DOCSLIB.ORG

Caldwell Catalogue

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Caldwell Catalogue CALDWELL CATALOGUE 1 Caldwell Catalog Distance Viewing C NGC Type Mag RA Dec Constellation Common Name (ly) Season 1 188 Open Cluster 8.1 4800 00:44.4 +85:20 Cepheus autumn 240 Planetary Nebula 11.6 3500 00:13.0 +72:32 Cepheus autumn Bow Tie Nebula 3 4236 Spiral Galaxy 9.7 7 million 12:16.7 +69:28 Draco spring 4 7023 Bright Nebula 6.8 1400 21:01.8 +68:12 Cepheus autumn Iris Nebula 5 IC 342 Spiral Galaxy 9.2 13 million 03:46.8 +68:06 Camalopardalis winter 6 6543 Planetary Nebula 8.8 3000 17:58.6 +66:38 Draco summer Cat's Eye Nebula 7 2403 Spiral Galaxy 8.9 14 million 07:36.9 +65:36 Camalopardalis winter 8 559 Open Cluster 9.5 3700 01:29.5 +63:18 Cassiopeia autumn 9 Sh2-155 Bright Nebula 7.7 2800 22:56.8 +62:37 Cepheus autumn Cave Nebula 10 663 Open Cluster 7.1 7200 01:46.0 +61:15 Cassiopeia autumn 11 7635 Bright Nebula 7 7100 23:20.7 +61:12 Cassiopeia autumn Bubble nebula 12 6946 Spiral Galaxy 9.7 18 million 20:34.8 +60:09 Cepheus summer 13 457 Open Cluster 6.4 - 01:19.1 +58:20 Cassiopeia autumn Owl or E.T. Cluster 14 869/884 Open Cluster 4.3 7300 02:20.0 +57:08 Perseus autumn Double Cluster, h & chi Persei 15 6826 Planetary Nebula 9.8 2200 19:44.8 +50:31 Cygnus summer Blinking Planetary 16 7243 Open Cluster 6.4 2500 22:15.3 +49:53 Lacerta autumn 17 147 Elliptical Galaxy 9.3 2300000 00:33.2 +48:30 Cassiopeia autumn 18 185 Elliptical Galaxy 9.2 2300000 00:39.0 +48:20 Cassiopeia autumn 19 IC 5146 Bright Nebula 10 3300 21:53.5 +47:16 Cygnus autumn Cocoon Nebula 20 7000 Bright Nebula 6 1800 20:58.8 +44:20 Cygnus summer North America Nebula 21 4449 Irregular Galaxy 9.4 10 million 12:28.2 +44:06 Canceres Venatici spring 22 7662 Planetary Nebula 9.2 3200 23:25.9 +42:33 Andromeda autumn Blue Snowball 23 891 Spiral Galaxy 9.9 31 million 02:22.6 +42:21 Andromeda autumn 24 1275 Irregular Galaxy 11.6 230 mil. 03:19.8 +41:31 Perseus winter Perseus A 25 2419 Globular Cluster 10.4 275000 07:38.1 +38:53 Lynx winter 26 4244 Spiral Galaxy 10.6 10 million 12:17.5 +37:49 Canceres Venatici spring 27 6888 Bright Nebula 7.5 4700 20:12.0 +38:21 Cygnus summer Crescent Nebula 28 752 Open Cluster 5.7 1200 01:57.8 +37:41 Andromeda autumn 29 5005 Spiral Galaxy 9.8 69 million 13:10.9 +37:03 Canceres Venatici spring 30 7331 Spiral Galaxy 9.5 47 million 22:37.1 +34:25 Pegasus autumn 31 IC 405 Bright Nebula 6 1600 05:16.2 +34:16 Auriga winter Flaming Star Nebula 32 4631 Spiral Galaxy 9.3 22 million 12:42.1 +32:32 Canceres Venatici spring Whale Galaxy 33 6992/5 Supernova Remnant - 2500 20:56.4 +31:43 Cygnus summer East Veil Nebula 34 6960 Supernova Remnant - 2500 20:45.7 +30:43 Cygnus summer West Veil Nebula 35 4889 Elliptical Galaxy 11.4 300 mil. 13:00.1 +27:59 Coma Berenices spring 36 4559 Spiral Galaxy 9.8 32 million 12:36.0 +27:58 Coma Berenices spring 37 6885 Open Cluster 5.7 1950 20:12.0 +26:29 Vulpecula summer 38 4565 Spiral Galaxy 9.6 32 million 12:36.3 +25:59 Coma Berenices spring Needle Galaxy 39 2392 Planetary Nebula 9.9 4000 07:29.2 +20:55 Gemini winter Eskimo or Clown Nebula 40 3626 Spiral Galaxy 10.9 86 million 11:20.1 +18:21 Leo spring 41 - Open Cluster 1 151 04:27.0 +16:00 Taurus winter Hyades 42 7006 Globular Cluster 10.6 135000 21:01.5 +16:11 Delphinus autumn 43 7814 Spiral Galaxy 10.5 49 million 00:03.3 +16:09 Pegasus autumn 44 7479 Spiral Galaxy 11 106 mil. 23:04.9 +12:19 Pegasus autumn 45 5248 Spiral Galaxy 10.2 74 million 13:37.5 +08:53 Bootes spring 46 2261 Bright Nebula 10 2500 06:39.2 +08:44 Monoceros winter Hubble's Variable Nebula 47 6934 Globular Cluster 8.9 57000 20:34.2 +07:24 Delphinus summer 48 2775 Spiral Galaxy 10.3 55 million 09:10.3 +07:02 Cancer spring 49 2237-9 Bright Nebula - 4900 06:32.3 +05:03 Monoceros winter Rosette Nebula 50 2244 Open Cluster 4.8 4900 06:32.4 +04:52 Monoceros winter 51 IC 1613 Irregular Galaxy 9 2300000 01:04.8 +02:07 Cetus autumn 52 4697 Elliptical Galaxy 9.3 76 million 12:48.6 -05:48 Virgo spring 53 3115 Elliptical Galaxy 9.1 22 million 10:05.2 -07:43 Sextans spring Spindle Galaxy 54 2506 Open Cluster 7.6 10000 08:00.2 -10:47 Monoceros winter 55 7009 Planetary Nebula 8.3 1400 21:04.2 -11:22 Aquarius autumn Saturn Nebula 56 246 Planetary Nebula 8 1600 00:47.0 -11:53 Cetus autumn 57 6822 Irregular Galaxy 9.3 2300000 19:44.9 -14:48 Sagittarius summer Barnard's Galaxy 58 2360 Open Cluster 7.2 3700 07:17.8 -15:37 Canis Major winter 59 3242 Planetary Nebula 8.6 1400 10:24.8 -18:38 Hydra spring Ghost of Jupiter 60 4038 Spiral Galaxy 11.3 83 million 12:01.9 -18:52 Corvus spring Antennae Galaxies 61 4039 Spiral Galaxy 13 83 million 12:01.9 -18:53 Corvus spring Antennae Galaxies 62 247 Spiral Galaxy 8.9 6800000 00:47.1 -20:46 Cetus autumn 63 7293 Planetary Nebula 6.5 522 22:29.6 -20:48 Aquarius autumn Helix Nebula 64 2362 Open Cluster 4.1 5100 07:18.8 -24:57 Canis Major winter 65 253 Spiral Galaxy 7.1 9800000 00:47.6 -25:17 Sculptor autumn Sculptor Galaxy 66 5694 Globular Cluster 10.2 113000 14:39.6 -26:32 Hydra spring 67 1097 Spiral Galaxy 9.2 47 million 02:46.3 -30:17 Fornax autumn 68 6729 Bright Nebula 9.7 424 19:01.9 -36:57 Corona Australis summer 69 6302 Planetary Nebula 12.8 5200 17:13.7 -37:06 Scorpius summer Bug Nebula 70 300 Spiral Galaxy 8.1 3900000 00:54.9 -37:41 Sculptor autumn 2 Caldwell Catalog Distance Viewing C NGC Type Mag RA Dec Constellation Common Name (ly) Season 71 2477 Open Cluster 5.8 3700 07:52.3 -38:33 Puppis winter 72 55 Spiral Galaxy 8.2 4200000 00:14.9 -39:11 Sculptor autumn 73 1851 Globular Cluster 7.3 39400 05:14.1 -40:03 Columba winter 74 3132 Planetary Nebula 8.2 2000 10:07.7 -40:26 Vela spring Eight Burst Nebula 75 6124 Open Cluster 5.8 1500 16:25.6 -40:40 Scorpius summer 76 6231 Open Cluster 2.6 6000 16:54.0 -41:48 Scorpius summer 77 5128 Elliptical Galaxy 7 16 million 13:25.5 -43:01 Centaurus spring Centaurus A 78 6541 Globular Cluster 6.6 22300 18:08.0 -43:42 Corona Australis summer 79 3201 Globular Cluster 6.7 17000 10:17.6 -46:25 Vela spring 80 5139 Globular Cluster 3.6 17300 13:26.8 -47:29 Centaurus spring Omega Centauri 81 6352 Globular Cluster 8.1 18600 17:25.5 -48:25 Ara summer 82 6193 Open Cluster 5.2 4300 16:41.3 -48:46 Ara summer 83 4945 Spiral Galaxy 9.5 17 million 13:05.4 -49:28 Centaurus spring 84 5286 Globular Cluster 7.6 36000 13:46.4 -51:22 Centaurus spring 85 IC 2391 Open Cluster 2.5 500 08:40.2 -53:04 Vela winter Omicron Vel Cluster 86 6397 Globular Cluster 5.6 7500 17:40.7 -53:40 Ara summer 87 1261 Globular Cluster 8.4 55500 03:12.3 -55:13 Horologium winter 88 5823 Open Cluster 7.9 3400 15:05.7 -55:36 Circinus summer 89 6087 Open Cluster 5.4 3300 16:18.9 -57:54 Norma summer S Norma Cluster 90 2867 Planetary Nebula 9.7 5500 09:21.4 -58:19 Carina spring 91 3532 Open Cluster 3 1600 11:06.4 -58:40 Carina spring 92 3372 Bright Nebula 6.2 7500 10:43.8 -59:52 Carina spring Eta Carinae Nebula 93 6752 Globular Cluster 5.4 13000 19:10.9 -59:59 Pavo summer 94 4755 Open Cluster 4.2 4900 12:53.6 -60:20 Crux spring Jewel Box 95 6025 Open Cluster 5.1 2500 16:03.7 -60:30 Triangulum Australe summer 96 2516 Open Cluster 3.8 1300 07:58.3 -60:52 Carina winter 97 3766 Open Cluster 5.3 5800 11:36.1 -61:37 Centaurus spring 98 4609 Open Cluster 6.9 4200 12:42.3 -62:58 Crux spring 99 - Dark Nebula - 610 12:53.0 -63:00 Crux spring Coalsack Nebula 100 IC 2944 Open Cluster 4.5 6000 11:36.6 -63:02 Centaurus spring Lambda Centauri Nebula 101 6744 Spiral Galaxy 9 34 million 19:09.8 -63:51 Pavo summer 102 IC 2602 Open Cluster 1.9 492 10:43.2 -64:24 Carina spring Theta Car Cluster 103 2070 Bright Nebula 1 170000 05:38.7 -69:06 Dorado winter Tarantula Nebula 104 362 Globular Cluster 6.6 27700 01:03.2 -70:51 Tucana autumn 105 4833 Globular Cluster 7.3 19600 12:59.6 -70:53 Musca spring 106 104 Globular Cluster 4 14700 00:24.1 -72:05 Tucana autumn 47 Tucanae 107 6101 Globular Cluster 9.3 49900 16:25.8 -72:12 Apus summer 108 4372 Globular Cluster 7.8 18900 12:25.8 -72:40 Musca spring 109 3195 Planetary Nebula 11.6 5400 10:09.5 -80:52 Chamaeleon spring 3.
Load more

Recommended publications
  • Multiband Counterparts of Two Eclipsing Ultraluminous X-Ray Sources in M 51
    MNRAS 000,1{16 (2017) Preprint 5 November 2018 Compiled using MNRAS LATEX style file v3.0 Multiband counterparts of two eclipsing ultraluminous X-ray sources in M 51 R. Urquhart,1? R. Soria,2;1;3 H.M. Johnston,3 M.W. Pakull,4 C. Motch,4 A. Schwope,5 J.C.A. Miller-Jones1 and G.E. Anderson1 1International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth, WA 6845, Australia 2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 3Sydney Institute for Astronomy, School of Physics A28, The University of Sydney, Sydney, NSW 2006, Australia 4Observatoire astronomique, Universit´ede Strasbourg, CNRS, UMR 7550, 11 rue de l'Universit´e,67000, Strasbourg, France 5Leibniz-Institut f¨urAstrophysik Potsdam, An der Sternwarte 16, 14482, Potsdam, Germany Accepted XXX. Received YYY; in original form ZZZ ABSTRACT We present the discovery and interpretation of ionized nebulae around two ultra- luminous X-ray sources in M 51; both sources share the rare property of show- ing X-ray eclipses by their companion stars, and are therefore prime targets for follow-up studies. Using archival Hubble Space Telescope images, we found an elon- gated, 100-pc-long emission-line structure associated with one X-ray source (CXOM51 J132940.0+471237; ULX-1 for simplicity), and a more circular, ionized nebula at the location of the second source (CXOM51 J132939.5+471244; ULX-2 for simplicity). We observed both nebulae with the Large Binocular Telescope's Multi-Object Double Spectrograph. From our analysis of the optical spectra, we argue that the gas in the ULX-1 bubble is shock-ionized, consistent with the effect of a jet with a kinetic power of ≈2 ×1039 erg s−1.
    [Show full text]
  • Arxiv:2012.09981V1 [Astro-Ph.SR] 17 Dec 2020 2 O
    Contrib. Astron. Obs. Skalnat´ePleso XX, 1 { 20, (2020) DOI: to be assigned later Flare stars in nearby Galactic open clusters based on TESS data Olga Maryeva1;2, Kamil Bicz3, Caiyun Xia4, Martina Baratella5, Patrik Cechvalaˇ 6 and Krisztian Vida7 1 Astronomical Institute of the Czech Academy of Sciences 251 65 Ondˇrejov,The Czech Republic(E-mail: [email protected]) 2 Lomonosov Moscow State University, Sternberg Astronomical Institute, Universitetsky pr. 13, 119234, Moscow, Russia 3 Astronomical Institute, University of Wroc law, Kopernika 11, 51-622 Wroc law, Poland 4 Department of Theoretical Physics and Astrophysics, Faculty of Science, Masaryk University, Kotl´aˇrsk´a2, 611 37 Brno, Czech Republic 5 Dipartimento di Fisica e Astronomia Galileo Galilei, Vicolo Osservatorio 3, 35122, Padova, Italy, (E-mail: [email protected]) 6 Department of Astronomy, Physics of the Earth and Meteorology, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynsk´adolina F-2, 842 48 Bratislava, Slovakia 7 Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, H-1121 Budapest, Konkoly Thege Mikl´os´ut15-17, Hungary Received: September ??, 2020; Accepted: ????????? ??, 2020 Abstract. The study is devoted to search for flare stars among confirmed members of Galactic open clusters using high-cadence photometry from TESS mission. We analyzed 957 high-cadence light curves of members from 136 open clusters. As a result, 56 flare stars were found, among them 8 hot B-A type ob- jects. Of all flares, 63 % were detected in sample of cool stars (Teff < 5000 K), and 29 % { in stars of spectral type G, while 23 % in K-type stars and ap- proximately 34% of all detected flares are in M-type stars.
    [Show full text]
  • MESSIER 13 RA(2000) : 16H 41M 42S DEC(2000): +36° 27'
    MESSIER 13 RA(2000) : 16h 41m 42s DEC(2000): +36° 27’ 41” BASIC INFORMATION OBJECT TYPE: Globular Cluster CONSTELLATION: Hercules BEST VIEW: Late July DISCOVERY: Edmond Halley, 1714 DISTANCE: 25,100 ly DIAMETER: 145 ly APPARENT MAGNITUDE: +5.8 APPARENT DIMENSIONS: 20’ Starry Night FOV: 1.00 Lyra FOV: 60.00 Libra MESSIER 6 (Butterfly Cluster) RA(2000) : 17Ophiuchus h 40m 20s DEC(2000): -32° 15’ 12” M6 Sagitta Serpens Cauda Vulpecula Scutum Scorpius Aquila M6 FOV: 5.00 Telrad Delphinus Norma Sagittarius Corona Australis Ara Equuleus M6 Triangulum Australe BASIC INFORMATION OBJECT TYPE: Open Cluster Telescopium CONSTELLATION: Scorpius Capricornus BEST VIEW: August DISCOVERY: Giovanni Batista Hodierna, c. 1654 DISTANCE: 1600 ly MicroscopiumDIAMETER: 12 – 25 ly Pavo APPARENT MAGNITUDE: +4.2 APPARENT DIMENSIONS: 25’ – 54’ AGE: 50 – 100 million years Telrad Indus MESSIER 7 (Ptolemy’s Cluster) RA(2000) : 17h 53m 51s DEC(2000): -34° 47’ 36” BASIC INFORMATION OBJECT TYPE: Open Cluster CONSTELLATION: Scorpius BEST VIEW: August DISCOVERY: Claudius Ptolemy, 130 A.D. DISTANCE: 900 – 1000 ly DIAMETER: 20 – 25 ly APPARENT MAGNITUDE: +3.3 APPARENT DIMENSIONS: 80’ AGE: ~220 million years FOV:Starry 1.00Night FOV: 60.00 Hercules Libra MESSIER 8 (THE LAGOON NEBULA) RA(2000) : 18h 03m 37s DEC(2000): -24° 23’ 12” Lyra M8 Ophiuchus Serpens Cauda Cygnus Scorpius Sagitta M8 FOV: 5.00 Scutum Telrad Vulpecula Aquila Ara Corona Australis Sagittarius Delphinus M8 BASIC INFORMATION Telescopium OBJECT TYPE: Star Forming Region CONSTELLATION: Sagittarius Equuleus BEST
    [Show full text]
  • Precollimator for X-Ray Telescope (Stray-Light Baffle) Mindrum Precision, Inc Kurt Ponsor Mirror Tech/SBIR Workshop Wednesday, Nov 2017
    Mindrum.com Precollimator for X-Ray Telescope (stray-light baffle) Mindrum Precision, Inc Kurt Ponsor Mirror Tech/SBIR Workshop Wednesday, Nov 2017 1 Overview Mindrum.com Precollimator •Past •Present •Future 2 Past Mindrum.com • Space X-Ray Telescopes (XRT) • Basic Structure • Effectiveness • Past Construction 3 Space X-Ray Telescopes Mindrum.com • XMM-Newton 1999 • Chandra 1999 • HETE-2 2000-07 • INTEGRAL 2002 4 ESA/NASA Space X-Ray Telescopes Mindrum.com • Swift 2004 • Suzaku 2005-2015 • AGILE 2007 • NuSTAR 2012 5 NASA/JPL/ASI/JAXA Space X-Ray Telescopes Mindrum.com • Astrosat 2015 • Hitomi (ASTRO-H) 2016-2016 • NICER (ISS) 2017 • HXMT/Insight 慧眼 2017 6 NASA/JPL/CNSA Space X-Ray Telescopes Mindrum.com NASA/JPL-Caltech Harrison, F.A. et al. (2013; ApJ, 770, 103) 7 doi:10.1088/0004-637X/770/2/103 Basic Structure XRT Mindrum.com Grazing Incidence 8 NASA/JPL-Caltech Basic Structure: NuSTAR Mirrors Mindrum.com 9 NASA/JPL-Caltech Basic Structure XRT Mindrum.com • XMM Newton XRT 10 ESA Basic Structure XRT Mindrum.com • XMM-Newton mirrors D. de Chambure, XMM Project (ESTEC)/ESA 11 Basic Structure XRT Mindrum.com • Thermal Precollimator on ROSAT 12 http://www.xray.mpe.mpg.de/ Basic Structure XRT Mindrum.com • AGILE Precollimator 13 http://agile.asdc.asi.it Basic Structure Mindrum.com • Spektr-RG 2018 14 MPE Basic Structure: Stray X-Rays Mindrum.com 15 NASA/JPL-Caltech Basic Structure: Grazing Mindrum.com 16 NASA X-Ray Effectiveness: Straylight Mindrum.com • Correct Reflection • Secondary Only • Backside Reflection • Primary Only 17 X-Ray Effectiveness Mindrum.com • The Crab Nebula by: ROSAT (1990) Chandra 18 S.
    [Show full text]
  • Curriculum Vitae - 24 March 2020
    Dr. Eric E. Mamajek Curriculum Vitae - 24 March 2020 Jet Propulsion Laboratory Phone: (818) 354-2153 4800 Oak Grove Drive FAX: (818) 393-4950 MS 321-162 [email protected] Pasadena, CA 91109-8099 https://science.jpl.nasa.gov/people/Mamajek/ Positions 2020- Discipline Program Manager - Exoplanets, Astro. & Physics Directorate, JPL/Caltech 2016- Deputy Program Chief Scientist, NASA Exoplanet Exploration Program, JPL/Caltech 2017- Professor of Physics & Astronomy (Research), University of Rochester 2016-2017 Visiting Professor, Physics & Astronomy, University of Rochester 2016 Professor, Physics & Astronomy, University of Rochester 2013-2016 Associate Professor, Physics & Astronomy, University of Rochester 2011-2012 Associate Astronomer, NOAO, Cerro Tololo Inter-American Observatory 2008-2013 Assistant Professor, Physics & Astronomy, University of Rochester (on leave 2011-2012) 2004-2008 Clay Postdoctoral Fellow, Harvard-Smithsonian Center for Astrophysics 2000-2004 Graduate Research Assistant, University of Arizona, Astronomy 1999-2000 Graduate Teaching Assistant, University of Arizona, Astronomy 1998-1999 J. William Fulbright Fellow, Australia, ADFA/UNSW School of Physics Languages English (native), Spanish (advanced) Education 2004 Ph.D. The University of Arizona, Astronomy 2001 M.S. The University of Arizona, Astronomy 2000 M.Sc. The University of New South Wales, ADFA, Physics 1998 B.S. The Pennsylvania State University, Astronomy & Astrophysics, Physics 1993 H.S. Bethel Park High School Research Interests Formation and Evolution
    [Show full text]
  • Winter Constellations
    Winter Constellations *Orion *Canis Major *Monoceros *Canis Minor *Gemini *Auriga *Taurus *Eradinus *Lepus *Monoceros *Cancer *Lynx *Ursa Major *Ursa Minor *Draco *Camelopardalis *Cassiopeia *Cepheus *Andromeda *Perseus *Lacerta *Pegasus *Triangulum *Aries *Pisces *Cetus *Leo (rising) *Hydra (rising) *Canes Venatici (rising) Orion--Myth: Orion, the great ​ ​ hunter. In one myth, Orion boasted he would kill all the wild animals on the earth. But, the earth goddess Gaia, who was the protector of all animals, produced a gigantic scorpion, whose body was so heavily encased that Orion was unable to pierce through the armour, and was himself stung to death. His companion Artemis was greatly saddened and arranged for Orion to be immortalised among the stars. Scorpius, the scorpion, was placed on the opposite side of the sky so that Orion would never be hurt by it again. To this day, Orion is never seen in the sky at the same time as Scorpius. DSO’s ● ***M42 “Orion Nebula” (Neb) with Trapezium A stellar ​ ​ ​ nursery where new stars are being born, perhaps a thousand stars. These are immense clouds of interstellar gas and dust collapse inward to form stars, mainly of ionized hydrogen which gives off the red glow so dominant, and also ionized greenish oxygen gas. The youngest stars may be less than 300,000 years old, even as young as 10,000 years old (compared to the Sun, 4.6 billion years old). 1300 ly. ​ ​ 1 ● *M43--(Neb) “De Marin’s Nebula” The star-forming ​ “comma-shaped” region connected to the Orion Nebula. ● *M78--(Neb) Hard to see. A star-forming region connected to the ​ Orion Nebula.
    [Show full text]
  • Chemical Composition of the Young Open Clusters IC 2602 and IC 2391,
    A&A 501, 553–562 (2009) Astronomy DOI: 10.1051/0004-6361/200811587 & c ESO 2009 Astrophysics Chemical composition of the young open clusters IC 2602 and IC 2391, V. D’Orazi1,2 and S. Randich2 1 Dipartimento di Astronomia e Scienza dello Spazio, Università di Firenze, Largo E. Fermi 2, Firenze, Italy e-mail: [email protected] 2 INAF - Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, Firenze, Italy Received 23 December 2008 / Accepted 21 April 2009 ABSTRACT Context. Galactic open clusters have been long recognized as one of the best tools to investigate the chemical content of Galactic disk and its time evolution. In the last decade, many efforts have been directed to chemically characterize the old and intermediate age population; surprisingly, the chemical content of the younger and close counterpart remains largely undetermined. Aims. In this paper we present the abundance analysis of a sample of 15 G/K members of the young pre-main sequence clusters IC 2602 and IC 2391. Along with IC 4665, these are the first pre-main sequence clusters for which a detailed abundance determination has been carried out so far. Methods. We analyzed high-resolution, high S/N spectra acquired with different instruments (UVES and CASPEC at ESO, and the echelle spectrograph at CTIO), using MOOG and equivalent width measurements. Along with metallicity ([Fe/H]), we measured Na i,Sii,Cai,Tii and Ti ii,andNii abundances. Stars cooler than ∼5500 show lower Ca i,Tii,andNai than warmer stars. By determining Ti ii abundances, we show that, at least for Ti, this effect is due to NLTE and over-ionization.
    [Show full text]
  • Galaxies NGC 4038/9
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by CERN Document Server A Multi-transition CO Study of The \Antennae" Galaxies NGC 4038/9 Ming Zhu1,E.R.Seaquist1, and Nario Kuno2 ABSTRACT For the Antennae interacting galaxy pair, we have obtained high quality, fully sampled 12CO J=1–0 and 3–2 maps of the regions surrounding the nuclei and the area of overlap between the two galaxies. The maps possess an angular resolution of 1500 or 1.5 kpc, so far the highest resolution maps available at both the J=1–0 and 3–2 transitions. In addition, 12CO J=2–1 data have been obtained for the positions of the two nuclei as well as in part of the overlap 12 region with 2000 angular resolution. The CO J=1–0, 2–1, 3–2 emission all peak in an off-nucleus region adjacent to where the two disks overlap. Use of the conventional X factor yields 4 109 M molecular gas mass in the overlap ∼ × region. It is difficult to understand how such a large amount of molecular gas can be accumulated in this region given the relatively short lifetime of molecular clouds and the limited period of time for this region to form. Line emission at 13CO J=2–1 and 3–2 is detected at selected points in the two nuclei and the overlap region. Both the 12CO/13CO J=2–1 and 3–2 integrated intensity ratios are remarkably high in the overlap region. This is the first published case in which such high 12CO/13CO J=2–1 and 3–2 ratios are found outside a galactic nucleus.
    [Show full text]
  • August 13 2016 7:00Pm at the Herrett Center for Arts & Science College of Southern Idaho
    Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting President’s Message Saturday, August 13th 2016 7:00pm at the Herrett Center for Arts & Science College of Southern Idaho. Public Star Party Follows at the Colleagues, Centennial Observatory Club Officers It's that time of year: The City of Rocks Star Party. Set for Friday, Aug. 5th, and Saturday, Aug. 6th, the event is the gem of the MVAS year. As we've done every Robert Mayer, President year, we will hold solar viewing at the Smoky Mountain Campground, followed by a [email protected] potluck there at the campground. Again, MVAS will provide the main course and 208-312-1203 beverages. Paul McClain, Vice President After the potluck, the party moves over to the corral by the bunkhouse over at [email protected] Castle Rocks, with deep sky viewing beginning sometime after 9 p.m. This is a chance to dig into some of the darkest skies in the west. Gary Leavitt, Secretary [email protected] Some members have already reserved campsites, but for those who are thinking of 208-731-7476 dropping by at the last minute, we have room for you at the bunkhouse, and would love to have to come by. Jim Tubbs, Treasurer / ALCOR [email protected] The following Saturday will be the regular MVAS meeting. Please check E-mail or 208-404-2999 Facebook for updates on our guest speaker that day. David Olsen, Newsletter Editor Until then, clear views, [email protected] Robert Mayer Rick Widmer, Webmaster [email protected] Magic Valley Astronomical Society is a member of the Astronomical League M-51 imaged by Rick Widmer & Ken Thomason Herrett Telescope Shotwell Camera https://herrett.csi.edu/astronomy/observatory/City_of_Rocks_Star_Party_2016.asp Calendars for August Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 New Moon City Rocks City Rocks Lunation 1158 Castle Rocks Castle Rocks Star Party Star Party Almo, ID Almo, ID 7 8 9 10 11 12 13 MVAS General Mtg.
    [Show full text]
  • The Radio Continuum View of Centaurus Acentaurus A
    TheThe radioradio continuumcontinuum viewview ofof CentaurusCentaurus AA Ron Ekers CSIRO The Many Faces of Centaurus A Sydney, 29 June 2009 Ilana's composite Morganti et al. 1999 9° 10' Burns et al. xx image courtesy Norbert Junkes (MPIfR) WhyWhy CentaurusCentaurus AA isis specialspecial ■ the first extragalactic radio source ■ the brightest source in the Southern Hemisphere ■ the second double lobed source discovered ± after Cygnus A ■ the closest Radio Galaxy ■ the closest AGN ■ the closest SMBH ± VLBI resolution 0.01pc, 100 Rs ■ A spectacular galaxy EvolutionEvolution ofof thethe ModelsModels ■ Radio sources ± Static magnetic field 1960 ± Evolutionary sequence 1970 ± Continuous injection ± Continuous reacceleration ■ Energy source ± Galaxy collisions 1950's ± Nuclear accretions 1960- ± Accretion triggered by collisions 1980- CentaurusCentaurus AA thethe closestclosest AGNAGN ■ Distance 3.4Mpc ■ Next closest comparable AGN M87 17Mpc ! ■ Average distance to a L=1024 W Hz-1 radio galaxies ± 10Mpc ± So we are lucky (or influenced!) ■ Much easier to study at all wavelengths ■ Subtends a large angular size ± Good linear resolution ± Background probes SomeSome RadioRadio GalaxiesGalaxies Name Size Log Log (kpc) Luminosity Energy (ergs sec-1) (ergs) Centaurus A 470 41.7 59.9 Cygnus A 200 45.2 60.6 M87 80 42.0 58.6 M82 1 39.5 55.2 PolarizationPolarization inin CentaurusCentaurus AA Bracewell 1962 ■ April 1962 ■ Parkes 64m just completed ■ Discovered by Bracewell ± Published Cooper and Price ± Visitors Log ± Not a National Facilities yet! ■ Connie
    [Show full text]
  • PUBLIC OBSERVING NIGHTS the William D. Mcdowell Observatory
    THE WilliamPUBLIC D. OBSERVING mcDowell NIGHTS Observatory FREE PUBLIC OBSERVING NIGHTS WINTER Schedule 2019 December 2018 (7PM-10PM) 5th Mars, Uranus, Neptune, Almach (double star), Pleiades (M45), Andromeda Galaxy (M31), Oribion Nebula (M42), Beehive Cluster (M44), Double Cluster (NGC 869 & 884) 12th Mars, Uranus, Neptune, Almach (double star), Pleiades (M45), Andromeda Galaxy (M31), Oribion Nebula (M42), Beehive Cluster (M44), Double Cluster (NGC 869 & 884) 19th Moon, Mars, Uranus, Neptune, Almach (double star), Pleiades (M45), Andromeda Galaxy (M31), Oribion Nebula (M42), Beehive Cluster (M44), Double Cluster (NGC 869 & 884) 26th Moon, Mars, Uranus, Neptune, Almach (double star), Pleiades (M45), Andromeda Galaxy (M31), Oribion Nebula (M42), Beehive Cluster (M44), Double Cluster (NGC 869 & 884)? January 2019 (7PM-10PM) 2nd Moon, Mars, Uranus, Neptune, Sirius, Almach (double star), Pleiades (M45), Orion Nebula (M42), Open Cluster (M35) 9th Mars, Uranus, Neptune, Sirius, Almach (double star), Pleiades (M45), Orion Nebula (M42), Open Cluster (M35) 16 Mars, Uranus, Neptune, Sirius, Almach (double star), Pleiades (M45), Orion Nebula (M42), Open Cluster (M35) 23rd, Moon, Mars, Uranus, Neptune, Sirius, Almach (double star), Pleiades (M45), Andromeda Galaxy (M31), Orion Nebula (M42), Beehive Cluster (M44), Double Cluster (NGC 869 & 884) 30th Moon, Mars, Uranus, Neptune, Sirius, Almach (double star), Pleiades (M45), Andromeda Galaxy (M31), Orion Nebula (M42), Beehive Cluster (M44), Double Cluster (NGC 869 & 884) February 2019 (7PM-10PM) 6th
    [Show full text]
  • Ghost Hunt Challenge 2020
    Virtual Ghost Hunt Challenge 10/21 /2020 (Sorry we can meet in person this year or give out awards but try doing this challenge on your own.) Participant’s Name _________________________ Categories for the competition: Manual Telescope Electronically Aided Telescope Binocular Astrophotography (best photo) (if you expect to compete in more than one category please fill-out a sheet for each) ** There are four objects on this list that may be beyond the reach of beginning astronomers or basic telescopes. Therefore, we have marked these objects with an * and provided alternate replacements for you just below the designated entry. We will use the primary objects to break a tie if that’s needed. Page 1 TAS Ghost Hunt Challenge - Page 2 Time # Designation Type Con. RA Dec. Mag. Size Common Name Observed Facing West – 7:30 8:30 p.m. 1 M17 EN Sgr 18h21’ -16˚11’ 6.0 40’x30’ Omega Nebula 2 M16 EN Ser 18h19’ -13˚47 6.0 17’ by 14’ Ghost Puppet Nebula 3 M10 GC Oph 16h58’ -04˚08’ 6.6 20’ 4 M12 GC Oph 16h48’ -01˚59’ 6.7 16’ 5 M51 Gal CVn 13h30’ 47h05’’ 8.0 13.8’x11.8’ Whirlpool Facing West - 8:30 – 9:00 p.m. 6 M101 GAL UMa 14h03’ 54˚15’ 7.9 24x22.9’ 7 NGC 6572 PN Oph 18h12’ 06˚51’ 7.3 16”x13” Emerald Eye 8 NGC 6426 GC Oph 17h46’ 03˚10’ 11.0 4.2’ 9 NGC 6633 OC Oph 18h28’ 06˚31’ 4.6 20’ Tweedledum 10 IC 4756 OC Ser 18h40’ 05˚28” 4.6 39’ Tweedledee 11 M26 OC Sct 18h46’ -09˚22’ 8.0 7.0’ 12 NGC 6712 GC Sct 18h54’ -08˚41’ 8.1 9.8’ 13 M13 GC Her 16h42’ 36˚25’ 5.8 20’ Great Hercules Cluster 14 NGC 6709 OC Aql 18h52’ 10˚21’ 6.7 14’ Flying Unicorn 15 M71 GC Sge 19h55’ 18˚50’ 8.2 7’ 16 M27 PN Vul 20h00’ 22˚43’ 7.3 8’x6’ Dumbbell Nebula 17 M56 GC Lyr 19h17’ 30˚13 8.3 9’ 18 M57 PN Lyr 18h54’ 33˚03’ 8.8 1.4’x1.1’ Ring Nebula 19 M92 GC Her 17h18’ 43˚07’ 6.44 14’ 20 M72 GC Aqr 20h54’ -12˚32’ 9.2 6’ Facing West - 9 – 10 p.m.
    [Show full text]