Dynamical Evolution and Stability Maps of the Proxima Centauri System 3
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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. -
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). -
FIXED STARS a SOLAR WRITER REPORT for Churchill Winston WRITTEN by DIANA K ROSENBERG Page 2
FIXED STARS A SOLAR WRITER REPORT for Churchill Winston WRITTEN BY DIANA K ROSENBERG Page 2 Prepared by Cafe Astrology cafeastrology.com Page 23 Churchill Winston Natal Chart Nov 30 1874 1:30 am GMT +0:00 Blenhein Castle 51°N48' 001°W22' 29°‚ 53' Tropical ƒ Placidus 02' 23° „ Ý 06° 46' Á ¿ 21° 15° Ý 06' „ 25' 23° 13' Œ À ¶29° Œ 28° … „ Ü É Ü 06° 36' 26' 25° 43' Œ 51'Ü áá Œ 29° ’ 29° “ àà … ‘ à ‹ – 55' á á 55' á †32' 16° 34' ¼ † 23° 51'Œ 23° ½ † 06' 25° “ ’ † Ê ’ ‹ 43' 35' 35' 06° ‡ Š 17° 43' Œ 09° º ˆ 01' 01' 07° ˆ ‰ ¾ 23° 22° 08° 02' ‡ ¸ Š 46' » Ï 06° 29°ˆ 53' ‰ Page 234 Astrological Summary Chart Point Positions: Churchill Winston Planet Sign Position House Comment The Moon Leo 29°Le36' 11th The Sun Sagittarius 7°Sg43' 3rd Mercury Scorpio 17°Sc35' 2nd Venus Sagittarius 22°Sg01' 3rd Mars Libra 16°Li32' 1st Jupiter Libra 23°Li34' 1st Saturn Aquarius 9°Aq35' 5th Uranus Leo 15°Le13' 11th Neptune Aries 28°Ar26' 8th Pluto Taurus 21°Ta25' 8th The North Node Aries 25°Ar51' 8th The South Node Libra 25°Li51' 2nd The Ascendant Virgo 29°Vi55' 1st The Midheaven Gemini 29°Ge53' 10th The Part of Fortune Capricorn 8°Cp01' 4th Chart Point Aspects Planet Aspect Planet Orb App/Sep The Moon Semisquare Mars 1°56' Applying The Moon Trine Neptune 1°10' Separating The Moon Trine The North Node 3°45' Separating The Moon Sextile The Midheaven 0°17' Applying The Sun Semisquare Jupiter 0°50' Applying The Sun Sextile Saturn 1°52' Applying The Sun Trine Uranus 7°30' Applying Mercury Square Uranus 2°21' Separating Mercury Opposition Pluto 3°49' Applying Venus Sextile -
Binocular Double Star Logbook
Astronomical League Binocular Double Star Club Logbook 1 Table of Contents Alpha Cassiopeiae 3 14 Canis Minoris Sh 251 (Oph) Psi 1 Piscium* F Hydrae Psi 1 & 2 Draconis* 37 Ceti Iota Cancri* 10 Σ2273 (Dra) Phi Cassiopeiae 27 Hydrae 40 & 41 Draconis* 93 (Rho) & 94 Piscium Tau 1 Hydrae 67 Ophiuchi 17 Chi Ceti 35 & 36 (Zeta) Leonis 39 Draconis 56 Andromedae 4 42 Leonis Minoris Epsilon 1 & 2 Lyrae* (U) 14 Arietis Σ1474 (Hya) Zeta 1 & 2 Lyrae* 59 Andromedae Alpha Ursae Majoris 11 Beta Lyrae* 15 Trianguli Delta Leonis Delta 1 & 2 Lyrae 33 Arietis 83 Leonis Theta Serpentis* 18 19 Tauri Tau Leonis 15 Aquilae 21 & 22 Tauri 5 93 Leonis OΣΣ178 (Aql) Eta Tauri 65 Ursae Majoris 28 Aquilae Phi Tauri 67 Ursae Majoris 12 6 (Alpha) & 8 Vul 62 Tauri 12 Comae Berenices Beta Cygni* Kappa 1 & 2 Tauri 17 Comae Berenices Epsilon Sagittae 19 Theta 1 & 2 Tauri 5 (Kappa) & 6 Draconis 54 Sagittarii 57 Persei 6 32 Camelopardalis* 16 Cygni 88 Tauri Σ1740 (Vir) 57 Aquilae Sigma 1 & 2 Tauri 79 (Zeta) & 80 Ursae Maj* 13 15 Sagittae Tau Tauri 70 Virginis Theta Sagittae 62 Eridani Iota Bootis* O1 (30 & 31) Cyg* 20 Beta Camelopardalis Σ1850 (Boo) 29 Cygni 11 & 12 Camelopardalis 7 Alpha Librae* Alpha 1 & 2 Capricorni* Delta Orionis* Delta Bootis* Beta 1 & 2 Capricorni* 42 & 45 Orionis Mu 1 & 2 Bootis* 14 75 Draconis Theta 2 Orionis* Omega 1 & 2 Scorpii Rho Capricorni Gamma Leporis* Kappa Herculis Omicron Capricorni 21 35 Camelopardalis ?? Nu Scorpii S 752 (Delphinus) 5 Lyncis 8 Nu 1 & 2 Coronae Borealis 48 Cygni Nu Geminorum Rho Ophiuchi 61 Cygni* 20 Geminorum 16 & 17 Draconis* 15 5 (Gamma) & 6 Equulei Zeta Geminorum 36 & 37 Herculis 79 Cygni h 3945 (CMa) Mu 1 & 2 Scorpii Mu Cygni 22 19 Lyncis* Zeta 1 & 2 Scorpii Epsilon Pegasi* Eta Canis Majoris 9 Σ133 (Her) Pi 1 & 2 Pegasi Δ 47 (CMa) 36 Ophiuchi* 33 Pegasi 64 & 65 Geminorum Nu 1 & 2 Draconis* 16 35 Pegasi Knt 4 (Pup) 53 Ophiuchi Delta Cephei* (U) The 28 stars with asterisks are also required for the regular AL Double Star Club. -
ASTR-1020: Astronomy II Course Lecture Notes Section V
ASTR-1020: Astronomy II Course Lecture Notes Section V Dr. Donald G. Luttermoser East Tennessee State University Edition 4.0 Abstract These class notes are designed for use of the instructor and students of the course ASTR-1020: Astronomy II at East Tennessee State University. Donald G. Luttermoser, ETSU V–1 V. Stellar Evolution: Birth A. Cloud contraction. 1. GMCs are usually in hydrostatic equilibrium unless some event occurs to cause a cloud to exceed its Jeans’ mass (MJ) and/or Jeans’ length, which is a gravitational stability criterion first derived by British physicist Sir James Jeans in the 1930s. What is the trigger? Any process that can cause a stable (M< MJ ) cloudlet to become unstable (M>MJ ). a) Agglomeration: Component cloudlets of GMC’s col- lide and sometime coalesce until M>MJ. b) Shock Wave Compression: A shock can be the trigger =⇒ it acts like a snow plow causing density to increase, and as a result, MJ drops. i) Spiral Density Wave: As Milky Way Galaxy rotates, its two spiral arms can compress a GMC, which then leads to star formation. ii) Ionization Front: O & B stars form very quickly once cloud collapse has started (see below). These produce H II regions from their strong ionizing UV flux, which initially expand outward away from the OB association. This ionization front heats the gas causing a shock to form. The shock can compress the gas such that M>MJ , which once again, leads to star formation. iii) Supernova Shocks: O & B stars evolve very quickly on the main sequence and die explosively V–2 ASTR-1020: Astronomy II as supernovae. -
00E the Construction of the Universe Symphony
The basic construction of the Universe Symphony. There are 30 asterisms (Suites) in the Universe Symphony. I divided the asterisms into 15 groups. The asterisms in the same group, lay close to each other. Asterisms!! in Constellation!Stars!Objects nearby 01 The W!!!Cassiopeia!!Segin !!!!!!!Ruchbah !!!!!!!Marj !!!!!!!Schedar !!!!!!!Caph !!!!!!!!!Sailboat Cluster !!!!!!!!!Gamma Cassiopeia Nebula !!!!!!!!!NGC 129 !!!!!!!!!M 103 !!!!!!!!!NGC 637 !!!!!!!!!NGC 654 !!!!!!!!!NGC 659 !!!!!!!!!PacMan Nebula !!!!!!!!!Owl Cluster !!!!!!!!!NGC 663 Asterisms!! in Constellation!Stars!!Objects nearby 02 Northern Fly!!Aries!!!41 Arietis !!!!!!!39 Arietis!!! !!!!!!!35 Arietis !!!!!!!!!!NGC 1056 02 Whale’s Head!!Cetus!! ! Menkar !!!!!!!Lambda Ceti! !!!!!!!Mu Ceti !!!!!!!Xi2 Ceti !!!!!!!Kaffalijidhma !!!!!!!!!!IC 302 !!!!!!!!!!NGC 990 !!!!!!!!!!NGC 1024 !!!!!!!!!!NGC 1026 !!!!!!!!!!NGC 1070 !!!!!!!!!!NGC 1085 !!!!!!!!!!NGC 1107 !!!!!!!!!!NGC 1137 !!!!!!!!!!NGC 1143 !!!!!!!!!!NGC 1144 !!!!!!!!!!NGC 1153 Asterisms!! in Constellation Stars!!Objects nearby 03 Hyades!!!Taurus! Aldebaran !!!!!! Theta 2 Tauri !!!!!! Gamma Tauri !!!!!! Delta 1 Tauri !!!!!! Epsilon Tauri !!!!!!!!!Struve’s Lost Nebula !!!!!!!!!Hind’s Variable Nebula !!!!!!!!!IC 374 03 Kids!!!Auriga! Almaaz !!!!!! Hoedus II !!!!!! Hoedus I !!!!!!!!!The Kite Cluster !!!!!!!!!IC 397 03 Pleiades!! ! Taurus! Pleione (Seven Sisters)!! ! ! Atlas !!!!!! Alcyone !!!!!! Merope !!!!!! Electra !!!!!! Celaeno !!!!!! Taygeta !!!!!! Asterope !!!!!! Maia !!!!!!!!!Maia Nebula !!!!!!!!!Merope Nebula !!!!!!!!!Merope -
Astronomical Coordinate Systems
Appendix 1 Astronomical Coordinate Systems A basic requirement for studying the heavens is being able to determine where in the sky things are located. To specify sky positions, astronomers have developed several coordinate systems. Each sys- tem uses a coordinate grid projected on the celestial sphere, which is similar to the geographic coor- dinate 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 The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the most closely related to the geographic coordinate system because they use the same funda- mental plane and poles. The projection of the Earth’s equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles onto the celestial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate sys- tems: the geographic system is fixed to the Earth and 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 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. -
Prime Focus Hyades Cluster Starting at ~10:15 Pm EDT
Highlights of the April Sky. - - - 3rdrd - - - PM: A Waxing Crescent Moon passes through the Prime Focus Hyades cluster starting at ~10:15 pm EDT. A Publication of the Kalamazoo Astronomical Society - - - 6thth - - - November 2013 PM: Moon is near Jupiter. April 2014 - - - 7thth - - - First Quarter Moon 4:31 am EDT This Months KAS Events This Months Events - - - 8thth - - - Mars is at opposition. General Meeting: Friday, April 4 @ 7:00 pm - - - 10thth - - - PM: The Moon is below Kalamazoo Area Math & Science Center - See Page 8 for Details Regulus - - - 12thth - - - Observing Session: Saturday, April 5 @ 8:00 pm DAWN: Neptune is 0.7º south of Venus. Moon, Mars & Jupiter - Kalamazoo Nature Center - - - 14thth - - - PM: Mars is closest to Observing Event: Tuesday, April 15 @ 12:30 am Earth for 2014. Total Lunar Eclipse - Kalamazoo Nature Center - - - 15thth - - - Total Lunar Eclipse begins at 1:58 am EDT Observing Session: Saturday, April 26 @ 8:00 pm Full Moon Galaxies of the Virgo Cluster - Kalamazoo Nature Center 3:42 am EDT - - - 17thth - - - DAWN: Saturn is very close to the Moon. InsideInside thethe Newsletter.Newsletter. .. .. - - - 22nd - - - AM: Lyrid meteor shower March Meeting Minutes......................... p. 2 peaks. Last Quarter Moon Board Meeting Minutes......................... p. 3 3:52 am EDT Observations........................................... p. 3 - - - 25thth - - - DAWN: A Waning Crescent NASA Space Place.................................. p. 4 Moon is to the upper right of Venus. Membership of the KAS........................p. 5 - - - 26thth - - - April Night Sky........................................ p. 6 DAWN: A Waning Crescent Moon is to the lower left of KAS Board & Announcements............ p. 7 Venus. General Meeting Preview..................... p. 8 - - - 29thth - - - New Moon 2:14 am EDT www.kasonline.org MarchMarch MeetingMeeting MinutesMinutes The general meeting of the Kalamazoo Astronomical Society in the sky during the winter and lowest in the sky during the was brought to order by President Richard Bell on Friday, summer. -
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A&A 397, 693–710 (2003) Astronomy DOI: 10.1051/0004-6361:20021545 & c ESO 2003 Astrophysics Near-IR echelle spectroscopy of Class I protostars: Mapping Forbidden Emission-Line (FEL) regions in [FeII] C. J. Davis1,E.Whelan2,T.P.Ray2, and A. Chrysostomou3 1 Joint Astronomy Centre, 660 North A’oh¯ok¯u Place, University Park, Hilo, Hawaii 96720, USA 2 Dublin Institute for Advanced Studies, School of Cosmic Physics, 5 Merrion Square, Dublin 2, Ireland 3 Department of Physical Sciences, University of Hertfordshire, Hatfield, Herts AL10 9AB, UK Received 27 August 2002 / Accepted 22 October 2002 Abstract. Near-IR echelle spectra in [FeII] 1.644 µm emission trace Forbidden Emission Line (FEL) regions towards seven Class I HH energy sources (SVS 13, B5-IRS1, IRAS 04239+2436, L1551-IRS5, HH 34-IRS, HH 72-IRS and HH 379-IRS) and three classical T Tauri stars (AS 353A, DG Tau and RW Aur). The parameters of these FEL regions are compared to the characteristics of the Molecular Hydrogen Emission Line (MHEL) regions recently discovered towards the same outflow sources (Davis et al. 2001 – Paper I). The [FeII] and H2 lines both trace emission from the base of a large-scale collimated outflow, although they clearly trace different flow components. We find that the [FeII] is associated with higher-velocity gas than the H2, and that the [FeII] emission peaks further away from the embedded source in each system. This is probably because the [FeII] is more closely associated with HH-type shocks in the inner, on-axis jet regions, while the H2 may be excited along the boundary between the jet and the near-stationary, dense ambient medium that envelopes the protostar. -
The Complete the Complete Guide to Guide to Guide to Observing Observing Lunar, Grazing and Lunar, Grazing and Asteroid Occulta
The Complete Guide to Observing Lunar, Grazing and Asteroid Occultations Published by the International Occultation Timing Association Richard Nugent, Editor Copyright 2007 International Occultation Timing Association, Richard Nugent, Editor. All rights reserved. No part of this publication may be reproduced, distributed or copied in any manner without the written permission from the Editor in Chief. No part of this publication may be reproduced, stored in any retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under the 1976 United States Copyright Act and with the written permission of the Editor and Publisher. Request to the Editor should be sent via email: [email protected]. While the Editor, Authors and Publisher have made their best efforts in preparing the IOTA Occultation Manual, they make no representation or warranties with respect to the accuracy and completeness regard to its contents. The Publisher, Editor and Authors specifically disclaim any implied warranties of merchantability or fitness of the material presented herein for any purpose. The advice and strategies contained herein may not be suitable for your situation and the reader and/or user assumes full responsibility for using and attempting the methods and techniques presented. Neither the publisher nor the authors shall be liable for any loss of profit or any damages, including but not limited to special, incidental, consequential, or other damages and any loss or injury. Persons are advised that occultation observations involve substantial risk and are advised to take the necessary precautions before attempting such observations. Editor in Chief: Richard Nugent Assistant Editor: Lydia Lousteaux Contributors: Trudy E. -
Arxiv:0709.4613V2 [Astro-Ph] 16 Apr 2008 .Quirrenbach A
Astronomy and Astrophysics Review manuscript No. (will be inserted by the editor) M. S. Cunha · C. Aerts · J. Christensen-Dalsgaard · A. Baglin · L. Bigot · T. M. Brown · C. Catala · O. L. Creevey · A. Domiciano de Souza · P. Eggenberger · P. J. V. Garcia · F. Grundahl · P. Kervella · D. W. Kurtz · P. Mathias · A. Miglio · M. J. P. F. G. Monteiro · G. Perrin · F. P. Pijpers · D. Pourbaix · A. Quirrenbach · K. Rousselet-Perraut · T. C. Teixeira · F. Th´evenin · M. J. Thompson Asteroseismology and interferometry Received: date M. S. Cunha and T. C. Teixeira Centro de Astrof´ısica da Universidade do Porto, Rua das Estrelas, 4150-762, Porto, Portugal. E-mail: [email protected] C. Aerts Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, 3001 Leuven, Belgium; Afdeling Sterrenkunde, Radboud University Nijmegen, PO Box 9010, 6500 GL Nijmegen, The Netherlands. J. Christensen-Dalsgaard and F. Grundahl Institut for Fysik og Astronomi, Aarhus Universitet, Aarhus, Denmark. A. Baglin and C. Catala and P. Kervella and G. Perrin LESIA, UMR CNRS 8109, Observatoire de Paris, France. L. Bigot and F. Th´evenin Observatoire de la Cˆote d’Azur, UMR 6202, BP 4229, F-06304, Nice Cedex 4, France. T. M. Brown Las Cumbres Observatory Inc., Goleta, CA 93117, USA. arXiv:0709.4613v2 [astro-ph] 16 Apr 2008 O. L. Creevey High Altitude Observatory, National Center for Atmospheric Research, Boulder, CO 80301, USA; Instituto de Astrofsica de Canarias, Tenerife, E-38200, Spain. A. Domiciano de Souza Max-Planck-Institut f¨ur Radioastronomie, Auf dem H¨ugel 69, 53121 Bonn, Ger- many. P. Eggenberger Observatoire de Gen`eve, 51 chemin des Maillettes, 1290 Sauverny, Switzerland; In- stitut d’Astrophysique et de G´eophysique de l’Universit´e de Li`ege All´ee du 6 Aoˆut, 17 B-4000 Li`ege, Belgium. -
I N S I D E T H I S I S S
February / février 2008 Volume/volume 102 Number/numéro 1 [728] This Issue's Winning Astrophoto! FEATURING A FULL COLOUR SECTION! The Journal of the Royal Astronomical Society of Canada Cassiopeia Rising Over the Plaskett by Charles Banville, Victoria Centre. This is a montage of two pictures I took using a Canon 20Da and a Canon EF 17-40mm f/4L lens. The foreground image was acquired at the Dominion Astrophysical Observatory in Victoria on 2007 July 26. That evening the Plaskett Dome was illuminated by a bright 12-day-old Moon. The star trails were created using 87 light frames of 1 minute each taken from Cattle Point on 2007 August 8. Le Journal de la Société royale d’astronomie du Canada [Editor’s Note: The two-member team of Dietmar Kupke and Paul Mortfield of the Toronto Centre selected this late-entry image from among the 30 or so entries to the “Own the Back Cover” con- test. Thanks to all the submitters. We welcome further entries, so don’t delay – send in yours now! INSIDE THIS ISSUE Watch the back cover of the April issue for the next winner.] One Hundred Editions of the Observer's Handbook · Seriously Seeking Ceres! Mont-Mégantic Dark-Sky Reserve Conference, 2007 September 19-21 Duplicity of ZC1042: My First Double-Star Discovery In Memory of Gertrude Jean Southam Building for the International Year of Astronomy (IYA2009) THE ROYAL ASTRONOMICAL SOCIETY OF CANADA February / février 2008 NATIONAL OFFICERS AND COUNCIL FOR 2007-2008/CONSEIL ET ADMINISTRATEURS NATIONAUX Honorary President Robert Garrison, Ph.D., Toronto President Scott Young, B.Sc., Winnipeg Vol.