DOCSLIB.ORG

TABLE of CONTENTS 1 Installing & Getting Started 1 Welcome!

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
TABLE of CONTENTS 1 Installing & Getting Started 1 Welcome! TABLE OF CONTENTS 1 Installing & Getting Started 1 Welcome! .......................................1 What’s New? .....................................2 Product Level .....................................6 Minimum System Requirements ...........................7 Performance ......................................7 Disclaimer .......................................8 Installing TheSky ...................................8 Removing TheSky ..................................10 Typographic Conventions ..............................10 Windows and Macintosh Conventions .......................11 Running TheSky ...................................11 Tip of the Day ....................................12 Getting Started with TheSky .............................12 Going Further ....................................14 If You Need Help... .................................14 Product Support ...................................15 2 Orienting the Virtual Sky 17 Selecting Terrestrial Coordinates ..........................17 Setting the Time and Date ..............................18 Understanding Projections .............................20 Setting the Orientation ................................22 The Look Commands ................................23 Interrupting a Screen Redraw ............................24 Undoing Changes to the Virtual Sky ........................24 3 Navigating the Virtual Sky 25 Zooming the Display .................................25 Scrolling the Display .................................28 The Move To Command ...............................29 Making It All Make Sense ..............................31 Interrupting a Screen Redraw ............................31 Undoing Changes to the Virtual Sky ........................32 4 Displaying Celestial Objects 33 Type Selection ....................................33 How TheSky Displays the Principal Catalogs ....................35 High / Medium / Low Density Display Modes ....................36 Catalog Contents ..................................36 Disclaimer ......................................38 TABLE OF CONTENTS 5 Finding and Identifying Celestial Objects 39 Identifying Objects ..................................39 Finding Objects ...................................43 6 Display Modes and Options 49 Full Screen .....................................49 Chart Mode .....................................49 Projections ......................................50 Mirror Image / Inverting the Display .........................50 Stellar Options ....................................50 Night Vision .....................................54 Halt Update .....................................54 Redraw Screen ...................................54 Update Solar System ................................55 Options .......................................55 Precessing Equatorial Coordinates .........................57 Computer Time ...................................57 Toolbars .......................................57 Tool Tips .......................................59 Object Tips .....................................59 Status Bar ......................................59 Undo .........................................60 7 Reference Lines 61 Adding Reference Lines to the Display .......................61 Field of View Indicator ................................67 8 Labels 71 Label Setup .....................................71 9 Comets, Minor Planets, and Satellites 73 Entering Orbital Elements ..............................73 Extended Minor Planet Data ............................76 Satellites .......................................77 10 Configuring TheSky with Sky Documents 79 What is a Sky Document? ..............................79 Default Configuration ................................79 Selecting a Sky Document at Startup ........................80 Loading a Different Sky Document .........................80 Creating Multiple Sky Documents ..........................80 Sky Documents Supplied with TheSky .......................81 TABLE OF CONTENTS 11 Customizing the Display with Preferences 83 The Preferences Dialog Box ............................83 Font .........................................84 Line .........................................84 Fill ..........................................85 Symbol .......................................87 Creating New Preference Files ...........................88 12 Adding User Data 89 Basics of Adding User Data .............................89 Changing the Default Data Type ..........................90 Adding Reference Points/Objects ..........................90 Adding Labels ....................................90 Adding Lines/Polygons ...............................91 Adding Ellipses ...................................93 13 Star Charts and Tables 95 Printed Charts ....................................95 Adding Star Charts to Other Documents ..................... 101 Displaying and Printing Uranometria 2000.0™ Charts .............. 102 List Creator .................................... 102 Planet Report ................................... 108 14 The Sky Database Manager 109 Specialized Databases .............................. 110 15 Custom Databases 113 Database Requirements .............................. 113 Importing Databases ............................... 114 Creating Custom Databases ........................... 117 16 Image and Multimedia Databases 129 Activating Additional Image Databases ...................... 129 Displaying Pictures ................................ 130 Creating Your Own Image Databases ....................... 132 Associating Sounds with Events in TheSky .................... 135 17 Image Link Overlays 137 Inserting the Image to be Linked ......................... 137 Aligning Automatically with the Link Wizard .................... 138 Aligning Manually with Object Dragging ...................... 142 Creating an Automatically Linked DSS Image .................. 143 Attaching an OLE Object to the Virtual Sky .................... 144 TABLE OF CONTENTS 18 Time Skip Animation 147 Orientation and Animation ............................. 147 Setting Up a Simulation .............................. 148 Running the Simulation .............................. 150 Time Skip Examples ................................ 152 Recording Time Skip Simulations ......................... 154 Using the Time Skip Controls with the Virtual Sky ................ 154 Creating and Playing Movies ........................... 154 19 Simulations and Tools 157 3D Solar System View ............................... 157 Daytime Sky Mode ................................ 160 Eclipse Finder and Simulator ........................... 161 Jupiter’s and Saturn’s Moons ........................... 162 Saturn’s Rings ................................... 163 Moon Phase Calendar ............................... 163 20 Linking Your Telescope with TheSky 165 Introduction .................................... 165 Setting Up and Using Optical Encoder Systems ................. 166 Setting Up and Using a Meade LX200 ...................... 172 Setting Up and Using the Quadrant Systems Coordinate III ........... 176 Troubleshooting .................................. 178 Using the Link Simulator ............................. 180 Digital Setting Circles ............................... 180 Mosaic Command ................................. 181 Using the Telescopes in Education Network ................... 182 Using Astronomy Command Language ...................... 182 Using the Paramount GT-1100 Drive System ................... 182 A Database Locations and Errors 183 Database Locations ................................ 183 Missing or Anomalous GSC Data ......................... 183 B Reference Data 185 Common Star Names ............................... 185 Common NGC Objects .............................. 186 Spectral Classes ................................. 186 Constellation Abbreviations ............................ 187 Dreyer Abbreviations ............................... 188 Object-Type Index Numbers ........................... 190 C Function & Accelerator Keys 191 1 Installing & Getting Started Welcome! Thank you for purchasing TheSky™. No other astronomy software offers as much power, versatility and expandability. Whether you’re a novice or an experienced observer, TheSky has many features to increase the enjoyment of your hobby. ● Access the Hipparcos and Tycho catalogs. These data for 1.1 million stars (Tycho) and 118,000 stars (Hipparcos) are the primary databases for the Virtual Sky. They fix “messy” entries in the GSC and are invaluable for CCD astrometry. ● Explore the Hubble Guide Star Catalog (GSC). With 15 million stellar and 4 million non-stellar objects, data on over 70,000 galaxies, 12,000 double stars, 28,000 variable stars, and thousands of nebulae, clusters, and other objects, it’s not “billions and billions,” but more than can be explored in one lifetime. ● Plan a viewing session. Select the objects you intend to view, then print detailed star charts for those sections of the sky. ● View simulations of astronomical events. Watch a Solar or Lunar eclipse. View the Solar System as a passing comet sees it. Predict when a minor planet will occult a star. Preview the positions of Jupiter’s and Saturn’s largest moons and Saturn’s rings. Display a chart of the Moon’s phases for any month of any year. ● Control your telescope. Connect an automated telescope to your computer (desktop or notebook) and let TheSky control it. ● Create custom databases. TheSky’s database compiler can assemble almost any kind of astronomical
Load more

Recommended publications
  • Ioptron AZ Mount Pro Altazimuth Mount Instruction
    ® iOptron® AZ Mount ProTM Altazimuth Mount Instruction Manual Product #8900, #8903 and #8920 This product is a precision instrument. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount. If you have any questions please contact us at [email protected] WARNING! NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER! Looking at or near the Sun will cause instant and irreversible damage to your eye. Children should always have adult supervision while observing. 2 Table of Content Table of Content ......................................................................................................................................... 3 1. AZ Mount ProTM Altazimuth Mount Overview...................................................................................... 5 2. AZ Mount ProTM Mount Assembly ........................................................................................................ 6 2.1. Parts List .......................................................................................................................................... 6 2.2. Identification of Parts ....................................................................................................................... 7 2.3. Go2Nova® 8407 Hand Controller .................................................................................................... 8 2.3.1. Key Description .......................................................................................................................
    [Show full text]
  • MAS Mentoring Project Overview 2020
    Macarthur Astronomical Society Student Projects in Astronomy A Guide of Teachers and Mentors 2020 (c) Macarthur Astronomical Society, 2020 DRAFT The following Project Overviews are based on those suggested by Dr Rahmi Jackson of Broughton Anglican College. The Focus Questions and Issues section should be used by teachers and mentors to guide students in formulating their own questions about the topic. References to the NSW 7-10 Science Syllabus have been included. Note that only those sections relevant are included. For example, subsections a and d may be used, but subsections b and c are omitted as they do not relate to this topic. A generic risk assessment is provided, but schools should ensure that it aligns with school- based policies. MAS Student Projects in Astronomy page 1 Project overviews Semester 1, 2020: Project Stage Technical difficulty 4 5 6 1 The Moons of Jupiter X X X Moderate to high (extension) NOT available Semester 1 2 Astrophotography X X X Moderate to high 3 Light pollution X X Moderate 4 Variable stars X X Moderate to high 5 Spectroscopy X X High 6 A changing lunarscape X X Low to moderate Recommended project 7 Magnitude of stars X X Moderate to high Recommended for technically able students 8 A survey of southern skies X X Low to moderate 9 Double Stars X X Moderate to high 10 The Phases of the Moon X X Low to moderate Recommended project 11 Observing the Sun X X Moderate MAS Student Projects in Astronomy page 2 Project overviews Semester 2, 2020: Project Stage Technical difficulty 4 5 6 1 The Moons of Jupiter
    [Show full text]
  • THE CONSTELLATION MUSCA, the FLY Musca Australis (Latin: Southern Fly) Is a Small Constellation in the Deep Southern Sky
    THE CONSTELLATION MUSCA, THE FLY Musca Australis (Latin: Southern Fly) is a small constellation in the deep southern sky. It was one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm diameter celestial globe published in 1597 in Amsterdam by Plancius and Jodocus Hondius. The first depiction of this constellation in a celestial atlas was in Johann Bayer's Uranometria of 1603. It was also known as Apis (Latin: bee) for two hundred years. Musca remains below the horizon for most Northern Hemisphere observers. Also known as the Southern or Indian Fly, the French Mouche Australe ou Indienne, the German Südliche Fliege, and the Italian Mosca Australe, it lies partly in the Milky Way, south of Crux and east of the Chamaeleon. De Houtman included it in his southern star catalogue in 1598 under the Dutch name De Vlieghe, ‘The Fly’ This title generally is supposed to have been substituted by La Caille, about 1752, for Bayer's Apis, the Bee; but Halley, in 1679, had called it Musca Apis; and even previous to him, Riccioli catalogued it as Apis seu Musca. Even in our day the idea of a Bee prevails, for Stieler's Planisphere of 1872 has Biene, and an alternative title in France is Abeille. When the Northern Fly was merged with Aries by the International Astronomical Union (IAU) in 1929, Musca Australis was given its modern shortened name Musca. It is the only official constellation depicting an insect. Julius Schiller, who redrew and named all the 88 constellations united Musca with the Bird of Paradise and the Chamaeleon as mother Eve.
    [Show full text]
  • 407 a Abell Galaxy Cluster S 373 (AGC S 373) , 351–353 Achromat
    Index A Barnard 72 , 210–211 Abell Galaxy Cluster S 373 (AGC S 373) , Barnard, E.E. , 5, 389 351–353 Barnard’s loop , 5–8 Achromat , 365 Barred-ring spiral galaxy , 235 Adaptive optics (AO) , 377, 378 Barred spiral galaxy , 146, 263, 295, 345, 354 AGC S 373. See Abell Galaxy Cluster Bean Nebulae , 303–305 S 373 (AGC S 373) Bernes 145 , 132, 138, 139 Alnitak , 11 Bernes 157 , 224–226 Alpha Centauri , 129, 151 Beta Centauri , 134, 156 Angular diameter , 364 Beta Chamaeleontis , 269, 275 Antares , 129, 169, 195, 230 Beta Crucis , 137 Anteater Nebula , 184, 222–226 Beta Orionis , 18 Antennae galaxies , 114–115 Bias frames , 393, 398 Antlia , 104, 108, 116 Binning , 391, 392, 398, 404 Apochromat , 365 Black Arrow Cluster , 73, 93, 94 Apus , 240, 248 Blue Straggler Cluster , 169, 170 Aquarius , 339, 342 Bok, B. , 151 Ara , 163, 169, 181, 230 Bok Globules , 98, 216, 269 Arcminutes (arcmins) , 288, 383, 384 Box Nebula , 132, 147, 149 Arcseconds (arcsecs) , 364, 370, 371, 397 Bug Nebula , 184, 190, 192 Arditti, D. , 382 Butterfl y Cluster , 184, 204–205 Arp 245 , 105–106 Bypass (VSNR) , 34, 38, 42–44 AstroArt , 396, 406 Autoguider , 370, 371, 376, 377, 388, 389, 396 Autoguiding , 370, 376–378, 380, 388, 389 C Caldwell Catalogue , 241 Calibration frames , 392–394, 396, B 398–399 B 257 , 198 Camera cool down , 386–387 Barnard 33 , 11–14 Campbell, C.T. , 151 Barnard 47 , 195–197 Canes Venatici , 357 Barnard 51 , 195–197 Canis Major , 4, 17, 21 S. Chadwick and I. Cooper, Imaging the Southern Sky: An Amateur Astronomer’s Guide, 407 Patrick Moore’s Practical
    [Show full text]
  • Atlas Menor Was Objects to Slowly Change Over Time
    C h a r t Atlas Charts s O b by j Objects e c t Constellation s Objects by Number 64 Objects by Type 71 Objects by Name 76 Messier Objects 78 Caldwell Objects 81 Orion & Stars by Name 84 Lepus, circa , Brightest Stars 86 1720 , Closest Stars 87 Mythology 88 Bimonthly Sky Charts 92 Meteor Showers 105 Sun, Moon and Planets 106 Observing Considerations 113 Expanded Glossary 115 Th e 88 Constellations, plus 126 Chart Reference BACK PAGE Introduction he night sky was charted by western civilization a few thou - N 1,370 deep sky objects and 360 double stars (two stars—one sands years ago to bring order to the random splatter of stars, often orbits the other) plotted with observing information for T and in the hopes, as a piece of the puzzle, to help “understand” every object. the forces of nature. The stars and their constellations were imbued with N Inclusion of many “famous” celestial objects, even though the beliefs of those times, which have become mythology. they are beyond the reach of a 6 to 8-inch diameter telescope. The oldest known celestial atlas is in the book, Almagest , by N Expanded glossary to define and/or explain terms and Claudius Ptolemy, a Greco-Egyptian with Roman citizenship who lived concepts. in Alexandria from 90 to 160 AD. The Almagest is the earliest surviving astronomical treatise—a 600-page tome. The star charts are in tabular N Black stars on a white background, a preferred format for star form, by constellation, and the locations of the stars are described by charts.
    [Show full text]
  • Bibliography from ADS File: Vitense.Bib August 16, 2021 1
    Bibliography from ADS file: vitense.bib Böhm-Vitense, E., “A dip in the CaII H and K emission line fluxes for Hyades F August 16, 2021 stars.”, 1995A&A...297L..25B ADS Böhm-Vitense, E.: 1995d, Studies with IUE spectra: Stellar chromo- spheres and transition layers, and Cepheid Binaries, Technical Report Böhm-Vitense, E. & Davenport, J. R. A., “The Number of Rotations per Stellar 1995wub..rept.....B ADS Activity Cycle in G and K Main Sequence Stars”, 2011ASPC..448.1077B Wallerstein, G., Böhm-Vitense, E., Vanture, A. D., & Gonzalez, G., “The ADS Lithium Content and Other Properties of F2-G5 Giants in the Hertzsprung Böhm-Vitense, E., “Hyades Morphology and Star Formation”, Gap”, 1994AJ....107.2211W ADS 2007AJ....133.1903B ADS Böhm-Vitense, E., “The Two period-Luminosity Relations for Population I Böhm-Vitense, E., “Chromospheric Activity in G and K Main-Sequence Stars, Cepheids”, 1994AJ....107..673B ADS and What It Tells Us about Stellar Dynamos”, 2007ApJ...657..486B Böhm-Vitense, E.: 1994b, Cepheid Masses - Cyc 4 High - Part 2, HST Proposal ADS 1994hst..prop.5673B ADS Böhm-Vitense, E., “The Puzzle of the Metallic Line Stars”, Böhm-Vitense, E.: 1994c, Cepheid Masses -CYC4-HIGH, HST Proposal 2006PASP..118..419B ADS 1994hst..prop.5357B ADS Böhm-Vitense, E., “Rotation and Lithium Surface Abundances, Revisited”, Böhm-Vitense, E. & Love, S. G., “Emission Lines in the Long-Period Cepheid 2004AJ....128.2435B ADS L Carinae”, 1994ApJ...420..401B ADS Böhm-Vitense, E., Robinson, R. D., & Carpenter, K. G., “The O VI and C III Böhm-Vitense, E., “Silicon
    [Show full text]
  • Index to JRASC Volumes 61-90 (PDF)
    THE ROYAL ASTRONOMICAL SOCIETY OF CANADA GENERAL INDEX to the JOURNAL 1967–1996 Volumes 61 to 90 inclusive (including the NATIONAL NEWSLETTER, NATIONAL NEWSLETTER/BULLETIN, and BULLETIN) Compiled by Beverly Miskolczi and David Turner* * Editor of the Journal 1994–2000 Layout and Production by David Lane Published by and Copyright 2002 by The Royal Astronomical Society of Canada 136 Dupont Street Toronto, Ontario, M5R 1V2 Canada www.rasc.ca — [email protected] Table of Contents Preface ....................................................................................2 Volume Number Reference ...................................................3 Subject Index Reference ........................................................4 Subject Index ..........................................................................7 Author Index ..................................................................... 121 Abstracts of Papers Presented at Annual Meetings of the National Committee for Canada of the I.A.U. (1967–1970) and Canadian Astronomical Society (1971–1996) .......................................................................168 Abstracts of Papers Presented at the Annual General Assembly of the Royal Astronomical Society of Canada (1969–1996) ...........................................................207 JRASC Index (1967-1996) Page 1 PREFACE The last cumulative Index to the Journal, published in 1971, was compiled by Ruth J. Northcott and assembled for publication by Helen Sawyer Hogg. It included all articles published in the Journal during the interval 1932–1966, Volumes 26–60. In the intervening years the Journal has undergone a variety of changes. In 1970 the National Newsletter was published along with the Journal, being bound with the regular pages of the Journal. In 1978 the National Newsletter was physically separated but still included with the Journal, and in 1989 it became simply the Newsletter/Bulletin and in 1991 the Bulletin. That continued until the eventual merger of the two publications into the new Journal in 1997.
    [Show full text]
  • Final Report the Goddard High Resolution Spectrograph Scientific
    NASA-CR-204980 Final Report The Goddard High Resolution Spectrograph Scientific Support Contract NAS5-32494 December 13, 1993 - December 12, 1996 Computer Sciences Corporation 4061 Powder Mill Road Calverton, MD 20705 GHRS SSC Final Report i Contents List of Acronyms iv I. Introduction II. Summary of Activities 4 1 Project Support - Subtask 1 4 1.1 Proposal Preparation and Tracking ..................... 4 1.2 SMOV and Post-COSTAR Calibration ................... 5 1.3 In-Orbit Performance Papers ........................ 7 1.4 Operations Studies .............................. 7 1.4.1 GHRS Efficiency ........................... 7 1.4.2 GHRS Low-Noise Orbits ....................... 8 1.5 Meetings and Information Distribution ................... 9 1.6 Public Information .............................. 9 1.7 The World Wide Web ............................ 10 1.8 The GHRS Science Symposium ....................... 11 2 Data Analysis Facility - Subtask 2 12 2.1 Facility Management ............................. 12 2.2 GHRS Archive ................................ 13 2.3 GHRS Team Software ............................ 15 2.4 General Software Support .......................... 15 2.5 Data Bases .................................. 16 2.6 Data Reduction and Analysis Assistance .................. 17 3 Extragalactic Imagery- Subtask 3 17 3.1 Analysis of R136 ............................... 17 3.2 Eta Carinae .................................. 19 3.3 Star Clusters in M33 ............................. 19 3.3.1 NGC 595 ............................... 20 3.3,2
    [Show full text]
  • Noao Annual Report Fy07
    AURA/NOAO ANNUAL REPORT FY 2007 Submitted to the National Science Foundation September 30, 2007 Revised as Final and Submitted January 30, 2008 Emission nebula NGC6334 (Cat’s Paw Nebula): star-forming region in the constellation Scorpius. This 2007 image was taken using the Mosaic-2 imager on the Blanco 4-meter telescope at Cerro Tololo Inter- American Observatory. Intervening dust in the plane of the Milky Way galaxy reddens the colors of the nebula. Image credit: T.A. Rector/University of Alaska Anchorage, T. Abbott and NOAO/AURA/NSF NATIONAL OPTICAL ASTRONOMY OBSERVATORY NOAO ANNUAL REPORT FY 2007 Submitted to the National Science Foundation September 30, 2007 Revised as Final and Submitted January 30, 2008 TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................................................................. 1 1 SCIENTIFIC ACTIVITIES AND FINDINGS ..................................................................................... 2 1.1 NOAO Gemini Science Center .............................................................................. 2 GNIRS Infrared Spectroscopy and the Origins of the Peculiar Hydrogen-Deficient Stars...................... 2 Supermassive Black Hole Growth and Chemical Enrichment in the Early Universe.............................. 4 1.2 Cerro Tololo Inter-American Observatory (CTIO)................................................ 5 The Nearest Stars.......................................................................................................................................
    [Show full text]
  • Revista Astronômica
    REVISTA ASTRONÔMICA ABRIL 1997 ‘ N°255 **255 , A bril dc 1997 \<. ISSN IMI44-9253 REGISTRO ,\ACIONAI. DE LA REVISTA PROPIF.DAD INTELECTUAL V 713.154 I .i Dirccción dc Ia Revista no sc responsabiliza por Ias opiniono vertidas por los autores dc los articul«>s publicados 0 ASTRONÔMICA \ por los dalos contcnidos cn ellds. Av Patrícias Argentinas 550. 1405 Buenos i ‘ h Airc.v. Argentina O ir c c íiím postal C C 369. Correo Central. Fundador: CARLOS CARDALDA lOOOÜucnús Aires. Argentina e-mnil revaM «iu aa org:ár Organo de Ia Asociación Argentina DIKKIOK: Amigos de Ia Astronomia lo g . A ristia n R u s q u e lla s Entídad Sin fines dc lucro cop pcrsoncria jurídica por decreto dc M aço 12 dc 1937. inscripta cort cl S K RETARIOS DE REDACCTÕN: numero C/1.H12 Incluidacn cl Registro Nacional de Entidades dc Bien Público çon el.N* (jl24 Ing Carlos I Angucira Vézquc/ RI: V IST A A STRO N Ô M IC A es marca registrada dc In Asociaciim Argentina Amigos de !a Astrono­ S t Roberto Miickintosh m ia S r C iustnvo l>. R o d rig u c / SE( C TO N ES M J AS: Observatório: Ing, Carlos I. Angueira V a / q u e / Óptica: Sr Rodolfo Caprio SUMARIO Rxdioastronomía: Ing Jesus l.òpc/ Educaciún: Sr AJejandm I Blain CÚMULOS GLOBULARES (PARTE I)...........................3 EOIOGKAEÍA: DESDE EL ANTEOJO ASTRONÔMICO HASTA Sr Alcjondro I. Blain D l A G R A M \< I Ó N : ROEMER.................................................................... 10 Ine ( nstian Rusqucllas BREVE GUÍA DE LAS CONSTELACIONES 11 ( O RR K Í IÓN: ...............
    [Show full text]
  • A Spectroscopic and Dynamical Study of Binary and Other Cepheids
    A spectroscopic and dynamical study of binary and other Cepheids |||||||||||||||||||| A thesis submitted in partial fulfillment of the requirements for the Degree of Doctor of Philosophy in Astronomy in the University of Canterbury by Orlon K. L. Petterson |||||||||{ University of Canterbury 2002 Abstract High resolution observations have been made of a number of southern Cepheids to make an observational and theoretical study of Cepheid variables using radial velocities. The stars studied were part of a long term programme to observe southern variable stars, from which a valuable database of radial velocities gathered over a long period were available. Sixteen ´echelle spectrograph orders in the wavelength region 5400{8600A˚ were used, which included a number of absorption lines covering a range of species and excitation potentials. The line bisector technique was used to measure stellar and telluric lines and to obtain radial velocities. To improve the precision of the radial velocities we used telluric lines to calibrate the observations to a common reference frame. 1 The radial velocities have a precision of 300ms− allowing the detection of velocity 1 ∼ differences of 1 km s− with confidence. The radial velocity data obtained at Mount ∼ John University Observatory (MJUO) was combined with data from various sources to determine the orbits of any Cepheids exhibiting orbital motion. The various orbital parameters were determined for a number of systems and where radial velocities for the companions exist, some estimate of the mass was made. The precision of the radial velocities obtained from MJUO also allowed us to search for line level effects for a number of species among the Cepheid spectra.
    [Show full text]
  • Doktori Disszertacio
    Szabados L´aszl´o Uj´ aspektusok a klasszikus cefeid´ak id˝obeli v´altoz´asainak vizsg´alat´aban Ertekez´es´ az MTA doktora c´ım megszerz´es´e´ert Budapest, 1997 Sz¨uleim eml´ek´enek Tartalomjegyz´ek 1. Bevezet´es ....................................... ......................... 1 2. A cefeid´ak – helyzetk´ep J.D. 2 450 000 epoch´ara . ................... 4 2.1 A helyzetk´ep el´e................................ ................... 4 2.2 Megfigyel´esi adatok .............................. .................. 4 2.3 A cefeid´akkal kapcsolatos kutat´asok kiemelked˝oeredm´enyei . 6 2.4 A k¨ozelj¨ov˝ore vonatkoz´okil´at´asok . ..................... 13 3. A stacion´arius pulz´aci´ob´ol meghat´arozhat´omennyis´egek ´es tulajdons´agok 14 3.1 A stacion´arius pulz´aci´o´es a cefeid´ak ´allapotjelz˝oi................... 14 3.2 A f´azisg¨orb´ek Fourier-felbont´asa ´es az s-cefeid´ak.................... 18 4. Eredm´enyek a pulz´aci´os amplit´ud´ovizsg´alata alapj´an .................... 21 4.1 Az amplit´ud´ok peri´odusf¨ugg´ese . .................... 21 4.2 Az amplit´ud´ok ar´any´anak vizsg´alata . ................... 27 4.3 A k´etm´odus´ucefeid´ak amplit´ud´oir´ol . ..................... 33 5. A cefeid´ak kett˝oss´eg´evel kapcsolatos ´uj eredm´enyek ...................... 41 5.1 A kett˝oscsillagok el˝ofordul´asi gyakoris´aga a cefeid´ak k¨oz¨ott......... 41 5.2 Ujabb´ spektroszk´opiai kett˝os¨ok kimutat´asa . ............... 43 5.3 K´ıs´er˝ocsillag kimutat´asa IUE-sz´ınk´epek alapj´an ................... 47 5.4 A k´ıs´er˝ocsillag hat´asa a cefeida pulz´aci´os peri´odus´ara ............
    [Show full text]