The Galileo of Palomar Essays in Memory of Halton Arp
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
RED DE ASTRONOMÍA DE COLOMBIA, RAC [email protected]
___________________________________________________________ RED DE ASTRONOMÍA DE COLOMBIA, RAC www.eafit.edu.co/astrocol [email protected] CIRCULAR 506 de marzo 6 de 2009. ___________________________________________________________ Dirección: Antonio Bernal González: [email protected] Edición: Gonzalo Duque-Escobar: www.galeon.com/gonzaloduquee-00/ __________________________________________________________ Las opiniones emitidas en esta circular son responsabilidad de sus autores. ________________________________________________________ Apreciados amigos de la astronomía: El proyecto "100 horas de Astronomía" propuesto a nivel global por la Unión Astronómica Internacional UAI para los días 2 al 5 de abril de 2009 y que ha sido acogido por multitud de grupos de astrónomos profesionales y aficionados del mundo en diferentes lugares, se va consolidando como pilar emblemático entre los eventos centrales previstos y en curso para celebrar el Año Internacional de la Astronomía IYA2009. Invitamos a las varias decenas de grupos de la Red de Astronomía de Colombia a que, asociados unos y otros, se preparen con actividades escalonadas y variadas de difusión y divulgación, en una programación continua que requiere relevos, para participar en la interesante propuesta de la UAI y cuyo objeto es llevar durante estas 100 horas ininterrumpidas la Astronomía a todo tipo de público. En una región se pueden hacer alianzas entre grupos de diferentes localidades vecinas, concertando voluntades para sumar fuerzas y compartir recursos en torno a este común propósito. Con ciclos de conferencias, programas de radio y televisión, películas y foros científicos, sesiones de planetario y observación astronómica, entre otras ideas, este interesante e impactante programa puede hacerse una realidad. Desde el OAM, Gonzalo Duque-Escobar http://www.manizales.unal.edu.co/oam_manizales/ __________________________________________________________ BIENVENIDA Damos la bienvenida a personas y grupos que se inscribieron por medio del servidor automático de Yahoogroups. -
Sky & Telescope
Eclipse from the See Sirius B: The Nearest Spot the Other EDGE OF SPACE p. 66 WHITE DWARF p. 30 BLUE PLANETS p. 50 THE ESSENTIAL GUIDE TO ASTRONOMY What Put the Bang in the Big Bang p. 22 Telescope Alignment Made Easy p. 64 Explore the Nearby Milky Way p. 32 How to Draw the Moon p. 54 OCTOBER 2013 Cosmic Gold Rush Racing to fi nd exploding stars p. 16 Visit SkyandTelescope.com Download Our Free SkyWeek App FC Oct2013_J.indd 1 8/2/13 2:47 PM “I can’t say when I’ve ever enjoyed owning anything more than my Tele Vue products.” — R.C, TX Tele Vue-76 Why Are Tele Vue Products So Good? Because We Aim to Please! For over 30-years we’ve created eyepieces and telescopes focusing on a singular target; deliver a cus- tomer experience “...even better than you imagined.” Eyepieces with wider, sharper fields of view so you see more at any power, Rich-field refractors with APO performance so you can enjoy Andromeda as well as Jupiter in all their splendor. Tele Vue products complement each other to pro- vide an observing experience as exquisite in performance as it is enjoyable and effortless. And how do we score with our valued customers? Judging by superlatives like: “in- credible, truly amazing, awesome, fantastic, beautiful, work of art, exceeded expectations by a mile, best quality available, WOW, outstanding, uncom- NP101 f/5.4 APO refractor promised, perfect, gorgeous” etc., BULLSEYE! See these superlatives in with 110° Ethos-SX eye- piece shown on their original warranty card context at TeleVue.com/comments. -
Title Spons Agency Bureau No Pub Date Contract Note
DOCUMENT LIZSUME ED 071' C87 82 015 524 TITLE Project Musics Reader 2,Motion in the Heavens. .INSTITUTION Harvard Univ., Cambridge,Mass. Harvard Project _Physics. SPONS AGENCY Office of Education (DREW), Washington, D.C.,Bureau of Research. BUREAU NO BK-5-1038 PUB DATE 68 CONTRACT 08C-5-10-058 NOTE 233p.; Authorized InterimVersion EDRS PRICE MF -$0.65 HC-89.87 _DESCRIPTORS Astronomy; Instructional Materials;.*Motion; *Physics; Science, Fiction;. Science Materials; _Secondary Grades; *Secondary School Science; *Space; *Supplementary Reading Materials IDENTIFIER'S Harvard Project Physics ABSTRACT As a supplement to.Projpct Physics Unit 2, specially, selected articles are presented in this reader for student browsing. _Eight excerpts are given under headings:,the starry messenger, Newton_. And the principia, an appreciation of the earth, space the unconquerable, Is there intelligent life beyond the earth3,11 the life story of a galaxy, expansion of the universe, and Dyson sphere. Seven book passages. are included under. the, headings of the black cloud, roll call, a night at the observatory, Repler's celestial music, universal gravitation, a table of stars within twenty-two light years that could have habitable planets, and three poetic _fragments about astronomy. The remaining articles includea preface to the books of the ,revolutions, Kepler, Kepler on. Mars, laws of ..motion and proposition one,, garden of Epicurus, a search for life on earth at Kilometer resolution, the. boy who redeemed his father's _name, great comet of 1965, gravity experiments, unidentified flying objects, and negative mass. Illustrations for explanationpurposes . are provided. The work of Harvard. Project Physics has been .financially supported by: the Carnegie Corporation of New York, the Ford. -
The Applicability of Far-Infrared Fine-Structure Lines As Star Formation
A&A 568, A62 (2014) Astronomy DOI: 10.1051/0004-6361/201322489 & c ESO 2014 Astrophysics The applicability of far-infrared fine-structure lines as star formation rate tracers over wide ranges of metallicities and galaxy types? Ilse De Looze1, Diane Cormier2, Vianney Lebouteiller3, Suzanne Madden3, Maarten Baes1, George J. Bendo4, Médéric Boquien5, Alessandro Boselli6, David L. Clements7, Luca Cortese8;9, Asantha Cooray10;11, Maud Galametz8, Frédéric Galliano3, Javier Graciá-Carpio12, Kate Isaak13, Oskar Ł. Karczewski14, Tara J. Parkin15, Eric W. Pellegrini16, Aurélie Rémy-Ruyer3, Luigi Spinoglio17, Matthew W. L. Smith18, and Eckhard Sturm12 1 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, 9000 Gent, Belgium e-mail: [email protected] 2 Zentrum für Astronomie der Universität Heidelberg, Institut für Theoretische Astrophysik, Albert-Ueberle Str. 2, 69120 Heidelberg, Germany 3 Laboratoire AIM, CEA, Université Paris VII, IRFU/Service d0Astrophysique, Bat. 709, 91191 Gif-sur-Yvette, France 4 UK ALMA Regional Centre Node, Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK 5 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK 6 Laboratoire d0Astrophysique de Marseille − LAM, Université Aix-Marseille & CNRS, UMR7326, 38 rue F. Joliot-Curie, 13388 Marseille CEDEX 13, France 7 Astrophysics Group, Imperial College, Blackett Laboratory, Prince Consort Road, London SW7 2AZ, UK 8 European Southern Observatory, Karl -
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, -
Gas Accretion from Minor Mergers in Local Spiral Galaxies⋆
A&A 567, A68 (2014) Astronomy DOI: 10.1051/0004-6361/201423596 & c ESO 2014 Astrophysics Gas accretion from minor mergers in local spiral galaxies? E. M. Di Teodoro1 and F. Fraternali1;2 1 Department of Physics and Astronomy, University of Bologna, 6/2, Viale Berti Pichat, 40127 Bologna, Italy e-mail: [email protected] 2 Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, The Netherlands Received 7 February 2014 / Accepted 28 May 2014 ABSTRACT We quantify the gas accretion rate from minor mergers onto star-forming galaxies in the local Universe using Hi observations of 148 nearby spiral galaxies (WHISP sample). We developed a dedicated code that iteratively analyses Hi data-cubes, finds dwarf gas-rich satellites around larger galaxies, and estimates an upper limit to the gas accretion rate. We found that 22% of the galaxies have at least one detected dwarf companion. We made the very stringent assumption that all satellites are going to merge in the shortest possible time, transferring all their gas to the main galaxies. This leads to an estimate of the maximum gas accretion rate of −1 0.28 M yr , about five times lower than the average star formation rate of the sample. Given the assumptions, our accretion rate is clearly an overestimate. Our result strongly suggests that minor mergers do not play a significant role in the total gas accretion budget in local galaxies. Key words. galaxies: interactions – galaxies: evolution – galaxies: kinematics and dynamics – galaxies: star formation – galaxies: dwarf 1. Introduction structures in the Universe grow by several inflowing events and have increased their mass content through a small number of The evolution of galaxies is strongly affected by their capabil- major mergers, more common at high redshifts, and through an ity of retaining their gas and accreting fresh material from the almost continuous infall of dwarf galaxies (Bond et al. -
Snake River Skies the Newsletter of the Magic Valley Astronomical Society
Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting MVAS President’s Message June 2018 Saturday, June 9th 2018 7:00pm at the Toward the end of last month I gave two presentations to two very different groups. Herrett Center for Arts & Science College of Southern Idaho. One was at the Sawtooth Botanical Gardens in their central meeting room and covered the spring constellations plus some simple setups for astrophotography. Public Star Party Follows at the The other was for the Sun Valley Company and was a telescope viewing session Centennial Observatory given on the lawn near the outdoor pavilion. The composition of the two groups couldn’t be more different and yet their queries and interests were almost identical. Club Officers Both audiences were genuinely curious about the universe and their questions covered a wide range of topics. How old is the moon? What is a star made of? Tim Frazier, President How many exoplanets are there? And, of course, the big one: Is there life out [email protected] there? Robert Mayer, Vice President The SBG’s observing session was rained out but the skies did clear for the Sun [email protected] Valley presentation. As the SV guests viewed the moon and Jupiter, I answered their questions and pointed out how one of Jupiter’s moons was disappearing Gary Leavitt, Secretary behind the planet and how the mountains on our moon were casting shadows into [email protected] the craters. Regardless of their age, everyone was surprised at the details they 208-731-7476 could see and many expressed their amazement at what was “out there”. -
190 Index of Names
Index of names Ancora Leonis 389 NGC 3664, Arp 005 Andriscus Centauri 879 IC 3290 Anemodes Ceti 85 NGC 0864 Name CMG Identification Angelica Canum Venaticorum 659 NGC 5377 Accola Leonis 367 NGC 3489 Angulatus Ursae Majoris 247 NGC 2654 Acer Leonis 411 NGC 3832 Angulosus Virginis 450 NGC 4123, Mrk 1466 Acritobrachius Camelopardalis 833 IC 0356, Arp 213 Angusticlavia Ceti 102 NGC 1032 Actenista Apodis 891 IC 4633 Anomalus Piscis 804 NGC 7603, Arp 092, Mrk 0530 Actuosus Arietis 95 NGC 0972 Ansatus Antliae 303 NGC 3084 Aculeatus Canum Venaticorum 460 NGC 4183 Antarctica Mensae 865 IC 2051 Aculeus Piscium 9 NGC 0100 Antenna Australis Corvi 437 NGC 4039, Caldwell 61, Antennae, Arp 244 Acutifolium Canum Venaticorum 650 NGC 5297 Antenna Borealis Corvi 436 NGC 4038, Caldwell 60, Antennae, Arp 244 Adelus Ursae Majoris 668 NGC 5473 Anthemodes Cassiopeiae 34 NGC 0278 Adversus Comae Berenices 484 NGC 4298 Anticampe Centauri 550 NGC 4622 Aeluropus Lyncis 231 NGC 2445, Arp 143 Antirrhopus Virginis 532 NGC 4550 Aeola Canum Venaticorum 469 NGC 4220 Anulifera Carinae 226 NGC 2381 Aequanimus Draconis 705 NGC 5905 Anulus Grahamianus Volantis 955 ESO 034-IG011, AM0644-741, Graham's Ring Aequilibrata Eridani 122 NGC 1172 Aphenges Virginis 654 NGC 5334, IC 4338 Affinis Canum Venaticorum 449 NGC 4111 Apostrophus Fornac 159 NGC 1406 Agiton Aquarii 812 NGC 7721 Aquilops Gruis 911 IC 5267 Aglaea Comae Berenices 489 NGC 4314 Araneosus Camelopardalis 223 NGC 2336 Agrius Virginis 975 MCG -01-30-033, Arp 248, Wild's Triplet Aratrum Leonis 323 NGC 3239, Arp 263 Ahenea -
Astronomy 2009 Index
Astronomy Magazine 2009 Index Subject Index 1RXS J160929.1-210524 (star), 1:24 4C 60.07 (galaxy pair), 2:24 6dFGS (Six Degree Field Galaxy Survey), 8:18 21-centimeter (neutral hydrogen) tomography, 12:10 93 Minerva (asteroid), 12:18 2008 TC3 (asteroid), 1:24 2009 FH (asteroid), 7:19 A Abell 21 (Medusa Nebula), 3:70 Abell 1656 (Coma galaxy cluster), 3:8–9, 6:16 Allen Telescope Array (ATA) radio telescope, 12:10 ALMA (Atacama Large Millimeter/sub-millimeter Array), 4:21, 9:19 Alpha (α) Canis Majoris (Sirius) (star), 2:68, 10:77 Alpha (α) Orionis (star). See Betelgeuse (Alpha [α] Orionis) (star) Alpha Centauri (star), 2:78 amateur astronomy, 10:18, 11:48–53, 12:19, 56 Andromeda Galaxy (M31) merging with Milky Way, 3:51 midpoint between Milky Way Galaxy and, 1:62–63 ultraviolet images of, 12:22 Antarctic Neumayer Station III, 6:19 Anthe (moon of Saturn), 1:21 Aperture Spherical Telescope (FAST), 4:24 APEX (Atacama Pathfinder Experiment) radio telescope, 3:19 Apollo missions, 8:19 AR11005 (sunspot group), 11:79 Arches Cluster, 10:22 Ares launch system, 1:37, 3:19, 9:19 Ariane 5 rocket, 4:21 Arianespace SA, 4:21 Armstrong, Neil A., 2:20 Arp 147 (galaxy pair), 2:20 Arp 194 (galaxy group), 8:21 art, cosmology-inspired, 5:10 ASPERA (Astroparticle European Research Area), 1:26 asteroids. See also names of specific asteroids binary, 1:32–33 close approach to Earth, 6:22, 7:19 collision with Jupiter, 11:20 collisions with Earth, 1:24 composition of, 10:55 discovery of, 5:21 effect of environment on surface of, 8:22 measuring distant, 6:23 moons orbiting, -
STARDUST Newsletter of the Royal Astronomical Society of Canada Edmonton Centre
STARDUST Newsletter of the Royal Astronomical Society of Canada Edmonton Centre May 2011 Volume 57 Issue 9 Maria Vergara of Oliver School stands by her award-winning astronomy display. Details on page 4. Inside this Issue Contact Information................................................................................................................................................page 2 Upcoming Events, Meetings, Deadlines, Announcements.....................................................................................page 3 President's Report....................................................................................................................................................page 3 Best Astronomy Award 2011..................................................................................................................................page 4 Book Donations.......................................................................................................................................................page 4 GA Logo Contest! ..................................................................................................................................................Page 5 Observers Report.....................................................................................................................................................page 5 The Planets..............................................................................................................................................................page 6 Stardust -
Spatial Variations and Evolution of PAH, Gas, and Dust Properties in Nearby Major Mergers S
Molecular Gas, Dust, and Star Formation in Galaxies Proceedings IAU Symposium No. 292, 2012 c International Astronomical Union 2013 T. Wong & J. Ott, eds. doi:10.1017/S1743921313001221 Spatial Variations and Evolution of PAH, Gas, and Dust Properties in Nearby Major Mergers S. Haan CSIRO Astronomy & Space Science, Marsfield NSW 2122, Australia email: [email protected] Abstract. Interactions and mergers of gas-rich galaxies are important drivers of galaxy evolu- tion, in particular in reshaping spirals and fueling powerful starbursts and supermassive nuclear black holes. Hubble Space Telescope observations of nuclei in merging galaxies have shown an increasing nuclear luminosity density in the optical/near-infrared light with advancing merger stage (Laine et al. 2003, Rossa et al. 2007, Veilleux et al. 2009, Haan et al. 2011a), suggesting an increase of nuclear starburst activity. To address the physical conditions in major mergers and excitation mechanisms such as shocks and starbursts, it is necessary to resolve the spa- tial variations of the warm dust, molecular gas, and ionized gas on subgalactic scales. Here we summarize the main results based on Spitzer IRS spectral mapping observations of a sample of eight nearby, IR-bright galaxies of the Toomre Sequence (Toomre & Toomre 1972) that span the range from early through mid- to late-stage major mergers (Haan et al. 2011b). We find that the cold molecular gas component as observed in the CO emission line does not correlate with the warm gas in early merger systems, leading to large spatial variations in the ratio of cold-to-warm molecular gas. In particular, the cold molecular gas distribution in NGC 4676 and NGC 6621 show a significant offset not only from the warm gas component, but also from the stellar (NIR) and dust distribution (PAH, mid-IR continuum). -
Spitzer IRS Spectral Mapping of the Toomre Sequence: Spatial
A Preprint typeset using LTEX style emulateapj v. 5/2/11 SPITZER IRS SPECTRAL MAPPING OF THE TOOMRE SEQUENCE: SPATIAL VARIATIONS OF PAH, GAS, AND DUST PROPERTIES IN NEARBY MAJOR MERGERS S. Haan1, L. Armus1, S. Laine1, V. Charmandaris2,3, J.D. Smith4, F. Schweizer5, B. Brandl6, A.S. Evans7,8, J.A. Surace1, T. Diaz-Santos2,1, P. Beirao˜ 1, E.J. Murphy5, S. Stierwalt1, J.E. Hibbard7,8, M. Yun9, T.H. Jarrett10 ABSTRACT We have mapped the key mid-IR diagnostics in eight major merger systems of the Toomre Sequence (NGC 4676, NGC 7592, NGC 6621, NGC 2623, NGC 6240, NGC 520, NGC 3921, and NGC 7252) using the Spitzer Infrared Spectrograph (IRS). With these maps, we explore the variation of the ionized-gas, PAH, and warm-gas (H2) properties across the sequence and within the galaxies. While the global PAH interband strength and ionized gas flux ratios ([Ne III]/[Ne II]) are similar to those of normal star forming galaxies, the distribution of the spatially resolved PAH and fine structure line flux ratios is significant different from one system to the other. Rather than a constant H2/PAH flux ratio, we find that the relation between the H2 and PAH fluxes is characterized by a power law with a roughly constant exponent (0.61 ± 0.05) over all merger components and spatial scales. While following the same power law on local scales, three galaxies have a factor of ten larger integrated (i.e. global) H2/PAH flux ratio than the rest of the sample, even larger than what it is in most nearby AGNs.