Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Fred C. Witteborn"'
Autor:
Sandrine Thomas, Thomas P. Greene, Glenn Schneider, Richard L. Kendrick, Dana H. Lynch, Olivier Guyon, Alan L. Duncan, Troy T. Hix, Eric H. Smith, J. Wes Irwin, Eduardo Bendek, Eugene Pluzhnik, Julien Lozi, Fred C. Witteborn, Ruslan Belikov, Roger Mihara
This paper is the third in the series on the technology development for the EXCEDE (EXoplanetary Circumstellar Environments and Disk Explorer) mission concept, which in 2011 was selected by NASA's Explorer program for technology development (Category
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b89d9c54a2361b77306823a83ef7101
http://arxiv.org/abs/1407.4393
http://arxiv.org/abs/1407.4393
Publikováno v:
The Astronomical Journal. 118:1423-1429
We present 7.6–13.2 μm infrared spectrophotometry (R 120) of the inner coma of comet C/1996 Q1 (Tabur), obtained 1996 October 8–10 UT. At this epoch, the comet was at a heliocentric distance of rh = 0.96 AU. The local 10 μm continuum is fitted
Autor:
Harold M. Butner, D. H. Wooden, Chiyoe Koike, Craig W. McMurtry, Fred C. Witteborn, Charles E. Woodward, David E. Harker
Publikováno v:
The Astrophysical Journal. 517:1034-1058
We present 7.6 - 13.3 microns infrared (IR) spectrophotometry (R approx. = 180 - 350) of the 10 microns silicate emission from dust in the inner coma (i.e., within a diameter of 3in.) of comet C/1995 O1 (Hale-Bopp) at four temporal epochs from 1996 O
Autor:
Jesse D. Bregman, Diane H. Wooden, Karen R. Heere, Martin Cohen, Fred C. Witteborn, Eric L. Shirley
Publikováno v:
The Astronomical Journal. 117:2552-2560
Infrared spectra of two celestial objects frequently used as flux standards are calibrated against an absolute laboratory flux standard at a spectral resolving power of 100 to 200. The spectrum of the K1.5III star, alpha Boo, is measured from 3 micro
Publikováno v:
The Astronomical Journal. 115:1671-1679
We describe our efforts to seek "closure" in our infrared absolute calibration scheme by comparing spectra of asteroids, absolutely calibrated through reference stars, with "Standard Thermal Models" and "Thermophysical Models" for these bodies. Our u
Publikováno v:
International Astronomical Union Colloquium. 161:149-155
To assess the physical conditions in our early solar system, we have to study the disks around other stars.βPic is a main sequence star surrounded by a large dust disk,βPic’s mid-infrared spectrum bears a striking resemblance to the silicate emis
Autor:
Thomas P. Greene, Fred C. Witteborn, Olivier Guyon, Rusland Belikov, Sandrine Thomas, Eugene Pluzhnik, Julien Lozi, Glenn Schneider
Publikováno v:
SPIE Proceedings.
The detection of extrasolar planets, using both space- and ground-based telescopes, is one of the most exciting fields in astronomy today, with the ultimate goal of the direct direction of earth-like planets in the habitable zone. It is with this vis
Autor:
Julien Lozi, Ruslan Belikov, Dana H. Lynch, D. Tenerelli, K. Newman, Eugene Pluzhnik, Fred C. Witteborn, Sandrine Thomas, Olivier Guyon, Eduardo Bendek, Glenn Schneider, Thomas P. Greene
Publikováno v:
SPIE Proceedings.
Coronagraph technology is advancing and promises to enable space telescopes capable of directly detecting low surface brightness circumstellar debris disks as well as giant planets as close as in the habitable zones of their host stars. One mission c
Publikováno v:
SPIE Proceedings.
A small fraction of Kepler telescope exposures are rejected because of transient, excess background in the field. The patterns of illumination vary from broad streaks to diffuse patches, sometimes filling the focal plane. Examination of such images a
Autor:
Ruslan Belikov, Peter T. Zell, Olivier Guyon, Thomas P. Greene, Fred C. Witteborn, Dana H. Lynch, Eugene Pluzhnik
Publikováno v:
SPIE Proceedings.
Coronagraph technology is advancing and promises to enable direct imaging and spectral characterization of extrasolar Earth-like planets in the 2020 decade with a telescope as small as 1.5m. A small Explorer-sized telescope can also be launched in th