Long Delayed Echo: New Approach to the Problem
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Modeling Super-Earth Atmospheres in Preparation for Upcoming Extremely Large Telescopes
Modeling Super-Earth Atmospheres In Preparation for Upcoming Extremely Large Telescopes Maggie Thompson1 Jonathan Fortney1, Andy Skemer1, Tyler Robinson2, Theodora Karalidi1, Steph Sallum1 1University of California, Santa Cruz, CA; 2Northern Arizona University, Flagstaff, AZ ExoPAG 19 January 6, 2019 Seattle, Washington Image Credit: NASA Ames/JPL-Caltech/T. Pyle Roadmap Research Goals & Current Atmosphere Modeling Selecting Super-Earths for State of Super-Earth Tool (Past & Present) Follow-Up Observations Detection Preliminary Assessment of Future Observatories for Conclusions & Upcoming Instruments’ Super-Earths Future Work Capabilities for Super-Earths M. Thompson — ExoPAG 19 01/06/19 Research Goals • Extend previous modeling tool to simulate super-Earth planet atmospheres around M, K and G stars • Apply modified code to explore the parameter space of actual and synthetic super-Earths to select most suitable set of confirmed exoplanets for follow-up observations with JWST and next-generation ground-based telescopes • Inform the design of advanced instruments such as the Planetary Systems Imager (PSI), a proposed second-generation instrument for TMT/GMT M. Thompson — ExoPAG 19 01/06/19 Current State of Super-Earth Detections (1) Neptune Mass Range of Interest Earth Data from NASA Exoplanet Archive M. Thompson — ExoPAG 19 01/06/19 Current State of Super-Earth Detections (2) A Approximate Habitable Zone Host Star Spectral Type F G K M Data from NASA Exoplanet Archive M. Thompson — ExoPAG 19 01/06/19 Atmosphere Modeling Tool Evolution of Atmosphere Model • Solar System Planets & Moons ~ 1980’s (e.g., McKay et al. 1989) • Brown Dwarfs ~ 2000’s (e.g., Burrows et al. 2001) • Hot Jupiters & Other Giant Exoplanets ~ 2000’s (e.g., Fortney et al. -
Arxiv:2012.09981V1 [Astro-Ph.SR] 17 Dec 2020 2 O
Contrib. Astron. Obs. Skalnat´ePleso XX, 1 { 20, (2020) DOI: to be assigned later Flare stars in nearby Galactic open clusters based on TESS data Olga Maryeva1;2, Kamil Bicz3, Caiyun Xia4, Martina Baratella5, Patrik Cechvalaˇ 6 and Krisztian Vida7 1 Astronomical Institute of the Czech Academy of Sciences 251 65 Ondˇrejov,The Czech Republic(E-mail: [email protected]) 2 Lomonosov Moscow State University, Sternberg Astronomical Institute, Universitetsky pr. 13, 119234, Moscow, Russia 3 Astronomical Institute, University of Wroc law, Kopernika 11, 51-622 Wroc law, Poland 4 Department of Theoretical Physics and Astrophysics, Faculty of Science, Masaryk University, Kotl´aˇrsk´a2, 611 37 Brno, Czech Republic 5 Dipartimento di Fisica e Astronomia Galileo Galilei, Vicolo Osservatorio 3, 35122, Padova, Italy, (E-mail: [email protected]) 6 Department of Astronomy, Physics of the Earth and Meteorology, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynsk´adolina F-2, 842 48 Bratislava, Slovakia 7 Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, H-1121 Budapest, Konkoly Thege Mikl´os´ut15-17, Hungary Received: September ??, 2020; Accepted: ????????? ??, 2020 Abstract. The study is devoted to search for flare stars among confirmed members of Galactic open clusters using high-cadence photometry from TESS mission. We analyzed 957 high-cadence light curves of members from 136 open clusters. As a result, 56 flare stars were found, among them 8 hot B-A type ob- jects. Of all flares, 63 % were detected in sample of cool stars (Teff < 5000 K), and 29 % { in stars of spectral type G, while 23 % in K-type stars and ap- proximately 34% of all detected flares are in M-type stars. -
Where Are the Distant Worlds? Star Maps
W here Are the Distant Worlds? Star Maps Abo ut the Activity Whe re are the distant worlds in the night sky? Use a star map to find constellations and to identify stars with extrasolar planets. (Northern Hemisphere only, naked eye) Topics Covered • How to find Constellations • Where we have found planets around other stars Participants Adults, teens, families with children 8 years and up If a school/youth group, 10 years and older 1 to 4 participants per map Materials Needed Location and Timing • Current month's Star Map for the Use this activity at a star party on a public (included) dark, clear night. Timing depends only • At least one set Planetary on how long you want to observe. Postcards with Key (included) • A small (red) flashlight • (Optional) Print list of Visible Stars with Planets (included) Included in This Packet Page Detailed Activity Description 2 Helpful Hints 4 Background Information 5 Planetary Postcards 7 Key Planetary Postcards 9 Star Maps 20 Visible Stars With Planets 33 © 2008 Astronomical Society of the Pacific www.astrosociety.org Copies for educational purposes are permitted. Additional astronomy activities can be found here: http://nightsky.jpl.nasa.gov Detailed Activity Description Leader’s Role Participants’ Roles (Anticipated) Introduction: To Ask: Who has heard that scientists have found planets around stars other than our own Sun? How many of these stars might you think have been found? Anyone ever see a star that has planets around it? (our own Sun, some may know of other stars) We can’t see the planets around other stars, but we can see the star. -
How Uk News Providers Engage Young Adult Audiences (Aged 16-34) on Digital and Social Media Platforms
‘OLD NEWS, YOUNG VIEWS’ HOW UK NEWS PROVIDERS ENGAGE YOUNG ADULT AUDIENCES (AGED 16-34) ON DIGITAL AND SOCIAL MEDIA PLATFORMS. by LEON HAWTHORNE A thesis submitted to the University of Birmingham for the degree of MA BY RESEARCH. Department of Film & Creative Writing School of English, Drama and Creative Studies College of Arts and Law University of Birmingham June 2020 ii University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. iii Abstract This thesis examines the changing patterns of news consumption by young adults in the United Kingdom, aged 16 to 34 years old, and the editorial responses to this by leading television news broadcasters. It begins with a comprehensive review of the most recent literature on incidental news exposure, personalisation, echo chambers and filter bubbles; combining this with analyses of key reports by industry and governmental sources. It proposes a new taxonomy of news consumption behaviours, and a new visual taxonomy of news using the RGB (red, green, blue) colour spectrum. Senior editors at ITV News, Channel 4 News, 5 News and Sky News were interviewed to provide insights into current digital strategies. -
100 Closest Stars Designation R.A
100 closest stars Designation R.A. Dec. Mag. Common Name 1 Gliese+Jahreis 551 14h30m –62°40’ 11.09 Proxima Centauri Gliese+Jahreis 559 14h40m –60°50’ 0.01, 1.34 Alpha Centauri A,B 2 Gliese+Jahreis 699 17h58m 4°42’ 9.53 Barnard’s Star 3 Gliese+Jahreis 406 10h56m 7°01’ 13.44 Wolf 359 4 Gliese+Jahreis 411 11h03m 35°58’ 7.47 Lalande 21185 5 Gliese+Jahreis 244 6h45m –16°49’ -1.43, 8.44 Sirius A,B 6 Gliese+Jahreis 65 1h39m –17°57’ 12.54, 12.99 BL Ceti, UV Ceti 7 Gliese+Jahreis 729 18h50m –23°50’ 10.43 Ross 154 8 Gliese+Jahreis 905 23h45m 44°11’ 12.29 Ross 248 9 Gliese+Jahreis 144 3h33m –9°28’ 3.73 Epsilon Eridani 10 Gliese+Jahreis 887 23h06m –35°51’ 7.34 Lacaille 9352 11 Gliese+Jahreis 447 11h48m 0°48’ 11.13 Ross 128 12 Gliese+Jahreis 866 22h39m –15°18’ 13.33, 13.27, 14.03 EZ Aquarii A,B,C 13 Gliese+Jahreis 280 7h39m 5°14’ 10.7 Procyon A,B 14 Gliese+Jahreis 820 21h07m 38°45’ 5.21, 6.03 61 Cygni A,B 15 Gliese+Jahreis 725 18h43m 59°38’ 8.90, 9.69 16 Gliese+Jahreis 15 0h18m 44°01’ 8.08, 11.06 GX Andromedae, GQ Andromedae 17 Gliese+Jahreis 845 22h03m –56°47’ 4.69 Epsilon Indi A,B,C 18 Gliese+Jahreis 1111 8h30m 26°47’ 14.78 DX Cancri 19 Gliese+Jahreis 71 1h44m –15°56’ 3.49 Tau Ceti 20 Gliese+Jahreis 1061 3h36m –44°31’ 13.09 21 Gliese+Jahreis 54.1 1h13m –17°00’ 12.02 YZ Ceti 22 Gliese+Jahreis 273 7h27m 5°14’ 9.86 Luyten’s Star 23 SO 0253+1652 2h53m 16°53’ 15.14 24 SCR 1845-6357 18h45m –63°58’ 17.40J 25 Gliese+Jahreis 191 5h12m –45°01’ 8.84 Kapteyn’s Star 26 Gliese+Jahreis 825 21h17m –38°52’ 6.67 AX Microscopii 27 Gliese+Jahreis 860 22h28m 57°42’ 9.79, -
The Denver Observer June 2016
The Denver JUNE 2016 OBSERVER Mercury transits the Sun on May 9, 2016. The planet, seen at the lower left of the Sun's face, has a diameter of about 3,000 miles, but the Sun's 870,000 mile cross-section dwarfs the planet—even though the Sun is seen here at twice Mercury's distance from us. (Note the planet-sized sunspots above-left of solar center.) Image © Ron Pearson. JUNE SKIES by Zachary Singer The Solar System the Martian surface reveals itself. On observing runs over the last few If you haven’t been observing Mars, the “unusually bright orange weeks, with good seeing, early views did indeed yield so-so results, but object in Libra,” now is a really good time: As June begins, the plan- improved noticeably as the planet neared its highest point in the south. et is just past opposition, and even more recently past its closest ap- I was able to make out the Syrtis Major region easily, even though proach to Earth, when the planet’s disk spanned a full 18.6 arcseconds. moonlight was a factor in the initial sessions. It looms large in a telescope now, and even instruments of moderate One great tool for power bring satisfying images at 100 or 150X. By midmonth, Mars improving your view Sky Calendar will be highest around 11 PM, with the disk slightly smaller, at 17.9”; is a “Moon filter.” 4 New Moon by June 30th, though, the planet will have already crossed the Meridian By bringing the sheer 12 First-Quarter Moon at 10 PM, before the sky brightness of Mars’ mag- 20 Full Moon In the Observer is fully dark, and the disk nitude -2 disk down a 27 Last-Quarter Moon will have shrunk some- notch, the moon filter President’s Message . -
Spring Constellations Leo
Night Sky 101: Spring Constellations Leo Leo, the lion, is very recognizable by the head of the lion, which looks like a backwards question mark, and is commonly known as “the sickle.” Regulus, Leo’s brightest star, is also easy to pick out in most lights. The constellation is best seen in April and May, but rises after the Spring Equinox in March. Within the constellation, there are several spiral galaxies: M65, M66, M95, and M96. It is possible to fit M65 and M66 into the same view on a low powered telescope. In Greek mythology, Leo was the Nemean lion, who was completely impervious to bronze, steel and any kind of metal. As part of his 12 labors, Hercules was charged to fight the lion and killed him Photo Credit: Starry Night by strangling him. Hercules took the lion’s pelt as a prize and Leo, the lion, was placed in the stars to commemorate their fight. Virgo Virgo is best seen in the late spring and early summer, usually May to June. The bright star Arcturus, in the constellation Boötes, lines up with the Virgo’s brightest star Spica, which makes it easy to find. Within the constellation is the Virgo Galaxy Cluster, which is a conglomerate of thousands of unnamed galaxies. These galaxies are about 65 million light years away, and usually only appear as smudges in a telescope. Virgo, the maiden, is also known as Persephone, or the daughter of the Demeter. Hades, god of the Un- derworld, fell in love with Virgo and took her to the Underworld. -
Exoplanet Exploration Program Updates
Exoplanet Exploration Program Updates Dr. Gary H. Blackwood, Program Manager Dr. Karl R. Stapelfeldt, Program Chief Scientist Jet Propulsion Laboratory California Institute of Technology January 7, 2018 ExoPAG 17, National Harbor, Maryland © 2018 All rights reserved Artist concept of Kepler-16b Kepler / K2 Program Progress vs 2010 Decadal Priorities Program Science Updates NASA Exoplanet Exploration Program Astrophysics Division, NASA Science Mission Directorate NASA's search for habitable planets and life beyond our solar system Program purpose described in 2014 NASA Science Plan 1. Discover planets around other stars 2. Characterize their properties 3. Identify candidates that could harbor life ExEP serves the science community and NASA by implementing NASA’s space science vision for exoplanets https://exoplanets.nasa.gov WFIRST JWST2 PLATO Missions TESS Kepler LUVOIR5 CHEOPS 4 Spitzer Gaia Hubble1 Starshade HabEx5 CoRoT3 Rendezvous5 OST5 NASA Non-NASA Missions Missions W. M. Keck Observatory Large Binocular 1 NASA/ESA Partnership Telescope Interferometer NN-EXPLORE 2 NASA/ESA/CSA Partnership 3 CNES/ESA Ground Telescopes with NASA participation 5 4 ESA/Swiss Space Office 2020 Decadal Survey Studies NASA Exoplanet Exploration Program Space Missions and Mission Studies Communications Kepler & Probe-Scale Studies K2 Starshade Coronagraph Supporting Research & Technology Key NASA Exoplanet Science Institute Sustaining Occulting Technology Development Research Masks Deformable Mirrors NN-EXPLORE Keck Single Archives, Tools, Sagan Fellowships, Aperture Professional Engagement Imaging & RV High-Contrast Imaging Deployable Starshades Large Binocular Telescope Interferometer https://exoplanets.nasa.gov 4 NASA Exoplanet Exploration Program Astrophysics Division, Science Mission Directorate Program Office (JPL) PM- Dr. G. Blackwood DPM- K. Short Chief Scientist – Dr. -
National Observatories
Sidney C Wolff NOAO/DIR NATIONAL OPTICAL ASTRONOMY OBSERVATORIES NATIONAL OPTICAL ASTRONOMY OBSERVATORIES Cerro Tololo Inter-American Observatory Kitt Peak National Observatory National Solar Observatory La Serena, Chile Tucson, Arizona 85726 Sunspot, New Mexico 88349 ANNUAL REPORT October 1996 - September 1997 October 30,1997 TABLE OF CONTENTS L INTRODUCTION IL AURA BOARD m. SCffiNTDJIC PROGRAM A. Cerro Tololo Inter-American Observatory (CTIO) 1. The Search for High Z Supernovae 2. Nearby Stars and Planets 2 B. Kitt Peak National Observatory (KPNO) 3 1. The History of Star Formation in Distant Galaxies 3 2. Oxygen Abundance and the Age of the Universe 4 3. The Age of Elliptical Galaxies - Is There Enough Time? 5 C. National Solar Observatory (NSO) 5 1. Results from GONG 5 2. High-Resolution Images of Solar Magnetic Fields 6 3. Active Optics Control Loop Closed at the Sac Peak Vacuum Tower Telescope 7 IV. DIVISION OPERATIONS 7 A. CTIO 7 Telescope Upgrades and Instrumentation 7 1. 4-m Upgrades 8 2. Major Instrumentation Efforts 9 3. SOAR 4-m Telescope Project 9 4. CCD Implementation and ARCON Controller Development 10 5. Existing Small General-User Telescopes on Cerro Tololo 10 6. New "Tenant" Installations and Upgrades 10 7. Other 11 B. KPNO 12 1. Image Quality Improvements 12 2. WTYN Queue Observing Experiment 12 3. WTYN 13 4. KPNO Instrumentation Improvements 14 5. Burrell-Schmidt 14 C. NSO 15 1. Kitt Peak 15 2. Sacramento Peak 17 3. Digital Library Development 21 D. USGP/ScOpe 21 E. NOAO Instrumentation 25 1. CCD Mosaic Imager 26 2. -
CONSTELLATION BOÖTES, the HERDSMAN Boötes Is the Cultivator Or Ploughman Who Drives the Bears, Ursa Major and Ursa Minor Around the Pole Star Polaris
CONSTELLATION BOÖTES, THE HERDSMAN Boötes is the cultivator or Ploughman who drives the Bears, Ursa Major and Ursa Minor around the Pole Star Polaris. The bears, tied to the Polar Axis, are pulling a plough behind them, tilling the heavenly fields "in order that the rotations of the heavens should never cease". It is said that Boötes invented the plough to enable mankind to better till the ground and as such, perhaps, immortalizes the transition from a nomadic life to settled agriculture in the ancient world. This pleased Ceres, the Goddess of Agriculture, so much that she asked Jupiter to place Boötes amongst the stars as a token of gratitude. Boötes was first catalogued by the Greek astronomer Ptolemy in the 2nd century and is home to Arcturus, the third individual brightest star in the night sky, after Sirius in Canis Major and Canopus in Carina constellation. It is a constellation of large extent, stretching from Draco to Virgo, nearly 50° in declination, and 30° in right ascension, and contains 85 naked-eye stars according to Argelander. The constellation exhibits better than most constellations the character assigned to it. One can readily picture to one's self the figure of a Herdsman with upraised arm driving the Greater Bear before him. FACTS, LOCATION & MAP • The neighbouring constellations are Canes Venatici, Coma Berenices, Corona Borealis, Draco, Hercules, Serpens Caput, Virgo, and Ursa Major. • Boötes has 10 stars with known planets and does not contain any Messier objects. • The brightest star in the constellation is Arcturus, Alpha Boötis, which is also the third brightest star in the night sky. -
A Basic Requirement for Studying the Heavens Is Determining Where In
Abasic requirement for studying the heavens is determining where in the sky things are. To specify sky positions, astronomers have developed several coordinate systems. Each uses a coordinate grid projected on to the celestial sphere, in analogy to the geographic coordinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle (the fundamental plane of the geographic system is the Earth's equator) . Each coordinate system is named for its choice of fundamental plane. The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the one most closely related to the geographic coordinate system, because they use the same fun damental plane and the same poles. The projection of the Earth's equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles on to the celest ial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate systems: the geographic system is fixed to the Earth; it rotates as the Earth does . The equatorial system is fixed to the stars, so it appears to rotate across the sky with the stars, but of course it's really the Earth rotating under the fixed sky. The latitudinal (latitude-like) angle of the equatorial system is called declination (Dec for short) . It measures the angle of an object above or below the celestial equator. The longitud inal angle is called the right ascension (RA for short). -
Sydney Is Singularly Fortunate in That, Unlike Other Australian Cities, Its Newspaper History Has Been Well Documented
Two hundred years of Sydney newspapers: A SHORT HISTORY By Victor Isaacs and Rod Kirkpatrick 1 This booklet, Two Hundreds Years of Sydney Newspapers: A Short History, has been produced to mark the bicentenary of publication of the first Australian newspaper, the Sydney Gazette and New South Wales Advertiser, on 5 March 1803 and to provide a souvenir for those attending the Australian Newspaper Press Bicentenary Symposium at the State Library of New South Wales, Sydney, on 1 March 2003. The Australian Newspaper History Group convened the symposium and records it gratitude to the following sponsors: • John Fairfax Holdings Ltd, publisher of Australia’s oldest newspaper, the Sydney Morning Herald • Paper World Pty Ltd, of Melbourne, suppliers of original newspapers from the past • RMIT University’s School of Applied Communication, Melbourne • The Printing Industries Association of Australia • The Graphic Arts Merchants Association of Australia • Rural Press Ltd, the major publisher of regional newspapers throughout Australia • The State Library of New South Wales Printed in February 2003 by Rural Press Ltd, North Richmond, New South Wales, with the assistance of the Printing Industries Association of Australia. 2 Introduction Sydney is singularly fortunate in that, unlike other Australian cities, its newspaper history has been well documented. Hence, most of this short history of Sydney’s newspapers is derived from secondary sources, not from original research. Through the comprehensive listing of relevant books at the end of this booklet, grateful acknowledgement is made to the writers, and especially to Robin Walker, Gavin Souter and Bridget Griffen-Foley whose work has been used extensively.