70 research outputs found

    First radial velocity results from the MINiature Exoplanet Radial Velocity Array (MINERVA)

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    The MINiature Exoplanet Radial Velocity Array (MINERVA) is a dedicated observatory of four 0.7m robotic telescopes fiber-fed to a KiwiSpec spectrograph. The MINERVA mission is to discover super-Earths in the habitable zones of nearby stars. This can be accomplished with MINERVA's unique combination of high precision and high cadence over long time periods. In this work, we detail changes to the MINERVA facility that have occurred since our previous paper. We then describe MINERVA's robotic control software, the process by which we perform 1D spectral extraction, and our forward modeling Doppler pipeline. In the process of improving our forward modeling procedure, we found that our spectrograph's intrinsic instrumental profile is stable for at least nine months. Because of that, we characterized our instrumental profile with a time-independent, cubic spline function based on the profile in the cross dispersion direction, with which we achieved a radial velocity precision similar to using a conventional "sum-of-Gaussians" instrumental profile: 1.8 m s1^{-1} over 1.5 months on the RV standard star HD 122064. Therefore, we conclude that the instrumental profile need not be perfectly accurate as long as it is stable. In addition, we observed 51 Peg and our results are consistent with the literature, confirming our spectrograph and Doppler pipeline are producing accurate and precise radial velocities.Comment: 22 pages, 9 figures, submitted to PASP, Peer-Reviewed and Accepte

    Cause of Death and Predictors of All-Cause Mortality in Anticoagulated Patients With Nonvalvular Atrial Fibrillation : Data From ROCKET AF

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    M. Kaste on työryhmän ROCKET AF Steering Comm jäsen.Background-Atrial fibrillation is associated with higher mortality. Identification of causes of death and contemporary risk factors for all-cause mortality may guide interventions. Methods and Results-In the Rivaroxaban Once Daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation (ROCKET AF) study, patients with nonvalvular atrial fibrillation were randomized to rivaroxaban or dose-adjusted warfarin. Cox proportional hazards regression with backward elimination identified factors at randomization that were independently associated with all-cause mortality in the 14 171 participants in the intention-to-treat population. The median age was 73 years, and the mean CHADS(2) score was 3.5. Over 1.9 years of median follow-up, 1214 (8.6%) patients died. Kaplan-Meier mortality rates were 4.2% at 1 year and 8.9% at 2 years. The majority of classified deaths (1081) were cardiovascular (72%), whereas only 6% were nonhemorrhagic stroke or systemic embolism. No significant difference in all-cause mortality was observed between the rivaroxaban and warfarin arms (P=0.15). Heart failure (hazard ratio 1.51, 95% CI 1.33-1.70, P= 75 years (hazard ratio 1.69, 95% CI 1.51-1.90, P Conclusions-In a large population of patients anticoagulated for nonvalvular atrial fibrillation, approximate to 7 in 10 deaths were cardiovascular, whereasPeer reviewe

    Inventory of county records, Presidio County courthouse, Marfa, Texas

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    Inventory of records of Presidio County housed in the Presidio County courthouse in Marfa. Begins with an introduction and explanation of the roles of various county government offices. Describes the records of the County Clerk: As Secretary for Commissioners Court, County Clerk: As Reporter for County Court, District Clerk, Tax Assessor-Collector, Justice of the Peace, Sheriff, County Judge, County Treasurer, and County Surveyor

    Inventory of county records, Matagorda County Courthouse, Bay City, Texas

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    Inventory of records of Matagorda County housed in the MatagordaCounty Courthouse in Bay City, Texas. Begins with an introduction and explanation of the roles of various county government offices. Describes the records of the Commissioners Court, County Judge, County Clerk, County Court, District Clerk, Justice of the Peace, Sheriff, Tax Assessor-Collector, Treasurer, and Auditor. Also provides a list of Matagorda County records and an index

    Inventory of county records, Jackson County Courthouse, Edna, Texas

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    Inventory of records of Jackson County housed in the Jackson County Courthouse in Edna, Texas. Begins with an introduction and explanation of the roles of various county government offices. Describes the records of the Commissioners Court, County Judge, County Clerk, County Court, County Attorney, District Clerk, Justice of the Peace, Sheriff, Tax Assessor-Collector, Treasurer, and Auditor. Also provides a list of Jackson County records and an index

    Inventory of county records, Schleicher County Courthouse, Eldorado, Texas

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    Inventory of records of Schleicher County housed in the Schleicher County Courthouse in El Dorado, Texas. Begins with an introduction and explanation of the roles of various county government offices. Describes the records of the Commissioners Court, County Judge, County Clerk, County Court, District Clerk, Justice of the Peace, Sheriff, Tax Assessor-Collector, County Treasurer, Auditor, County School Superintendent, and Surveyor. Also provides a list of Schleicher County records and an index

    Inventory of county records, Milam County Courthouse, Cameron, Texas

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    Inventory of records of Milam County housed in the Milam County Courthouse in Cameron, Texas. Begins with an introduction and explanation of the roles of various county government offices. Describes the records of the County Clerk: as Secretary for Commissioners Court, County Clerk: as Recorder, County Clerk: as Reporter for County Court, District Clerk, Tax Assessor-Collector, Justice of the Peace, Sheriff, County Judge, County Treasurer, County Auditor, and County Attorney. Also provides an index

    Inventory of county records, Sterling County Courthouse, Sterling City, Texas

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    Inventory of records of Sterling County housed in the Sterling County Courthouse in Sterling City, Texas. Begins with an introduction and explanation of the roles of various county government offices. Describes the records of the Commissioner's Court, County Clerk, County Court, District Clerk, Justice of the Peace, Sheriff, Tax Assessor-Collector, Treasurer, and County School Superintendent. Also provides a list of Sterling County records and an index
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