Other Planetary Systems - Colorado Mesa University
... • A Sun-like star is about a billion times brighter than the light reflected from its planets. • This is like being in San Francisco and trying to see a pinhead 15 meters from a grapefruit in Washington, D.C. © 2010 Pearson Education, Inc. ...
... • A Sun-like star is about a billion times brighter than the light reflected from its planets. • This is like being in San Francisco and trying to see a pinhead 15 meters from a grapefruit in Washington, D.C. © 2010 Pearson Education, Inc. ...
Constraining tidal dissipation in F-type main
... where γR 0.22 R is the gyration radius of the star (Siess et al. 2000), Qs its modified tidal quality factor, here assumed to be Qs = 106 , a the semimajor axis of the orbit, and G the gravitation constant (see Mardling & Lin 2002). Equation (2) is valid for circular orbits and when the spin axi ...
... where γR 0.22 R is the gyration radius of the star (Siess et al. 2000), Qs its modified tidal quality factor, here assumed to be Qs = 106 , a the semimajor axis of the orbit, and G the gravitation constant (see Mardling & Lin 2002). Equation (2) is valid for circular orbits and when the spin axi ...
Planet formation around stars of various masses: The snow line and
... with σ = σMMSN M⋆ /M⊙ for several different stellar masses over time for irradiation only, and for accretion + irradiation. We locate the snow line where Tmid = 170 K. More detailed derivations of this temperature (e.g. Podolak & Zucker 2004; Lecar et al. 2006) do not change the snow line distance s ...
... with σ = σMMSN M⋆ /M⊙ for several different stellar masses over time for irradiation only, and for accretion + irradiation. We locate the snow line where Tmid = 170 K. More detailed derivations of this temperature (e.g. Podolak & Zucker 2004; Lecar et al. 2006) do not change the snow line distance s ...
Superstars of Astronomy: Debra Fischer transcript
... Well, I think it was probably the first astronomy class that I took when I was in college. It was sort of unsettling. I remember feeling how insignificant it seemed that the Earth was in the context of the entire, well, galaxy and then the entire universe beyond that. So the scope of things was almo ...
... Well, I think it was probably the first astronomy class that I took when I was in college. It was sort of unsettling. I remember feeling how insignificant it seemed that the Earth was in the context of the entire, well, galaxy and then the entire universe beyond that. So the scope of things was almo ...
Dynamics of small bodies in planetary systems
... comets are confined to relatively narrow rings known as the asteroid belt and the Kuiper belt (see chapters by Nakamura and Jewitt). These belts are the source of the majority of the smaller objects seen in the solar system, since such objects are inevitably created in collisions between objects wit ...
... comets are confined to relatively narrow rings known as the asteroid belt and the Kuiper belt (see chapters by Nakamura and Jewitt). These belts are the source of the majority of the smaller objects seen in the solar system, since such objects are inevitably created in collisions between objects wit ...
A STEP - Observatoire de la Côte d`Azur
... 2. The photometry of transits Since the photometric detection of the transit of HD209458b in 1999, more than two dozen photometric searches for surveys have been going on. On paper, the procedure seems trivial enough: monitoring a few thousand stars for 20-30 nights would lead to the detection of se ...
... 2. The photometry of transits Since the photometric detection of the transit of HD209458b in 1999, more than two dozen photometric searches for surveys have been going on. On paper, the procedure seems trivial enough: monitoring a few thousand stars for 20-30 nights would lead to the detection of se ...
Life Beyond Earth Exhibition
... How to scientists know? What are they looking for? Informal Learning Solutions and its subcontractor, Audience Viewpoints Consulting, conducted summative evaluation in 2013 of the Life Beyond Earth Exhibit. Audience Viewpoints was responsible for evaluating student response to the exhibit, with a ta ...
... How to scientists know? What are they looking for? Informal Learning Solutions and its subcontractor, Audience Viewpoints Consulting, conducted summative evaluation in 2013 of the Life Beyond Earth Exhibit. Audience Viewpoints was responsible for evaluating student response to the exhibit, with a ta ...
WORD - Astrophysics
... essential questions remain for which the collecting area and angular resolution of an extremely large optical/infrared telescope will prove decisive. Many of these questions deal with the earliest and the latest stages of stellar evolution, plagued by significant unknowns. Determining the entire ste ...
... essential questions remain for which the collecting area and angular resolution of an extremely large optical/infrared telescope will prove decisive. Many of these questions deal with the earliest and the latest stages of stellar evolution, plagued by significant unknowns. Determining the entire ste ...
Kepler423b: a half-Jupiter mass planet transiting a very old solar
... high-precision radial velocity measurements taken with the FIES spectrograph at the Nordic Optical Telescope. We simultaneously modelled the photometric and spectroscopic data-sets using Bayesian approach coupled with Markov chain Monte Carlo sampling. We found that the Kepler pre-search data condit ...
... high-precision radial velocity measurements taken with the FIES spectrograph at the Nordic Optical Telescope. We simultaneously modelled the photometric and spectroscopic data-sets using Bayesian approach coupled with Markov chain Monte Carlo sampling. We found that the Kepler pre-search data condit ...
Three newly discovered sub-Jupiter-mass planets: WASP
... 2004; Huélamo et al. 2008). Transit surveys are not affected by this ambiguity as stellar activity does not produce transit-like features in light curves. The separation of the RV contributions due to reflex motion from those due to activity can prove simple or unnecessary in the case of short peri ...
... 2004; Huélamo et al. 2008). Transit surveys are not affected by this ambiguity as stellar activity does not produce transit-like features in light curves. The separation of the RV contributions due to reflex motion from those due to activity can prove simple or unnecessary in the case of short peri ...
