Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Roe, P. G."'
Autor:
Holler, Bryan J., Young, Leslie A., Buie, Marc W., Grundy, William M., Lyke, James E., Young, Eliot F., Roe, Henry G.
In this work we investigated the longitudinal (zonal) variability of H$_2$O and ammonia (NH$_3$) hydrate ices on the surface of Charon through analysis of the 1.65 $\mu$m and 2.21 $\mu$m absorption features, respectively. Near-infrared spectra presen
Externí odkaz:
http://arxiv.org/abs/1606.05695
Autor:
Grundy, W. M., Porter, S. B., Benecchi, S. D., Roe, H. G., Noll, K. S., Trujillo, C. A., Thirouin, A., Stansberry, J. A., Barker, E., Levison, H. F.
From observations by the Hubble Space Telescope, Keck II Telescope, and Gemini North Telescope, we have determined the mutual orbit of the large transneptunian object (174567) Varda and its satellite Ilmar\"e. These two objects orbit one another in a
Externí odkaz:
http://arxiv.org/abs/1505.00510
Autor:
Grundy, W. M., Noll, K. S., Nimmo, F., Roe, H. G., Buie, M. W., Porter, S. B., Benecchi, S. D., Stephens, D. C., Levison, H. F., Stansberry, J. A.
We present three improved and five new mutual orbits of transneptunian binary systems (58534) Logos-Zoe, (66652) Borasisi-Pabu, (88611) Teharonhiawako-Sawiskera, (123509) 2000 WK183, (149780) Altjira, 2001 QY297, 2003 QW111, and 2003 QY90 based on Hu
Externí odkaz:
http://arxiv.org/abs/1103.2751
Autor:
Brown, M. E., Schaller, E. L., Roe, H. G., CHen, C., Roberts, J., Brown, R. H., Baines, K. H., Clark, R. N.
Images from instruments on Cassini as well as from telescopes on the ground reveal the presence of sporadic small-scale cloud activity in the cold late-winter north polar of Saturn's large moon Titan. These clouds lie underneath the previously discov
Externí odkaz:
http://arxiv.org/abs/0809.1841
We report a multi-week sequence of B-band photometric measurements of the dwarf planet Eris using the {\it Swift} satellite. The use of an observatory in low-Earth orbit provides better temporal sampling than is available with a ground-based telescop
Externí odkaz:
http://arxiv.org/abs/0808.4130
Publikováno v:
Astrophys.J. 643 (2006) L61-L64
We have used the Hubble Space Telescope to directly measure the angular size of the large Kuiper belt object 2003 UB313. By carefully calibrating the point spread function of a nearby field star, we measure the size of 2003 UB313 to be 34.3$\pm$1.4 m
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604245
Publikováno v:
Astrophys.J.597:L65-L68,2003
We present the first observations of propane (C$_3$H$_8$) on Titan that unambiguously resolve propane features from other numerous stratospheric emissions. This is accomplished using a $R=\lambda/\delta\lambda\approx10^5$ spectrometer (TEXES) to obse
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309653
Autor:
Roe, Henry G.
Many adaptive optics systems operate by measuring the distortion of the wavefront in one wavelength range and performing the scientific observations in a second, different wavelength range. One common technique is to measure wavefront distortions at
Externí odkaz:
http://arxiv.org/abs/astro-ph/0201273
Autor:
Roe, Henry G., de Pater, Imke, Macintosh, Bruce A., Gibbard, Seran G., Max, Claire E., McKay, Chris P.
Using adaptive optics on the W.M. Keck II telescope we imaged Titan several times during 1999 to 2001 in narrowband near-infrared filters selected to probe Titan's stratosphere and upper troposphere. We observed a bright feature around the south pole
Externí odkaz:
http://arxiv.org/abs/astro-ph/0201231
Autor:
Roe, Henry G., Graham, James R., McLean, Ian S., de Pater, Imke, Becklin, E. E., Figer, Donald F., Gilbert, Andrea M., Larkin, James E., Levenson, N. A., Teplitz, Harry I., Wilcox, Mavourneen K.
We present 2.03-2.30 micron near-infrared spectroscopy of Neptune taken 1999 June 2 (UT) with the W.M. Keck Observatory's near-infrared spectrometer (NIRSPEC) during the commissioning of the instrument. The spectrum is dominated by a bright cloud fea
Externí odkaz:
http://arxiv.org/abs/astro-ph/0107361