Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16 A

Kepler-16 is an eccentric low-mass eclipsing binary with a circumbinary transiting planet. Here, we investigate the angular momentum of the primary star, based on Kepler photometry and Keck spectroscopy. The primary star’s rotation period is 35.1 ± 1.0 days, and its projected obliquity with respect to the stellar binary orbit is 1°.6 ± 2°.4. Therefore, the three largest sources of angular momentum—the stellar orbit, the planetary orbit, and the primary’s rotation—are all closely aligned. This finding supports a formation scenario involving accretion from a single disk. Alternatively, tides may have realigned the stars despite their relatively wide separation (0.2 AU), a hypothesis that is supported by the agreement between the measured rotation period and the “pseudosynchronous” period of tidal evolution theory. The rotation period, chromospheric activity level, and fractional light variations suggest a main-sequence age of 2–4 Gyr. Evolutionary models of low-mass stars can match the observed masses and radii of the primary and secondary stars to within about 3%

HAT-P-30b: A Transiting Hot Jupiter on a Highly Oblique Orbit

We report the discovery of HAT-P-30b, a transiting exoplanet orbiting the V = 10.419 dwarf star GSC 0208-00722. The planet has a period P = 2.810595 ± 0.000005 days, transit epoch Tc = 2455456.46561 ± 0.00037 (BJD), and transit duration 0.0887 ± 0.0015 days. The host star has a mass of 1.24 ± 0.04 M_⊙, radius of 1.21 ± 0.05 R_⊙, effective temperature of 6304 ± 88 K, and metallicity [Fe/H] = +0.13 ± 0.08. The planetary companion has a mass of 0.711 ± 0.028 M J and radius of 1.340 ± 0.065 R J yielding a mean density of 0.37 ± 0.05 g cm^(–3). We also present radial velocity measurements that were obtained throughout a transit that exhibit the Rossiter-McLaughlin effect. By modeling this effect, we measure an angle of λ = 73.°5 ± 9.°0 between the sky projections of the planet's orbit normal and the star's spin axis. HAT-P-30b represents another example of a close-in planet on a highly tilted orbit, and conforms to the previously noted pattern that tilted orbits are more common around stars with T_(eff*) ≳ 6250 K

Rules of Court

The purpose of this paper is neither to repeat nor to explain the rules of the Supreme Court of Montana, for they are freely available to everyone in printed form and are self-explanatory. My purpose is to suggest and consider some ideas which the general subject suggests, including some questions presented by the dual authority of judicial and legislative branches over court procedure, and finally to discuss the present court\u27s attitude toward its rules

Retirees Look Back on the Years

Professors Howard Leichter, Linda Olds and Kareen Sturgeon share memories of their years at Linfield

Montclair High School: A Multi-dimensional GIS Approach to Tactical Emergency Response

“This marks the fourth shooting incident at a U.S. school within a week -- the second at a college or university -- and serves as a stunning reminder that it is impossible to know when and where violence will occur.” (Knapp, 02/15/2008) This quote, referencing the 2008 shooting at Northern Illinois University, is a stark reminder that the school systems in the United States are soft targets for acts of violence. Although it is almost impossible to predict such tragic events, it is possible to prepare, react, and respond to these actions in a timely manner to reduce loss of life and property. Advances in technology, particularly in geographic information systems (GIS), have given first responders the ability to respond to these occurrences more rapidly and efficiently. The GIS application created in this project supports the needs of first responders to enhance preparation and response to emergencies, in this case at Montclair High School, Montclair, California. Utilizing a variety of geospatial tools and software applications, the system will provide emergency personnel with a unique application or system designed to support a more effective and efficient response

Concluding Remarks

Today\u27s symposium has demonstrated once again, the deep interest and optimism Montanans have for restoring the resource potential of the Clark Fork River. The registered attendance list numbers more than 150, including many from our neighboring States of Idaho and Washington. On behalf of the planning committee and sponsors of the symposium. I want to thank the attendees, participants and supporters for making this meeting a success

Junior leaders: their selection, training, and use in the Roxbury Neighborhood House, 1954-55

Thesis (M.S.)--Boston Universit

17-4 PH and 15-5 PH

17-4 PH and 15-5 PH are extremely useful and versatile precipitation-hardening stainless steels. Armco 17-4 PH is well suited for the magnetic particle inspection requirements of Aerospace Material Specification. Armco 15-5 PH and 17-4 PH are produced in billet, plate, bar, and wire. Also, 15-5 PH is able to meet the stringent mechanical properties required in the aerospace and nuclear industries. Both products are easy to heat treat and machine, making them very useful in many applications