I Melkeveien Side 12: Galaktisk Leksikon Over Annerledesverdener
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Explore the Universe Observing Certificate Second Edition
RASC Observing Committee Explore the Universe Observing Certificate Second Edition Explore the Universe Observing Certificate Welcome to the Explore the Universe Observing Certificate Program. This program is designed to provide the observer with a well-rounded introduction to the night sky visible from North America. Using this observing program is an excellent way to gain knowledge and experience in astronomy. Experienced observers find that a planned observing session results in a more satisfying and interesting experience. This program will help introduce you to amateur astronomy and prepare you for other more challenging certificate programs such as the Messier and Finest NGC. The program covers the full range of astronomical objects. Here is a summary: Observing Objective Requirement Available Constellations and Bright Stars 12 24 The Moon 16 32 Solar System 5 10 Deep Sky Objects 12 24 Double Stars 10 20 Total 55 110 In each category a choice of objects is provided so that you can begin the certificate at any time of the year. In order to receive your certificate you need to observe a total of 55 of the 110 objects available. Here is a summary of some of the abbreviations used in this program Instrument V – Visual (unaided eye) B – Binocular T – Telescope V/B - Visual/Binocular B/T - Binocular/Telescope Season Season when the object can be best seen in the evening sky between dusk. and midnight. Objects may also be seen in other seasons. Description Brief description of the target object, its common name and other details. Cons Constellation where object can be found (if applicable) BOG Ref Refers to corresponding references in the RASC’s The Beginner’s Observing Guide highlighting this object. -
Abstracts Book
CONFERENCE BOOK TASC2 & SEISMOLOGY OF KASC9 THE SUN AND THE / Workshop SPACEINN & DISTANT STARS HELAS8 2016 /USING TODAY’S / Conference SUCCE SSES TO 11–15 July PREPARE THE Angra do Heroísmo Terceira, Açores FUTURE Portugal ORGANIZERS SPONSORS SEISMOLOGY OF THE SUN AND THE DISTANT STARS 2016 USING TODAY’S SUCCESSES TO PREPARE THE FUTURE Scientific Rationale For the last 30 years, since the meeting on Seismology of the Sun and the Distant Stars held in Cambridge, in 1985, the range of seismic data and associated science results obtained has far exceeded the expectations of the community. The continuous observation of the Sun has secured major advances in the understanding of the physics of the stellar interiors and has allowed us to build and prepare the tools to look at other stars. Several ground facilities and space missions have completed the picture by adding the necessary data to study stars across the HR diagram with a level of detail that was in no way foreseen in 1985. In spite of the great science successes, astero- and helioseismic data still contain many secrets waiting to be uncovered. The opportunity to use the existing data and tools to clarify major questions of stellar physics (mixing, rotation, convection, and magnetic activity are just a few examples) still needs to be further explored. The combination of data from different instruments and for different targets also holds the promise that further advances are indeed imminent. At the same time we also need to prepare the future, as major space missions and ground facilities are being built in order to collect more and better data to expand and consolidate the detailed seismic view of the stellar population in our galaxy. -
UC Irvine UC Irvine Previously Published Works
UC Irvine UC Irvine Previously Published Works Title Astrophysics in 2006 Permalink https://escholarship.org/uc/item/5760h9v8 Journal Space Science Reviews, 132(1) ISSN 0038-6308 Authors Trimble, V Aschwanden, MJ Hansen, CJ Publication Date 2007-09-01 DOI 10.1007/s11214-007-9224-0 License https://creativecommons.org/licenses/by/4.0/ 4.0 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Space Sci Rev (2007) 132: 1–182 DOI 10.1007/s11214-007-9224-0 Astrophysics in 2006 Virginia Trimble · Markus J. Aschwanden · Carl J. Hansen Received: 11 May 2007 / Accepted: 24 May 2007 / Published online: 23 October 2007 © Springer Science+Business Media B.V. 2007 Abstract The fastest pulsar and the slowest nova; the oldest galaxies and the youngest stars; the weirdest life forms and the commonest dwarfs; the highest energy particles and the lowest energy photons. These were some of the extremes of Astrophysics 2006. We attempt also to bring you updates on things of which there is currently only one (habitable planets, the Sun, and the Universe) and others of which there are always many, like meteors and molecules, black holes and binaries. Keywords Cosmology: general · Galaxies: general · ISM: general · Stars: general · Sun: general · Planets and satellites: general · Astrobiology · Star clusters · Binary stars · Clusters of galaxies · Gamma-ray bursts · Milky Way · Earth · Active galaxies · Supernovae 1 Introduction Astrophysics in 2006 modifies a long tradition by moving to a new journal, which you hold in your (real or virtual) hands. The fifteen previous articles in the series are referenced oc- casionally as Ap91 to Ap05 below and appeared in volumes 104–118 of Publications of V. -
Détection Et Modélisation De Binaires Sismiques Avec Kepler
Frédéric MARCADON Détection et modélisation de binaires sismiques avec Kepler Directeur de thèse : Thierry APPOURCHAUX Institut d’Astrophysique Spatiale Orsay – 20 mars 2018 Introduction à l’astérosismologie Astérosismologie avec K2 Intérêt des étoiles binaires Introduction générale Missions CoRoT et Kepler : détection d’exoplanètes par la méthode des transits et caractérisation des étoiles hôtes par l’astérosismologie. Astérosismologie : outil de diagnostic de la structure interne des étoiles et de détermination de leurs propriétés physiques (masse et âge). Observation des variations de luminosité des étoiles au cours du temps par photométrie (courbes de lumière). Frédéric MARCADON Détection et modélisation de binaires sismiques avec Kepler 1 / 36 Introduction à l’astérosismologie Astérosismologie avec K2 Intérêt des étoiles binaires Sommaire 1 Introduction à l’astérosismologie 2 Astérosismologie avec K2 3 Intérêt des étoiles binaires 4 Binaires sismiques avec Kepler 5 Analyse orbitale de HD 188753 6 Modélisation de HD 188753 7 Conclusions et perspectives Frédéric MARCADON Détection et modélisation de binaires sismiques avec Kepler 2 / 36 Introduction à l’astérosismologie Astérosismologie avec K2 Intérêt des étoiles binaires Sommaire 1 Introduction à l’astérosismologie 2 Astérosismologie avec K2 3 Intérêt des étoiles binaires 4 Binaires sismiques avec Kepler 5 Analyse orbitale de HD 188753 6 Modélisation de HD 188753 7 Conclusions et perspectives Frédéric MARCADON Détection et modélisation de binaires sismiques avec Kepler 2 / 36 Introduction à l’astérosismologie Astérosismologie avec K2 Intérêt des étoiles binaires Théorie des oscillations stellaires Astérosismologie : étude des oscillations des étoiles permettant de sonder leur structure interne. Différents types d’ondes se propageant à l’intérieur de l’étoile : les ondes acoustiques générées dans la zone convective et dont la force de rappel est la pression (modes p). -
Sky Notes by Neil Bone 2007 June & July
Sky notes by Neil Bone 2007 June & July before sunrise, appearing against the stars of At magnitude –2.5, Jupiter is the brightest Sun and Moon western Gemini. object apart from the Moon in the summer Venus continues its very prominent show- midnight sky. Telescopically, it shows a flat- The Sun reaches its most northerly ing as ‘evening star’, reaching greatest elonga- tened disk with an equatorial diameter of position on the ecliptic on June 2, the date tion 45° west of the Sun on June 9. Around 45 arcseconds – sufficiently large that in- of the Summer Solstice. For a few days this date, Venus will show a half-phase (like struments as small as 60mm aperture will around this time the Sun rises as far north that of the first quarter Moon) in small tel- show some detail in the planet’s cloudy of east and sets as far north of west as it escopes. Half-phase – dichotomy – is nor- atmosphere. The dominant features are dark can, and the hours of daylight are at a mally reached a little before the date of great- belts and lighter zones and spots. The Great maximum for the year for observers at the est evening elongation, an anomaly known as Red Spot and its recently-evolved ‘Red latitudes of the British Isles. Even at the Schröter Effect. Around the time of great- Junior’ counterpart continue to attract much midnight, the Sun is never far below the est elongation, Venus sets three hours after observer attention. horizon at UK latitudes: from the the Sun. -
Astrophysics in 2006 3
ASTROPHYSICS IN 2006 Virginia Trimble1, Markus J. Aschwanden2, and Carl J. Hansen3 1 Department of Physics and Astronomy, University of California, Irvine, CA 92697-4575, Las Cumbres Observatory, Santa Barbara, CA: ([email protected]) 2 Lockheed Martin Advanced Technology Center, Solar and Astrophysics Laboratory, Organization ADBS, Building 252, 3251 Hanover Street, Palo Alto, CA 94304: ([email protected]) 3 JILA, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder CO 80309: ([email protected]) Received ... : accepted ... Abstract. The fastest pulsar and the slowest nova; the oldest galaxies and the youngest stars; the weirdest life forms and the commonest dwarfs; the highest energy particles and the lowest energy photons. These were some of the extremes of Astrophysics 2006. We attempt also to bring you updates on things of which there is currently only one (habitable planets, the Sun, and the universe) and others of which there are always many, like meteors and molecules, black holes and binaries. Keywords: cosmology: general, galaxies: general, ISM: general, stars: general, Sun: gen- eral, planets and satellites: general, astrobiology CONTENTS 1. Introduction 6 1.1 Up 6 1.2 Down 9 1.3 Around 10 2. Solar Physics 12 2.1 The solar interior 12 2.1.1 From neutrinos to neutralinos 12 2.1.2 Global helioseismology 12 2.1.3 Local helioseismology 12 2.1.4 Tachocline structure 13 arXiv:0705.1730v1 [astro-ph] 11 May 2007 2.1.5 Dynamo models 14 2.2 Photosphere 15 2.2.1 Solar radius and rotation 15 2.2.2 Distribution of magnetic fields 15 2.2.3 Magnetic flux emergence rate 15 2.2.4 Photospheric motion of magnetic fields 16 2.2.5 Faculae production 16 2.2.6 The photospheric boundary of magnetic fields 17 2.2.7 Flare prediction from photospheric fields 17 c 2008 Springer Science + Business Media. -
August 2017 BRAS Newsletter
August 2017 Issue Next Meeting: Monday, August 14th at 7PM at HRPO nd (2 Mondays, Highland Road Park Observatory) Presenters: Chris Desselles, Merrill Hess, and Ben Toman will share tips, tricks and insights regarding the upcoming Solar Eclipse. What's In This Issue? President’s Message Secretary's Summary Outreach Report - FAE Light Pollution Committee Report Recent Forum Entries 20/20 Vision Campaign Messages from the HRPO Perseid Meteor Shower Partial Solar Eclipse Observing Notes – Lyra, the Lyre & Mythology Like this newsletter? See past issues back to 2009 at http://brastro.org/newsletters.html Newsletter of the Baton Rouge Astronomical Society August 2017 President’s Message August, 21, 2017. Total eclipse of the Sun. What more can I say. If you have not made plans for a road trip, you can help out at HRPO. All who are going on a road trip be prepared to share pictures and experiences at the September meeting. BRAS has lost another member, Bart Bennett, who joined BRAS after Chris Desselles gave a talk on Astrophotography to the Cajun Clickers Computer Club (CCCC) in January of 2016, Bart became the President of CCCC at the same time I became president of BRAS. The Clickers are shocked at his sudden death via heart attack. Both organizations will miss Bart. His obituary is posted online here: http://www.rabenhorst.com/obituary/sidney-barton-bart-bennett/ Last month’s meeting, at LIGO, was a success, even though there was not much solar viewing for the public due to clouds and rain for most of the afternoon. BRAS had a table inside the museum building, where Ben and Craig used material from the Night Sky Network for the public outreach. -
Positive Sivilisasjoner I Melkeveien
Positive sivilisasjoner i Melkeveien Denne boka er basert på en fri oversettelse fra andre del av boken A gift from the stars av Elena Danaan. Denne delen baserer seg på et brev hun fikk fra Russisk etterretning. Dette brevet inneholdt en beskrivelse av utenomjordiske sivilisasjoner som har hatt innflytelse på Jordens utvikling. Russisk etterretning fikk denne informasjonen fra en dame som bor på planeten Erra i Pleiadene. Tegningene kan også være gjort av henne. LYRA Lyra er hjemsted for en mengde verdener, og hovedvuggen til Menneskearten. Det er ingen likeverdige lånt navn til denne konstellasjonen, da utformingen av en Lyre den danner på Jord himmelen er en visuell justering bare sett fra planeten din. Selv om mange av "Lyra" -verdenene er mest forbundet med en vanlig, ekstremt gammel kultur, og fire originale menneske rasene befolket flertallet av disse verdenene (Taal, Ahel, Noor og Laan). Et stort utvalg av andre arter bor også i dette området, spesielt noen pasifistiske Reptil raser (Afim Spiantsy blant mange), men vi vil bare beskrive de rasene som har interferert med Jorden. Vi vil kalle stjernesystemene til disse for Hoved- systemer. Blant et stort antall planetariske systemer, her er under hjemmene til sivilisasjoner på høyt nivå. Menneske humanoider spredte seg i mange stjernesystemer, og det ville være for mye å nevne dem alle, da det vil innbefatte millioner av bebodde verdener i denne galaksen og det vil ikke få plass i en bok. Vi vil bare fokusere på de som har hatt innflytelse på enten Jorden eller historien til denne galaktiske kvadranten. (A) -Almeyron-systemet: (HD177830) 205 lysår fra Jorden. -
¿Cuánto Sabés Sobre El Universo?
¿CUÁNTO SABÉS SOBRE EL UNIVERSO? Apuntes básicos sobre Astronomía - 2014 Autores: Dra. Eugenia Díaz-Giménez / Dr. Ariel Zandivarez Instituto de Astronomía Teórica y Experimental (CONICET) Observatorio Astronómico de Córdoba (UNC) Imagen: Aldo Mottino / Estación Astrofísica de Bosque Alegre 2 Índice INTRODUCCIÓN.............................................................................................................................5 0.1 LA LUZ..................................................................................................................................5 0.2 LAS IMÁGENES ASTRONÓMICAS......................................................................................8 CAPÍTULO 1: Sistema Solar y otros sistemas planetarios.......................................................11 1.1 HISTORIA DE LA CONCEPCIÓN DEL SISTEMA SOLAR..................................................11 1.2 FORMACIÓN DEL SISTEMA SOLAR.................................................................................13 1.3 MOVIMIENTO DE LOS OBJETOS DEL SISTEMA SOLAR.................................................13 1.4 CARACTERÍSTICAS DE LOS OBJETOS DEL SISTEMA SOLAR......................................14 1.4.1 SOL..............................................................................................................................16 1.4.2 MERCURIO..................................................................................................................17 1.4.3 VENUS.........................................................................................................................17 -
Habitable Zones with Stable Orbits for Planets Around Binary Systems
Mon. Not. R. Astron. Soc. 000, 1–?? (—-) Printed 23 May 2014 (MN LATEX style file v2.2) Habitable Zones with Stable Orbits for Planets around Binary Systems Luisa G. Jaime1?, Luis Aguilar2, and Barbara Pichardo1 1Instituto de Astronom´ıa, Universidad Nacional Autonoma´ de Mexico,´ Apdo. postal 70-264, Ciudad Universitaria, Mexico´ 2Instituto de Astronom´ıa, Universidad Nacional Autonoma´ de Mexico,´ Apdo. postal 877, 22800 Ensenada, Mexico´ Accepted. Received ; in original form ABSTRACT A general formulation to compute habitable zones around binary stars is presented. A habitable zone in this context must satisfy two separate conditions: a radiative one and one of dynamical stability. For the case of single stars, the usual concept of circumstellar habitable zone is based on the radiative condition only, as the dynamical stability condition is taken for granted (assuming minimal perturbation from other planets). For the radiative condition, we extend the simple formulation of the circumstellar habitable zone for single stars, to the case of eccentric stellar binary systems, where two sources of luminosity at different orbital phases contribute to the irradiance of their planetary circumstellar and circumbinary regions. Our approach considers binaries with eccentric orbits and guarantees that orbits in the computed habitable zone remain within it at all orbital phases. For the dynamical stability condition, we use the approach of invariant loops developed by Pichardo et al. (2005) to find regions of stable, non-intersecting orbits, which is a robust method to find stable regions in binary stars, as it is based in the existence of integrals of motion. We apply the combined criteria to calculate habitable zones for 64 binary stars in the solar neighborhood with known orbital parameters, including some with discovered planets. -
THE STAR FORMATION NEWSLETTER an Electronic Publication Dedicated to Early Stellar Evolution and Molecular Clouds
THE STAR FORMATION NEWSLETTER An electronic publication dedicated to early stellar evolution and molecular clouds No. 159 — 22 January 2006 Editor: Bo Reipurth ([email protected]) Abstracts of recently accepted papers Physical Conditions in Orion’s Veil II: A Multi-Component Study of the Line of Sight Towards the Trapezium N. P. Abel1, G. J. Ferland1, C. R. O’Dell2, G. Shaw1 and T. H. Troland1 1 University of Kentucky, Department of Physics and Astronomy, Lexington, KY 40506, USA 2 Department of Physics and Astronomy, Vanderbilt University, Box 1807-B, Nashville, TN 37235, USA E-mail contact: [email protected] Orion’s Veil is an absorbing screen that lies along the line of sight to the Orion H II region. It consists of two or more layers of gas that must lie within a few parsecs of the Trapezium cluster. Our previous work considered the Veil as a whole and found that the magnetic field dominates the energetics of the gas in at least one component. Here we use high-resolution STIS UV spectra that resolve the two velocity components in absorption and determine the conditions in each. We derive a volume hydrogen density, 21 cm spin temperature, turbulent velocity, and kinetic temperature, for each. We combine these estimates with magnetic field measurements to find that magnetic energy significantly dominates turbulent and thermal energies in one component, while the other component is close to equipartition between turbulent and magnetic energies. We observe molecular hydrogen absorption for highly excited v, J levels that are photoexcited by the stellar continuum, and detect blueshifted S III and P III absorption lines. -
Desert Skies Tucson Amateur Astronomy Association Volume LVI, Number 7 July, 2010
Desert Skies Tucson Amateur Astronomy Association Volume LVI, Number 7 July, 2010 Comet McNaught 2009R1 ♦ Public star parties ♦ Websites: Trips On The Internet Super- ♦ Constellation of the month Skyway ♦ Chiracahua Astronomy Complex Desert Skies: July, 2010 2 Volume LVI, Number 7 Cover Photo: Imaged by Dean Ketelsen on Sunday Morning, 20 June from San Pedro Vista, on Mount Lemmon Highway. Stack of 11 40-second exposures with a Canon XSi on a C-14 with Hyperstar optics. Its ion tail stretches over a degree out of the frame. The comet was well under 10 degrees off the horizon. For more information, check out www.theketelsens.blogspot.com. TAAA Web Page: http://www.tucsonastronomy.org TAAA Phone Number: (520) 792-6414 Office/Position Name Phone E-mail Address President Keith Schlottman 290-5883 [email protected] Vice President Bill Lofquist 297-6653 [email protected] Secretary Luke Scott 749-4867 [email protected] Treasurer Teresa Plymate 883-9113 [email protected] Member-at-Large George Barber 822-2392 [email protected] Member-at-Large John Kalas 620-6502 [email protected] Member-at-Large Michael Turner 743-3437 [email protected] Chiricahua Astronomy Complex Director John Kalas 620-6502 [email protected] Chief Observer Dr. Mary Turner 743-3437 [email protected] AL Correspondent (ALCor) Nick de Mesa 797-6614 [email protected] Astro-Imaging SIG Steve Peterson 762-8211 [email protected] Astronomy Fundamentals SIG