Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Olling, Rob P."'
Autor:
Shaya, Ed, Olling, Rob
We develop Bayesian statistical methods for discovering and assigning probabilities to non-random (e.g., physical) stellar companions. These companions are either presently bound or were previously bound. The probabilities depend on similarities in c
Externí odkaz:
http://arxiv.org/abs/1007.0425
Stellar mass plays a central role in our understanding of star formation and aging. Stellar astronomy is largely based on two maps, both dependent on mass, either indirectly or directly: the Hertzprung-Russell Diagram (HRD) and the Mass-Luminosity Re
Externí odkaz:
http://arxiv.org/abs/0903.4154
Autor:
Olling, Rob P., Allen, Ron J., Anderson, Jay, Chaboyer, Brian C., Freedman, Wendy, Guhathakurta, Puragra, Johnston, Kenneth, Kulkarni, Shri, Lepine, Sebastien, Makarov, Valeri V., Mamajek, Eric E., Quillen, Alice C., Sahu, Kailash S., Sarajedini, Ata, Shaya, Ed J., Terndrup, Donald, Young, Patrick A.
Abridged: The golden age of astrophysics is upon us with both grand discoveries (extra-solar planets, dark matter, dark energy) and precision cosmology. Fundamental understanding of the working of stars and galaxies is within reach, thanks to newly a
Externí odkaz:
http://arxiv.org/abs/0902.3197
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:
Olling, Rob P.
We propose a MIDEX-class space mission with the goal to find and characterize roughly 10,000 transiting planets. When transits occur, a much more detailed characterization of the planet is possible and so a large data base of transiting planets will
Externí odkaz:
http://arxiv.org/abs/0704.3072
Autor:
Olling, Rob P.
The astrometric signature imposed by a planet on its primary increases substantially towards longer periods (proportinal to P^2/3), so that long-period planets can be more easily detected, in principle. For example, a one Solar-mass (M_Sun) star woul
Externí odkaz:
http://arxiv.org/abs/0704.3059
Autor:
Olling, Rob P.
Publikováno v:
Mon.Not.Roy.Astron.Soc.378:1385-1399,2007
We investigate how the uncertainty on the Hubble constant (H_0) affects the uncertainty in the Equation of State (EOS) of Dark Energy and the total density of the Universe (Omega_tot). We use the approximate relations between the cosmological paramet
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607607
Autor:
Olling, Rob P.
I analyze several catalogs of known visual and spectroscopic binaries and conclude that a large number of binaries is missing in current catalogs. Samples of the best studied (nearby and bright) stars indicate that the true binary fraction may be as
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505471
Autor:
Olling, Rob P., Dehnen, Walter
Publikováno v:
Astrophys.J. 599 (2003) 275-296
The Oort constants describe the local variations of the stellar streaming field. Classically, they are determined from stellar proper motions. We discuss problems arising in this procedure. A large, hitherto overlooked, source of systematic error ari
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301486
Three planned astrometry survey satellites, FAME, DIVA, and GAIA, all aim at observing magnitude-limited samples. We argue that substantial additional scientific opportunities are within the reach of these mission if they devote a modest fraction of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110628