Zobrazeno 1 - 10
of 58
pro vyhledávání: '"DOUGLAS BRENNER"'
Autor:
Neil T. Zimmerman, E. Bacchus, Rebecca Oppenheimer, Christopher T. Matthews, Rick Burruss, Laurent Pueyo, Thomas Lockhart, Aaron Veicht, Justin R. Crepp, L. C. Roberts, Ricky Nilsson, Jonathan Aguilar, Alexandros Gianninas, Ian Parry, Rémi Soummer, Mukremin Kilic, S. Luszcz-Cook, Richard Dekany, Douglas Brenner, Emily L. Rice, C. A. Beichman, Lynne A. Hillenbrand, Chengxing Zhai, David A. King, Eric Cady, Anand Sivaramakrishnan, Gautam Vasisht
We present the first near infra-red spectrum of the faint white dwarf companion HD 114174 B, obtained with Project 1640. Our spectrum, covering the Y, J and H bands, combined with previous TRENDS photometry measurements, allows us to place further co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da756aa319b809225fbf590b05f50f0d
https://www.repository.cam.ac.uk/handle/1810/279801
https://www.repository.cam.ac.uk/handle/1810/279801
Autor:
Lewis C. Roberts, Rémi Soummer, James R. Graham, Gilles Chabrier, J. R. Kuhn, Ben R. Oppenheimer, Anand Sivaramakrishnan, Neil Zimmerman, Sasha Hinkley, Douglas Brenner, Michal Simon, Isabelle Baraffe, Robert A. Brown, James P. Lloyd, Jérémy Leconte, Russell Makidon, Marshall D. Perrin
Publikováno v:
The Astrophysical Journal. 716:1551-1565
The Lyot project used an optimized Lyot coronagraph with Extreme Adaptive Optics at the 3.63m Advanced Electro-Optical System telescope (AEOS) to observe 86 stars from 2004 to 2007. In this paper we give an overview of the survey results and a statis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c9b24d178c78f079f3763420f06a5ae
https://doi.org/10.1088/0004-637x/716/2/1551
https://doi.org/10.1088/0004-637x/716/2/1551
Autor:
Charles Beichman, Anand Sivaramakrishnan, Ben R. Oppenheimer, Antonin Bouchez, Justin R. Crepp, Gautam Vasisht, Rémi Soummer, Michael Shao, Lewis C. Roberts, David L. King, Stephanie Hunt, Douglas Brenner, Sasha Hinkley, Lynne A. Hillenbrand, Richard Dekany, Neil Zimmerman, Jennifer E. Roberts, Ian Parry, Rick Burruss
Publikováno v:
The Astrophysical Journal. 709:733-740
The A5V star Alcor has an M3-M4 dwarf companion, as evidenced by a novel astrometric technique. Imaging spectroscopy combined with adaptive optics coronagraphy allowed for the detection and spectrophotometric characterization of the point source at a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::311cc146d3ae1cfbf1aab9263dd7b40d
https://doi.org/10.1088/0004-637x/709/2/733
https://doi.org/10.1088/0004-637x/709/2/733
Autor:
James R. Graham, James P. Lloyd, Marshall D. Perrin, Lewis C. Roberts, Sasha Hinkley, Jeff Kuhn, Rémi Soummer, Douglas Brenner, Ben R. Oppenheimer, Anand Sivaramakrishnan
Publikováno v:
The Astrophysical Journal. 701:804-810
We demonstrate the versatility of a dual imaging polarimeter working in tandem with a Lyot coronagraph and Adaptive Optics to suppress the highly static speckle noise pattern--the greatest hindrance to ground-based direct imaging of planets and disks
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4da8835307b1be9778acb739d1f5b9a1
https://doi.org/10.1088/0004-637x/701/1/804
https://doi.org/10.1088/0004-637x/701/1/804
Autor:
Douglas Brenner, James P. Lloyd, Rémi Soummer, Anand Sivaramakrishnan, Lewis C. Roberts, Marshall D. Perrin, Ben R. Oppenheimer, James R. Graham, Sasha Hinkley, Jacob L. Mey, Russell B. Makidon, Jeff Kuhn
Publikováno v:
Comptes Rendus Physique. 8:355-364
We present a retrospective on, and some new imaging data from The Lyot Project JHK coronagraph which is used behind the 3.6 m AEOS 941-channel AO telescope on Mt. Haleakala, on the island of Maui in Hawaii. This instrument is the first ‘extreme ada
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::698a0bbaf11cb1eb4d001b694cb511f0
https://doi.org/10.1016/j.crhy.2007.04.001
https://doi.org/10.1016/j.crhy.2007.04.001
Autor:
Sasha Hinkley, Rémi Soummer, Douglas Brenner, Russell B. Makidon, Ben R. Oppenheimer, Marshall D. Perrin, Lewis C. Roberts, Laura Newburgh, Anand Sivaramakrishnan, Jeff Kuhn, Michael M. Shara, James R. Graham, James P. Lloyd, Paul Kalas, Andrew Digby
Publikováno v:
The Astrophysical Journal. 650:484-496
A coronagraph in conjunction with adaptive optics provides an effective means to image faint companions of nearby stars from the ground. The images from such a system are complex, however, and need to be fully characterized and understood before plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdfa81711b938199b2d2e7428554202c
https://doi.org/10.1086/506339
https://doi.org/10.1086/506339
Autor:
Douglas Brenner, Ben R. Oppenheimer, Kaitlin M. Kratter, Andrew Digby, Sasha Hinkley, Marshall D. Perrin, Rémi Soummer, Russell B. Makidon, L. C. Roberts, Jeff Kuhn, Anand Sivaramakrishnan
Publikováno v:
EAS Publications Series. 22:199-212
In this communication we illustrate the main steps required for the preprocessing of the Lyot Project Coronagraph data, starting from the raw data to the reduced data. We then discuss the estimation of the performance on direct, unocculted data, by m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc445f1bcd956da4074c660990d5654b
https://doi.org/10.1051/eas:2006133
https://doi.org/10.1051/eas:2006133
High dynamic-range imagers aim to block out or null light from a very bright primary star to make it possible to detect and measure far fainter companions; in real systems a small fraction of the primary light is scattered, diffracted, and unocculted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::512b3b229c50227b6a6552f8db2aba88
Autor:
Thomas Lockhart, Jonathan Aguilar, Christopher T. Matthews, Lynne A. Hillenbrand, Eric Cady, Rebecca Oppenheimer, Aaron Veicht, Paige Giorla, Rémi Soummer, S. Luszcz-Cook, Douglas Brenner, L. C. Roberts, Ricky Nilsson, Justin R. Crepp, Gautam Vasisht, Anand Sivaramakrishnan, Laurent Pueyo, Sasha Hinkley, Charles Beichman, Chengxing Zhai, Emily L. Rice
HD 19467 B is presently the only directly imaged T dwarf companion known to induce a measurable Doppler acceleration around a solar type star. We present spectroscopy measurements of this important benchmark object taken with the Project 1640 integra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6634fec20da00f2cc53a4198e6d5998b
Autor:
Anand Sivaramakrishnan, Jordan Hoffmann, Christoph Baranec, David A. King, C. A. Beichman, Rebecca Oppenheimer, Aaron Veicht, Neil T. Zimmerman, Eric Cady, Laurent Pueyo, M. Shao, Chengxing Zhai, Jenny Roberts, L. C. Roberts, Richard Dekany, E. R. Ligon, Emily L. Rice, Lynne A. Hillenbrand, David Hale, Sasha Hinkley, Fred Vescelus, James R. Graham, Ricky Nilsson, Gautam Vasisht, Douglas Brenner, Rick Burruss, Justin R. Crepp, James Wallace, Ian Parry, Thomas Lockhart, Tuan Truong, Rémi Soummer
We present an analysis of the orbital motion of the four sub-stellar objects orbiting HR8799. Our study relies on the published astrometric history of this system augmented with an epoch obtained with the Project 1640 coronagraph + Integral Field Spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1fe3705ca65f7eaad5c73c29c001433