Zobrazeno 1 - 10
of 57
pro vyhledávání: '"UNWIN, STEPHEN C."'
Autor:
Hamden, Erika, Schiminovich, David, Nikzad, Shouleh, Turner, Neal J., Burkhart, Blakesley, Haworth, Thomas J., Hoadley, Keri, Kim, Jinyoung Serena, Bialyh, Shmuel, Bryden, Geoff, Chung, Haeun, Imara, Nia, Kennicutt, Rob, Pineda, Jorge, Konga, Shuo, Hasegawa, Yasuhiro, Pascucci, Ilaria, Godard, Benjamin, Krumholz, Mark, Lee, Min-Young, Seifried, Daniel, Sternberg, Amiel, Walch, Stefanie, Smith, Miles, Unwin, Stephen C., Luthman, Elizabeth, Kiessling, Alina, McGuire, James P., Rais-Zadeh, Mina, Hoenk, Michael, Pavlak, Thomas, Vargas, Carlos, Kim, Daewook
We present Hyperion, a mission concept recently proposed to the December 2021 NASA Medium Explorer announcement of opportunity. Hyperion explores the formation and destruction of molecular clouds and planet-forming disks in nearby star-forming region
Externí odkaz:
http://arxiv.org/abs/2212.06869
Autor:
Gaudi, B. Scott, Agol, Eric, Apai, Daniel, Bendek, Eduardo, Boss, Alan, Breckinridge, James B., Ciardi, David R., Cowan, Nicolas B., Danchi, William C., Domagal-Goldman, Shawn, Fortney, Jonathan J., Greene, Thomas P., Kaltenegger, Lisa, Kasting, James F., Leisawitz, David T., Leger, Alain, Lille, Charles F., Lisman, Douglas P., Lo, Amy S., Malbet, Fabian, Mandell, Avi M., Meadows, Victoria S., Mennesson, Bertrand, Nemati, Bijan, Plavchan, Peter P., Rinehart, Stephen A., Roberge, Aki, Serabyn, Eugene, Shaklan, Stuart B., Shao, Michael, Stapelfeldt, Karl R., Stark, Christopher C., Swain, Mark, Taylor, Stuart F., Turnbull, Margaret C., Turner, Neal J., Turyshev, Slava G., Unwin, Stephen C., Walkowicz, Lucianne M.
This is a joint summary of the reports from the three Astrophysics Program Analysis Groups (PAGs) in response to the "Planning for the 2020 Decadal Survey" charge given by the Astrophysics Division Director Paul Hertz. This joint executive summary co
Externí odkaz:
http://arxiv.org/abs/1601.00008
This paper develops a general observing strategy for missions performing all-sky surveys, where a single spacecraft maps the celestial sphere subject to realistic constraints. The strategy is flexible such that targeted observations and variable cove
Externí odkaz:
http://arxiv.org/abs/1412.3142
Autor:
Makarov, Valeri V., Unwin, Stephen C.
We present analysis of precision radial velocities (RV) of 1134 mostly red giant stars in the southern sky, selected as candidate astrometric grid objects for the Space Interferometry Mission (SIM). Only a few (typically, 2 or 3) spectroscopic observ
Externí odkaz:
http://arxiv.org/abs/1410.7943
Publikováno v:
2014, ApJ, 785, 60
We have used photometry from the Kepler satellite to characterize the variability of four radio-loud active galactic nuclei (AGN) on timescales from years to minutes. The Kepler satellite produced nearly continuous high precision data sets which prov
Externí odkaz:
http://arxiv.org/abs/1311.4838
Autor:
Wehrle, Ann E., Wiita, Paul J., Unwin, Stephen C., Di Lorenzo, Paolo, Revalski, Mitchell, Silano, Daniel, Sprague, Dan
We have used Kepler photometry to characterize variability in four radio-loud active galactic nuclei (three quasars and one object tentatively identified as a Seyfert 1.5 galaxy) on timescales from minutes to months, comparable to the light crossing
Externí odkaz:
http://arxiv.org/abs/1303.1147
Autor:
Shao, Michael, Marcy, Geoff, Catanzarite, Joseph H., Edberg, Stephen J., Leger, Alain, Malbet, Fabien, Queloz, Didier, Muterspaugh, Matthew W., Beichman, Charles, Fischer, Debra A., Ford, Eric, Olling, Robert, Kulkarni, Shrinivas, Unwin, Stephen C., Traub, Wesley
Astrometry can detect rocky planets in a broad range of masses and orbital distances and measure their masses and three-dimensional orbital parameters, including eccentricity and inclination, to provide the properties of terrestrial planets. The mass
Externí odkaz:
http://arxiv.org/abs/0904.0965
Autor:
Unwin, Stephen C., Shao, Michael, Tanner, Angelle M., Allen, Ronald J., Beichman, Charles A., Boboltz, David, Catanzarite, Joseph H., Chaboyer, Brian C., Ciardi, David R., Edberg, Stephen J., Fey, Alan L., Fischer, Debra A., Gelino, Christopher R., Gould, Andrew P., Grillmair, Carl, Henry, Todd J., Johnston, Kathryn V., Johnston, Kenneth J., Jones, Dayton L., Kulkarni, Shrinivas R., Law, Nicholas M., Majewski, Steven R., Makarov, Valeri V., Marcy, Geoffrey W., Meier, David L., Olling, Rob P., Pan, Xiaopei, Patterson, Richard J., Pitesky, Jo Eliza, Quirrenbach, Andreas, Shaklan, Stuart B., Shaya, Edward J., Strigari, Louis E., Tomsick, John A., Wehrle, Ann E., Worthey, Guy
Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument that delivers parallaxes at about 4 microarcsec on tar
Externí odkaz:
http://arxiv.org/abs/0708.3953
Autor:
Leisawitz, David, Armstrong, Tom, Bender, Chad, Benford, Dominic, Calzetti, Daniella, Carpenter, John, Danchi, William C., Fich, Michel, Fixsen, Dale, Gezari, Daniel Y., Griffin, Matt, Harwit, Martin, Kogut, Alan J., Langer, William D., Lawrence, Charles, Lester, Dan, Mundy, Lee G., Najita, Joan, Neufeld, David, Pilbratt, Goran, Rinehart, Stephen, Roberge, Aki, Serabyn, Eugene, Shenoy, Sachindev, Shibai, Hiroshi, Silverberg, Robert, Staguhn, Johannes, Swain, Mark R., Unwin, Stephen C., Wright, Edward, Yorke, Harold W.
By providing sensitive sub-arcsecond images and integral field spectroscopy in the 25 - 400 micron wavelength range, a far-IR interferometer will revolutionize our understanding of planetary system formation, reveal otherwise-undetectable planets thr
Externí odkaz:
http://arxiv.org/abs/0707.0873
Autor:
Piner, B. Glenn, Unwin, Stephen C., Wehrle, Ann E., Zook, Alma C., Urry, C. Megan, Gilmore, Diane M.
We have calculated inverse-Compton Doppler factors for 3C 279 using the collection of VLBI data recently published by us, and the collection of multiwavelength spectra recently published by Hartman et al. From the Doppler factor and superluminal appa
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301333