Open Cluster Remnants : an Observational Overview
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Messier Objects
Messier Objects From the Stocker Astroscience Center at Florida International University Miami Florida The Messier Project Main contributors: • Daniel Puentes • Steven Revesz • Bobby Martinez Charles Messier • Gabriel Salazar • Riya Gandhi • Dr. James Webb – Director, Stocker Astroscience center • All images reduced and combined using MIRA image processing software. (Mirametrics) What are Messier Objects? • Messier objects are a list of astronomical sources compiled by Charles Messier, an 18th and early 19th century astronomer. He created a list of distracting objects to avoid while comet hunting. This list now contains over 110 objects, many of which are the most famous astronomical bodies known. The list contains planetary nebula, star clusters, and other galaxies. - Bobby Martinez The Telescope The telescope used to take these images is an Astronomical Consultants and Equipment (ACE) 24- inch (0.61-meter) Ritchey-Chretien reflecting telescope. It has a focal ratio of F6.2 and is supported on a structure independent of the building that houses it. It is equipped with a Finger Lakes 1kx1k CCD camera cooled to -30o C at the Cassegrain focus. It is equipped with dual filter wheels, the first containing UBVRI scientific filters and the second RGBL color filters. Messier 1 Found 6,500 light years away in the constellation of Taurus, the Crab Nebula (known as M1) is a supernova remnant. The original supernova that formed the crab nebula was observed by Chinese, Japanese and Arab astronomers in 1054 AD as an incredibly bright “Guest star” which was visible for over twenty-two months. The supernova that produced the Crab Nebula is thought to have been an evolved star roughly ten times more massive than the Sun. -
New Catalogue of Optically Visible Open Clusters and Candidates ?
View metadata, citation and similar papers at core.ac.uk brought to you by CORE Astronomy & Astrophysics manuscript no. provided by CERN Document Server (will be inserted by hand later) New catalogue of optically visible open clusters and candidates ? W. S. Dias1,B.S.Alessi1,A.Moitinho2,andJ.R.D.L´epine1 1 Universidade de S~ao Paulo, Dept. de Astronomia, CP 3386, S~ao Paulo 01060-970, Brazil 2 Observatorio Astron´omico Nacional, UNAM, Apdo. Postal 877, C.P. 22800, Ensenada B.C., M´exico Received <date>/ Accepted <date> Abstract. We have compiled a new catalogue of open clusters in the Galaxy which updates the previous catalogues of Lyng˚a (1987) and of Mermilliod (1995) (included in the WEBDA database). New objects and new data, in particular, data on kinematics (proper motions) that were not present in the old catalogues, have been included. Virtually all the clusters (1537) presently known were included, which represents an increment of about 347 objects relative to the Lyng˚a (1987) catalogue. The catalogue is presented in a single table containing all the important data, which makes it easy to use. The catalogue can be accessed on line either at http://www.iagusp.usp.br/~wilton/ or as an electronic table which will be made available at the CDS. Key words. Galaxy: open clusters and associations: general - Catalogue 1. Introduction by Loktin et al. (2000) and the discussion of the prob- lem of the differences in the distances obtained with par- In this work, we introduce a new catalogue of the open allaxes and by photometric main sequence fitting (see clusters of our Galaxy. -
The Messier Catalog
The Messier Catalog Messier 1 Messier 2 Messier 3 Messier 4 Messier 5 Crab Nebula globular cluster globular cluster globular cluster globular cluster Messier 6 Messier 7 Messier 8 Messier 9 Messier 10 open cluster open cluster Lagoon Nebula globular cluster globular cluster Butterfly Cluster Ptolemy's Cluster Messier 11 Messier 12 Messier 13 Messier 14 Messier 15 Wild Duck Cluster globular cluster Hercules glob luster globular cluster globular cluster Messier 16 Messier 17 Messier 18 Messier 19 Messier 20 Eagle Nebula The Omega, Swan, open cluster globular cluster Trifid Nebula or Horseshoe Nebula Messier 21 Messier 22 Messier 23 Messier 24 Messier 25 open cluster globular cluster open cluster Milky Way Patch open cluster Messier 26 Messier 27 Messier 28 Messier 29 Messier 30 open cluster Dumbbell Nebula globular cluster open cluster globular cluster Messier 31 Messier 32 Messier 33 Messier 34 Messier 35 Andromeda dwarf Andromeda Galaxy Triangulum Galaxy open cluster open cluster elliptical galaxy Messier 36 Messier 37 Messier 38 Messier 39 Messier 40 open cluster open cluster open cluster open cluster double star Winecke 4 Messier 41 Messier 42/43 Messier 44 Messier 45 Messier 46 open cluster Orion Nebula Praesepe Pleiades open cluster Beehive Cluster Suburu Messier 47 Messier 48 Messier 49 Messier 50 Messier 51 open cluster open cluster elliptical galaxy open cluster Whirlpool Galaxy Messier 52 Messier 53 Messier 54 Messier 55 Messier 56 open cluster globular cluster globular cluster globular cluster globular cluster Messier 57 Messier -
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, -
Characterization of Open Cluster Remnants
Astronomy & Astrophysics manuscript no. 6240 c ESO 2021 June 14, 2021 Characterization of open cluster remnants ⋆ D. B. Pavani1,2 and E. Bica2 1 Instituto de Astronomia, Geof´ısica e Ciˆencias Atmosf´ericas (IAG) Universidade de S˜ao Paulo - Rua do Mat˜ao 1226; 05508-900, S˜ao Paulo, SP; Brazil e-mail: [email protected] 2 Universidade Federal do Rio Grande do Sul, IF, CP 15051; 912501-970, Porto Alegre, RS; Brazil e-mail: [email protected] ABSTRACT Context. Despite progress in the theoretical knowledge of open cluster remnants and the growing search for observational identifications in recent years, open questions still remain. The methods used to analyze open cluster remnants and criteria to define them as physical systems are not homogeneous. In this work we present a systematic method for studying these objects that provides a view of their properties and allows their characterization. Aims. Eighteen remnant candidates are analyzed by means of photometric and proper motion data. These data provide information on objects and their fields. We establish criteria for characterizing open cluster remnants, taking observational uncertainties into account. Methods. 2MASS J and H photometry is employed (i) to study structural properties of the objects by means of radial stellar density profiles, (ii) to test for any similarity between objects and fields with a statistical comparison method applied to the distributions of stars in the CMDs, and (iii) to obtain ages, reddening values, and distances from the CMD, taking an index of isochrone fit into account. The UCAC2 proper motions allowed an objective comparison between objects and large solid angle offset fields. -
January 2006 Volume 13 Issue 3 the Cranky Curmudgeon Ponders Red Shift HAA Telescope Clinic Summary
Hamilton Amateur Astronomers JanuaryEvent 2006 Horizon Volume 13 Issue 3 The Cranky Curmudgeon Ponders Red Shift HAA Telescope Clinic Summary by Bill Tekatch by Mike Jefferson January 06/06 Teamsters Hall, 460 Parkdale N., Ever since Edwin Hubble found that the red shift Hamilton, ON of galaxies increased with distance, red shift has been a At the HAA Telescope Clinic there were about 23 keystone topic in cosmology. While the professional sci- people in attendance to give and get help in the oper- entific community now recognises that the galaxies are ation of newly acquired optical equipment from Christ- not moving away from us at great speeds, they still use mas, 2005. John ‘Galileo’ Gauvreau spent consider- terminology as if that were the case. They know that it able time helping his student Maggie and her husband is space itself that is expanding, ever increasing the dis- work through the operation of their new mirror lens tance between distant-galaxies. I say distant-galaxies spotter, while Mike Spicer (in his usual, very profes- because the galaxies in our local group are not separat- sional attire) entertained numerous listeners with tales ing from each other. of the mysteries of “Optics Through the Looking Glass”! So through the years, various explanations were pro- GOTO’s that set themselves up automatically, a ‘queen posed for the cause of red shift from the Doppler Effect, of hearts’ refractor, telescopes easy enough to be oper- to tired light, to the current General relativity stretch. ated by children and cheap ways of circumventing ex- General relativity theory allows the expanding space to pensive methods were just some of the ‘enigma varia- stretch light. -
Aquarius, the Watering Can Man by Magda Streicher [email protected]
deepsky delights Aquarius, the Watering Can Man by Magda Streicher [email protected] Aquarius is by no means just another constellation – it’s quite simply something exceptional in its own right. Aquarius the Image source: Stellarium water-bearer spreads out its lanky image just north of Capricornus the sea-goat. Other ier, the French astronomer. Averted vision well-known water constellations are Piscis yields the best view, which sees the object Austrinus the southern fish, Cetus the whale, brightening relatively quickly to a core that Delphinus the dolphin and Hydra the water appears slightly more square than round and snake. The water-bearer was so named due less concentrated than most globulars. Not to the Sun’s entry into the constellation dur- at all easy to resolve, although I can pick up ing the Babylonian monsoon season. The a grainy tangerine skin impression, which image portrays a man pouring water from a makes me suspect partial resolution. pitcher he’s holding in his right hand. Little sprays of brighter stars look like numerous Just 1.2 degrees to the east, arguably one of drops of water and stand out well against the most interesting documented clusters or the fainter background star-field. When star asterisms can be seen. NGC 6994, bet- Aquarius is about appear in the east, Albali, ter known as Messier 73, consists of a cluster or Epsilon Aquarii, at magnitude 3.7, pops of only four stars, which the University of up as the western-most star in the constella- Padua in Italy places at different distances as tion, as if to say “Here I am!” field stars. -
The Age of Aquarius Is an Astrological Term Denoting Either the Current Or Upcoming Astrological Age, Depending on the Method of Calculation
The Age of Aquarius is an astrological term denoting either the current or upcoming astrological age, depending on the method of calculation. Astrologers maintain that an astrological age is a product of the earth's slow precessional rotation and lasts for 2,150 years, on average. In popular culture in the United States, the Age of Aquarius refers to the advent of the New Age movement in the 1960s and 1970s. There are various methods of calculating the length of an astrological age. In sun- sign astrology, the first sign is Aries, followed by Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces, whereupon the cycle returns to Aries and through the zodiacal signs again. Astrological ages, however, proceed in the opposite direction ("retrograde" in astronomy). Therefore, the Age of Aquarius follows the Age of Pisces. Mythology of the constellation Aquarius This is the eleventh zodiacal sign and one which has always been connected with water. To the Babylonians it represented an overflowing urn, and they associated this with the heavy rains which fell in their eleventh month, whilst the Egyptians saw the constellation as Hapi, the god of the Nile. Greek legend, however, tells of Ganymede, an exceptionally handsome, young prince of Troy. He was spotted by Zeus, who immediately decided that he would make a perfect cup-bearer. The story then differs - one version telling how Zeus sent his pet eagle, Aquila, to carry Ganymede to Olympus, another that it was Zeus, himself, disguised as an eagle, who swept up the youth and carried him to the home of the gods. -
The GALAH Survey and Gaia
MNRAS 480, 5242–5259 (2018) doi:10.1093/mnras/sty2171 Advance Access publication 2018 August 13 The GALAH survey and Gaia DR2: (non-)existence of five sparse high-latitude open clusters Downloaded from https://academic.oup.com/mnras/article-abstract/480/4/5242/5071959 by University of Southern Queensland user on 15 February 2019 Janez Kos,1‹ Gayandhi de Silva,1,2 Sven Buder ,3† Joss Bland-Hawthorn,1,4,5 Sanjib Sharma,1 Martin Asplund,4,6 Valentina D’Orazi,7 Ly Duong,6 Ken Freeman,6 Geraint F. Lewis,1 Jane Lin,4,6 Karin Lind,3,8 Sarah L. Martell ,3,9 Katharine J. Schlesinger,6 Jeffrey D. Simpson ,9 Daniel B. Zucker,10 Tomazˇ Zwitter ,11 Timothy R. Bedding,1,13 Klemen Cotar,ˇ 11 Jonathan Horner,12 Thomas Nordlander,4,6 Denis Stello,9,13 Yuan-Sen Ting14,15,16 and Gregor Traven11 1Sydney Institute for Astronomy, School of Physics A28, The University of Sydney, NSW 2006, Australia 2AAO-MQ, Macquarie University, Sydney 2109, Australia 3Max Planck Institute for Astronomy (MPIA), Koenigstuhl 17, D-69117 Heidelberg, Germany 4ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO-3D), Australia 5Sydney Astrophotonic Instrumentation Labs, School of Physics, A28, The University of Sydney, Camperdown, NSW 2006, Australia 6Research School of Astronomy & Astrophysics, Australian National University, Canberra, ACT 2611, Australia 7Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, vicolo dell’Osservatorio 5, I-35122, Padova, Italy 8Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, -
Telescope at the Foot of Table Mountain
Volume 75 Nos 11 & 12 December 2016 Volume 75 Nos 11 & 12 December 2016 CONTENTS Editorial .................................................................................................................................. 251 SALT's excellence and achievements recognised by DST ........................................................... 253 News Note: KBO Occultation ................................................................................................... 255 Private Observatories in SA ..................................................................................................... 256 Klein Karoo Observatory ............................................................................................................................ 257 Cederberg Observatory ............................................................................................................................... 260 Centurion Planetary and Lunar Observatory ....................................................................................... 261 La Marischel Observatory .......................................................................................................................... 264 Sterkastaaing Observatory ........................................................................................................................ 266 Henley on Klip observatory ....................................................................................................................... 267 Archer Observatory .................................................................................................................................... -
Charles Messier (1730-1817) Was an Observational Astronomer Working
Charles Messier (1730-1817) was an observational Catalogue (NGC) which was being compiled at the same astronomer working from Paris in the eighteenth century. time as Messier's observations but using much larger tele He discovered between 15 and 21 comets and observed scopes, probably explains its modern popularity. It is a many more. During his observations he encountered neb challenging but achievable task for most amateur astron ulous objects that were not comets. Some of these objects omers to observe all the Messier objects. At «star parties" were his own discoveries, while others had been known and within astronomy clubs, going for the maximum before. In 1774 he published a list of 45 of these nebulous number of Messier objects observed is a popular competi objects. His purpose in publishing the list was so that tion. Indeed at some times of the year it is just about poss other comet-hunters should not confuse the nebulae with ible to observe most of them in a single night. comets. Over the following decades he published supple Messier observed from Paris and therefore the most ments which increased the number of objects in his cata southerly object in his list is M7 in Scorpius with a decli logue to 103 though objects M101 and M102 were in fact nation of -35°. He also missed several objects from his list the same. Later other astronomers added a replacement such as h and X Per and the Hyades which most observers for M102 and objects 104 to 110. It is now thought proba would feel should have been included. -
Catálogo Messier Para Observaciones De Cielo Profundo
Catálogo Messier para observaciones de Cielo Profundo ÍNDICE M1 ………………………………………….…3 M28 ……………………………………….38 M2 ……………………………………….…....5 M29 ……………………………………….39 M3 …………………………………………….7 M30 ……………………………………….40 M4 …..………………………………………...9 M31 ……………………………………….41 M5 …..………………………………………..11 M32 ……………………………………….44 M6 …..…………………….………………….13 M33 ……………………………………….46 M7 …..……………………….……………….14 M34 ……………………………………….47 M8 …..………………………….…………….15 M35 ……………………………………….48 M9 …..…………………………….………….16 M36 ……………………………………….50 M10 ….……………………………………….18 M37 ……………………………………….51 M11 ….……………………………………….19 M38 ……………………………………….52 M12 ….……………………………………….20 M39 ……………………………………….53 M13 ….……………………………………….21 M40 ……………………………………….54 M14 ….……………………………………..…22 M41 ……………………………………….55 M15 ….………………………………………..24 M42 ……………………………………….56 M16 ….…………………………………….….26 M43 ……………………………………….58 M17 ….………………………………….….…27 M44 ……………………………………….59 M18 ….………………………………….….…28 M45 ……………………………………….60 M19 ….……………………………………..…29 M46 ……………………………………….63 M20 ….…………………………………….….30 M47 ……………………………………….64 M21 ….…………………………………….….31 M48 ……………………………………….65 M22 ….………………………………….….…32 M49 ……………………………………….66 M23 ….………………………………….….…33 M50 ……………………………………….67 M24 ….………………………………….….…34 M51 ……………………………………….68 M25 ….………………………………….….…35 M52 ……………………………………….69 M26 ….………………………………….….…36 M53 ……………………………………….70 M27 ….……………………………………..…37 M54 ……………………………………….71 1 Catálogo Messier para observaciones de Cielo Profundo M55 …………………………………………....72 M85 ………………………………….………109 M56 ……………………………………………73 M86 ………………………………….………110 M57 ……………………………………………74 M87 ………………………………….………111