Six Β Cephei Stars As Seen with BRITE and from the Ground
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Naming the Extrasolar Planets
Naming the extrasolar planets W. Lyra Max Planck Institute for Astronomy, K¨onigstuhl 17, 69177, Heidelberg, Germany [email protected] Abstract and OGLE-TR-182 b, which does not help educators convey the message that these planets are quite similar to Jupiter. Extrasolar planets are not named and are referred to only In stark contrast, the sentence“planet Apollo is a gas giant by their assigned scientific designation. The reason given like Jupiter” is heavily - yet invisibly - coated with Coper- by the IAU to not name the planets is that it is consid- nicanism. ered impractical as planets are expected to be common. I One reason given by the IAU for not considering naming advance some reasons as to why this logic is flawed, and sug- the extrasolar planets is that it is a task deemed impractical. gest names for the 403 extrasolar planet candidates known One source is quoted as having said “if planets are found to as of Oct 2009. The names follow a scheme of association occur very frequently in the Universe, a system of individual with the constellation that the host star pertains to, and names for planets might well rapidly be found equally im- therefore are mostly drawn from Roman-Greek mythology. practicable as it is for stars, as planet discoveries progress.” Other mythologies may also be used given that a suitable 1. This leads to a second argument. It is indeed impractical association is established. to name all stars. But some stars are named nonetheless. In fact, all other classes of astronomical bodies are named. -
New Windows on Massive Stars, Asteroseismology, Interferometry and Spectropolarimetry
Proceedings of the International Astronomical Union IAU Symposium No. 307 IAU Symposium IAU Symposium 23-27 June 2014 Massive stars play a crucial role in the Universe: they are important drivers for the photometric and chemical evolution of galaxies; 307 Geneva, Switzerland they are sources of important elements, including those necessary for life; and, with their strong winds and supernova explosions, they feed the interstellar medium with momentum and kinetic energy, impacting on the star formation rate. Knowledge of the evolution 23-27 June 2014 307 23-27 June 2014 New Windows on of massive stars is important not only for stellar physics, but also for Geneva, Switzerland New Windows on probing the evolution of galaxies and their star formation histories Geneva, Switzerland throughout cosmic time. This volume provides an introduction to Massive Stars: these topics and to the techniques used to investigate the Massive Stars: properties of massive stars, including asteroseismology, spectropolarimetry, and interferometry. It highlights synergies Asteroseismology, between these new techniques and more classical methods, to create a synthetic view of massive stars, leading researchers Asteroseismology, Interferometry and towards new and innovative solutions to the most topical questions regarding the evolution of massive stars. Spectropolarimetry Interferometry and Proceedings of the International Astronomical Union Editor in Chief: Prof. Thierry Montmerle New Windows on This series contains the proceedings of major scientifi c meetings Massive Stars: held by the International Astronomical Union. Each volume Spectropolarimetry contains a series of articles on a topic of current interest in Asteroseismology, astronomy, giving a timely overview of research in the fi eld. With Interferometry contributions by leading scientists, these books are at a level and suitable for research astronomers and graduate students. -
Instruction Manual
iOptron® GEM28 German Equatorial Mount Instruction Manual Product GEM28 and GEM28EC Read the included Quick Setup Guide (QSG) BEFORE taking the mount out of the case! This product is a precision instrument and uses a magnetic gear meshing mechanism. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount. You must hold the mount firmly when disengaging or adjusting the gear switches. Otherwise personal injury and/or equipment damage may occur. Any worm system damage due to improper gear meshing/slippage will not be covered by iOptron’s limited warranty. 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. GEM28 Overview .......................................................................................................................................... 5 2. GEM28 Terms ................................................................................................................................................ 6 2.1. Parts List ................................................................................................................................................. -
A Data Viewer for R
Paul Murrell A Data Viewer for R A Data Viewer for R Paul Murrell The University of Auckland July 30 2009 Paul Murrell A Data Viewer for R Overview Motivation: STATS 220 Problem statement: Students do not understand what they cannot see. What doesn’t work: View() A solution: The rdataviewer package and the tcltkViewer() function. What else?: Novel navigation interface, zooming, extensible for other data sources. Paul Murrell A Data Viewer for R STATS 220 Data Technologies HTML (and CSS), XML (and DTDs), SQL (and databases), and R (and regular expressions) Online text book that nobody reads Computer lab each week (worth 0.5%) + three Assignments 5 labs + one assignment on R Emphasis on creating and modifying data structures Attempt to use real data Paul Murrell A Data Viewer for R Example Lab Question Read the file lab10.txt into R as a character vector. You should end up with a symbol habitats that prints like this (this shows just the first 10 values; there are 192 values in total): > head(habitats, 10) [1] "upwd1201" "upwd0502" "upwd0702" [4] "upwd1002" "upwd1102" "upwd0203" [7] "upwd0503" "upwd0803" "upwd0104" [10] "upwd0704" Paul Murrell A Data Viewer for R The file lab10.txt upwd1201 upwd0502 upwd0702 upwd1002 upwd1102 upwd0203 upwd0503 upwd0803 upwd0104 upwd0704 upwd0804 upwd1204 upwd0805 upwd1005 upwd0106 dnwd1201 dnwd0502 dnwd0702 dnwd1002 dnwd1102 dnwd1202 dnwd0103 dnwd0203 dnwd0303 dnwd0403 dnwd0503 dnwd0803 dnwd0104 dnwd0704 dnwd0804 dnwd1204 dnwd0805 dnwd1005 dnwd0106 uppl0502 uppl0702 uppl1002 uppl1102 uppl0203 uppl0503 -
February 2019 BRAS Newsletter
Monthly Meeting February 11th at 7PM at HRPO (Monthly meetings are on 2nd Mondays, Highland Road Park Observatory). Speaker: Chris Desselles on Astrophotography What's In This Issue? President’s Message Secretary's Summary Outreach Report Astrophotography Group Asteroid and Comet News Light Pollution Committee Report Recent BRAS Forum Entries Messages from the HRPO Science Academy International Astronomy Day Friday Night Lecture Series Globe at Night Adult Astronomy Courses Nano Days Observing Notes – Canis Major – The Great Dog & 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 February 2019 © 2019 President’s Message The highlight of January was the Total Lunar Eclipse 20/21 January 2019. There was a great turn out at HRPO, and it was a lot of fun. If any of the members wish to volunteer at HRPO, please speak to Chris Kersey, BRAS Liaison for BREC, to fill out the paperwork. MONTHLY SPEAKERS: One of the club’s needs is speakers for our monthly meetings if you are willing to give a talk or know of a great speaker let us know. UPCOMING BRAS MEETINGS: Light Pollution Committee - HRPO, Wednesday, February 6, 6:15 P.M. Business Meeting – HRPO, Wednesday, February 6, 7 P.M. Monthly Meeting – HRPO, Monday, February 11, 7 P.M. VOLUNTEERS: While BRAS members are not required to volunteer, if we do grow our volunteer core in 2019 we can do more fun activities without wearing out our great volunteers. Volunteering is an excellent opportunity to share what you know while increasing your skills. -
Annual Report 2009 ESO
ESO European Organisation for Astronomical Research in the Southern Hemisphere Annual Report 2009 ESO European Organisation for Astronomical Research in the Southern Hemisphere Annual Report 2009 presented to the Council by the Director General Prof. Tim de Zeeuw The European Southern Observatory ESO, the European Southern Observa tory, is the foremost intergovernmental astronomy organisation in Europe. It is supported by 14 countries: Austria, Belgium, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Several other countries have expressed an interest in membership. Created in 1962, ESO carries out an am bitious programme focused on the de sign, construction and operation of power ful groundbased observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research. ESO operates three unique world View of the La Silla Observatory from the site of the One of the most exciting features of the class observing sites in the Atacama 3.6 metre telescope, which ESO operates together VLT is the option to use it as a giant opti with the New Technology Telescope, and the MPG/ Desert region of Chile: La Silla, Paranal ESO 2.2metre Telescope. La Silla also hosts national cal interferometer (VLT Interferometer or and Chajnantor. ESO’s first site is at telescopes, such as the Swiss 1.2metre Leonhard VLTI). This is done by combining the light La Silla, a 2400 m high mountain 600 km Euler Telescope and the Danish 1.54metre Teles cope. -
The Universe
The Universe Page | 2 INDEX Contents Pg 1) The universe 4 2) History of the universe 6 3) Maps of the universe 7 4) Galaxies 15 5) Stars 18 6) Neutron stars and black holes 21 7) Constellations 23 8) Time travel 27 9) Satellites and rockets 31 10) The Milky Way Galaxy 35 11) The Solar System 37 12) Exoplanets 51 13) The end of the Earth, the Solar System and the Universe 53 Page | 3 The Universe The universe is everything we know that exists like us humans, the planets, the stars, the galaxies etc. The universe has a possibly infinite volume, due to its expansion. (To see how big the universe is, check Maps on Page 7). There are probably at least 100 billion galaxies known to man in the universe, and about 300 sextillion stars. The diameter of the known universe is at least 93 billion light years (1 light year = 9.46×1012 kilometers or 9.46×1015 meters) or 8.80×1026 meters. According to General Theory of Relativity, space expands faster than the speed of light. Due to this rapid expansion, it is not brief whether the size of the universe is finite or infinite. The expansion of the Universe is due to presence of dark energy, which is found to be 73% and dark matter (23%). There is only 4% matter found. However, even though the universe is huge and massive, it has a very small density of 9.9 ×10-30 gm per cubic centimeters (excluding stars, planets and any other celestial body). -
The COLOUR of CREATION Observing and Astrophotography Targets “At a Glance” Guide
The COLOUR of CREATION observing and astrophotography targets “at a glance” guide. (Naked eye, binoculars, small and “monster” scopes) Dear fellow amateur astronomer. Please note - this is a work in progress – compiled from several sources - and undoubtedly WILL contain inaccuracies. It would therefor be HIGHLY appreciated if readers would be so kind as to forward ANY corrections and/ or additions (as the document is still obviously incomplete) to: [email protected]. The document will be updated/ revised/ expanded* on a regular basis, replacing the existing document on the ASSA Pretoria website, as well as on the website: coloursofcreation.co.za . This is by no means intended to be a complete nor an exhaustive listing, but rather an “at a glance guide” (2nd column), that will hopefully assist in choosing or eliminating certain objects in a specific constellation for further research, to determine suitability for observation or astrophotography. There is NO copy right - download at will. Warm regards. JohanM. *Edition 1: June 2016 (“Pre-Karoo Star Party version”). “To me, one of the wonders and lures of astronomy is observing a galaxy… realizing you are detecting ancient photons, emitted by billions of stars, reduced to a magnitude below naked eye detection…lying at a distance beyond comprehension...” ASSA 100. (Auke Slotegraaf). Messier objects. Apparent size: degrees, arc minutes, arc seconds. Interesting info. AKA’s. Emphasis, correction. Coordinates, location. Stars, star groups, etc. Variable stars. Double stars. (Only a small number included. “Colourful Ds. descriptions” taken from the book by Sissy Haas). Carbon star. C Asterisma. (Including many “Streicher” objects, taken from Asterism. -
Almanacco Astronomico 2002 – Introduzione
Almanacco Astronomico per l’anno 2002 Sergio Alessandrelli C.C.C.D.S. - Hipparcos La Luna – Principali formazioni geologiche Almanacco Astronomico per l’anno 2002 A tutti gli amici astrofili… 1 Almanacco Astronomico 2002 – Introduzione Introduzione all’Almanacco Astronomico 2002 Il presente Almanacco Astronomico è stato realizzato utilizzando comuni programmi di calcolo astronomico facilmente reperibili sul mercato del software, ovvero scaricabili gratuitamente tramite Internet. La precisione nei calcoli è quindi quella tipica per questo tipo di software, ossia sufficiente per gli usi dell’astrofilo medio. Tutti gli eventi sono stati calcolati per le coordinate di Roma (Lat. 41° 52’ 48” N, Long. 12° 30’ 00” E) e gli orari espressi (tranne laddove altrimenti specificato) in tempo universale. 2 Almanacco Astronomico 2002 – Calendario del 2002 Calendario del 2002 January February March Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 3 4 5 1 2 1 2 6 7 8 9 10 11 12 3 4 5 6 7 8 9 3 4 5 6 7 8 9 13 14 15 16 17 18 19 10 11 12 13 14 15 16 10 11 12 13 14 15 16 20 21 22 23 24 25 26 17 18 19 20 21 22 23 17 18 19 20 21 22 23 27 28 29 30 31 24 25 26 27 28 24 25 26 27 28 29 30 31 April May June Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 1 2 3 4 1 7 8 9 10 11 12 13 5 6 7 8 9 10 11 2 3 4 5 6 7 8 14 15 16 17 18 19 20 12 13 14 15 16 17 18 9 10 11 12 13 14 15 21 22 23 24 25 26 27 19 20 21 22 23 24 25 16 17 18 19 20 21 22 28 29 30 26 27 28 29 30 31 23 24 25 26 27 28 29 30 July August September Su Mo Tu We -
A Summary of the Different Classes of Stellar Pulsators
A Summary of the Different Classes of Stellar Pulsators A summary of all the classes of pulsating stars and their main properties as described in Chapter 2 is given in the tables below. This list originated from a combination of observational discoveries, measured stellar properties, and theoretical developments. Observers who found a new type of pulsator either named it after the prototype or gave the class a name according to the ob- served characteristics of the oscillations. Several pulsators, or even groups of pulsators, were afterwards found to originate from the same physical mech- anism and were thus merged into one and the same class. We sort this out here in Tables A.1 and A.2 in order to avoid further confusion on pulsating star nomenclature. The effective temperature and luminosity indicated in Tables A.1 and A.2 should be taken as rough indications only of the borders of instability strips. Often the theory is not sufficiently refined to consider these boundaries as final. Moreover, there is overlap between various classes where so-called hy- brid pulsators, whose oscillations are excited in two different layers and/or by two different mechanisms, occur. Finally, new discoveries are being made frequently, which then drive new theoretical developments possibly leading to new instability regions. The results from the future observing facilities as described in Chapter 8 will surely lead to new classes and/or subclasses with lower amplitudes compared to what is presently achievable. In the tables below, F stands for fundamental radial mode, FO for first radial overtone and S for strange mode oscillations. -
Università Degli Studi Di Napoli Federico II Pre-Supernova Alert
Università degli Studi di Napoli Federico II DOTTORATO DI RICERCA IN FISICA Ciclo XXXIII Coordinatore: prof. Salvatore Capozziello Pre-Supernova Alert System for Super-Kamiokande with Gadolinium Settore Scientifico Disciplinare _____/______ Dottorando Tutor Lucas NASCIMENTO MACHADO Prof.ssa Gianfranca DE ROSA Prof. Vittorio PALLADINO Anni 2018/2021 Declaration of Authorship I, Lucas Nascimento Machado, declare that this thesis titled, ‘Pre-Supernova Alert System for Super-Kamiokande with Gadolinium’ and the work presented in it are my own. I confirm that: ⌅ This work was done wholly or mainly while in candidature for a research degree at this University. ⌅ Where any part of this thesis has previously been submitted for a degree or any other qualification at this University or any other institution, this has been clearly stated. ⌅ Where I have consulted the published work of others, this is always clearly attributed. ⌅ Where I have quoted from the work of others, the source is always given. With the exception of such quotations, this thesis is entirely my own work. ⌅ Ihaveacknowledgedallmainsourcesofhelp. ⌅ Where the thesis is based on work done by myself jointly with others, I have made clear exactly what was done by others and what I have contributed myself. Signed: Date: 1 UNIVERSITA` DEGLI STUDI DI NAPOLI FEDERICO II Abstract (English) ”Ettore Pancini” Physics Department Doctor of Philosophy by Lucas Nascimento Machado The current phase of the Super-Kamiokande experiment, SK-Gd, is character- ized by the addition of gadolinium sulfate to the water Cherenkov detector, which improves the detection capability of thermal neutrons. For low energy events, the main detection channel for electron anti-neutrinos is the Inverse Beta Decay interaction, which has, in its final state, a positron and a neutron. -
PCOS Newsletter, Vol. 4, No. 2, August 2014
National Aeronautics and Space Administration August 2014 Vol. 4 No. 2 Summer 2014 PCOS Update Contents Mansoor Ahmed, PCOS Program Manager Summer 2014 PCOS Update.................................................. 1 Ann Hornschemeier, PCOS Program Chief Scientist LISA Pathfinder Approaches Launch ..................................... 3 Physics of the Cosmos Program Analysis Group (PhysPAG) Report .................................................................. 4 Since February 2014, progress has continued on a number of U.S. Participation in Athena .................................................. 4 fronts in the PCOS portfolio. Chief among these are the next ENSCI and the Role of NASA in Euclid ................................. 5 steps in defining a U.S. role in the European Space Agency Message from the NASA HQ Astrophysics Division Director 6 (ESA) L2 and L3 opportunities. Following the June 2014 an- Meet the Einstein Fellows: Tim Linden ................................ 10 nouncement by ESA of the selection of the L2 mission Athena Please read Robert Petre’s article on Athena which includes the we are now referring to this mission by name and are pleased to full list of members of the ESA-selected SST. Conversations have selected, via an open community call in early July 2014, with ESA concerning L3 are at a much earlier stage and we ex- a U.S. representative to the Athena Science Study Team (SST). (continued on page 2) NASA’s Fermi Finds A “Transformer” Pulsar In late June 2013, an exceptional binary containing a rapid- ly spinning neutron star underwent a dramatic change in be- havior never before observed. The pulsar’s radio beacon van- ished, while at the same time the system brightened fivefold in gamma rays, the most powerful form of light, according to measurements by NASA’s Fermi Gamma-ray Space Telescope.