Oregon Star Party Level 3 / Advanced Observing List
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Spatial Distribution of Galactic Globular Clusters: Distance Uncertainties and Dynamical Effects
Juliana Crestani Ribeiro de Souza Spatial Distribution of Galactic Globular Clusters: Distance Uncertainties and Dynamical Effects Porto Alegre 2017 Juliana Crestani Ribeiro de Souza Spatial Distribution of Galactic Globular Clusters: Distance Uncertainties and Dynamical Effects Dissertação elaborada sob orientação do Prof. Dr. Eduardo Luis Damiani Bica, co- orientação do Prof. Dr. Charles José Bon- ato e apresentada ao Instituto de Física da Universidade Federal do Rio Grande do Sul em preenchimento do requisito par- cial para obtenção do título de Mestre em Física. Porto Alegre 2017 Acknowledgements To my parents, who supported me and made this possible, in a time and place where being in a university was just a distant dream. To my dearest friends Elisabeth, Robert, Augusto, and Natália - who so many times helped me go from "I give up" to "I’ll try once more". To my cats Kira, Fen, and Demi - who lazily join me in bed at the end of the day, and make everything worthwhile. "But, first of all, it will be necessary to explain what is our idea of a cluster of stars, and by what means we have obtained it. For an instance, I shall take the phenomenon which presents itself in many clusters: It is that of a number of lucid spots, of equal lustre, scattered over a circular space, in such a manner as to appear gradually more compressed towards the middle; and which compression, in the clusters to which I allude, is generally carried so far, as, by imperceptible degrees, to end in a luminous center, of a resolvable blaze of light." William Herschel, 1789 Abstract We provide a sample of 170 Galactic Globular Clusters (GCs) and analyse its spatial distribution properties. -
And Ecclesiastical Cosmology
GSJ: VOLUME 6, ISSUE 3, MARCH 2018 101 GSJ: Volume 6, Issue 3, March 2018, Online: ISSN 2320-9186 www.globalscientificjournal.com DEMOLITION HUBBLE'S LAW, BIG BANG THE BASIS OF "MODERN" AND ECCLESIASTICAL COSMOLOGY Author: Weitter Duckss (Slavko Sedic) Zadar Croatia Pусскй Croatian „If two objects are represented by ball bearings and space-time by the stretching of a rubber sheet, the Doppler effect is caused by the rolling of ball bearings over the rubber sheet in order to achieve a particular motion. A cosmological red shift occurs when ball bearings get stuck on the sheet, which is stretched.“ Wikipedia OK, let's check that on our local group of galaxies (the table from my article „Where did the blue spectral shift inside the universe come from?“) galaxies, local groups Redshift km/s Blueshift km/s Sextans B (4.44 ± 0.23 Mly) 300 ± 0 Sextans A 324 ± 2 NGC 3109 403 ± 1 Tucana Dwarf 130 ± ? Leo I 285 ± 2 NGC 6822 -57 ± 2 Andromeda Galaxy -301 ± 1 Leo II (about 690,000 ly) 79 ± 1 Phoenix Dwarf 60 ± 30 SagDIG -79 ± 1 Aquarius Dwarf -141 ± 2 Wolf–Lundmark–Melotte -122 ± 2 Pisces Dwarf -287 ± 0 Antlia Dwarf 362 ± 0 Leo A 0.000067 (z) Pegasus Dwarf Spheroidal -354 ± 3 IC 10 -348 ± 1 NGC 185 -202 ± 3 Canes Venatici I ~ 31 GSJ© 2018 www.globalscientificjournal.com GSJ: VOLUME 6, ISSUE 3, MARCH 2018 102 Andromeda III -351 ± 9 Andromeda II -188 ± 3 Triangulum Galaxy -179 ± 3 Messier 110 -241 ± 3 NGC 147 (2.53 ± 0.11 Mly) -193 ± 3 Small Magellanic Cloud 0.000527 Large Magellanic Cloud - - M32 -200 ± 6 NGC 205 -241 ± 3 IC 1613 -234 ± 1 Carina Dwarf 230 ± 60 Sextans Dwarf 224 ± 2 Ursa Minor Dwarf (200 ± 30 kly) -247 ± 1 Draco Dwarf -292 ± 21 Cassiopeia Dwarf -307 ± 2 Ursa Major II Dwarf - 116 Leo IV 130 Leo V ( 585 kly) 173 Leo T -60 Bootes II -120 Pegasus Dwarf -183 ± 0 Sculptor Dwarf 110 ± 1 Etc. -
Libro Resumen Sea2016v55 0.Pdf
2 ...................................................................................................................................... 4 .................................................................................................. 4 ........................................................................................................... 4 PATROCINADORES .................................................................................................................... 5 RESUMEN PROGRAMA GENERAL ............................................................................................ 7 PLANO BIZKAIA ARETOA .......................................................................................................... 8 .......................................................................................... 9 CONFERENCIAS PLENARIAS ................................................................................................... 14 ............................................................................................. 19 ................................................................................................ 21 ............... 23 CIENCIAS PLANETARIAS ......................................................................................................... 25 - tarde ....................................................................................................... 25 - ............................................................................................ 28 - tarde ................................................................................................ -
The Milky Way Galaxy Contents Summary
UNESCO EOLSS ENCYCLOPEDIA The Milky Way galaxy James Binney Physics Department Oxford University Key Words: Milky Way, galaxies Contents Summary • Introduction • Recognition of the size of the Milky Way • The Centre • The bulge-bar • History of the bulge Globular clusters • Satellites • The disc • Spiral structure Interstellar gas Moving groups, associations and star clusters The thick disc Local mass density The dark halo • Summary Our Galaxy is typical of the galaxies that dominate star formation in the present Universe. It is a barred spiral galaxy – a still-forming disc surrounds an old and barred spheroid. A massive black hole marks the centre of the Galaxy. The Sun sits far out in the disc and in visible light our view of the Galaxy is limited by interstellar dust. Consequently, the large-scale structure of the Galaxy must be inferred from observations made at infrared and radio wavelengths. The central bar and spiral structure in the stellar disc generate significant non-axisymmetric gravitational forces that make the gas disc and its embedded star formation strongly non-axisymmetric. Molecular hydrogen is more centrally concentrated than atomic hydrogen and much of it is contained in molecular clouds within which stars form. Probably all stars are formed in an association or cluster, and energy released by the more massive stars quickly disperses gas left over from their birth. This dispersal of residual gas usually leads to the dissolution of the association or cluster. The stellar disc can be decomposed to a thin disc, which comprises stars formed over most of the Galaxy’s lifetime, and a thick disc, which contains only stars formed in about the Galaxy’s first gigayear. -
Distant Arm - NGC772
29 September 2016, Zeiss Cas 150/2250 Distant Arm - NGC772 Telescope: Zeiss Cassegrain 150/2250 Eyepieces: ATC53P - ATC Plossl, f=53mm, (42×, 530) ATC20K - ATC Kellner, f=20mm, (113×, 220) A-16 - Zeiss Abbe Ortho, f=16mm, (141×, 200) O-12.5 - CZJ Ortho, f=12.5mm, (180×, 140) Time: 2016/09/29 19:30-21:40UT Location: R´ıˇcanyˇ Weather: Clear sky with slight haze and decaying small thin clouds. Mount: Zeiss 1b Accessories: Baader/Zeiss T2 prism This was my typical backyard session. I could go out only for a short time after I put all three kids in to their beds. The night was still warm. Normally, I would try to take an advantage of it and go to some darker place. As I was alone with the kids for the whole week I was bound to stay in our backyard. During last couple of years, I have learnt to live with this handicap. There is always something interesting to look at, even with small refractors. Recently, I was explor- ing the capability of my largest telescope, 150mm Cassegrain. For this night, the main targets were two galaxies, NGC 660 and NGC 772, which I had troubles to locate two days before in 80mm refractor. I was curios how much of help the larger telescope would be. I did not jump to these two galaxies im- mediately. They were still low in the slight haze enhanced by the street lamps. I started a little bit higher in Andromeda with beau- tiful edge-on galaxy NGC 891 (V=10.0, 13:50 ×2:50, PA22◦). -
And – Objektauswahl NGC Teil 1
And – Objektauswahl NGC Teil 1 NGC 5 NGC 49 NGC 79 NGC 97 NGC 184 NGC 233 NGC 389 NGC 531 Teil 1 NGC 11 NGC 51 NGC 80 NGC 108 NGC 205 NGC 243 NGC 393 NGC 536 NGC 13 NGC 67 NGC 81 NGC 109 NGC 206 NGC 252 NGC 404 NGC 542 Teil 2 NGC 19 NGC 68 NGC 83 NGC 112 NGC 214 NGC 258 NGC 425 NGC 551 NGC 20 NGC 69 NGC 85 NGC 140 NGC 218 NGC 260 NGC 431 NGC 561 NGC 27 NGC 70 NGC 86 NGC 149 NGC 221 NGC 262 NGC 477 NGC 562 NGC 29 NGC 71 NGC 90 NGC 160 NGC 224 NGC 272 NGC 512 NGC 573 NGC 39 NGC 72 NGC 93 NGC 169 NGC 226 NGC 280 NGC 523 NGC 590 NGC 43 NGC 74 NGC 94 NGC 181 NGC 228 NGC 304 NGC 528 NGC 591 NGC 48 NGC 76 NGC 96 NGC 183 NGC 229 NGC 317 NGC 529 NGC 605 Sternbild- Zur Objektauswahl: Nummer anklicken Übersicht Zur Übersichtskarte: Objekt in Aufsuchkarte anklicken Zum Detailfoto: Objekt in Übersichtskarte anklicken And – Objektauswahl NGC Teil 2 NGC 620 NGC 709 NGC 759 NGC 891 NGC 923 NGC 1000 NGC 7440 NGC 7836 Teil 1 NGC 662 NGC 710 NGC 797 NGC 898 NGC 933 NGC 7445 NGC 668 NGC 712 NGC 801 NGC 906 NGC 937 NGC 7446 Teil 2 NGC 679 NGC 714 NGC 812 NGC 909 NGC 946 NGC 7449 NGC 687 NGC 717 NGC 818 NGC 910 NGC 956 NGC 7618 NGC 700 NGC 721 NGC 828 NGC 911 NGC 980 NGC 7640 NGC 703 NGC 732 NGC 834 NGC 912 NGC 982 NGC 7662 NGC 704 NGC 746 NGC 841 NGC 913 NGC 995 NGC 7686 NGC 705 NGC 752 NGC 845 NGC 914 NGC 996 NGC 7707 NGC 708 NGC 753 NGC 846 NGC 920 NGC 999 NGC 7831 Sternbild- Zur Objektauswahl: Nummer anklicken Übersicht Zur Übersichtskarte: Objekt in Aufsuchkarte anklicken Zum Detailfoto: Objekt in Übersichtskarte anklicken Auswahl And SternbildübersichtAnd -
Galactic Astronomy 1 File
INTRODUCTION TO SPACE 16.11.2020 The Galaxy I: Magnitude systems Structure, rotation, spiral arms Evolution Galactic continuum Galactic centre Boris Dmitriev 23.11. The Galaxy II: stars, gas, dust 30.11. Extragalactic & cosmology 8.12. Exam BASICS OF ASTRONOMY? • Observational Coordinate systems techniques • Feasibility • Source Emission spectrum mechanisms • Source properties • What kind of ELEC-E4530 Radio Astronomy Astronomy sources? ELEC-E4220 Space Instrumentation (galactic & extragalactic) • What kind of science? Why do we study astronomy on this course Needed on other space courses, and by anyone who wishes to continue in astronomical research. The astronomy part on this course consists of coordinate systems, emission mechanisms, and the basics of celestial objects, such as galactic and extragalactic sources. REMINDER: LUMINOSITY The luminosity emitted by a source (= the total radiated energy) L = 4r2 σT4 can be divided into two parts: L = 4r2F F = σT4 (Stefan-Boltzmann law) Luminosity is proportional to the size and the fourth power of the temperature High luminosity → the source is hot or large in size, or both Effective temperature = the temperature of a black body that would emit the same total amount of electromagnetic radiation BRIGHTNESS OF STARS? MAGNITUDE SYSTEMS Describe the optical brightness of celestial objects Logarithmic 2 Apparent magnitude: m = –2.5 lg F/F0 [F]=W/m m1 – m2 = –2.5 lg F1/F2 Bolometric magnitude at all wavelengths: mbol=mv- BC Visual magnitude mv corresponds to the sensitivity of the eye Absolute magnitude M (= the apparent m at a distance of 10pc): m – M = 5 lg (r/10pc) Absolute bolometric magnitude: Mbol – Mbol, = –2.5 lg L/L BC = Bolometric correction, zero for sun-like emission. -
The Dwarf Galaxy Abundances and Radial-Velocities Team (DART) Large Programme – a Close Look at Nearby Galaxies
Reports from Observers The Dwarf galaxy Abundances and Radial-velocities Team (DART) Large Programme – A Close Look at Nearby Galaxies Eline Tolstoy1 The dwarf galaxies we have studied are nearby galaxies. The modes of operation, Vanessa Hill 2 the lowest-luminosity (and mass) galax- the sensitivity and the field of view are Mike Irwin ies that have ever been found. It is likely an almost perfect match to requirements Amina Helmi1 that these low-mass dwarfs are the most for the study of Galactic dSph galaxies. Giuseppina Battaglia1 common type of galaxy in the Universe, For example, it is now possible to meas- Bruno Letarte1 but because of their extremely low ure the abundance of numerous elements Kim Venn surface brightness our ability to detect in nearby galaxies for more than 100 stars Pascale Jablonka 5,6 them diminishes rapidly with increasing over a 25;-diameter field of view in one Matthew Shetrone 7 distance. The only place where we can shot. A vast improvement on previous la- Nobuo Arimoto 8 be reasonably sure to detect a large frac- borious (but valiant) efforts with single-slit Tom Abel 9 tion of these objects is in the Local spectrographs to observe a handful of Francesca Primas10 Group, and even here, ‘complete sam- stars per galaxy (e.g., Tolstoy et al. 200; Andreas Kaufer10 ples’ are added to each year. Within Shetrone et al. 200; Geisler et al. 2005). Thomas Szeifert10 250 kpc of our Galaxy there are nine low- Patrick Francois 2 mass galaxies (seven observable from The DART Large Programme has meas- Kozo Sadakane11 the southern hemisphere), including Sag- ured abundances and velocities for sev- ittarius which is in the process of merging eral hundred individual stars in a sample with our Galaxy. -
Taking the Measure of the Universe: Precision Astrometry with SIM
Accepted for publication in PASP, January 2008 issue A Preprint typeset using LTEX style emulateapj v. 08/22/09 TAKING THE MEASURE OF THE UNIVERSE: PRECISION ASTROMETRY WITH SIM PLANETQUEST Stephen C. Unwin1, Michael Shao2, Angelle M. Tanner2, Ronald J. Allen3, Charles A. Beichman4, David Boboltz5, Joseph H. Catanzarite2, Brian C. Chaboyer6, David R. Ciardi4, Stephen J. Edberg2, Alan L. Fey5, Debra A. Fischer7, Christopher R. Gelino8, Andrew P. Gould9, Carl Grillmair8, Todd J. Henry10, Kathryn V. Johnston11,12, Kenneth J. Johnston5, Dayton L. Jones2, Shrinivas R. Kulkarni4, Nicholas M. Law4, Steven R. Majewski13, Valeri V. Makarov2, Geoffrey W. Marcy14, David L. Meier2, Rob P. Olling15, Xiaopei Pan2, Richard J. Patterson13, Jo Eliza Pitesky2, Andreas Quirrenbach16, Stuart B. Shaklan2, Edward J. Shaya15, Louis E. Strigari17, John A. Tomsick18,19, Ann E. Wehrle20, and Guy Worthey21 Accepted for publication in PASP, January 2008 issue ABSTRACT Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument with flexible scheduling that delivers parallaxes at about 4 microarcsec (µas) on targets as faint as V = 20, and differential accuracy of 0.6 µas on bright targets. The science topics are drawn primarily from the Team Key Projects, selected in 2000, for the Space Interferometry Mission PlanetQuest (SIM PlanetQuest). We use the capabilities of this mission to illustrate the importance of the next level of astrometric precision in modern astrophysics. SIM PlanetQuest is currently in the detailed design phase, having completed in 2005 all of the enabling technologies needed for the flight instrument. -
The Variable Star Population in the Sextans Dwarf Spheroidal Galaxy
TheThe variablevariable starstar populationpopulation inin thethe SextansSextans dwarfdwarf spheroidalspheroidal galaxygalaxy Kathy Vivas Cerro Tololo Interamerican Observatory La Serena, Chile In collaboration with Javier Alonso-García (U. of Antofagasta, Chile) Mario Mateo (U. of Michigan, USA) Alistair Walker (CTIO, Chile) David Nidever (NOAO, USA) DECam Community Science Workshop 2018 1 The Role of Variable Stars ● Tracers of different stellar populations ● Standard candles → Distance Scale Variable stars in the Carina dwarf spheroidal galaxy (Vivas & Mateo 2013) DECam Community Science Workshop 2018 2 Properties of the Satellites of the Milky Way Drlica-Wagner et al., 2015 The new discoveries are likely to be ultra-faint dwarf galaxies. Gallart et al. 2015 Classical dwarfs display a variety of SFRs DECam Community Science Workshop 2018 3 CMDs of Satellite Dwarfs Brown et al 2014 On the other hand, ultra-faint dwarfs seem Monelli et al 2003 to be consistent with only and old Galaxies like Carina show obvious population signs of multiple bursts of star formation DECam Community Science Workshop 2018 4 Leo T: a UFD with extended star formation Clementini et al (2012) DECam Community Science Workshop 2018 5 Helium-Burning Pulsating Stars 3.0 Anomalous Cepheids 2.0 0.7 RR Lyrae Stars Variable stars and theoretical isochrones in Leo I (Fiorentino et al 2012) DECam Community Science Workshop 2018 6 Dwarf Cepheid Stars (collective name for δ Scuti or SX Phe) Intermediate age population TO Old Population TO Coppola et al 2015, Vivas & Mateo 2013 DECam Community Science Workshop 2018 7 Dwarf Cepheids as distance indicators Need to study more systems! Cohen et al (2012) P-L relationship (independent of metallicity) → standard candles DECam Community Science Workshop 2018 8 Dwarf Cepheids in other galaxies 85 dwarf cepheids in Fornax A few thousand in (Poretti et al. -
7.5 X 11.5.Threelines.P65
Cambridge University Press 978-0-521-19267-5 - Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer’s New General Catalogue Wolfgang Steinicke Index More information Name index The dates of birth and death, if available, for all 545 people (astronomers, telescope makers etc.) listed here are given. The data are mainly taken from the standard work Biographischer Index der Astronomie (Dick, Brüggenthies 2005). Some information has been added by the author (this especially concerns living twentieth-century astronomers). Members of the families of Dreyer, Lord Rosse and other astronomers (as mentioned in the text) are not listed. For obituaries see the references; compare also the compilations presented by Newcomb–Engelmann (Kempf 1911), Mädler (1873), Bode (1813) and Rudolf Wolf (1890). Markings: bold = portrait; underline = short biography. Abbe, Cleveland (1838–1916), 222–23, As-Sufi, Abd-al-Rahman (903–986), 164, 183, 229, 256, 271, 295, 338–42, 466 15–16, 167, 441–42, 446, 449–50, 455, 344, 346, 348, 360, 364, 367, 369, 393, Abell, George Ogden (1927–1983), 47, 475, 516 395, 395, 396–404, 406, 410, 415, 248 Austin, Edward P. (1843–1906), 6, 82, 423–24, 436, 441, 446, 448, 450, 455, Abbott, Francis Preserved (1799–1883), 335, 337, 446, 450 458–59, 461–63, 470, 477, 481, 483, 517–19 Auwers, Georg Friedrich Julius Arthur v. 505–11, 513–14, 517, 520, 526, 533, Abney, William (1843–1920), 360 (1838–1915), 7, 10, 12, 14–15, 26–27, 540–42, 548–61 Adams, John Couch (1819–1892), 122, 47, 50–51, 61, 65, 68–69, 88, 92–93, -
Aaron J. Romanowsky Curriculum Vitae (Rev. 1 Septembert 2021) Contact Information: Department of Physics & Astronomy San
Aaron J. Romanowsky Curriculum Vitae (Rev. 1 Septembert 2021) Contact information: Department of Physics & Astronomy +1-408-924-5225 (office) San Jose´ State University +1-409-924-2917 (FAX) One Washington Square [email protected] San Jose, CA 95192 U.S.A. http://www.sjsu.edu/people/aaron.romanowsky/ University of California Observatories +1-831-459-3840 (office) 1156 High Street +1-831-426-3115 (FAX) Santa Cruz, CA 95064 [email protected] U.S.A. http://www.ucolick.org/%7Eromanow/ Main research interests: galaxy formation and dynamics – dark matter – star clusters Education: Ph.D. Astronomy, Harvard University Nov. 1999 supervisor: Christopher Kochanek, “The Structure and Dynamics of Galaxies” M.A. Astronomy, Harvard University June 1996 B.S. Physics with High Honors, June 1994 College of Creative Studies, University of California, Santa Barbara Employment: Professor, Department of Physics & Astronomy, Aug. 2020 – present San Jose´ State University Associate Professor, Department of Physics & Astronomy, Aug. 2016 – Aug. 2020 San Jose´ State University Assistant Professor, Department of Physics & Astronomy, Aug. 2012 – Aug. 2016 San Jose´ State University Research Associate, University of California Observatories, Santa Cruz Oct. 2012 – present Associate Specialist, University of California Observatories, Santa Cruz July 2007 – Sep. 2012 Researcher in Astronomy, Department of Physics, Oct. 2004 – June 2007 University of Concepcion´ Visiting Adjunct Professor, Faculty of Astronomical and May 2005 Geophysical Sciences, National University of La Plata Postdoctoral Research Fellow, School of Physics and Astronomy, June 2002 – Oct. 2004 University of Nottingham Postdoctoral Fellow, Kapteyn Astronomical Institute, Oct. 1999 – May 2002 Rijksuniversiteit Groningen Research Fellow, Harvard-Smithsonian Center for Astrophysics June 1994 – Oct.