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SPACE NEWS Previous Page | Contents | Zoom in | Zoom out | Front Cover | Search Issue | Next Page BEF Mags INTERNATIONAL
Contents | Zoom in | Zoom out For navigation instructions please click here Search Issue | Next Page SPACEAPRIL 19, 2010 NEWSAN IMAGINOVA CORP. NEWSPAPER INTERNATIONAL www.spacenews.com VOLUME 21 ISSUE 16 $4.95 ($7.50 Non-U.S.) PROFILE/22> GARY President’s Revised NASA Plan PAYTON Makes Room for Reworked Orion DEPUTY UNDERSECRETARY FOR SPACE PROGRAMS U.S. AIR FORCE AMY KLAMPER, COLORADO SPRINGS, Colo. .S. President Barack Obama’s revised space plan keeps Lockheed Martin working on a Ulifeboat version of a NASA crew capsule pre- INSIDE THIS ISSUE viously slated for cancellation, potentially positioning the craft to fly astronauts to the interna- tional space station and possibly beyond Earth orbit SATELLITE COMMUNICATIONS on technology demonstration jaunts the president envisions happening in the early 2020s. Firms Complain about Intelsat Practices Between pledging to choose a heavy-lift rocket Four companies that purchase satellite capacity from Intelsat are accusing the large fleet design by 2015 and directing NASA and Denver- operator of anti-competitive practices. See story, page 5 based Lockheed Martin Space Systems to produce a stripped-down version of the Orion crew capsule that would launch unmanned to the space station by Report Spotlights Closed Markets around 2013 to carry astronauts home in an emer- The office of the U.S. Trade Representative has singled out China, India and Mexico for not meet- gency, the White House hopes to address some of the ing commitments to open their domestic satellite services markets. See story, page 13 chief complaints about the plan it unveiled in Feb- ruary to abandon Orion along with the rest of NASA’s Moon-bound Constellation program. -
A Guide to Star Names, Pronunciations, and Related Constellations
Astronomy Club of Asheville 3 Feb. 2020 version Page 1 of 8 A Guide to Star Names, Pronunciations, and Related Constellations Proper Star Names: There are over 300 proper star names that are used and accepted worldwide today -- and approved by the International Astronomical Union. Most of them come from the ancient Arabic cultures, but there are many star names in common use from the Greek, the Roman, European, and other cultures as well. On the pages below you will find an alphabetical list of many, but not all, of the proper star names, their pronunciations, and related constellations. Find a list of star names by constellation at this web link. Find another list of common star names at this web link. Star Catalogs that are Currently Used by Astronomers 1. Bayer Catalog: This first widely recognized star catalog was published by German astronomer Johann Bayer in 1603. This list of naked-eye stars indexes the stars in each constellation, using the letters of the Greek alphabet, followed by the genitive form of its parent constellation's Latin name, e.g., alpha Orionis. Typically, the brightest star in each constellation received the first Greek letter (alpha), the second brightest star the second letter (beta), and on-and-on. But you will often notice that the Bayer sequencing of the bright stars in the constellations is not true to what we see and know today about their apparent brightness. Original errors in the brightness estimates, along with the brightness variability of the stars (like Betelgeuse in Orion), have caused the Bayer sequencing not to match the stellar brightness that we observe today. -
Symposium on Telescope Science
Proceedings for the 26th Annual Conference of the Society for Astronomical Sciences Symposium on Telescope Science Editors: Brian D. Warner Jerry Foote David A. Kenyon Dale Mais May 22-24, 2007 Northwoods Resort, Big Bear Lake, CA Reprints of Papers Distribution of reprints of papers by any author of a given paper, either before or after the publication of the proceedings is allowed under the following guidelines. 1. The copyright remains with the author(s). 2. Under no circumstances may anyone other than the author(s) of a paper distribute a reprint without the express written permission of all author(s) of the paper. 3. Limited excerpts may be used in a review of the reprint as long as the inclusion of the excerpts is NOT used to make or imply an endorsement by the Society for Astronomical Sciences of any product or service. Notice The preceding “Reprint of Papers” supersedes the one that appeared in the original print version Disclaimer The acceptance of a paper for the SAS proceedings can not be used to imply or infer an endorsement by the Society for Astronomical Sciences of any product, service, or method mentioned in the paper. Published by the Society for Astronomical Sciences, Inc. First printed: May 2007 ISBN: 0-9714693-6-9 Table of Contents Table of Contents PREFACE 7 CONFERENCE SPONSORS 9 Submitted Papers THE OLIN EGGEN PROJECT ARNE HENDEN 13 AMATEUR AND PROFESSIONAL ASTRONOMER COLLABORATION EXOPLANET RESEARCH PROGRAMS AND TECHNIQUES RON BISSINGER 17 EXOPLANET OBSERVING TIPS BRUCE L. GARY 23 STUDY OF CEPHEID VARIABLES AS A JOINT SPECTROSCOPY PROJECT THOMAS C. -
U.S. Naval Observatory Washington, DC 20392-5420 This Report Covers the Period July 2001 Through June Dynamical Astronomy in Order to Meet Future Needs
1 U.S. Naval Observatory Washington, DC 20392-5420 This report covers the period July 2001 through June dynamical astronomy in order to meet future needs. J. 2002. Bangert continued to serve as Department head. I. PERSONNEL A. Civilian Personnel A. Almanacs and Other Publications Marie R. Lukac retired from the Astronomical Appli- cations Department. The Nautical Almanac Office ͑NAO͒, a division of the Scott G. Crane, Lisa Nelson Moreau, Steven E. Peil, and Astronomical Applications Department ͑AA͒, is responsible Alan L. Smith joined the Time Service ͑TS͒ Department. for the printed publications of the Department. S. Howard is Phyllis Cook and Phu Mai departed. Chief of the NAO. The NAO collaborates with Her Majes- Brian Luzum and head James R. Ray left the Earth Ori- ty’s Nautical Almanac Office ͑HMNAO͒ of the United King- entation ͑EO͒ Department. dom to produce The Astronomical Almanac, The Astronomi- Ralph A. Gaume became head of the Astrometry Depart- cal Almanac Online, The Nautical Almanac, The Air ment ͑AD͒ in June 2002. Added to the staff were Trudy Almanac, and Astronomical Phenomena. The two almanac Tillman, Stephanie Potter, and Charles Crawford. In the In- offices meet twice yearly to discuss and agree upon policy, strument Shop, Tie Siemers, formerly a contractor, was hired science, and technical changes to the almanacs, especially to fulltime. Ellis R. Holdenried retired. Also departing were The Astronomical Almanac. Charles Crawford and Brian Pohl. Each almanac edition contains data for 1 year. These pub- William Ketzeback and John Horne left the Flagstaff Sta- lications are now on a well-established production schedule. -
The Origin of Nonradiative Heating/Momentum in Hot Stars
NASA Conference Publication 2358 NASA-CP-2358 19850009446 The Origin of Nonradiative Heating/Momentum in Hot Stars Proceedings of a workshop held at NASA Goddard Space Flight Center Greenbelt, Maryland June 5-7, 1984 NI_SA NASA Conference Publication 2358 The Origin of Nonradiative Heating/Momentum in Hot Stars Edited by A. B. Underhill and A. G. Michalitsianos Goddard Space Flight Center Greenbelt, Maryland Proceedings of a workshop sponsored by the National Aeronautics and Space Administration, Washington, D.C., and the American Astronomical Society, Washington, D.C., and held at NASA Goddard Space Flight Center Greenbelt, Maryland June 5-7, 1984 N/LS/X NationalAeronautics and SpaceAdministration ScientificandTechnical InformationBranch J 1985 TABLE OF CONTENTS ORGANIZING COMMITTEE v LIST OF PARTICIPANTS vi OPENING REMARKS A.B. Underhill I SESSION I. - EVIDENCE FOR NONRADIATIVE ACTIVITY IN STARS EVIDENCE FOR NONRADIATIVE ACTIVITY IN HOT STARS J.P. Cassinelli (Invited review) 2 EVIDENCE FOR NON-RADIATIVE ACTIVITY IN STARS WITH Tef f < i0,000 K Jeffrey L. Linsky (Invited review) 24 OBSERVATIONS OF NONTHERMAL RADIO EMISSION FROM EARLY TYPE STARS D.C. Abbott, J.H. Bieging and E. Churehwell 47 NONRADIAL PULSATION AND MASS LOSS IN EARLY B STARS G. Donald Penrod and Myron A. Smith 53 NARROW ABSORPTION COMPONENTS IN Be STAR WINDS C.A. Grady 57 LIGHT VARIATIONS OF THE B-TYPE STAR HD 160202 Gustav A. Bakos 62 ULTRAVIOLET SPECTRAL MORPHOLOGY OF 0-TYPE STELLAR WINDS Nolan R. Walborn 66 NONTHERMAL RADIO EMISSION AND THE HR DIAGRAM D.M. Gibson 70 X-RAY ACTIVITY IN PRE-MAIN SEQUENCE STARS Eric D. Feigelson 75 ACTIVE PHENOMENA IN THE PRE-MAIN SEQUENCE STAR AB AUR F. -
(AGB) Stars David Leon Gobrecht
Molecule and dust synthesis in the inner winds of oxygen-rich Asymptotic Giant Branch (A GB) stars Inauguraldissertation zur Erlangung der Würde eines Doktors der Philosophie vorgelegt der Philosophisch-Naturwissenschaftlichen Fakultät der Universität Basel von David Leon Gobrecht aus Gebenstorf Aargau Basel, 2016 Originaldokument gespeichert auf dem Dokumentenserver der Universität Basel edoc.unibas.ch David Leon Gobrecht Genehmigt von der Philosophisch-Naturwissenschaftlichen Fakultät auf Antrag von Prof. Dr. F.-K. Thielemann, PD Dr. Isabelle Cherchneff, PD Dr. Dahbia Talbi Basel, den 17. Februar 2015 Prof. Dr. Jörg Schibler Dekanin/Dekan IK Tau as seen by Two Micron All Sky Survey, 2MASS, (top) and Sloan Digital Sky Survey, SDSS, (bottom) from the Aladin Sky Atlas in the Simbad astronomical database (Wenger et al., 2000) 3 Abstract This thesis aims to explain the masses and compositions of prevalent molecules, dust clusters, and dust grains in the inner winds of oxygen-rich AGB stars. In this context, models have been developed, which account for various stellar conditions, reflecting all the evolutionary stages of AGB stars, as well as different metallicities. Moreover, we aim to gain insight on the nature of dust grains, synthesised by inorganic and metallic clusters with associated structures, energetics, reaction mechanisms, and finally possible formation routes. We model the circumstellar envelopes of AGB stars, covering several C/O ratios below unity and pulsation periods of 100 - 500 days, by employing a chemical-kinetic approach. Periodic shocks, induced by pulsation, with speeds of 10 - 32 km s−1 enable a non-equilibrium chemistry to take place between 1 and 10 R∗ above the photosphere. -
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. -
Signature Redacted a Uthor
CubeSat Constellation Implementation and Management Using Differential Drag by MASANGRMNS8TUTE OF TECHNOLOGY Zachary Thomas Lee IJUL 112017 B.S. Mechanical Engineering United States Military Academy, 2015 LIBRARIES ARCHIVES Submitted to the Department of Aeronautics and Astronautics in partial fulfillment of the requirements for the degree of Master of Science in Aeronautics and Astronautics at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 2017 Massachusetts Institute of Technology 2017. All rights reserved. Signature redacted A uthor ............................ Department ronaucstronautics , eoatic and Atoatc May 25, 2017 Certified by................Signature redacted V Kerri Cahoy Associate Professor of Aeronautics and Astronautics Thesis Supervisor Accepted by.................Signature redacted Youssef M. Marzouk Associate Professor of Aeronautics and Astronautics Chair, Graduate Program Committee Disclaimer: The views expressed in this thesis are those of the author and do not reflect the official policy or position of the United States Army, the United States Department of Defense, or the United States Government. 2 CubeSat Constellation Implementation and Management Using Differential Drag by Zachary Thomas Lee Submitted to the Department of Aeronautics and Astronautics on May 25, 2017, in partial fulfillment of the requirements for the degree of Master of Science in Aeronautics and Astronautics Abstract Space missions often require the use of several satellites working in coordination with each other. Industry examples include Planet, which is working to develop a constellation of over 100 Cube Satellites (CubeSats) to obtain global imagery data daily, and Astro Digital, which seeks to implement a constellation of multispectral imaging satellites to image the entire Earth every three to four days [1, 2]. CubeSat constellations are also being considered for applications such as secure laser commu- nication relays and for weather sensing with short revisit times [3, 4]. -
The Circumstellar Environment of Evolved Stars As Revealed by Studies of Circumstellar Water Masers
The Circumstellar Environment of Evolved Stars as Revealed by Studies of Circumstellar Water Masers by Kevin Marvel ISBN: 1-58112-061-3 DISSERTATION.COM 1999 Copyright © 1996 Kevin Marvel All rights reserved. ISBN: 1-58112-061-3 Published by Dissertation.com 1999 www.dissertation.com/library/1120613a.htm THE CIRCUMSTELLAR ENVIRONMENT OF EVOLVED STARS AS REVEALED BY STUDIES OF CIRCUMSTELLAR WATER MASERS BY KEVIN BOYD MARVEL, B.S., B.S., M.S. A Dissertation submitted to the Graduate Scho ol in partial ful llmentofthe requirements for the Degree Do ctor of Philosophy Ma jor Sub ject: Astronomy Minor Sub ject: Physics New Mexico State University Las Cruces, New Mexico December 1996 "The Circumstellar Environment of Evolved Stars as Revealed by Prop er Mo- tion Studies of Circumstellar Water Masers," a dissertation prepared by Kevin Boyd Marvel in partial ful llment of the requirements for the degree, Doctor of Philosophy, has b een approved and accepted by the following: TimothyJ. Pettib one Dean of the Graduate Scho ol Jack O. Burns Chair of the Examining Committee Date Committee in charge: Dr. Jack O. Burns Dr. Reta Beeb e Dr. Phil Diamond Dr. Paul Nachman Dr. Rene A. Walterb os i ACKNOWLEDGMENTS \That this b o ok has its faults, no one can doubt, Although the Author could not nd them out. The faults you nd, go o d Reader, please to mend, Your comments to the Author kindly send. " Kitchiner's The Economy of the Eyes.|Part II. When I rst decided to b ecome an astronomer, I gave up a promising career in marine biology. -
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. -
Effects of Rotation Arund the Axis on the Stars, Galaxy and Rotation of Universe* Weitter Duckss1
Effects of Rotation Arund the Axis on the Stars, Galaxy and Rotation of Universe* Weitter Duckss1 1Independent Researcher, Zadar, Croatia *Project: https://www.svemir-ipaksevrti.com/Universe-and-rotation.html; (https://www.svemir-ipaksevrti.com/) Abstract: The article analyzes the blueshift of the objects, through realized measurements of galaxies, mergers and collisions of galaxies and clusters of galaxies and measurements of different galactic speeds, where the closer galaxies move faster than the significantly more distant ones. The clusters of galaxies are analyzed through their non-zero value rotations and gravitational connection of objects inside a cluster, supercluster or a group of galaxies. The constant growth of objects and systems is visible through the constant influx of space material to Earth and other objects inside our system, through percussive craters, scattered around the system, collisions and mergers of objects, galaxies and clusters of galaxies. Atom and its formation, joining into pairs, growth and disintegration are analyzed through atoms of the same values of structure, different aggregate states and contiguous atoms of different aggregate states. The disintegration of complex atoms is followed with the temperature increase above the boiling point of atoms and compounds. The effects of rotation around an axis are analyzed from the small objects through stars, galaxies, superclusters and to the rotation of Universe. The objects' speeds of rotation and their effects are analyzed through the formation and appearance of a system (the formation of orbits, the asteroid belt, gas disk, the appearance of galaxies), its influence on temperature, surface gravity, the force of a magnetic field, the size of a radius. -
Information Bulletin on Variable Stars
COMMISSIONS AND OF THE I A U INFORMATION BULLETIN ON VARIABLE STARS Nos April November EDITORS L SZABADOS K OLAH TECHNICAL EDITOR A HOLL TYPESETTING MB POCS ADMINISTRATION Zs KOVARI EDITORIAL BOARD E Budding HW Duerb eck EF Guinan P Harmanec chair D Kurtz KC Leung C Maceroni NN Samus advisor C Sterken advisor H BUDAPEST XI I Box HUNGARY URL httpwwwkonkolyhuIBVSIBVShtml HU ISSN 2 IBVS 4701 { 4800 COPYRIGHT NOTICE IBVS is published on b ehalf of the th and nd Commissions of the IAU by the Konkoly Observatory Budap est Hungary Individual issues could b e downloaded for scientic and educational purp oses free of charge Bibliographic information of the recent issues could b e entered to indexing sys tems No IBVS issues may b e stored in a public retrieval system in any form or by any means electronic or otherwise without the prior written p ermission of the publishers Prior written p ermission of the publishers is required for entering IBVS issues to an electronic indexing or bibliographic system to o IBVS 4701 { 4800 3 CONTENTS WOLFGANG MOSCHNER ENRIQUE GARCIAMELENDO GSC A New Variable in the Field of V Cassiop eiae :::::::::: JM GOMEZFORRELLAD E GARCIAMELENDO J GUARROFLO J NOMENTORRES J VIDALSAINZ Observations of Selected HIPPARCOS Variables ::::::::::::::::::::::::::: JM GOMEZFORRELLAD HD a New Low Amplitude Variable Star :::::::::::::::::::::::::: ME VAN DEN ANCKER AW VOLP MR PEREZ D DE WINTER NearIR Photometry and Optical Sp ectroscopy of the Herbig Ae Star AB Au rigae :::::::::::::::::::::::::::::::::::::::::::::::::::