resolution. Here, we present the latest results on the atmospheric structure and the dust condensation region of AGB stars based on our recent infrared spectro-interferometric observations, which represent the environment of SiO masers. We discuss, as an example, new results from simultaneous VLTI and VLBA observations of the Mira variable AGB star R Cnc, including VLTI near- and mid-infrared interferometry, as well as VLBA observa
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Christou, J. C. "Speckle Interferometry." Highlights of Astronomy 8 (1989): 561–62. http://dx.doi.org/10.1017/s1539299600008340.

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Speckle interferometry is a technique which utilizes the full diffraction-limited imaging potential of ground-based telescopes. Short exposure images, or specklegrams, with an exposure time less than that of the atmospheric correlation time (~5- 50 ms) preserve the high-spatial frequency information lost in long exposure imaging. In 1970, Labeyrie computed the power spectrum of a set of specklegrams and showed that they contained diffraction-limited information. Since then the field has grown with improvements in both instrumentation and the phase recovery algorithms necessary for imaging. It
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Choquet, É., J. Menu, G. Perrin, F. Cassaing, S. Lacour, and F. Eisenhauer. "Comparison of fringe-tracking algorithms for single-mode near-infrared long-baseline interferometers." Astronomy & Astrophysics 569 (September 2014): A2. http://dx.doi.org/10.1051/0004-6361/201220223.

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Tesis sobre el tema "Near Infrared long-Baseline interferometry"

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Ogden, Chad E. "A prototype visible to near-infrared spectrograph for the CHARA array a long-baseline stellar interferometer /." unrestricted, 2005. http://etd.gsu.edu/theses/available/etd-11282005-121433/.

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Thesis (Ph. D.)--Georgia State University, 2005.<br>Theo A. ten Brummelaar, committee chair; Brian D. Thoms, Todd J. Henry, William G. Bagnuolo, Douglas R. Gies, Harold A. McAlister, committee members. Author's name from thesis t.p. Electronic text (548 p. : ill.) : digital, PDF file. Description based on contents viewed June 27, 2007; title from title screen. Includes bibliographical references (p. 539-548).
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Ogden, Chad Elliott. "A Prototype Visible to Near-Infrared Spectrograph for the CHARA Array, a Long-Baseline Stellar Interferometer." Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/phy_astr_diss/4.

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This work is a description of the Visible to near Infrared Spectrograph system for the CHARA array. The CHARA Array is a 6-telescope interferometer at the Mount Wilson Observatory in the mountains north of Pasadena, California. It combines the light from the 1-meter telescopes, and measures the visibility of the resulting interference fringes, which gives information about the source intensity distribution on the sky. The resolution of the instrument is proportional to the telescope separation, or baseline, divided by the wavelength. The VIS system operates in the 600-1000~nm wavelength ran
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3

Pourré, Nicolas. "Détection par interférométrie optique d'exoplanètes géantes jeunes à l'échelle de l'unité astronomique." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALY032.

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Les observations directes fournissent des informations capitales sur les systèmes exoplanétaires. Par l'analyse de la position des planètes à différentes époques, nous pouvons déterminer leur orbite et remonter à l'histoire dynamique des systèmes. Par l'analyse de leur spectre en émission, nous pouvons déterminer la température des exoplanètes ainsi que la composition chimique de leur atmosphère, contenant des traceurs de leur mécanisme de formation.Seulement, les observations directes sont actuellement limitées. Les limites de résolution angulaire nous permettent d'observer uniquement les exo
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Grellmann, Rebekka. "Massive star formation as seen by infrared long-baseline interferometry." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-149346.

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Grellmann, Rebekka [Verfasser], and Thomas [Akademischer Betreuer] Preibisch. "Massive star formation as seen by infrared long-baseline interferometry / Rebekka Grellmann. Betreuer: Thomas Preibisch." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1027842380/34.

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Millan-Gabet, Rafael. "Investigation of Herbig Ae /Be stars in the near -infrared with a long baseline interferometer." 1999. https://scholarworks.umass.edu/dissertations/AAI9950188.

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We have conducted the first systematic study of Herbig Ae/Be stars using the technique of long baseline spatial interferometry in the near-infrared, with the objective of characterizing the distribution and properties of the circumstellar dust responsible for the excess near-infrared fluxes observed in these systems. The observations for this work have been conducted at the Infrared Optical Telescope Array (IOTA). The interferometer resolves the source of infrared excess in 11 of the 15 systems surveyed. A new binary, MWC 361-A, has been detected interferometrically for the first time. The vis
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Capítulos de libros sobre el tema "Near Infrared long-Baseline interferometry"

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Danchi, W. C., M. Bester, P. R. McCullough, and C. H. Townes. "Infrared Long Baseline Interferometry." In Highlights of Astronomy. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0977-9_89.

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Paresce, F. "Ground-Based Optical/IR Long Baseline Interferometry." In Infrared Space Interferometry: Astrophysics & the Study of Earth-Like Planets. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5468-0_13.

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Actas de conferencias sobre el tema "Near Infrared long-Baseline interferometry"

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Rajagopal, Jayadev K., Ryan Lau, Isack Padilla, et al. "Towards quantum-enhanced long-baseline optical/near-IR interferometry." In Optical and Infrared Interferometry and Imaging IX, edited by Stephanie Sallum, Joel Sanchez-Bermudez, and Jens Kammerer. SPIE, 2024. http://dx.doi.org/10.1117/12.3019518.

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Cheriton, Ross, Volodymyr Artyshchuk, Erin Tonita, et al. "Silicon photonic aperture synthesis for long baseline near-infrared interferometry." In Optical and Infrared Interferometry and Imaging IX, edited by Stephanie Sallum, Joel Sanchez-Bermudez, and Jens Kammerer. SPIE, 2024. http://dx.doi.org/10.1117/12.3019093.

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Kuś, Arkadiusz. "Dual-wavelength, near-infrared holographic tomography." In Digital Holography and Three-Dimensional Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.w4a.33.

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Dual wavelength interferometry has a long history and broad range of applications in optical measurements of objects, which exhibit phase steps greater than the single measurement wavelength [1–3]. The use of two measurements at slightly different wavelengths allows to extend the measurement range. In case of holographic tomography, the standard measurement of large samples such as organoids fails due to large refractive index differences and phase unwrapping errors. The application of synthetic wavelength allows to decrease the values of phase of the scattered wave for the synthetic wavelengt
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4

Rau, Gioia, Kenneth G. Carpenter, Tabetha Boyajian, et al. "Artemis-enabled stellar imager (AeSI): a Lunar long-baseline UV/optical imaging interferometer." In Optical and Infrared Interferometry and Imaging IX, edited by Stephanie Sallum, Joel Sanchez-Bermudez, and Jens Kammerer. SPIE, 2024. http://dx.doi.org/10.1117/12.3028797.

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Merand, Antoine, Pascal Borde, and Vincent Coude du Foresto. "A catalog of calibrator stars for 200-meter baseline near-infrared stellar interferometry." In SPIE Astronomical Telescopes + Instrumentation, edited by Wesley A. Traub. SPIE, 2004. http://dx.doi.org/10.1117/12.550757.

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Noecker, M. C., R. W. Babcock, J. D. Phillips, and R. D. Reasenberg. "POINTS: technology for micro-arcsecond optical astrometry." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.fll1.

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We discuss the technology requirements for the POINTS optical interferometric instrument. Angular resolution of 5 × 10−6 arcsec (25 prad) by using an interferometer with a 2-m baseline requires internal distance metrology at the few picometer level and precise starlight fringe splitting. We have shown long term stability of two picometers in measurements on a Michelson-type distance gauge; we will soon test a design for point- to-point distance measurements. Full-aperture metrology of the starlight path has shown promising results with the first prototype zone-plate mirror, which diffracts par
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Ireland, Michael J., Denis Defrère, Frantz Martinache, et al. "Image-plane fringe tracker for adaptive-optics assisted long baseline interferometry." In Optical and Infrared Interferometry and Imaging VI, edited by Antoine Mérand, Michelle J. Creech-Eakman, and Peter G. Tuthill. SPIE, 2018. http://dx.doi.org/10.1117/12.2314393.

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Xu, Teng, Yonghui Hou, Zhongwen Hu, et al. "Development progress of the prototype long baseline optical interferometer in China." In Optical and Infrared Interferometry and Imaging VII, edited by Antoine Mérand, Stephanie Sallum, and Peter G. Tuthill. SPIE, 2020. http://dx.doi.org/10.1117/12.2562070.

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Hofmann, Karl-Heinz, Matthias Heininger, Dieter Schertl, Gerd Weigelt, Florentin Millour, and Philippe Berio. "Image reconstruction method IRBis for optical/infrared long-baseline interferometry." In SPIE Astronomical Telescopes + Instrumentation, edited by Fabien Malbet, Michelle J. Creech-Eakman, and Peter G. Tuthill. SPIE, 2016. http://dx.doi.org/10.1117/12.2232369.

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Dooley, Jonathan, and Michelle Creech-Eakman. "Initial steps toward a new method of atmospheric characterization over long baseline arrays." In Optical and Infrared Interferometry and Imaging VI, edited by Antoine Mérand, Michelle J. Creech-Eakman, and Peter G. Tuthill. SPIE, 2018. http://dx.doi.org/10.1117/12.2313853.

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