PPT-Ups and downs in understanding stellar variability

Wrocław 20082013 Mid 1960ties Variability of Cepheids and RR L y r ae stars explained Radial pulsation hypothesis Ritter 1879 confirmed Shapley 1914 . of Sun-like stars. (“solar variability after dark”). Wes Lockwood, Lowell Observatory. Gregory Henry, TSU. Robotic photometry 1993-2014. Tennessee State Univ. telescopes at Fairborn Observatory. Lou Boyd, input. . atmospheres. a . very. . short. . introduction. Part I. Ewa Niemczura. Astronomical. . Institute. , . UWr. eniem@astro.uni.wroc.pl. Stellar. spectra. Stellar. spectra. One picture is worth 1000 words, but . INTO ONE BIG QUARRY?. NO WAY HOZAY!. Market for the end product . . . Size and quality of the resource . . . Existing or potential infrastructure + inputs . ??. Environmental impacts . Mark Morris. UCLA. ABSTRACT -- The . well-defined, massive disk of young stars orbiting within 0.5 pc of the Galactic black hole (GBH) is strongly tilted with respect to the Galactic plane. In the context of in situ formation mechanisms, this orientation is inherited from that of the gas disk that formed these stars on the order of 6 million years ago. The tilt can be understood by positing that clouds fall toward the GBH on near-zero angular momentum orbits and form dispersion rings as they self-intersect after . Rachel Whitfield. South Downs Futurescape . Community Engagement Officer. Futurescapes. Farmland, Wetland, Heathland, Woodland, Chalk Grassland.... Giving Nature a Home: . Your Landscape. Farmland. Wetland. young stars . with . LSST. Gregory J. Herczeg. KIAA. Star Formation: . ISM/Molecular Clouds . Pre-main sequence stellar evolution. (low-mass case). HD141569, . Clampin. et al.. Classical T . Tauri. Stars. Giuseppina. . Battaglia. Instituto. de . Astrofisica. de Canarias, Tenerife. Credit. : ESO/. H.H.Heyer. Credit. : ESO/L. . Calçada. Karachentsev. et al. 2014. Individual . Red . Giant Branch . stars. Soroush Sotoudeh. . (University of Minnesota). Daniel . Weisz. , Andrew Dolphin, Evan Skillman. 06/29/2015 – . STScI. Workshop on IMF. Outline. Introduction. Observations and data. IMF analysis and results. 1. /28. Important for transits (see next slides).. . Transit depth = [ . R. planet. (. λ. ,t. ) / . R. star. (. λ,t. ) ]. 2. Not so important for eclipses because the eclipse is a simple difference, and the stellar variability typically is slower than the eclipse: . Kepler. . AutoRegressive. Planet Search. Eric . Feigelson & . Gabriel Caceres. Penn State Astronomy & Astrophysics. with . statisticians G. . . J. . Babu. , N. . Bahamonde. , . K. . . Bertin. Transiting Exoplanets. Dainis Dravins. 1. , . Hans-Günter Ludwig. 2. ,. Erik Dahlén. 1. ,. Martin Gustavsson. 1. , . Hiva. Pazira. 1. . 1. . Lund Observatory, Sweden, . 2. . Landessternwarte. JEFFREY HALL. LOWELL OBSERVATORY, FLAGSTAFF, AZ. Project Timeline. 1988 1992 1996 2000 2004 2008 2012 . Construction/early observing. Rebuild 1. Broad survey. Solar analog survey. Rebuild 2. A/D boundary. something someone says to you on purpose to make you feel bad. it can be an . insult. or a . criticism. about you that can be hurtful to you or make you mad. Nice glasses . four-eyes…did you get ‘. Swift. -BAT blazars with . NICER. Sergio Mundo, Richard . Mushotzky. University of Maryland, College Park. MARLAM 9, JHU, Baltimore, MD. Blazar characteristics. Radio-loud AGN with jet aligned close to line of sight.