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HST Observations of Young Star Clusters in Interacting Galaxies
CORE Metadata, citation and similar papers at core.ac.uk Provided by CERN Document Server Extragalactic Star Clusters IAU Symposium Series, Vol. Vol. 207, 2001 Eva K. Grebel, Doug Geisler, and Dante Minniti, eds. HST Observations of Young Star Clusters in Interacting Galaxies Kirk D. Borne Raytheon ITSS and NASA-GSFC, Code 631, Astrophysics Data Facility, Greenbelt, MD 20771 USA William C. Keel University of Alabama, Dept. of Physics and Astronomy, Tuscaloosa, AL 35487-0324 USA Philip N. Appleton & Curtis Struck Iowa State University, Dept. of Physics and Astronomy, Ames, IA 50011 USA RayA.Lucas&AlfredB.Schultz STScI, 3700 San Martin Drive, Baltimore, MD 21218 USA Abstract. We present early results from the analysis of HST imaging observations for several pairs of interacting galaxies. We include two cases that were specifically chosen to represent a strong early (young) encounter and a weak late (old) encounter. The goals of the project include a de- termination of the timing, frequency, strength, and characteristics of the young star clusters formed in these two limiting cases of tidal encounters. 1. Results from the Analysis of HST Imaging Observations Multi-band HST imaging data have been obtained for several interacting galaxy systems. These include the Cartwheel Ring Galaxy (Borne et al. 1996; Struck et al. 1996; Appleton et al., in preparation), Arp 81 and Arp 297 (Keel & Borne, in preparation), and a large sample of ULIRGs (Ultra-Luminous Infrared Galax- ies; Borne et al. 2000, and references therein). WFPC2 B-band (F450W) and I-band (F814W) images have been obtained for the Cartwheel, Arp 297, and Arp 81. -
Dwarf Galaxies
Europeon South.rn Ob.ervotory• ESO ML.2B~/~1 ~~t.· MAIN LIBRAKY ESO Libraries ,::;,q'-:;' ..-",("• .:: 114 ML l •I ~ -." "." I_I The First ESO/ESA Workshop on the Need for Coordinated Space and Ground-based Observations - DWARF GALAXIES Geneva, 12-13 May 1980 Report Edited by M. Tarenghi and K. Kjar - iii - INTRODUCTION The Space Telescope as a joint undertaking between NASA and ESA will provide the European community of astronomers with the opportunity to be active partners in a venture that, properly planned and performed, will mean a great leap forward in the science of astronomy and cosmology in our understanding of the universe. The European share, however,.of at least 15% of the observing time with this instrumentation, if spread over all the European astrono mers, does not give a large amount of observing time to each individual scientist. Also, only well-planned co ordinated ground-based observations can guarantee success in interpreting the data and, indeed, in obtaining observ ing time on the Space Telescope. For these reasons, care ful planning and cooperation between different European groups in preparing Space Telescope observing proposals would be very essential. For these reasons, ESO and ESA have initiated a series of workshops on "The Need for Coordinated Space and Ground based Observations", each of which will be centred on a specific subject. The present workshop is the first in this series and the subject we have chosen is "Dwarf Galaxies". It was our belief that the dwarf galaxies would be objects eminently suited for exploration with the Space Telescope, and I think this is amply confirmed in these proceedings of the workshop. -
Asteroids + Comets
Datasets for Asteroids and Comets Caleb Keaveney, OpenSpace intern Rachel Smith, Head, Astronomy & Astrophysics Research Lab North Carolina Museum of Natural Sciences 2020 Contents Part 1: Visualization Settings ………………………………………………………… 3 Part 2: Near-Earth Asteroids ………………………………………………………… 5 Amor Asteroids Apollo Asteroids Aten Asteroids Atira Asteroids Potentially Hazardous Asteroids (PHAs) Mars-crossing Asteroids Part 3: Main-Belt Asteroids …………………………………………………………… 12 Inner Main Asteroid Belt Main Asteroid Belt Outer Main Asteroid Belt Part 4: Centaurs, Trojans, and Trans-Neptunian Objects ………………………….. 15 Centaur Objects Jupiter Trojan Asteroids Trans-Neptunian Objects Part 5: Comets ………………………………………………………………………….. 19 Chiron-type Comets Encke-type Comets Halley-type Comets Jupiter-family Comets C 2019 Y4 ATLAS About this guide This document outlines the datasets available within the OpenSpace astrovisualization software (version 0.15.2). These datasets were compiled from the Jet Propulsion Laboratory’s (JPL) Small-Body Database (SBDB) and NASA’s Planetary Data Service (PDS). These datasets provide insights into the characteristics, classifications, and abundance of small-bodies in the solar system, as well as their relationships to more prominent bodies. OpenSpace: Datasets for Asteroids and Comets 2 Part 1: Visualization Settings To load the Asteroids scene in OpenSpace, load the OpenSpace Launcher and select “asteroids” from the drop-down menu for “Scene.” Then launch OpenSpace normally. The Asteroids package is a big dataset, so it can take a few hours to load the first time even on very powerful machines and good internet connections. After a couple of times opening the program with this scene, it should take less time. If you are having trouble loading the scene, check the OpenSpace Wiki or the OpenSpace Support Slack for information and assistance. -
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, -
An Analysis of the Environment and Gas Content of Luminous Infrared Galaxies
Abstract Title of Dissertation: An Analysis of the Environment and Gas Content of Luminous Infrared Galaxies Bevin Ashley Zauderer, Doctor of Philosophy, 2010 Dissertation directed by: Professor Stuart N. Vogel Department of Astronomy Luminous and ultraluminous infrared galaxies (U/LIRGs) represent a population among the most extreme in our universe, emitting an extraordinary amount of energy at infrared wavelengths from dust heated by prolific star formation and/or an active galactic nucleus (AGN). We present three investigations of U/LIRGs to better understand their global environment, their interstellar medium properties, and their nuclear region where molecular gas feeds a starburst or AGN. To study the global environment, we compute the spatial cluster-galaxy amplitude, Bgc, for 76 z < 0.3 ULIRGs. We find the environment of ULIRGs is similar to galaxies in the field. Comparing our results with other galactic populations, we conclude that ULIRGs might be a phase in the lives of AGNs and QSOs, but not all moderate-luminosity QSOs necessarily pass through a ULIRG phase. To study the interstellar medium properties, we observe H I and other spectral lines in 77 U/LIRGs with the Arecibo telescope. We detect H I in emission or absorption in 61 of 77 galaxies, 52 being new detections. We compute the implied gas mass for galaxies with emission, and optical depths and column densities for the seven sources with absorption detections. To study the molecular gas in the nuclear region of LIRG Arp 193, sub-arcsecond scale angular resolution is required and a method of atmospheric phase correction imperative. We present results of a large experiment observing bright quasars to test the limitations of the Combined Array for Research in Millimeter Astronomy’s Paired Antenna Calibration System (C-PACS) for atmospheric phase correction. -
Interstellarum 52 • Juni/Juli 2007 1 Inhalt
Editorial fokussiert Liebe Leserinnen und Leser, gibt es tatsächlich Planeten um andere Sterne, die die Vorrausset- zungen für die Entwicklung von Leben erfüllen? Eine derartige Mel- dung machte Ende April die Runde, als die ESO die Entdeckung eines Planeten in der »bewohnbaren«, weil möglicherweise die Existenz fl üs- sigen Wassers erlaubenden Zone um den Stern Gliese 581 bekanntgab (Seite 18). Solche Berichte machen den Eindruck, die Entdeckung von Leben in anderen Sonnensystemen stehe unmittelbar bevor – doch Daniel Fischers Blick hinter die Kulissen zeigt, dass wir noch am Anfang der Suche nach Exoplaneten stehen (Seite 12). Wenn interstellarum Teleskope testet, dann richtig – mit mehrmo- natigem Praxistest und optischer Bank. Diesmal stehen drei apochro- Ronald Stoyan, Chefredakteur matische Refraktoren der neuen Generation auf dem Prüfstand, die die Entscheidung besonders schwer machen – und die Beurteilung zu einem Vergnügen für den Tester. In diesem Heft steht die visuelle Leis- tungsfähigkeit im Vordergrund (Seite 50), in der kommenden Ausgabe werden die fotografi schen Fähigkeiten nachgereicht. Übrigens: Falls Sie einen Fernrohr-Kauf planen, empfehle ich Ihnen unsere Neuer- scheinung »Fernrohrwahl«. Dort sind praktisch alle auf dem deutschen Markt erhältlichen Modelle tabellarisch aufgelistet. Neu im Verlagsprogramm ist ebenfalls eine neue Ausgabe der inter- stellarum Archiv-CD, diesmal mit PDF-Dokumenten der Heftnummern 32 bis 49 – bestellbar über unsere Internetseite www.interstellarum.de. Dort laden wir Sie auch zur Teilnahme an der bisher größten Leserum- frage unserer Geschichte ein, denn wir wollen mehr über Sie und Ihre astronomischen Vorlieben erfahren – natürlich anonym. Bitte helfen Sie uns, interstellarum noch mehr auf Ihre Bedürfnisse auszurichten. Ihr Titelbild: Wie ein Planet eines anderen Sterns aussieht ist reine Spekulation – doch die künstlerische Darstellung der ESO hilft der Vorstellungskraft auf die Sprünge. -
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 -
(2000) Forging Asteroid-Meteorite Relationships Through Reflectance
Forging Asteroid-Meteorite Relationships through Reflectance Spectroscopy by Thomas H. Burbine Jr. B.S. Physics Rensselaer Polytechnic Institute, 1988 M.S. Geology and Planetary Science University of Pittsburgh, 1991 SUBMITTED TO THE DEPARTMENT OF EARTH, ATMOSPHERIC, AND PLANETARY SCIENCES IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN PLANETARY SCIENCES AT THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY FEBRUARY 2000 © 2000 Massachusetts Institute of Technology. All rights reserved. Signature of Author: Department of Earth, Atmospheric, and Planetary Sciences December 30, 1999 Certified by: Richard P. Binzel Professor of Earth, Atmospheric, and Planetary Sciences Thesis Supervisor Accepted by: Ronald G. Prinn MASSACHUSES INSTMUTE Professor of Earth, Atmospheric, and Planetary Sciences Department Head JA N 0 1 2000 ARCHIVES LIBRARIES I 3 Forging Asteroid-Meteorite Relationships through Reflectance Spectroscopy by Thomas H. Burbine Jr. Submitted to the Department of Earth, Atmospheric, and Planetary Sciences on December 30, 1999 in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Planetary Sciences ABSTRACT Near-infrared spectra (-0.90 to ~1.65 microns) were obtained for 196 main-belt and near-Earth asteroids to determine plausible meteorite parent bodies. These spectra, when coupled with previously obtained visible data, allow for a better determination of asteroid mineralogies. Over half of the observed objects have estimated diameters less than 20 k-m. Many important results were obtained concerning the compositional structure of the asteroid belt. A number of small objects near asteroid 4 Vesta were found to have near-infrared spectra similar to the eucrite and howardite meteorites, which are believed to be derived from Vesta. -
Ngc Catalogue Ngc Catalogue
NGC CATALOGUE NGC CATALOGUE 1 NGC CATALOGUE Object # Common Name Type Constellation Magnitude RA Dec NGC 1 - Galaxy Pegasus 12.9 00:07:16 27:42:32 NGC 2 - Galaxy Pegasus 14.2 00:07:17 27:40:43 NGC 3 - Galaxy Pisces 13.3 00:07:17 08:18:05 NGC 4 - Galaxy Pisces 15.8 00:07:24 08:22:26 NGC 5 - Galaxy Andromeda 13.3 00:07:49 35:21:46 NGC 6 NGC 20 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 7 - Galaxy Sculptor 13.9 00:08:21 -29:54:59 NGC 8 - Double Star Pegasus - 00:08:45 23:50:19 NGC 9 - Galaxy Pegasus 13.5 00:08:54 23:49:04 NGC 10 - Galaxy Sculptor 12.5 00:08:34 -33:51:28 NGC 11 - Galaxy Andromeda 13.7 00:08:42 37:26:53 NGC 12 - Galaxy Pisces 13.1 00:08:45 04:36:44 NGC 13 - Galaxy Andromeda 13.2 00:08:48 33:25:59 NGC 14 - Galaxy Pegasus 12.1 00:08:46 15:48:57 NGC 15 - Galaxy Pegasus 13.8 00:09:02 21:37:30 NGC 16 - Galaxy Pegasus 12.0 00:09:04 27:43:48 NGC 17 NGC 34 Galaxy Cetus 14.4 00:11:07 -12:06:28 NGC 18 - Double Star Pegasus - 00:09:23 27:43:56 NGC 19 - Galaxy Andromeda 13.3 00:10:41 32:58:58 NGC 20 See NGC 6 Galaxy Andromeda 13.1 00:09:33 33:18:32 NGC 21 NGC 29 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 22 - Galaxy Pegasus 13.6 00:09:48 27:49:58 NGC 23 - Galaxy Pegasus 12.0 00:09:53 25:55:26 NGC 24 - Galaxy Sculptor 11.6 00:09:56 -24:57:52 NGC 25 - Galaxy Phoenix 13.0 00:09:59 -57:01:13 NGC 26 - Galaxy Pegasus 12.9 00:10:26 25:49:56 NGC 27 - Galaxy Andromeda 13.5 00:10:33 28:59:49 NGC 28 - Galaxy Phoenix 13.8 00:10:25 -56:59:20 NGC 29 See NGC 21 Galaxy Andromeda 12.7 00:10:47 33:21:07 NGC 30 - Double Star Pegasus - 00:10:51 21:58:39 -
Arp Catalogue.Xlsx
ATLAS OF PECULIAR GALAXIES CATALOGUE 1 ATLAS OF PECULIAR GALAXIES CATALOGUE Object Name Mag RA Dec Constellation ARP 1 NGC 2857 12.2 09:24:37 49:21:00 Ursa Major ARP 2 13.2 16:16:18 47:02:00 Hercules ARP 3 13.4 22:36:34 ‐02:54:00 Aquarius ARP 4 13.7 01:48:25 ‐12:22:00 Cetus ARP 5 NGC 3664 12.8 11:24:24 03:19:00 Leo ARP 6 NGC 2537 12.3 08:13:14 45:59:00 Lynx ARP 7 14.5 08:50:17 ‐16:34:00 Hydra ARP 8 NGC 0497 13 01:22:23 ‐00:52:00 Cetus ARP 9 NGC 2523 11.9 08:14:59 73:34:00 Camelopardalis ARP 10 13.8 02:18:26 05:39:00 Cetus ARP 11 14.4 01:09:23 14:20:00 Pisces ARP 12 NGC 2608 12.2 08:35:17 28:28:00 Cancer ARP 13 NGC 7448 11.6 23:00:02 15:59:00 Pegasus ARP 14 NGC 7314 10.9 22:35:45 ‐26:03:00 Pisces Austrinus ARP 15 NGC 7393 12.6 22:51:39 ‐05:33:00 Aquarius ARP 16 M66 8.9 11:20:14 12:59:00 Leo ARP 17 14.7 07:44:32 73:49:00 Camelopardalis ARP 17 07:44:38 73:48:00 Camelopardalis ARP 18 NGC 4088 10.5 12:05:35 50:32:00 Ursa Major ARP 19 NGC 0145 13.2 00:31:45 ‐05:09:00 Cetus ARP 20 14.4 04:19:53 02:05:00 Taurus ARP 21 14.7 11:04:58 30:01:00 Leo Minor ARP 22 14.9 11:59:29 ‐19:19:00 Corvus ARP 22 NGC 4027 11.2 11:59:30 ‐19:15:00 Corvus ARP 23 NGC 4618 10.8 12:41:32 41:09:00 Canes Venatici ARP 24 NGC 3445 12.6 10:54:36 56:59:00 Ursa Major ARP 24 12.8 10:54:45 56:57:00 Ursa Major ARP 25 NGC 2276 11.4 07:27:13 85:45:00 Cepheus ARP 26 M101 7.9 14:03:12 54:21:00 Ursa Major ARP 27 NGC 3631 10.4 11:21:02 53:10:00 Ursa Major ARP 28 NGC 7678 11.8 23:28:27 22:25:00 Pegasus ARP 29 NGC 6946 8.8 20:34:52 60:09:00 Cygnus ARP 30 NGC 6365 12.2 17:22:42 62:10:00 -
1987Aj 93. . 738T the Astronomical Journal
738T . THE ASTRONOMICAL JOURNAL VOLUME 93, NUMBER 3 MARCH 1987 93. DISCOVERY OF M CLASS OBJECTS AMONG THE NEAR-EARTH ASTEROID POPULATION Edward F. TEDEScoa),b) Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 1987AJ Jonathan Gradie20 Planetary Geosciences Division, Hawaii Institute of Geophysics, University of Hawaii, Honolulu, Hawaii 96822 Received 10 September 1986; revised 17 November 1986 ABSTRACT Broadband colorimetry (0.36 to 0.85 ¡um), visual photometry, near-infrared (JHK) photometry, and 10 and 20 /urn radiometry of the near-Earth asteroids 1986 DA and 1986 EB were obtained during March and April 1986. Model radiometric visual geometric albedos of 0.14 + 0.02 and 0.19 + 0.02 and model radiometric diameters of 2.3 + 0.1 and 2.0 + 0.1 km, respectively, (on the IRAS asteroid ther- mal model system described by Lebofsky et al. 1986) were derived from the thermal infrared and visual fluxes. These albedos, together with the colorimetric and (for 1986 DA) near-infrared data, establish that both objects belong to the M taxonomic class, the first of this kind to be recognized among the near-Earth asteroid population. This discovery, together with previous detections of C and S class objects, establishes that all three of the most common main-belt asteroid classes are represented among this population. The similarity in the corrected distribution of taxonomic classes among the 38 Earth- approaching asteroids for which such classes exist is similar to those regions of the main belt between the 3:1 (2.50 AU) and 5:2 (2.82 AU) orbital resonances with Jupiter, suggesting that they have their origins among asteroids in the vicinity of these resonances. -
Arp's Peculiar Galaxies - Supplementary Index the Deep Space CCD Atlas: North Presents 153 of the 338 Views Selected by Halton C
Arp's Peculiar Galaxies - Supplementary Index The Deep Space CCD Atlas: North presents 153 of the 338 views selected by Halton C. Arp in his 1966 Atlas of Peculiar Galaxies. An asterisk (*) indicates that the galaxy is not identified by its Arp number in the CCD Atlas or its index. The headings are the categories (a "preliminary" taxonomy) Arp established with his 1966 Atlas. Arp Common name Page Arp Common name Page Arp Common name Page Spiral Galaxies: 116 MESSIER 60 143 239 NGC 5278 + 79 152 LOW SURFACE BRIGHTNESS 120 NGC 4438 + 35 134* 240 NGC 5257 + 58 152 1 NGC 2857 99 122 NGC 6040A + B 167* 242 The Mice 143 2 UGC 10310 168* 123 NGC 1888 + 89 49 243 NGC 2623 93 3 MCG-01-57-016 245 124 NGC 6361 + comp 177* 244 NGC 4038 + 39 123* 5 NGC 3664 116 WITH NEARBY FRAGMENTS 245 NGC 2992 + 93 101 6 NGC 2537 90* 133 NGC 0541 15* 246 NGC 7838 + 37 1* SPLIT ARM 134 MESSIER 49 136* 248 Wild's Triplet 120 8 NGC 0497 14 135 NGC 1023 29* IRREGULAR CLUMPS 9 NGC 2523 91* 136 NGC 5820 161* 259 NGC 1741 group 47 12 NGC 2608 92* MATERIAL EMANATING FROM E 263 NGC 3239 107 DETACHED SEGMENTS GALAXIES 264 NGC 3104 104 13 NGC 7448 248* 137 NGC 2914 99* 266 NGC 4861 147 14 NGC 7314 245* 140 NGC 0275 + 74 9* 268 Holmberg II 91 15 NGC 7393 247 142 NGC 2936 + 37 100 16 MESSIER 66 114* 143 NGC 2444 + 45 85 Group Character 18 NGC 4088 124* CONNECTED ARMS THREE-ARMED Galaxies 269 NGC 4490 + 85 136* 19 NGC 0145 3 WITH ASSOCIATED RINGS 270 NGC 3395 + 96 110* 22 NGC 4027 123* 148 Mayall's Object 112 271 NGC 5426 + 27 156 ONE-ARMED WITH JETS 272 NGC 6050 + IC1174 168*