Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Larry Ramsey"'
Autor:
Steinn Sigurdsson, Fred Hearty, Kartik Srinivasan, Kyle Kaplan, Steve Osterman, Gabriel Ycas, Emily Lubar, Joe P. Ninan, Jeff Jennings, Eric Levi, Larry Ramsey, Jason T. Wright, Gudmundur Stefansson, Samuel Halverson, Andrew J. Monson, Franklyn Quinlan, Wesley Brand, Christian Schwab, Colin Nitroy, Tyler Anderson, Andrew J. Metcalf, David A. Sterner, Arpita Roy, Scott A. Diddams, Scott B. Papp, David R. Carlson, William D. Cochran, Ryan Terrien, Connor Fredrick, Daniel D. Hickstein, Chad F. Bender, Michael Endl, Shubham Kanodia, Alex Wolszczan, Scott Blakeslee, Paul Robertson, Suvrath Mahadevan
The discovery and characterization of exoplanets around nearby stars are driven by profound scientific questions about the uniqueness of Earth and our solar system, and the conditions under which life could exist elsewhere in our galaxy. Doppler spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::433d1b1a7e96ed83906c2cbb909fd4cf
Autor:
Ryan Terrien, Christian Schwab, Arpita Roy, Gudmundur Stefansson, Suvrath Mahadevan, Chad F. Bender, Matthew Shetrone, F. Hearty, Matthew J. Nelson, Eric Levi, Paul Robertson, Larry Ramsey, Samuel Halverson, Andrew J. Monson, Tyler Anderson
Publikováno v:
SPIE Proceedings.
We describe the Instrument Control Software (ICS) package that we have built for The Habitable-Zone Planet Finder (HPF) spectrometer. The ICS controls and monitors instrument subsystems, facilitates communication with the Hobby-Eberly Telescope facil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84d41a8f35cb431fd81cd056f86d3b31
https://doi.org/10.1117/12.2233011
https://doi.org/10.1117/12.2233011
Autor:
Chad F. Bender, Andrew J. Monson, Larry Ramsey, Samuel Halverson, Ryan Terrien, Suvrath Mahadevan
Publikováno v:
SPIE Proceedings.
Infrared detectors with cutoff wavelengths of ~ 1.7 μm have much lower sensitivity to thermal background contamination than those with longer cutoff wavelengths. This low sensitivity offers the attractive possibility of reducing the need for fully c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f236fa19fa00a4b02f608178f19b313
https://doi.org/10.1117/12.2231195
https://doi.org/10.1117/12.2231195
Autor:
Jorge Sanz-Forcada, E. de Castro, M. Cornide, D. Montes, Larry Ramsey, M. J. Fernandez-Figueroa
Publikováno v:
Astrophysics and Space Science. 263:279-282
We summarize here our ongoing project of multiwavelength optical observations aimed at studying the chromosphere of active binary systems, using the information provided for several optical spectroscopic features, that are formed at different heights
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee52a0f8fcd0a50ad302cd7b1ec52525
https://doi.org/10.1023/a:1002199320789
https://doi.org/10.1023/a:1002199320789
Autor:
C. G. Tinney, John Rayner, Ian Egan, David Montgomery, Andy Adamson, Bill Vacca, David Henry, Derek Ives, John R. Barnes, Michael C. Liu, Phil Rees, Larry Ramsey, David Lunney, Hugh R. A. Jones, Ian Bryson
Publikováno v:
Thirty Years of Astronomical Discovery with UKIRT ISBN: 9789400774315
We present a conceptual design for the UKIRT Planet Finder (UPF). It is a fibre-fed high resolving power (R ∼ 70,000 at 2.5 pixel sampling) cryogenic echelle spectrograph operating in the near infrared (0.95–1.8 μm) and is designed to provide 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e64a368f3e0031f96286d94757c1065
https://doi.org/10.1007/978-94-007-7432-2_31
https://doi.org/10.1007/978-94-007-7432-2_31
Autor:
Chad F. Bender, Scott A. Diddams, Gabriel Ycas, Ryan Terrien, Steven N. Osterman, Larry Ramsey, Franklyn Quinlan, Suvrath Mahadevan, Stephen L. Redman
Publikováno v:
Scopus-Elsevier
A 25 GHz frequency comb for calibration of astronomical spectrographs in the 1.4–1.65 μm region is demonstrated with the R=50,000 λ/Δλ Pathfinder spectrograph at the Hobby-Eberly telescope.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b293491979de55ff07e79f3001c0a80d
https://doi.org/10.1364/cleo_si.2011.cwq1
https://doi.org/10.1364/cleo_si.2011.cwq1
Autor:
Chad F. Bender, Larry Ramsey, Stephen L. Redman, Suvrath Mahadevan, Steinn Sigurdsson, Alex Wolszczan, S. G. Zonak, Arpita Roy
The Penn State Pathfinder is a prototype warm fiber-fed Echelle spectrograph with a Hawaii-1 NIR detector that has already demonstrated 7-10 m/s radial velocity precision on integrated sunlight. The Pathfinder testbed was initially setup for the Gemi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66923b9726ac747c1b2efab001ed89d8
http://arxiv.org/abs/1009.0477
http://arxiv.org/abs/1009.0477
Autor:
Steinn Sigurdsson, Leland G. Engel, Larry Ramsey, Michael Endl, Jason T. Wright, Nathaniel Troupe, Bo Zhao, Arpita Roy, Suvrath Mahadevan, Alex Wolszczan, Stephen L. Redman, S. G. Zonak, Chad F. Bender
Publikováno v:
SPIE Proceedings.
The Habitable Zone Planet Finder (HZPF) is a proposed instrument for the 10m class Hobby Eberly telescope that will be capable of discovering low mass planets around M dwarfs. HZPF will be fiber-fed, provide a spectral resolution R~ 50,000 and cover
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b32bd16c9987a5b26f053a01077128a9
https://doi.org/10.1117/12.857551
https://doi.org/10.1117/12.857551
Autor:
Larry Ramsey, Y. Pavlenko, H. R. A. Jones, James S. Jenkins, José A. Gallardo, John R. Barnes, D. J. Pinfield
Publikováno v:
Astrophysical Journal
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
We present spectroscopic rotation velocities (v sin i) for 56 M dwarf stars using high resolution HET HRS red spectroscopy. In addition we have also determined photometric effective temperatures, masses and metallicities ([Fe/H]) for some stars obser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4353421eb5cf180abb61acff0652c883
http://arxiv.org/abs/0908.4092
http://arxiv.org/abs/0908.4092
Autor:
Bill Dent, John R. Barnes, Larry Ramsey, Bill Vacca, John Rayer, Michael C. Liu, Andy Longmore, Hugh R. A. Jones, Adrian Webster, Alex Wolscznan
Publikováno v:
Astrophysics and Space Science Proceedings ISBN: 9781402091896
Over 250 extra-solar planets have been discovered to date using a variety of techniques. The majority have been discovered at optical wavelengths from the Doppler shift of F, G and K stars induced by orbiting planets. We have constructed models simul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fefbb090755315500aa5cc24b32f8aa1
https://doi.org/10.1007/978-1-4020-9190-2_74
https://doi.org/10.1007/978-1-4020-9190-2_74