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A Temperate Rocky Super-Earth Transiting a Nearby Cool Star Jason A
LETTER doi:10.1038/nature22055 A temperate rocky super-Earth transiting a nearby cool star Jason A. Dittmann1, Jonathan M. Irwin1, David Charbonneau1, Xavier Bonfils2,3, Nicola Astudillo-Defru4, Raphaëlle D. Haywood1, Zachory K. Berta-Thompson5, Elisabeth R. Newton6, Joseph E. Rodriguez1, Jennifer G. Winters1, Thiam-Guan Tan7, Jose-Manuel Almenara2,3,4, François Bouchy8, Xavier Delfosse2,3, Thierry Forveille2,3, Christophe Lovis4, Felipe Murgas2,3,9, Francesco Pepe4, Nuno C. Santos10,11, Stephane Udry4, Anaël Wünsche2,3, Gilbert A. Esquerdo1, David W. Latham1 & Courtney D. Dressing12 15 16,17 M dwarf stars, which have masses less than 60 per cent that of Ks magnitude and empirically determined stellar relationships , the Sun, make up 75 per cent of the population of the stars in the we estimate the stellar mass to be 14.6% that of the Sun and the stellar Galaxy1. The atmospheres of orbiting Earth-sized planets are radius to be 18.6% that of the Sun. We estimate the metal content of the observationally accessible via transmission spectroscopy when star to be approximately half that of the Sun ([Fe/H] = −0.24 ± 0.10; the planets pass in front of these stars2,3. Statistical results suggest 1σ error), and we measure the rotational period of the star to be that the nearest transiting Earth-sized planet in the liquid-water, 131 days from our long-term photometric monitoring (see Methods). habitable zone of an M dwarf star is probably around 10.5 parsecs On 15 September 2014 ut, MEarth-South identified a potential away4. A temperate planet has been discovered orbiting Proxima transit in progress around LHS 1140, and automatically commenced Centauri, the closest M dwarf5, but it probably does not transit and high-cadence follow-up observations (see Extended Data Fig. -
Commonwealth of Australia Gazette ASIC 16/02, Tuesday, 9 April 2002
= = `çããçåïÉ~äíÜ=çÑ=^ìëíê~äá~= = Commonwealth of Australia Gazette No. ASIC 16/02, Tuesday, 9 April 2002 Published by ASIC ^^ppff``==dd~~òòÉÉííííÉÉ== Contents Notices under the Corporations Act 2001 00/2496 01/1681 01/1682 02/0391 02/0392 02/0393 02/0394 02/0395 02/0396 02/0397 02/0398 02/0399 02/0400 02/0401 02/0402 02/0403 02/0404 02/0405 02/0406 02/0408 02/0409 Company deregistrations Page 43 Change of company status Page 404 Company reinstatements Page 405 ISSN 1445-6060 Available from www.asic.gov.au © Commonwealth of Australia, 2001 Email [email protected] This work is copyright. Apart from any use permitted under the Copyright Act 1968, all rights are reserved. Requests for authorisation to reproduce, publish or communicate this work should be made to: Gazette Publisher, Australian Securities and Investment Commission, GPO Box 5179AA, Melbourne Vic 3001 Commonwealth of Australia Gazette ASIC Gazette ASIC 16/02, Tuesday, 9 April 2002 Company deregistrations Page 43= = CORPORATIONS ACT 2001 Section 601CL(5) Notice is hereby given that the names of the foreign companies mentioned below have been struck off the register. Dated this nineteenth day of March 2002 Brendan Morgan DELEGATE OF THE AUSTRALIAN SECURITIES AND INVESTMENTS COMMISSION Name of Company ARBN ABBOTT WINES LIMITED 091 394 204 ADERO INTERNATIONAL,INC. 094 918 886 AEROSPATIALE SOCIETE NATIONALE INDUSTRIELLE 083 792 072 AGGREKO UK LIMITED 052 895 922 ANZEX RESOURCES LTD 088 458 637 ASIAN TITLE LIMITED 083 755 828 AXENT TECHNOLOGIES I, INC. 094 401 617 BANQUE WORMS 082 172 307 BLACKWELL'S BOOK SERVICES LIMITED 093 501 252 BLUE OCEAN INT'L LIMITED 086 028 391 BRIGGS OF BURTON PLC 094 599 372 CANAUSTRA RESOURCES INC. -
Proper Motion Analysis of the Jet of R Aquarii
A&A 424, 157–164 (2004) Astronomy DOI: 10.1051/0004-6361:20035866 & c ESO 2004 Astrophysics Proper motion analysis of the jet of R Aquarii K. Mäkinen1,H.J.Lehto1,2,R.Vainio3, and D. R. H. Johnson4 1 Tuorla Observatory, Väisäläntie 20, 21500 Piikkiö, Finland e-mail: [email protected] 2 Department of Physics, 20014 Turku University, Finland 3 Department of Physical Sciences, PO Box 64, 00014 University of Helsinki, Finland 4 Charterhouse, Godalming, Surrey, GU7 2DX, UK Received 15 December 2003 / Accepted 18 May 2004 Abstract. We have observed the jet of R Aquarii at high resolution with the VLA in 1992.83 and in 1999.78. Observations in the first epoch have resolved the base of the jet which shows a helical structure. We cannot detect the expected new jet component at either epoch. This does not disprove the idea of periodic ejection. Either the timing inferred from the acceleration models, or the assumed periastron passage is incorrect. Alternatively, a single new component cannot be resolved due to the dense core. Proper motion analysis of the jet components shows that previously derived acceleration models do not fit our new data. Indeed, the first ∼1 of the jet, both to north-east and south-west, appears fixed and has slowly moving shocks at the termination points, whereas the positions of the outer components fit best a ballistic orbit. We propose that the components are formed due to enhanced matter flow at periastron, accelerated during the first 1 and then ejected as bullets. Component A at a distance of ∼4 from the core has broken into two parts, similar to what was previously assumed to have happened to the outermost components B and D. -
GTO Keypad Manual, V5.001
ASTRO-PHYSICS GTO KEYPAD Version v5.xxx Please read the manual even if you are familiar with previous keypad versions Flash RAM Updates Keypad Java updates can be accomplished through the Internet. Check our web site www.astro-physics.com/software-updates/ November 11, 2020 ASTRO-PHYSICS KEYPAD MANUAL FOR MACH2GTO Version 5.xxx November 11, 2020 ABOUT THIS MANUAL 4 REQUIREMENTS 5 What Mount Control Box Do I Need? 5 Can I Upgrade My Present Keypad? 5 GTO KEYPAD 6 Layout and Buttons of the Keypad 6 Vacuum Fluorescent Display 6 N-S-E-W Directional Buttons 6 STOP Button 6 <PREV and NEXT> Buttons 7 Number Buttons 7 GOTO Button 7 ± Button 7 MENU / ESC Button 7 RECAL and NEXT> Buttons Pressed Simultaneously 7 ENT Button 7 Retractable Hanger 7 Keypad Protector 8 Keypad Care and Warranty 8 Warranty 8 Keypad Battery for 512K Memory Boards 8 Cleaning Red Keypad Display 8 Temperature Ratings 8 Environmental Recommendation 8 GETTING STARTED – DO THIS AT HOME, IF POSSIBLE 9 Set Up your Mount and Cable Connections 9 Gather Basic Information 9 Enter Your Location, Time and Date 9 Set Up Your Mount in the Field 10 Polar Alignment 10 Mach2GTO Daytime Alignment Routine 10 KEYPAD START UP SEQUENCE FOR NEW SETUPS OR SETUP IN NEW LOCATION 11 Assemble Your Mount 11 Startup Sequence 11 Location 11 Select Existing Location 11 Set Up New Location 11 Date and Time 12 Additional Information 12 KEYPAD START UP SEQUENCE FOR MOUNTS USED AT THE SAME LOCATION WITHOUT A COMPUTER 13 KEYPAD START UP SEQUENCE FOR COMPUTER CONTROLLED MOUNTS 14 1 OBJECTS MENU – HAVE SOME FUN! -
Planets and Exoplanets
NASE Publications Planets and exoplanets Planets and exoplanets Rosa M. Ros, Hans Deeg International Astronomical Union, Technical University of Catalonia (Spain), Instituto de Astrofísica de Canarias and University of La Laguna (Spain) Summary This workshop provides a series of activities to compare the many observed properties (such as size, distances, orbital speeds and escape velocities) of the planets in our Solar System. Each section provides context to various planetary data tables by providing demonstrations or calculations to contrast the properties of the planets, giving the students a concrete sense for what the data mean. At present, several methods are used to find exoplanets, more or less indirectly. It has been possible to detect nearly 4000 planets, and about 500 systems with multiple planets. Objetives - Understand what the numerical values in the Solar Sytem summary data table mean. - Understand the main characteristics of extrasolar planetary systems by comparing their properties to the orbital system of Jupiter and its Galilean satellites. The Solar System By creating scale models of the Solar System, the students will compare the different planetary parameters. To perform these activities, we will use the data in Table 1. Planets Diameter (km) Distance to Sun (km) Sun 1 392 000 Mercury 4 878 57.9 106 Venus 12 180 108.3 106 Earth 12 756 149.7 106 Marte 6 760 228.1 106 Jupiter 142 800 778.7 106 Saturn 120 000 1 430.1 106 Uranus 50 000 2 876.5 106 Neptune 49 000 4 506.6 106 Table 1: Data of the Solar System bodies In all cases, the main goal of the model is to make the data understandable. -
GEORGE HERBIG and Early Stellar Evolution
GEORGE HERBIG and Early Stellar Evolution Bo Reipurth Institute for Astronomy Special Publications No. 1 George Herbig in 1960 —————————————————————– GEORGE HERBIG and Early Stellar Evolution —————————————————————– Bo Reipurth Institute for Astronomy University of Hawaii at Manoa 640 North Aohoku Place Hilo, HI 96720 USA . Dedicated to Hannelore Herbig c 2016 by Bo Reipurth Version 1.0 – April 19, 2016 Cover Image: The HH 24 complex in the Lynds 1630 cloud in Orion was discov- ered by Herbig and Kuhi in 1963. This near-infrared HST image shows several collimated Herbig-Haro jets emanating from an embedded multiple system of T Tauri stars. Courtesy Space Telescope Science Institute. This book can be referenced as follows: Reipurth, B. 2016, http://ifa.hawaii.edu/SP1 i FOREWORD I first learned about George Herbig’s work when I was a teenager. I grew up in Denmark in the 1950s, a time when Europe was healing the wounds after the ravages of the Second World War. Already at the age of 7 I had fallen in love with astronomy, but information was very hard to come by in those days, so I scraped together what I could, mainly relying on the local library. At some point I was introduced to the magazine Sky and Telescope, and soon invested my pocket money in a subscription. Every month I would sit at our dining room table with a dictionary and work my way through the latest issue. In one issue I read about Herbig-Haro objects, and I was completely mesmerized that these objects could be signposts of the formation of stars, and I dreamt about some day being able to contribute to this field of study. -
Meteor Csillagászati Évkönyv
Ár: 3000 Ft 2016 meteor csillagászati évkönyv csillagászati évkönyv meteor ISSN 0866- 2851 2016 9 770866 285002 meteor 2016 Távcsöves Találkozó Tarján, 2016. július 28–31. www.mcse.hu Magyar Csillagászati Egyesület Fotó: Sztankó Gerda, Tarján, 2012 METEOR CSILLAGÁSZATI ÉVKÖNYV 2016 METEOR CSILLAGÁSZATI ÉVKÖNYV 2016 MCSE – 2015. OKTÓBER–NOVEMBER METEOR CSILLAGÁSZATI ÉVKÖNYV 2016 MCSE – 2015. OKTÓBER–NOVEMBER meteor csillagászati évkönyv 2016 Szerkesztette: Benkõ József Mizser Attila Magyar Csillagászati Egyesület www.mcse.hu Budapest, 2015 METEOR CSILLAGÁSZATI ÉVKÖNYV 2016 MCSE – 2015. OKTÓBER–NOVEMBER Az évkönyv kalendárium részének összeállításában közremûködött: Bagó Balázs Kaposvári Zoltán Kiss Áron Keve Kovács József Molnár Péter Sánta Gábor Sárneczky Krisztián Szabadi Péter Szabó M. Gyula Szabó Sándor Szôllôsi Attila A kalendárium csillagtérképei az Ursa Minor szoftverrel készültek. www.ursaminor.hu Szakmailag ellenôrizte: Szabados László A kiadvány a Magyar Tudományos Akadémia támogatásával készült. További támogatóink mindazok, akik az SZJA 1%-ával támogatják a Magyar Csillagászati Egyesületet. Adószámunk: 19009162-2-43 Felelôs kiadó: Mizser Attila Nyomdai elôkészítés: Kármán Stúdió, www.karman.hu Nyomtatás, kötészet: OOK-Press Kft., www.ookpress.hu Felelôs vezetô: Szathmáry Attila Terjedelem: 23 ív fekete-fehér + 12 oldal színes melléklet 2015. november ISSN 0866-2851 METEOR CSILLAGÁSZATI ÉVKÖNYV 2016 MCSE – 2015. OKTÓBER–NOVEMBER Tartalom Bevezetô ................................................... 7 Kalendárium .............................................. -
Ultraviolet Temporal Variability of the Peculiar Star R Aquarii S
Chapman University Chapman University Digital Commons Mathematics, Physics, and Computer Science Science and Technology Faculty Articles and Faculty Articles and Research Research 1995 Ultraviolet Temporal Variability of the Peculiar Star R Aquarii S. R. Meier USN, Research Laboratory Menas Kafatos Chapman University, [email protected] Follow this and additional works at: http://digitalcommons.chapman.edu/scs_articles Part of the Instrumentation Commons, and the Stars, Interstellar Medium and the Galaxy Commons Recommended Citation Meier, S.R., Kafatos, M. (1995) Ultraviolet Temporal Variability of the Peculiar Star R Aquarii, Astrophysical Journal, 451: 359-371. doi: 10.1086/176225 This Article is brought to you for free and open access by the Science and Technology Faculty Articles and Research at Chapman University Digital Commons. It has been accepted for inclusion in Mathematics, Physics, and Computer Science Faculty Articles and Research by an authorized administrator of Chapman University Digital Commons. For more information, please contact [email protected]. Ultraviolet Temporal Variability of the Peculiar Star R Aquarii Comments This article was originally published in Astrophysical Journal, volume 451, in 1995. DOI: 10.1086/176225 Copyright IOP Publishing This article is available at Chapman University Digital Commons: http://digitalcommons.chapman.edu/scs_articles/139 THE AsTROPHYSICAL JOURNAL, 451:359-371, 1995 September 20 © 1995. The American Astronomical Society. All rights reserved. Printed in U.S.A. 1995ApJ...451..359M -
R Aquarii: Understanding the Mystery of Its Jets by Model Comparison Michelle Marie Risse Iowa State University
Iowa State University Capstones, Theses and Graduate Theses and Dissertations Dissertations 2009 R Aquarii: Understanding the mystery of its jets by model comparison Michelle Marie Risse Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Part of the Physics Commons Recommended Citation Risse, Michelle Marie, "R Aquarii: Understanding the mystery of its jets by model comparison" (2009). Graduate Theses and Dissertations. 10565. https://lib.dr.iastate.edu/etd/10565 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. R Aquarii: Understanding the mystery of its jets by model comparison by Michelle Marie Risse A thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major: Astrophysics Program of Study Committee: Lee Anne Willson, Major Professor Steven D. Kawaler Craig A. Ogilvie David B. Wilson Iowa State University Ames, Iowa 2009 Copyright c Michelle Marie Risse, 2009. All rights reserved. ii TABLE OF CONTENTS LISTOFTABLES ................................... iv LISTOFFIGURES .................................. v CHAPTER1. Intent ................................. 1 CHAPTER2. Introduction ............................. 2 2.1 -
January 2019 BRAS Newsletter
Monthly Meeting January 14th at 7PM at HRPO (Monthly meetings are on 2nd Mondays, Highland Road Park Observatory). Speaker: Jim Gutierrez, Sunspots, Hot Spots and Relativity What's In This Issue? President’s Message Secretary's Summary Outreach Report Astrophotography Group Comet and Asteroid News Light Pollution Committee Report “Free The Milky Way” Campaign Recent BRAS Forum Entries Messages from the HRPO Science Academy Friday Night Lecture Series Globe at Night Adult Astronomy Courses Total Lunar Eclipse Observing Notes – Ara – The Alter & Mythology Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society Newsletter of the Baton Rouge Astronomical Society January 2019 © 2019 President’s Message First off, I thank you for placing your trust in me for another year. Another thanks goes out to Scott Cadwallader and John R. Nagle for fixing the Library Telescope. The telescope was missing a thumbnut witch Orion Telescope replaced, Scott and John, put the thumbnut back on and reset the collimation. Let’s don’t forget the Total Lunar Eclipse coming up this January 20th. See HRPO announcement below. We are planning 2019 and hope to have an enjoyable year for our members. I’d like to find more opportunity to point our telescopes at the night sky. If there is anything you’d like to see, do, or wish to offer let us know. Our webmaster has set up a private forum: "BRAS Members Only" Group/Section to the "Baton Rouge Astronomical Society Forum" (http://www.brastro.org/phpBB3/). The plan is to use this Group/Section to get additional information to members and get feedback from members without the need of flooding everyone's inbox. -
Ephemerides Astronomicae ... Ad Meridianum Medioalanensum
Informazioni su questo libro Si tratta della copia digitale di un libro che per generazioni è stato conservata negli scaffali di una biblioteca prima di essere digitalizzato da Google nell’ambito del progetto volto a rendere disponibili online i libri di tutto il mondo. Ha sopravvissuto abbastanza per non essere più protetto dai diritti di copyright e diventare di pubblico dominio. Un libro di pubblico dominio è un libro che non è mai stato protetto dal copyright o i cui termini legali di copyright sono scaduti. La classificazione di un libro come di pubblico dominio può variare da paese a paese. I libri di pubblico dominio sono l’anello di congiunzione con il passato, rappresentano un patrimonio storico, culturale e di conoscenza spesso difficile da scoprire. Commenti, note e altre annotazioni a margine presenti nel volume originale compariranno in questo file, come testimonianza del lungo viaggio percorso dal libro, dall’editore originale alla biblioteca, per giungere fino a te. Linee guide per l’utilizzo Google è orgoglioso di essere il partner delle biblioteche per digitalizzare i materiali di pubblico dominio e renderli universalmente disponibili. I libri di pubblico dominio appartengono al pubblico e noi ne siamo solamente i custodi. Tuttavia questo lavoro è oneroso, pertanto, per poter continuare ad offrire questo servizio abbiamo preso alcune iniziative per impedire l’utilizzo illecito da parte di soggetti commerciali, compresa l’imposizione di restrizioni sull’invio di query automatizzate. Inoltre ti chiediamo di: + Non fare un uso commerciale di questi file Abbiamo concepito Google Ricerca Libri per l’uso da parte dei singoli utenti privati e ti chiediamo di utilizzare questi file per uso personale e non a fini commerciali. -
January 2020 OBSERVER
THE OBSERVER OF THE TWIN CITY AMATEUR ASTRONOMERS Volume 45, Number 1 January 2020 INSIDE THIS ISSUE: 1«Editor’s Choice: Image of the Month – Messier 1 2«President’s Note 3«Calendar of Celestial Events – January 2020 3«New & Renewing Members/Dues Blues/E-Mail List 4«This Month’s Phases of the Moon 4«This Month’s Solar Phenomena 4«TCAA Calendar of Events for 2020 4«Member Education During January 2020 5«AstroBits – News from Around the TCAA 6«Make Plans Now to Attend TCAA Annual Meeting 7«January 2020 with Jeffrey Hunt 13«Renewing Your TCAA Membership 13«Did You Know? 13«Public Viewing Sessions for 2020 18«TCAA Treasurer’s Report The TCAA is an affiliate of the Astronomical League as well as its North Central Region. For more information about the TCAA, be certain to visit the TCAA website at tcaa.us/ Visit Astroleague.org for additional information about the League and its IMAGE OF THE MONTH: EDITOR’S CHOICE – M1 numerous membership benefits, including observing programs. This month’s image choice shows Messier 1, the Crab Nebula. It was imaged on December 22nd by Scott Wade and Bob Finnigan at Prairie Sky Observatory using the 14” PlaneWave telescope. The Also, visit the NCRAL website at image consists of nine 1,200-second subs taken with the QHY 367 ncral.wordpress.com for information C color camera. about our North Central Region. Find The Crab Nebula is a supernova remnant in the constellation out about our next Regional of Taurus. The name is due to William Parsons, 3rd Earl of Rosse, convention during May 2020.