The Ultimate Guide to STARGAZING
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Nuclear Star Formation in NGC 6240
A&A 415, 103–116 (2004) Astronomy DOI: 10.1051/0004-6361:20034183 & c ESO 2004 Astrophysics Nuclear star formation in NGC 6240 A. Pasquali1,2,J.S.Gallagher3, and R. de Grijs4 1 ESO/ST-ECF, Karl-Schwarzschild-Strasse 2, 85748 Garching bei M¨unchen, Germany 2 Institute of Astronomy, ETH H¨onggerberg, 8093 Z¨urich, Switzerland 3 University of Wisconsin, Department of Astronomy, 475 N. Charter St., Madison WI 53706, USA e-mail: [email protected] 4 University of Sheffield, Department of Physics and Astronomy, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK e-mail: [email protected] Received 12 August 2003 / Accepted 6 November 2003 Abstract. We have made use of archival HST BVIJH photometry to constrain the nature of the three discrete sources, A1, A2 and B1, identified in the double nucleus of NGC 6240. STARBURST99 models have been fitted to the observed colours, under the assumption, first, that these sources can be treated as star clusters (i.e. single, instantaneous episodes of star formation), and subsequently as star-forming regions (i.e. characterised by continuous star formation). For both scenarios, we estimate ages as young as 4 million years, integrated masses ranging between 7 106 M (B1) and 109 M (A1) and a rate of 1 supernova per × 1 year, which, together with the stellar winds, sustains a galactic wind of 44 M yr− . In the case of continuous star formation, 1 a star-formation rate has been derived for A1 as high as 270 M yr− , similar to what is observed for warm Ultraluminous 3 Infrared Galaxies (ULIRGs) with a double nucleus. -
Studies on the Formation, Evolution, and Destruction of Massive Star Clusters Cover: Photograph Taken at White Sands, New Mexico
Studies on the Formation, Evolution, and Destruction of Massive Star Clusters Cover: Photograph taken at White Sands, New Mexico. Courtesy of Matt Robertson. Printed by MultiCopy, Utrecht ISBN 90–393–0502–1 Studies on the Formation, Evolution, and Destruction of Massive Star Clusters Studie van de Vorming, Evolutie, en Destructie van Massieve Sterclusters (met een samenvatting in het Nederlands) Proefschrift ter verkrijging van de graad van doctor aan de Universiteit Utrecht op gezag van de Rector Magnificus, Prof. Dr. W.H. Gispen, ingevolge het besluit van het College voor Promoties in het openbaar te verdedigen op donderdag 21 april 2005 des middags te 12.45 uur door Nathan John Bastian geboren op 22 March 1978, te Milwaukee Promoter: prof. dr Henny J.G.L.M. Lamers Sterrenkundig Instituut, Universiteit Utrecht Co-Promoter: dr Markus Kissler-Patig European Southern Observatory This research has been supported in part by the Nether- lands Organization for Scientific Research (NWO). Additional support has come from the European South- ern Observatory (ESO). Contents 1 Introduction 1 1.1 Introduction to Extragalactic Star Clusters . 1 1.1.1 The Milky Way Bias . 1 1.1.2 The copious environments of young star clusters . 2 1.2 This Thesis . 5 1.2.1 Cluster Populations . 5 1.2.2 Dynamical Studies of the Massive Star Cluster W3 in the Merger Remnant NGC 7252 . 10 1.2.3 Cluster Complexes . 10 1.2.4 Future Plans . 13 Part A: The Cluster Population of M 51 15 2 Clusters in the Inner Spiral Arms of M 51: The cluster IMF and the formation history 17 2.1 Introduction . -
FY13 High-Level Deliverables
National Optical Astronomy Observatory Fiscal Year Annual Report for FY 2013 (1 October 2012 – 30 September 2013) Submitted to the National Science Foundation Pursuant to Cooperative Support Agreement No. AST-0950945 13 December 2013 Revised 18 September 2014 Contents NOAO MISSION PROFILE .................................................................................................... 1 1 EXECUTIVE SUMMARY ................................................................................................ 2 2 NOAO ACCOMPLISHMENTS ....................................................................................... 4 2.1 Achievements ..................................................................................................... 4 2.2 Status of Vision and Goals ................................................................................. 5 2.2.1 Status of FY13 High-Level Deliverables ............................................ 5 2.2.2 FY13 Planned vs. Actual Spending and Revenues .............................. 8 2.3 Challenges and Their Impacts ............................................................................ 9 3 SCIENTIFIC ACTIVITIES AND FINDINGS .............................................................. 11 3.1 Cerro Tololo Inter-American Observatory ....................................................... 11 3.2 Kitt Peak National Observatory ....................................................................... 14 3.3 Gemini Observatory ........................................................................................ -
Carl Sagan (1934-1996) American Astronomer, Astrophysicist, Cosmologist, Author, Science Popularizer and Science Communicator in Astronomy and Natural Sciences
Carl Sagan (1934-1996) American astronomer, astrophysicist, cosmologist, author, science popularizer and science communicator in astronomy and natural sciences Vega (Alpha Lyrae) The fifth brightest star in the night sky and the second brightest star in the northern celestial hemisphere, after Arcturus. It is a relatively close star at only 25 light-years from Earth, and, together with Arcturus and Sirius, one of the most luminous stars in the Sun's neighborhood. Vega's spectral class is A0V, making it a blue-tinged white main sequence star that is fusing hydrogen to helium in its core. Vega will become a class-M red giant and shed much of its mass, finally becoming a white dwarf. Summer Triangle Mythology of Lyra In Greek mythology LYRA represents the instrument which was a gift from Apollo to his son Orpheus. The latter's bride, the beautiful Eurydice, had been killed by a viper and was lost in the underworld. Orpheus set out to try to save her and played such sweet music on his lyre that Hades, King of the Underworld, was charmed into giving permission for Eurydice to follow her husband home. He made one proviso, however, that Orpheus should not turn back to look at Eurydice until they were safely out of Hell. The pair set off but, at the very last moment, Orpheus could not resist turning round to see if Eurydice was following him and she was lost forever. Roman mosaic Museo Archeological Regionale di Palermo Orpheus with the lyre and surrounded by beasts (Byzantine & Christian Museum, Athens) Able to charm all living things and even stones with his music Nymphs Listening to the Songs of Orpheus Charles Francois Jalabert - 1853 M57 (NGC 6720) is a planetary nebula formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star passing through the last stage in its evolution before becoming a white dwarf. -
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 -
Cycle 10 Approved Programs
March 2001 • Volume 18, Number 1 SPACE TELESCOPE SCIENCE INSTITUTE Highlights of this Issue: • Grants Management System — page 3 • NGST News — page 6 • IRAF and Python Newsletter — page 19 Astronomer’s Proposal Tools Steve Lubow, [email protected] TScI is developing a new • The Bright Object Tool will allow generation of proposal users to check proposed observations Cycle 10 S preparation tools called for instrumental health-and-safety, as the Astronomer’s Proposal Tools well as science problems (such as (APT).These tools are based on the bleeding). The tool will allow users to Who got time on HST to do what ... Scientist’s Expert Assistant (SEA) display the results graphically in the project which began in 1997 at the VTT or read the results in a table. How the selection process worked ... Advanced Architectures and Automa- • Exposure time calculators will be tion Branch of Goddard Space Flight enhanced to provide graphical Center. The APT aims to improve the displays, such as exposure time as a proposal preparation process in order function of signal to noise. page 11 Approved to provide users with a more intuitive, visual, and interactive experience by • Spreadsheet-like editors will be means of state of the art technology. provided for users to enter proposal Programs Another goal is to make these tools continued page 3 generic so that they can be easily shared for use in creating proposal preparation systems by other observatories. Tools that are currently under 10 development are: • The Visual Target Tuner (VTT) was initially released in June, 2000. This tool displays HST apertures superim- posed on sky images (right). -
Appendix Appendix
Appendix Appendix Abbreviations Here general abbreviations, as used in the text, are explained. Excluded: galaxy classifica- tion (Table 1.2), catalog designations and names (Chapter 3), publications (see next Appendices), or directions (e.g., NW). AGN Active galactic nucleus BCD Blue compact dwarf (galaxy) BSO Blue stellar object CCD Charge coupled device CDM Cold dark matter DSS Digital Sky Survey fst Faintest star GA Great attractor GC Globular cluster GRB Gamma ray burst HII HII region HDF Hubble Deep Field HST Hubble Space Telescope LBV Luminous blue variable LF Luminosity function LG Local Group LPR Light pollution reduction (filter) LSB Low surface brightness (galaxy) OC Open cluster PN Planetary nebula POSS Palomar Observatory Sky Survey QSO Quasi stellar object (quasar) SC Star cloud SCT Schmidt-Cassegrain telescope SDSS Sloan Digital Sky Survey SSC Super star cluster UHC Ultra high contrast (filter) ULIRG Ultra luminous infrared galaxy WR Wolf-Rayet (galaxy) ZOA Zone of avoidance 230 General Literature Books on Galaxies and Related Subjects Appendix Binney, J., Merrifield, M., Galactic Astronomy, Princeton University Press, Princeton, NJ, 1998 Bok, B. J., Bok, P. F., The Milky Way, Harvard University Press, Cambridge, MA, 1981 Combes, F., Boisse, P., Mazure, A., Blanchard, A., Galaxies and Cosmology, Springer- Verlag, Heidelberg, 2002 Elmegreen, D. M., Galaxies and Galactic Structure, Prentice-Hall Inc., Upper Saddle River, NJ, 1998 Ferris, T., Galaxies, Stewart, Tabori & Chang Publ., New York, NY, 1982 Hodge, P. W., Galaxies, Harvard University Press, Cambridge, MA, 1986 Hubble, E. P., Realm of the Nebulae, Dover Publ., Mineola, NY, 1958 Jones, M., Lambourne, R. (eds), An Introduction to Galaxies and Cosmology, Cambridge University Press, Cambridge, 2004 Keel, C. -
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. -
Selected Hubble Image Descriptions
Background on HST Images on Lesson Slides Disk • Information given in same order as images in HST directory on lesson slides on disk. • Information taken from STScI's hubblesite.org. • Image numbers from STScI's catalogue. Einstein Cross, Image 1990-20 The European Space Agency's Faint Object Camera on board NASA's Hubble Space Telescope has provided astronomers with the most detailed image ever taken of the gravitational lens G2237 + 0305--sometimes referred to as the "Einstein Cross.” The photograph shows four images of a very distant quasar which has been multiple-imaged by a relatively nearby galaxy acting as a gravitational lens. Black Eye Galaxy, 2004-04 A collision of two galaxies has left a merged star system with an unusual appearance as well as bizarre internal motions. Messier 64 (M64) has a spectacular dark band of absorbing dust in front of the galaxy's bright nucleus, giving rise to its nicknames of the "Black Eye" or "Evil Eye" galaxy. Dusty Spiral Galaxy, NGC 1275, Image 2003-14 A dusty spiral galaxy appears to be rotating on edge, like a pinwheel, as it slides through the larger, bright galaxy NGC 1275, in this HST image. These images show traces of spiral structure accompanied by dramatic dust lanes and bright blue regions that mark areas of active star formation. Face On Galaxy, NGC 4622, Image 2002-03 Astronomers have found a spiral galaxy that may be spinning to the beat of a different cosmic drummer. To the surprise of astronomers, the galaxy, called NGC 4622, appears to be rotating in the opposite direction to what they expected. -
Veil Nebula Veil Nebula 20 51 28 +31 00 06 ‐ 3° Cygnus Supernova Remnant
Downloaded from www.faintfuzzies.com 1 www.deepskyforum.com Downloaded from www.faintfuzzies.com 2 www.deepskyforum.com Deep Sky Forum 2012 Objects of the Week Compiled and edited by Alvin H. Huey www.faintfuzzies.com Last updated: Feb 04, 2013 Downloaded from www.faintfuzzies.com 3 www.deepskyforum.com www.faintfuzzies.com First edition: February 2013 All Maps by MegaStarTM v5 All DSS images (Digital Sky Survey) http://archive.stsci.edu/dss/acknowledging.html All SDSS images (Sloan Digital Sky Survey) http://www.sdss.org/ Downloaded from www.faintfuzzies.com 4 www.deepskyforum.com Table of Contents Forward 6 How to Use the Atlas 7 OOTW List 8 OOTW Atlas 12 Downloaded from www.faintfuzzies.com 5 www.deepskyforum.com Forward This month marks the one year anniversary of DeepSkyForum.com and we couldn't be more pleased! Over the past year DSF has grown beyond our wildest expectations with nearly 300 members and 1500+ posts discussing deep sky observing! It's all positive news and we're very happy! It wouldn't have been possible if it weren't for you, our members. You folks have accepted DSF with open arms and made it a premier destination for deep sky observing discussion. DSF has become such a huge repository of information in such a short time and for that we're forever grateful. It’s become difficult to go and observe without first stopping by the site. When we first started DSF we introduced something that many of you have been a part of. Every week on Sunday, a new and interesting object is chosen to be the Object of the Week (OOTW). -
GOALS: the Great Observatories All-Sky LIRG Survey
GOALS: The Great Observatories All-sky LIRG Survey L. Armus1, et al. ABSTRACT The Great Observatories All-sky LIRG Survey (GOALS) combines data from NASA’s Spitzer, Hubble, Chandra and GALEX observatories in a comprehensive imaging and spectroscopic survey of over 200 low redshift (z < 0.088), Luminous Infrared Galaxies (LIRGs). The LIRGs are a complete subset of the IRAS Re- vised Bright Galaxy Sample (RBGS), which comprises 629 extragalactic objects with 60µm flux densities above 5.24 Jy, and Galactic latitudes above five degrees. The LIRGs targeted in GOALS span the full range of nuclear spectral types de- fined via traditional optical line-ratio diagrams (type-1 and type-2 AGN, LINERs, and starbursts) as well as interaction stages (major mergers, minor mergers, and isolated galaxies). They provide an unbiased picture of the processes responsible for enhanced infrared emission in galaxies in the local Universe. As an exam- ple of the analytic power of the multi-wavelength GOALS dataset, we present Spitzer, Chandra, GALEX and HST images and spectra for the interacting sys- tem VV 340 (IRAS F14547+2449). The Spitzer MIPS imaging data indicates 11 that between 80 − 95% of the total far-infrared emission (or about 5 × 10 L⊙) originates in VV340 North. While the IRAC colors of VV340 North and South are consistent with star-forming galaxies, both the Spitzer IRS and Chandra ACS data indicate the presence of an AGN in VV340 North. The observed line fluxes, without correction for extinction, imply the AGN accounts for less than 10−20% of the observed infrared emission. -
First Results from Gems/GSAOI for Project SUNBIRD: Supernovae Unmasked by Infra-Red Detection
MNRAS 000,1{19 (2017) Preprint 13 November 2018 Compiled using MNRAS LATEX style file v3.0 First results from GeMS/GSAOI for project SUNBIRD: Supernovae UNmasked By Infra-Red Detection E. C. Kool1;2?, S. Ryder2, E. Kankare3, S. Mattila4, T. Reynolds4, R. M. McDermid1;2, M. A. P´erez-Torres5, R. Herrero-Illana6, M. Schirmer7, A. Efstathiou8, F. E. Bauer9;10;11, J. Kotilainen12;4, P. V¨ais¨anen13, C. Baldwin1, C. Romero-Ca~nizales10;14 and A. Alberdi5 1Department of Physics and Astronomy, Macquarie University, NSW 2109, Australia 2Australian Astronomical Observatory, 105 Delhi Rd, North Ryde, NSW 2113, Australia 3Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK 4Tuorla observatory, Department of Physics and Astronomy, University of Turku, V¨ais¨al¨antie 20, FI-21500 Piikki¨o, Finland 5Instituto de Astrof´ısica de Andaluc´ıa(CSIC), Glorieta de la Astronom´ıas/n, E-18080 Granada, Spain 6European Southern Observatory (ESO), Alonso de C´ordova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile 7Gemini Observatory, Casilla 603, La Serena, Chile 8School of Sciences, European University Cyprus, Diogenes Street, Engomi, 1516 Nicosia, Cyprus 9Instituto de Astrof´ısica and Centro de Astroingenier´ıa, Pontificia Universidad Cat´olica de Chile, Casilla 306, Santiago 22, Chile 10Millennium Institute of Astrophysics (MAS), Nuncio Monse~nor S´otero Sanz 100, Providencia, Santiago, Chile 11Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, Colorado 80301 12Finnish Centre for Astronomy with ESO (FINCA), University of Turku, V¨ais¨al¨antie 20, FI-21500 Piikki¨o, Finland 13South African Astronomical Observatory, P.O.Box 9, Observatory 7935, Cape Town, South Africa 14N´ucleo de Astronom´ıade la Facultad de Ingenier´ıa y Ciencias, Universidad Diego Portales, Av.