Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Koerner, David"'
Rendering highly scattering participating media using brute force path tracing is a challenge. The diffusion approximation reduces the problem to solving a simple linear partial differential equation. Flux-limited diffusion introduces non-linearities
Externí odkaz:
http://arxiv.org/abs/1807.00410
Autor:
Lurie, John C., Henry, Todd J., Jao, Wei-Chun, Quinn, Samuel N., Winters, Jennifer G., Ianna, Philip A., Koerner, David W., Riedel, Adric R., Subasavage, John P.
Astrometric measurements are presented for seven nearby stars with previously detected planets: six M dwarfs (GJ 317, GJ 667C, GJ 581, GJ 849, GJ 876, and GJ 1214) and one K dwarf (BD $-$10 3166). Measurements are also presented for six additional ne
Externí odkaz:
http://arxiv.org/abs/1407.4820
For the rendering of multiple scattering effects in participating media, methods based on the diffusion approximation are an extremely efficient alternative to Monte Carlo path tracing. However, in sufficiently transparent regions, classical diffusio
Externí odkaz:
http://arxiv.org/abs/1403.8105
Publikováno v:
The kinematics of circumstellar disks around T Tauri stars [electronic thesis]
Thesis (Ph. D.). UM #95-17,811.
Includes bibliographical references.
Includes bibliographical references.
Externí odkaz:
http://resolver.caltech.edu/CaltechETD:etd-10312007-162008
Autor:
Koerner, David
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Aperture synthesis images of molecular gas around the T Tauri stars, GM Aurigae, RY Tauri, DL Tauri, DO Tauri, and AS 209 are interpret
Autor:
Wahhaj, Zahed, Cieza, Lucas, Stapelfeldt, Karl R., Padgett, Deborah L., Koerner, David W., Case, April, Keller, James R., Merín, Bruno, Evans III, Neal J., Harvey, Paul, Sargent, Anneila, van Dishoeck, Ewine F., Allen, Lori, Blake, Geoff, Brooke, Tim, Chapman, Nicholas, Mundy, Lee, Myers, Philip C.
We present 3.6 to 70 {\mu}m Spitzer photometry of 154 weak-line T Tauri stars (WTTS) in the Chamaeleon, Lupus, Ophiuchus and Taurus star formation regions, all of which are within 200 pc of the Sun. For a comparative study, we also include 33 classic
Externí odkaz:
http://arxiv.org/abs/1009.4460
Autor:
Evans II, Neal J., Dunham, Michael M., Jørgensen, Jes K., Enoch, Melissa L., Merín, Bruno, van Dishoeck, Ewine F., Alcalá, Juan M., Myers, Philip C., Stapelfeldt, Karl R., Huard, Tracy L., Allen, Lori E., Harvey, Paul M., van Kempen, Tim, Blake, Geoffrey A., Koerner, David W., Mundy, Lee G., Padgett, Deborah L., Sargent, Anneila I.
Publikováno v:
Astrophys.J.Suppl.181:321-350,2009
(Abridged) The c2d Spitzer Legacy project obtained images and photometry with both IRAC and MIPS instruments for five large, nearby molecular clouds. This paper combines information drawn from studies of individual clouds into a combined and updated
Externí odkaz:
http://arxiv.org/abs/0811.1059
Autor:
Padgett, Deborah L., Rebull, Luisa M., Stapelfeldt, Karl R., Chapman, Nicholas L., Lai, Shih-Ping, Mundy, Lee G., Evans II, Neal J., Brooke, Timothy Y., Cieza, Lucas A., Spiesman, William J., Noriega-Crespo, Alberto, McCabe, Caer-Eve, Allen, Lori E., Blake, Geoffrey A., Harvey, Paul M., Huard, Tracy L., Jorgensen, Jes K., Koerner, David W., Myers, Philip C., Sargent, Anneila I., Teuben, Peter, van Dishoeck, Ewine F., Wahhaj, Zahed, Young, Kaisa E.
We present maps of 14.4 deg^2 of the Ophiuchus dark clouds observed by the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). These high quality maps depict both numerous point sources as well as extended dust emission within th
Externí odkaz:
http://arxiv.org/abs/0709.3492