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GEOLOGIC MAPPING OF THE LUNAR SOUTH POLE QUADRANGLE (LQ-30). S.C. Mest1,2, D.C. Ber- man1, and N.E. Petro2, 1Planetary Science Institute, 1700 E. Ft. Lowell, Suite 106, Tucson, AZ 85719-2395 ([email protected]); 2Planetary Geodynamics Laboratory, Code 698, NASA GSFC, Greenbelt, MD 20771. Introduction: In this study we use recent image, the surface [7]. Impact craters display morphologies spectral and topographic data to map the geology of the ranging from simple to complex [7-9,24] and most lunar South Pole quadrangle (LQ-30) at 1:2.5M scale contain floor deposits distinct from surrounding mate- [1-7]. The overall objective of this research is to con- rials. Most of these deposits likely consist of impact strain the geologic evolution of LQ-30 (60°-90°S, 0°- melt; however, some deposits, especially on the floors ±180°) with specific emphasis on evaluation of a) the of the larger craters and basins (e.g., Antoniadi), ex- regional effects of impact basin formation, and b) the hibit low albedo and smooth surfaces and may contain spatial distribution of ejecta, in particular resulting mare. Higher albedo deposits tend to contain a higher from formation of the South Pole-Aitken (SPA) basin density of superposed impact craters. and other large basins. Key scientific objectives in- Antoniadi Crater. Antoniadi crater (D=150 km; clude: 1) Determining the geologic history of LQ-30 69.5°S, 172°W) is unique for several reasons. First, and examining the spatial and temporal variability of Antoniadi is the only lunar crater that contains both a geologic processes within the map area. -
Pulsation and Rotation in NGC 6811: the Kepler Short-Cadence Stars
MNRAS 491, 4345–4364 (2020) doi:10.1093/mnras/stz3143 Advance Access publication 2019 November 12 Pulsation and rotation in NGC 6811: the Kepler short-cadence stars E. Rodr´ıguez ,1‹ L. A. Balona ,2‹ M. J. Lopez-Gonz´ alez,´ 1‹ S. Ocando,1 S. Mart´ın-Ruiz1 and C. Rodr´ıguez-Lopez´ 1 Downloaded from https://academic.oup.com/mnras/article-abstract/491/3/4345/5622881 by Universidad de Granada - Biblioteca user on 29 April 2020 1Instituto de Astrof´ısica de Andaluc´ıa, CSIC, PO Box 3004, E-18080 Granada, Spain 2South African Astronomical Observatory, PO Box 9, Observatory, Cape 2735, South Africa Accepted 2019 November 6. Received 2019 November 6; in original form 2019 September 11 ABSTRACT We have analysed a selected sample of 36 Kepler short-cadence stars in the field of NGC 6811. The results reveal that all the targets are variable: two red giant stars with solar-like oscillations, 21 main-sequence pulsators (16 δ Scuti and five γ Doradus stars), and 13 rotating variables. Three new γ Doradus (γ Dor) variables (one is a hot γ Dor star) are detected in this work together with five new rotating variables. An in-depth frequency analysis of the δ Scuti (δ Sct) and γ Dor stars in the sample shows that the frequency spectra are very rich, in particular for the δ Sct-type variables. They present very dense frequency distributions and wide diversity in frequency patterns, even for stars being members of the cluster and with very similar location in the Hertzsprung–Russell (H–R) diagram. -
Glossary Glossary
Glossary Glossary Albedo A measure of an object’s reflectivity. A pure white reflecting surface has an albedo of 1.0 (100%). A pitch-black, nonreflecting surface has an albedo of 0.0. The Moon is a fairly dark object with a combined albedo of 0.07 (reflecting 7% of the sunlight that falls upon it). The albedo range of the lunar maria is between 0.05 and 0.08. The brighter highlands have an albedo range from 0.09 to 0.15. Anorthosite Rocks rich in the mineral feldspar, making up much of the Moon’s bright highland regions. Aperture The diameter of a telescope’s objective lens or primary mirror. Apogee The point in the Moon’s orbit where it is furthest from the Earth. At apogee, the Moon can reach a maximum distance of 406,700 km from the Earth. Apollo The manned lunar program of the United States. Between July 1969 and December 1972, six Apollo missions landed on the Moon, allowing a total of 12 astronauts to explore its surface. Asteroid A minor planet. A large solid body of rock in orbit around the Sun. Banded crater A crater that displays dusky linear tracts on its inner walls and/or floor. 250 Basalt A dark, fine-grained volcanic rock, low in silicon, with a low viscosity. Basaltic material fills many of the Moon’s major basins, especially on the near side. Glossary Basin A very large circular impact structure (usually comprising multiple concentric rings) that usually displays some degree of flooding with lava. The largest and most conspicuous lava- flooded basins on the Moon are found on the near side, and most are filled to their outer edges with mare basalts. -
Guide to the Betty J. Meggers and Clifford Evans Papers
Guide to the Betty J. Meggers and Clifford Evans papers Tyler Stump and Adam Fielding Funding for the processing of this collection was provided by the Smithsonian Institution's Collections Care and Preservation Fund. December 2015 National Anthropological Archives Museum Support Center 4210 Silver Hill Road Suitland, Maryland 20746 [email protected] http://www.anthropology.si.edu/naa/ Table of Contents Collection Overview ........................................................................................................ 1 Administrative Information .............................................................................................. 1 Biographical / Historical.................................................................................................... 2 Scope and Contents........................................................................................................ 5 Arrangement..................................................................................................................... 5 Bibliography...................................................................................................................... 6 Names and Subjects ...................................................................................................... 6 Container Listing ............................................................................................................. 8 Series 1: Personal, 1893-2012................................................................................. 8 Series 2: Writings, 1944-2011............................................................................... -
Human Spatial Orientation Perceptions During Simulated Lunar Landing
Human Spatial Orientation Perceptions during Simulated Lunar Landing By Torin Kristofer Clark B.S. Aerospace Engineering University of Colorado at Boulder, 2008 SUBMITTED TO THE DEPARTMENT OF AERONAUTICS AND ASTRONAUTICS IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN AERONAUTICS AND ASTRONAUTICS AT THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 2010 © 2010 Massachusetts Institute of Technology All rights reserved Signature of Author: ____________________________________________________________ Torin K. Clark Department of Aeronautics and Astronautics May 21, 2010 Certified by: ___________________________________________________________________ Laurence R. Young Apollo Program Professor of Astronautics Professor of Health Sciences and Technology Thesis Supervisor Certified by: ___________________________________________________________________ Kevin R. Duda Senior Member, Technical Staff, Draper Laboratory Thesis Supervisor Accepted by: __________________________________________________________________ Eytan H. Modiano Associate Professor of Aeronautics and Astronautics Chair, Committee on Graduate Students 1 ABSTRACT During crewed lunar landings, astronauts are expected to guide a stable and controlled descent to a landing zone that is level and free of hazards by either making landing point (LP) redesignations or taking direct manual control. However, vestibular and visual sensorimotor limitations unique to lunar landing may interfere with landing performance and safety. Vehicle motion profiles of candidate -
The Discovery of Herbig-Haro Objects in Ldn 673
Draft version December 4, 2017 Typeset using LATEX default style in AASTeX61 THE DISCOVERY OF HERBIG-HARO OBJECTS IN LDN 673 T. A. Rector1 | R. Y. Shuping2 | L. Prato3 | H. Schweiker4, 5, 6 | 1Department of Physics and Astronomy, University of Alaska Anchorage, Anchorage, AK 99508, USA 2Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA 3Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001, USA 4National Optical Astronomy Observatory, Tucson, AZ 85719, USA 5Kitt Peak National Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation. 6WIYN Observatory, Tucson, AZ 85719, USA ABSTRACT We report the discovery of twelve faint Herbig-Haro (HH) objects in LDN 673 found using a novel color-composite imaging method that reveals faint Hα emission in complex environments. Follow-up observations in [S II] confirmed their classification as HH objects. Potential driving sources are identified from the Spitzer c2d Legacy Program catalog and other infrared observations. The twelve new HH objects can be divided into three groups: Four are likely associated with a cluster of eight YSO class I/II IR sources that lie between them; five are colinear with the T Tauri multiple star system AS 353, and are likely driven by the same source as HH 32 and HH 332; three are bisected by a very red source that coincides with an infrared dark cloud. We also provide updated coordinates for the three components of HH 332. Inaccurate numbers were given for this object in the discovery paper. -
Arxiv:1001.0139V1 [Astro-Ph.SR] 31 Dec 2009 Oadl Gilliland, L
Publications of the Astronomical Society of the Pacific Kepler Asteroseismology Program: Introduction and First Results Ronald L. Gilliland,1 Timothy M. Brown,2 Jørgen Christensen-Dalsgaard,3 Hans Kjeldsen,3 Conny Aerts,4 Thierry Appourchaux,5 Sarbani Basu,6 Timothy R. Bedding,7 William J. Chaplin,8 Margarida S. Cunha,9 Peter De Cat,10 Joris De Ridder,4 Joyce A. Guzik,11 Gerald Handler,12 Steven Kawaler,13 L´aszl´oKiss,7,14 Katrien Kolenberg,12 Donald W. Kurtz,15 Travis S. Metcalfe,16 Mario J.P.F.G. Monteiro,9 Robert Szab´o,14 Torben Arentoft,3 Luis Balona,17 Jonas Debosscher,4 Yvonne P. Elsworth,8 Pierre-Olivier Quirion,3,18 Dennis Stello,7 Juan Carlos Su´arez,19 William J. Borucki,20 Jon M. Jenkins,21 David Koch,20 Yoji Kondo,22 David W. Latham,23 Jason F. Rowe,20 and Jason H. Steffen24 arXiv:1001.0139v1 [astro-ph.SR] 31 Dec 2009 –2– ABSTRACT Asteroseismology involves probing the interiors of stars and quantifying their global properties, such as radius and age, through observations of normal modes of oscillation. The technical requirements for conducting asteroseismology in- clude ultra-high precision measured in photometry in parts per million, as well as nearly continuous time series over weeks to years, and cadences rapid enough 1Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA; [email protected] 2Las Cumbres Observatory Global Telescope, Goleta, CA 93117, USA 3Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark 4Instituut voor Sterrenkunde, K.U.Leuven, Celestijnenlaan 200 D, 3001, Leuven, Belgium 5Institut d’Astrophysique Spatiale, Universit´eParis XI, Bˆatiment 121, 91405 Orsay Cedex, France 6Astronomy Department, Yale University, P.O. -
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. -
University of Cincinnati
UNIVERSITY OF CINCINNATI Date:__7/30/07_________________ I, __ MUNISH GUPTA_____________________________________, hereby submit this work as part of the requirements for the degree of: DOCTORATE OF PHILOSOPHY (Ph.D) in: MATERIALS SCIENCE AND ENGINEERING It is entitled: LOW-PRESSURE AND ATMOSPHERIC PRESSURE PLASMA POLYMERIZED SILICA-LIKE FILMS AS PRIMERS FOR ADHESIVE BONDING OF ALUMINUM This work and its defense approved by: Chair: __Dr. F. JAMES BOERIO ___ ______ __Dr. GREGORY BEAUCAGE __ ___ __ __Dr. RODNEY ROSEMAN _____ ___ __Dr. JUDE IROH _ _____________ _______________________________ LOW-PRESSURE AND ATMOSPHERIC PRESSURE PLASMA POLYMERIZED SILICA-LIKE FILMS AS PRIMERS FOR ADHESIVE BONDING OF ALUMINUM A dissertation submitted to the Division of Research and Advanced Studies of the University of Cincinnati in partial fulfillment of the requirements for the degree of DOCTORATE OF PHILOSOPHY (Ph.D) in the Department of Chemical and Material Engineering of the College of Engineering 2007 by Munish Gupta M.S., University of Cincinnati, 2005 B.E., Punjab Technical University, India, 2000 Committee Chair: Dr. F. James Boerio i ABSTRACT Plasma processes, including plasma etching and plasma polymerization, were investigated for the pretreatment of aluminum prior to structural adhesive bonding. Since native oxides of aluminum are unstable in the presence of moisture at elevated temperature, surface engineering processes must usually be applied to aluminum prior to adhesive bonding to produce oxides that are stable. Plasma processes are attractive for surface engineering since they take place in the gas phase and do not produce effluents that are difficult to dispose off. Reactive species that are generated in plasmas have relatively short lifetimes and form inert products. -
The Future of the GBT
The Future of the GBT Felix J. Lockman NRAO Green Bank Arecibo, July 2009 UNOFFICIAL The Future of the GBT Felix J. Lockman NRAO Green Bank Arecibo, July 2009 Characteristics of the GBT Large Collecting Area Sensitive to Low Surface Brightness Sky Coverage & Tracking (>85%) Angular Resolution Frequency Coverage Radio Quiet Zone Unblocked Aperture state-of-art receivers & detectors modern control software flexible scheduling Unique capabilities which complement EVLA, VLBA, and ALMA The Advantage of Unblocked Optics Dynamic Range Near sidelobes reduced by a factor >10 from conventional antennas Gain & Sensitivity The 100 meter diameter GBT performs better than a 120 meter conventional antenna Reduced Interference 2002 panels active surface retroreflectors for future metrology A telescope designed to be enhanced Unique active surface →Unlike any other radio telescope← Green Bank and the GBT A telescope that works well over a factor of 1000 in frequency/wavelength / energy -- equivalent to the range from the infrared (10μ) to the soft X-ray (0.01μ) GALEX HST Chandra Spitzer “...just hitting its stride” Future Prospects & Development at NRAO and in the US Radio Community ~ 2008 NRAO Staff Retreat 4 AOC Auditorium, NRAO, Socorro, NM ~ April 10-11, 2008 A telescope for fundamental physics The fastest pulsars test our understanding of matter at the most extreme densities “A Radio Pulsar Spinning at 716 Hz” Hessels et al 2006 Science A telescope for fundamental physics The fastest pulsars test our understanding of matter at the most extreme densities -
Relative Ages
CONTENTS Page Introduction ...................................................... 123 Stratigraphic nomenclature ........................................ 123 Superpositions ................................................... 125 Mare-crater relations .......................................... 125 Crater-crater relations .......................................... 127 Basin-crater relations .......................................... 127 Mapping conventions .......................................... 127 Crater dating .................................................... 129 General principles ............................................. 129 Size-frequency relations ........................................ 129 Morphology of large craters .................................... 129 Morphology of small craters, by Newell J. Fask .................. 131 D, method .................................................... 133 Summary ........................................................ 133 table 7.1). The first three of these sequences, which are older than INTRODUCTION the visible mare materials, are also dominated internally by the The goals of both terrestrial and lunar stratigraphy are to inte- deposits of basins. The fourth (youngest) sequence consists of mare grate geologic units into a stratigraphic column applicable over the and crater materials. This chapter explains the general methods of whole planet and to calibrate this column with absolute ages. The stratigraphic analysis that are employed in the next six chapters first step in reconstructing -
Parrots in the Wild
Magazine of the World Parrot Trust May 2002 No.51 PsittaScene PsittaSceneParrots in the Wild Kakapo chicks in the nest (Strigops habroptilus) Photo by DON MERTON The most productive season since Kakapo have been intensively managed, 26 chicks had hatched by April. The female called Flossie Members’had two. Seen here are twoExpedition! young she hatched in February 1998. Our report on page 16 describes how she feeds her chicks 900 rimu fruits at each feed - at least four times every night! Supporting parrot conservation in the wild and promoting parrot welfare in captivity. Printed by Brewers of Helston Ltd. Tel: 01326 558000. ‘psittacine’ (pronounced ‘sit a sin’) meaning ‘belonging or allied to the parrots’ or ‘parrot-like’ 0 PsittaPsitta African Grey Parrot SceneScene Trade in Cameroon Lobeke National Park Editor By ANASTASIA NGENYI, Volunteer Biologist, Rosemary Low, WWF Jengi SE Forest Project, BP 6776, Yaounde, Cameroon Glanmor House, Hayle, Cornwall, The forest region of Lobeke in the Southeast corner of Cameroon has TR27 4HB, UK been the focus of attention over the past decade at national and international level, owing to its rich natural resource. Its outstanding conservation importance is due to its abundance of Anastasia Ngenyi. fauna and the rich variety of commercial tree species. Natural CONTENTS resources in the area face numerous threats due to the increased demand in resource exploitation by African Grey Parrot Trade ..................2-3 the local communities and commercial pressure owing to logging and poaching for the bush meat trade. Palm Sunday Success ............................4 The area harbours an unusually high density of could generate enormous revenue that most likely Conservation Beyond the Cage ..............5 forest mammals' particularly so-called "charismatic would surpass present income from illegal trade in Palm Cockatoo Conservation ..............6-7 megafauna" such as elephants, gorillas and parrots.