Search Results - "Moorhead, Althea V."

Deconvoluting measurement uncertainty from the meteor speed distribution by Moorhead, Althea V.

“…Debiasing the velocity distribution of meteors observed by the Canadian Meteor Orbit Radar (CMOR) yields a distribution with large numbers of slow meteors. The…”
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A Reference Meteor Magnitude for Intercomparable Fluxes by Moorhead, Althea V., Vida, Denis, Brown, Peter G., Campbell-Brown, Margaret D.

“…The rate at which meteors pass through Earth’s atmosphere has been measured or estimated many times over; existing flux measurements span at least 12…”
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Kepler-9: A System of Multiple Planets Transiting a Sun-Like Star, Confirmed by Timing Variations by Holman, Matthew J, Fabrycky, Daniel C, Ragozzine, Darin, Ford, Eric B, Steffen, Jason H, Welsh, William F, Lissauer, Jack J, Latham, David W, Marcy, Geoffrey W, Walkowicz, Lucianne M, Batalha, Natalie M, Jenkins, Jon M, Rowe, Jason F, Cochran, William D, Fressin, Francois, Torres, Guillermo, Buchhave, Lars A, Sasselov, Dimitar D, Borucki, William J, Koch, David G, Basri, Gibor, Brown, Timothy M, Caldwell, Douglas A, Charbonneau, David, Dunham, Edward W, Gautier, Thomas N. III, Geary, John C, Gilliland, Ronald L, Haas, Michael R, Howell, Steve B, Ciardi, David R, Endl, Michael, Fischer, Debra, Fürész, Gábor, Hartman, Joel D, Isaacson, Howard, Johnson, John A, MacQueen, Phillip J, Moorhead, Althea V, Morehead, Robert C, Orosz, Jerome A

“…The Kepler spacecraft is monitoring more than 150,000 stars for evidence of planets transiting those stars. We report the detection of two Saturn-size planets…”
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A two-population sporadic meteoroid bulk density distribution and its implications for environment models by Moorhead, Althea V., Blaauw, Rhiannon C., Moser, Danielle E., Campbell-Brown, Margaret D., Brown, Peter G., Cooke, William J.

“…Abstract The bulk density of a meteoroid affects its dynamics in space, its ablation in the atmosphere, and the damage it does to spacecraft and lunar or…”
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Performance of D -criteria in isolating meteor showers from the sporadic background in an optical data set by Moorhead, Althea V

“…Separating meteor showers from the sporadic meteor background is critical for the study of both showers and the sporadic complex. The linkage of meteors to…”
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Eccentricity evolution of giant planet orbits due to circumstellar disk torques by Moorhead, Althea V., Adams, Fred C.

“…The extrasolar planets discovered to date possess unexpected orbital elements. Most orbit their host stars with larger eccentricities and smaller semi-major…”
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Meteor shower radiant dispersions in Global Meteor Network data by Moorhead, Althea V, Clements, Tiffany, Vida, Denis

“…ABSTRACT Meteor showers occur when streams of meteoroids originating from a common source intersect the Earth. There will be small dissimilarities between the…”
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Is LaTeX use correlated with the number of equations in a manuscript? by Moorhead, Althea V.

“…Astronomy papers are most frequently composed and submitted in either Microsoft Word or LaTeX format. While most journals accept submissions in Word format…”
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Realistic gravitational focusing of meteoroid streams by Moorhead, Althea V, Clements, Tiffany D, Vida, Denis

“…ABSTRACT The number density and flux of a meteoroid stream is enhanced near a massive body due to the phenomenon known as gravitational focusing. The greatest…”
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Iron Rain: measuring the occurrence rate and origin of small iron meteoroids at Earth by Mills, Tristan, Brown, P G, Mazur, M J, Vida, D, Gural, Peter S, Moorhead, Althea V

“…ABSTRACT We report results of a 4-yr survey using Electron Multiplied Charged Coupled Device cameras recording 34 761 two-station video meteor events complete…”
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TRANSIT TIMING OBSERVATIONS FROM KEPLER. IV. CONFIRMATION OF FOUR MULTIPLE-PLANET SYSTEMS BY SIMPLE PHYSICAL MODELS by FABRYCKY, Daniel C, FORD, Eric B, CHRISTIANSEN, Jessie L, CIARDI, David R, COCHRAN, William D, ENDL, Michael, FANELLI, Michael N, FISCHER, Debra, FRESSIN, Francois, GEARY, John, HAAS, Michael R, HALL, Jennifer R, STEFFEN, Jason H, HOLMAN, Matthew J, JENKINS, Jon M, KOCH, David G, LATHAM, David W, JIE LI, LISSAUER, Jack J, LUCAS, Philip, MARCY, Geoffrey W, MAZEH, Tsevi, MCCAULIFF, Sean, ROWE, Jason F, QUINN, Samuel, RAGOZZINE, Darin, SASSELOV, Dimitar, SHPORER, Avi, CARTER, Joshua A, MOORHEAD, Althea V, BATALHA, Natalie M, BORUCKI, William J, BRYSON, Steve, BUCHHAVE, Lars A

“…Eighty planetary systems of two or more planets are known to orbit stars other than the Sun. For most, the data can be sufficiently explained by…”
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The meteoroid fluence at Mars due to Comet C/2013 A1 (Siding Spring) by Moorhead, Althea V., Wiegert, Paul A., Cooke, William J.

“…•We present an analytic model of the dust component of cometary comae.•Our model successfully reproduces data from several spacecraft missions to within an…”
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Transit timing observations from Kepler - III. Confirmation of four multiple planet systems by a Fourier-domain study of anticorrelated transit timing variations by Steffen, Jason H., Fabrycky, Daniel C., Ford, Eric B., Carter, Joshua A., Désert, Jean-Michel, Fressin, Francois, Holman, Matthew J., Lissauer, Jack J., Moorhead, Althea V., Rowe, Jason F., Ragozzine, Darin, Welsh, William F., Batalha, Natalie M., Borucki, William J., Buchhave, Lars A., Bryson, Steve, Caldwell, Douglas A., Charbonneau, David, Ciardi, David R., Cochran, William D., Endl, Michael, Everett, Mark E., Gautier, Thomas N., Gilliland, Ron L., Girouard, Forrest R., Jenkins, Jon M., Horch, Elliott, Howell, Steve B., Isaacson, Howard, Klaus, Todd C., Koch, David G., Latham, David W., Li, Jie, Lucas, Philip, MacQueen, Phillip J., Marcy, Geoffrey W., McCauliff, Sean, Middour, Christopher K., Morris, Robert L., Mullally, Fergal R., Quinn, Samuel N., Quintana, Elisa V., Shporer, Avi, Still, Martin, Tenenbaum, Peter, Thompson, Susan E., Twicken, Joseph D., Van Cleve, Jeffery

“…We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This method involves a Fourier-domain…”
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Fully correcting the meteor speed distribution for radar observing biases by Moorhead, Althea V., Brown, Peter G., Campbell-Brown, Margaret D., Heynen, Denis, Cooke, William J.

“…Meteor radars such as the Canadian Meteor Orbit Radar (CMOR) have the ability to detect millions of meteors, making it possible to study the meteoroid…”
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How Long-lived Grains Dominate the Shape of the Zodiacal Cloud by Pokorný, Petr, Moorhead, Althea V., Kuchner, Marc J., Szalay, Jamey R., Malaspina, David M.

“…Grain–grain collisions shape the three-dimensional size and velocity distribution of the inner Zodiacal Cloud and the impact rates of dust on inner planets,…”
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TRANSIT TIMING OBSERVATIONS FROM KEPLER. II. CONFIRMATION OF TWO MULTIPLANET SYSTEMS VIA A NON-PARAMETRIC CORRELATION ANALYSIS by FORD, Eric B, FABRYCKY, Daniel C, ROWE, Jason F, WELSH, William F, ALLEN, Christopher, BATALHA, Natalie M, BORUCKI, William J, BRYSON, Stephen T, BUCHHAVE, Laps A, BURKE, Christopher J, CALDWELL, Douglas A, CHARBONNEAU, David, STEFFEN, Jason H, CLARKE, Bruce D, COCHRAN, William D, DESERT, Jean-Michel, ENDL, Michael, EVERETT, Mark E, FISCHER, Debra A, GAUTIER, Thomas N, GILLILAND, Ron L, JENKINS, Jon M, HAAS, Michael R, CARTER, Joshua A, HORCH, Elliott, HOWELL, Steve B, IBRAHIM, Khadeejah A, ISAACSON, Howard, KOCH, David G, LATHAM, David W, JIE LI, LUCAS, Philip, MACQUEEN, Phillip J, MARCY, Geoffrey W, FRESSIN, Francois, MCCAULLFF, Sean, MULLALLY, Fergal R, QUINN, Samuel N, QUINTANA, Elisa, SHPORER, Avi, STILL, Martin, TENENBAUM, Peter, THOMPSON, Susan E, TORRES, Guillermo, TWICKEN, Joseph D, HOLMAN, Matthew J, WOHLER, Bill, LISSAUER, Jack J, MOORHEAD, Althea V, MOREHEAD, Robert C, RAGOZZINE, Darin

“…We present a new method for confirming transiting planets based on the combination of transit timing variations (TTVs) and dynamical stability. Correlated TTVs…”
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Five Kepler Target Stars That Show Multiple Transiting Exoplanet Candidates by Steffen, Jason H, Batalha, Natalie M, Borucki, William J, Buchhave, Lars A, Caldwell, Douglas A, Cochran, William D, Endl, Michael, Fabrycky, Daniel C, Fressin, François, Ford, Eric B, Fortney, Jonathan J, Haas, Michael J, Holman, Matthew J, Howell, Steve B, Isaacson, Howard, Jenkins, Jon M, Koch, David, Latham, David W, Lissauer, Jack J, Moorhead, Althea V, Morehead, Robert C, Marcy, Geoffrey, MacQueen, Phillip J, Quinn, Samuel N, Ragozzine, Darin, Rowe, Jason F, Sasselov, Dimitar D, Seager, Sara, Torres, Guillermo, Welsh, William F

“…We present and discuss five candidate exoplanetary systems identified with the Kepler spacecraft. These five systems show transits from multiple exoplanet…”
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Giant planet migration through the action of disk torques and planet–planet scattering by Moorhead, Althea V., Adams, Fred C.

“…This paper presents a parametric study of giant planet migration through the combined action of disk torques and planet–planet scattering. The torques exerted…”
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Forbidden mass ranges for shower meteoroids by Moorhead, Althea V.

“…Burns et al. (1979) use the parameter β to describe the ratio of radiation pressure to gravity experienced by a small particle in the solar system. The central…”
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A library of meteoroid environments encountered by spacecraft in the inner solar system by Moorhead, Althea V., Milbrandt, Katie, Kingery, Aaron

“…NASA’s Meteoroid Engineering Model (MEM) is designed to provide aerospace engineers with an accurate description of potentially hazardous meteoroids. It…”
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