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Asteroid Regolith Weathering: a Large-Scale Observational Investigation
University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Doctoral Dissertations Graduate School 5-2019 Asteroid Regolith Weathering: A Large-Scale Observational Investigation Eric Michael MacLennan University of Tennessee, [email protected] Follow this and additional works at: https://trace.tennessee.edu/utk_graddiss Recommended Citation MacLennan, Eric Michael, "Asteroid Regolith Weathering: A Large-Scale Observational Investigation. " PhD diss., University of Tennessee, 2019. https://trace.tennessee.edu/utk_graddiss/5467 This Dissertation is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a dissertation written by Eric Michael MacLennan entitled "Asteroid Regolith Weathering: A Large-Scale Observational Investigation." I have examined the final electronic copy of this dissertation for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Doctor of Philosophy, with a major in Geology. Joshua P. Emery, Major Professor We have read this dissertation and recommend its acceptance: Jeffrey E. Moersch, Harry Y. McSween Jr., Liem T. Tran Accepted for the Council: Dixie L. Thompson Vice Provost and Dean of the Graduate School (Original signatures are on file with official studentecor r ds.) Asteroid Regolith Weathering: A Large-Scale Observational Investigation A Dissertation Presented for the Doctor of Philosophy Degree The University of Tennessee, Knoxville Eric Michael MacLennan May 2019 © by Eric Michael MacLennan, 2019 All Rights Reserved. -
Cometary Impactors on the TRAPPIST-1 Planets Can Destroy All Planetary Atmospheres and Rebuild Secondary Atmospheres on Planets F, G, H
Mon. Not. R. Astron. Soc. 000, 1{28 (2002) Printed 4 July 2018 (MN LATEX style file v2.2) Cometary impactors on the TRAPPIST-1 planets can destroy all planetary atmospheres and rebuild secondary atmospheres on planets f, g, h Quentin Kral,1? Mark C. Wyatt,1 Amaury H.M.J. Triaud,1;2 Sebastian Marino, 1 Philippe Th´ebault, 3 Oliver Shorttle, 1;4 1Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK 2School of Physics & Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK 3LESIA-Observatoire de Paris, UPMC Univ. Paris 06, Univ. Paris-Diderot, France 4Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UK Accepted 1928 December 15. Received 1928 December 14; in original form 1928 October 11 ABSTRACT The TRAPPIST-1 system is unique in that it has a chain of seven terrestrial Earth-like planets located close to or in its habitable zone. In this paper, we study the effect of potential cometary impacts on the TRAPPIST-1 planets and how they would affect the primordial atmospheres of these planets. We consider both atmospheric mass loss and volatile delivery with a view to assessing whether any sort of life has a chance to develop. We ran N-body simulations to investigate the orbital evolution of potential impacting comets, to determine which planets are more likely to be impacted and the distributions of impact velocities. We consider three scenarios that could potentially throw comets into the inner region (i.e within 0.1au where the seven planets are located) from an (as yet undetected) outer belt similar to the Kuiper belt or an Oort cloud: Planet scattering, the Kozai-Lidov mechanism and Galactic tides. -
Kuiper Belt and Comets: an Observational Perspective
Kuiper Belt and Comets: An Observational Perspective David Jewitt1 1. Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 [email protected] Note to the Reader These notes outline a series of lectures given at the Saas Fee Winter School held in Murren, Switzerland, in March 2005. As I see it, the main aim of the Winter School is to communicate (especially) with young people in order to inflame their interests in science and to encourage them to see ways in which they can contribute and maybe do a better job than we have done so far. With this in mind, I have written up my lectures in a less than formal but hopefully informative and entertaining style, and I have taken a few detours to discuss subjects that I think are important but which are usually glossed-over in the scientific literature. 1 Preamble Almost exactly 400 years ago, planetary astronomy kick-started the era of modern science, with a series of remarkable discoveries by Galileo concerning the surfaces of the Moon and Sun, the phases of Venus, and the existence and motions of Jupiter’s large satellites. By the early 20th century, the fo- cus of astronomical attention had turned to objects at larger distances, and to questions of galactic structure and cosmological interest. At the start of the 21st century, the tide has turned again. The study of the Solar system, particularly of its newly discovered outer parts, is one of the hottest topics in modern astrophysics with great potential for revealing fundamental clues about the origin of planets and even the emergence of life. -
The Planetary and Lunar Ephemeris DE 421
IPN Progress Report 42-178 • August 15, 2009 The Planetary and Lunar Ephemeris DE 421 William M. Folkner,* James G. Williams,† and Dale H. Boggs† The planetary and lunar ephemeris DE 421 represents updated estimates of the orbits of the Moon and planets. The lunar orbit is known to submeter accuracy through fitting lunar laser ranging data. The orbits of Venus, Earth, and Mars are known to subkilometer accu- racy. Because of perturbations of the orbit of Mars by asteroids, frequent updates are needed to maintain the current accuracy into the future decade. Mercury’s orbit is determined to an accuracy of several kilometers by radar ranging. The orbits of Jupiter and Saturn are determined to accuracies of tens of kilometers as a result of spacecraft tracking and modern ground-based astrometry. The orbits of Uranus, Neptune, and Pluto are not as well deter- mined. Reprocessing of historical observations is expected to lead to improvements in their orbits in the next several years. I. Introduction The planetary and lunar ephemeris DE 421 is a significant advance over earlier ephemeri- des. Compared with DE 418, released in July 2007,1 the DE 421 ephemeris includes addi- tional data, especially range and very long baseline interferometry (VLBI) measurements of Mars spacecraft; range measurements to the European Space Agency’s Venus Express space- craft; and use of current best estimates of planetary masses in the integration process. The lunar orbit is more robust due to an expanded set of lunar geophysical solution parameters, seven additional months of laser ranging data, and complete convergence. -
Collisional Activation of Asteroids in Cometary Orbits
A&A 487, 363–367 (2008) Astronomy DOI: 10.1051/0004-6361:20079236 & c ESO 2008 Astrophysics Collisional activation of asteroids in cometary orbits C. G. Díaz2 and R. Gil-Hutton1,2 1 Complejo Astronómico El Leoncito – CONICET – Av. España 1512 sur, J5402DSP San Juan, Argentina e-mail: [email protected] 2 Universidad Nacional de San Juan – Av. J. I. de la Roza 590 oeste, 5400 Rivadavia, San Juan, Argentina e-mail: [email protected] Received 12 December 2007 / Accepted 27 April 2008 ABSTRACT Aims. We study the time an asteroid in a cometary orbit must wait to receive a collision producing a crater depth enough to expose subsurface volatiles, aiming to analyze the possibility of collisional reactivation of these objects if they are dormant comets. Methods. We perform a numerical integration of the asteroids in cometary orbits and a population of projectiles to find the mean intrinsic collision probabilities and mean impact velocities of the targets. The projectile population was obtained as a sample with the same distribution of orbital elements as observed for main belt asteroids, and we also take into account that its size distribution changes for different size ranges. Only 206 asteroids in cometary orbits, that are not members of other asteroid groups, with a Tisserand parameter 2 ≤ TJ ≤ 2.9 and perihelion distance q > 1.3 AU were considered. Results. A large fraction of the objects in the sample receive at least 1 collision energetic enough to break the comet crust and allow a dormant comet to reach an active state in a period shorter than a Jupiter Family Comet dynamical lifetime. -
Cumulative Index to Volumes 1-45
The Minor Planet Bulletin Cumulative Index 1 Table of Contents Tedesco, E. F. “Determination of the Index to Volume 1 (1974) Absolute Magnitude and Phase Index to Volume 1 (1974) ..................... 1 Coefficient of Minor Planet 887 Alinda” Index to Volume 2 (1975) ..................... 1 Chapman, C. R. “The Impossibility of 25-27. Index to Volume 3 (1976) ..................... 1 Observing Asteroid Surfaces” 17. Index to Volume 4 (1977) ..................... 2 Tedesco, E. F. “On the Brightnesses of Index to Volume 5 (1978) ..................... 2 Dunham, D. W. (Letter regarding 1 Ceres Asteroids” 3-9. Index to Volume 6 (1979) ..................... 3 occultation) 35. Index to Volume 7 (1980) ..................... 3 Wallentine, D. and Porter, A. Index to Volume 8 (1981) ..................... 3 Hodgson, R. G. “Useful Work on Minor “Opportunities for Visual Photometry of Index to Volume 9 (1982) ..................... 4 Planets” 1-4. Selected Minor Planets, April - June Index to Volume 10 (1983) ................... 4 1975” 31-33. Index to Volume 11 (1984) ................... 4 Hodgson, R. G. “Implications of Recent Index to Volume 12 (1985) ................... 4 Diameter and Mass Determinations of Welch, D., Binzel, R., and Patterson, J. Comprehensive Index to Volumes 1-12 5 Ceres” 24-28. “The Rotation Period of 18 Melpomene” Index to Volume 13 (1986) ................... 5 20-21. Hodgson, R. G. “Minor Planet Work for Index to Volume 14 (1987) ................... 5 Smaller Observatories” 30-35. Index to Volume 15 (1988) ................... 6 Index to Volume 3 (1976) Index to Volume 16 (1989) ................... 6 Hodgson, R. G. “Observations of 887 Index to Volume 17 (1990) ................... 6 Alinda” 36-37. Chapman, C. R. “Close Approach Index to Volume 18 (1991) .................. -
The Minor Planet Bulletin (Warner Et Al
THE MINOR PLANET BULLETIN OF THE MINOR PLANETS SECTION OF THE BULLETIN ASSOCIATION OF LUNAR AND PLANETARY OBSERVERS VOLUME 35, NUMBER 4, A.D. 2008 OCTOBER-DECEMBER 143. THE LIGHTCURVE OF ASTEROID 5331 ERIMOMISAKI 05 and Jan 09, respectively. The Vincent data were taken under poor conditions, which is reflected by the large error bars. Caleb Boe, Russell I. Durkee However, the data support the proposed period and were crucial in Shed of Science Observatory completing the curve. Analysis was performed using MPO 5213 Washburn Ave S. Minneapolis, MN 55410, USA Canopus. Silvano Casulli Acknowledgments Vallemare Di Borbona Observatory, Vallemare di Borbona, ITALY Thanks to Raoul Behrend for posting Casulli’s results on his website and for coordinating the exchange of data. Dr. Fiona Vincent School of Physics & Astronomy Special thanks to the Tzec Maun Foundation and its founder, University of St. Andrews Michael K. Wilson, for providing free access to telescopes for North Haugh, St. Andrews KY16 9SS, Scotland, UK students and researchers. David Higgins References Hunters Hill Observatory Ngunnawal, Canberra 2913 Behrend, R. (2007). Observatoire de Geneve web site, AUSTRALIA http://obswww.unige.ch/~behrend/page1cou.html (Received: 2008 June 1) Warner, B.D., Harris A.W. , Pravec, P. Kaasalainen, M., and Benner, L.A.M. (2007). Lightcurve Photometry Opportunities October-December 2007 Asteroid 5331 Erimomisaki was observed between 2007 http://minorplanetobserver.com/astlc/default.htm Nov. 30 and 2008 Jan. 9. A synodic period of 24.26 ± 0.02 h with a mean amplitude of 0.27 ± 0.02 mag was derived. Observations of 5331 Erimomisaki were carried out over ten nights between 2007 November and 2008 January. -
Download Full Issue
THE MINOR PLANET BULLETIN OF THE MINOR PLANETS SECTION OF THE BULLETIN ASSOCIATION OF LUNAR AND PLANETARY OBSERVERS VOLUME 47, NUMBER 1, A.D. 2020 JANUARY-MARCH 1. SECTION NEWS: COLLABORATIVE ASTEROID PHOTOMETRY FOR STAFFING CHANGES FOR ASTEROID 2051 CHANG THE MINOR PLANET BULLETIN Alessandro Marchini Frederick Pilcher Astronomical Observatory, DSFTA - University of Siena (K54) Minor Planets Section Recorder Via Roma 56, 53100 - Siena, ITALY [email protected] [email protected] One staffing change and one staffing addition for The Minor Planet Bulletin are announced effective with this issue. Riccardo Papini, Massimo Banfi, Fabio Salvaggio Wild Boar Remote Observatory (K49) MPB Distributor Derald Nye is now retired from his 37 years of San Casciano in Val di Pesa (FI), ITALY service to the Minor Planets Bulletin. Derald stepped in to service at the time the MPB made its transition from the original Editor Melissa N. Hayes-Gehrke, Eric Yates and Section founder, Richard G. Hodgson. As Derald reflected in Department of Astronomy, University of Maryland a short essay written in MPB 40, page 53 (2013), the Distributor College Park, MD, USA 20740 position was the longest job he ever held, having retired from being a programmer for 30 years with IBM. (Work for IBM (Received: 2019 October 15) included programming for the space program.) At its peak, Derald was managing nearly 200 subscriptions. That number dropped to Photometric observations of this main-belt asteroid were the dozen or so libraries maintaining a permanent collection conducted in order to determine its rotation period. The following the MPB transitioning to becoming an on-line electronic authors found a synodic rotation period of 12.013 ± journal with limited printing. -
Ice & Stone 2020
Ice & Stone 2020 WEEK 9: FEBRUARY 23-29, 2020 Presented by The Earthrise Institute # 9 Authored by Alan Hale This week in history FEBRUARY 23 24 25 26 27 28 29 FEBRUARY 23, 1988: David Levy obtains the final visual observation of Comet 1P/Halley during its 1986 eturn,r using the 1.5-meter telescope at Catalina Observatory in Arizona. The comet was located 8.0 AU from the sun and appeared at 17th magnitude. FEBRUARY 23 24 25 26 27 28 29 FEBRUARY 24, 1979: The U.S. Defense Department satellite P78-1 is launched from Vandenberg Air Force Base in California. One of P78-1’s instruments was the SOLWIND coronagraph, which detected ten comets between 1979 and 1984, nine of which were Kreutz sungrazers and the first of these being the first comet ever discovered from space. SOLWIND continued to operate up until the time P78-1 was deliberately destroyed in September 1985 as part of an Anti-Satellite weapon (ASAT) test. The first SOLWIND comet is a future “Comet of the Week” and Kreutz sungrazers as a whole are the subject of a future “Special Topics” presentation. FEBRUARY 23 24 25 26 27 28 29 FEBRUARY 25, 1976: Comet West 1975n passes through perihelion at a heliocentric distance of 0.197 AU. Comet West, which is next week’s “Comet of the Week,” was one of the brightest comets that appeared during the second half of the 20th Century, and I personally consider it the best comet I have ever seen. COVER IMAGEs CREDITS: Front cover: Three impact craters of different sizes, arranged in the shape of a snowman, make up one of the most striking features on Vesta, as seen in this view from NASA’s Dawn mission. -
Meteor Showers
Gary W. Kronk Meteor Showers An Annotated Catalog Second Edition The Patrick Moore The Patrick Moore Practical Astronomy Series For further volumes: http://www.springer.com/series/3192 Meteor Showers An Annotated Catalog Gary W. Kronk Second Edition Gary W. Kronk Hillsboro , MO , USA ISSN 1431-9756 ISBN 978-1-4614-7896-6 ISBN 978-1-4614-7897-3 (eBook) DOI 10.1007/978-1-4614-7897-3 Springer New York Heidelberg Dordrecht London Library of Congress Control Number: 2013948919 © Springer Science+Business Media New York 1988, 2014 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, speci fi cally the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on micro fi lms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. Exempted from this legal reservation are brief excerpts in connection with reviews or scholarly analysis or material supplied speci fi cally for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Duplication of this publication or parts thereof is permitted only under the provisions of the Copyright Law of the Publisher’s location, in its current version, and permission for use must always be obtained from Springer. Permissions for use may be obtained through RightsLink at the Copyright Clearance Center. Violations are liable to prosecution under the respective Copyright Law. The use of general descriptive names, registered names, trademarks, service marks, etc. -
A New Approach to Stellar Occultations in the Gaia Era Joao Ferreira
A new approach to stellar occultations in the Gaia era Joao Ferreira To cite this version: Joao Ferreira. A new approach to stellar occultations in the Gaia era. Astrophysics [astro-ph]. Université Côte d’Azur; Universidade de Lisboa. Faculdade de ciências (Lisboa, Portugal), 2020. English. NNT : 2020COAZ4084. tel-03185433 HAL Id: tel-03185433 https://tel.archives-ouvertes.fr/tel-03185433 Submitted on 30 Mar 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THÈSE DE DOCTORAT Occultations stellaires: une nouvelle approche grâce à la mission Gaia João FERREIRA Laboratoire J-L. Lagrange – Observatoire de la Côte d’Azur ; Instituto de Astrofísica e Ciências do Espaço, Lisboa Présentée en vue de l’obtention Devant le jury, composé de : du grade de docteur en Sciences de la Planète Felipe BRAGA-RIBAS (Universidade Tecnológica Federal do et de l’Univers Paraná) d’Université Côte d’Azur René DUFFARD (Instituto de Astrofisica de Andalucía) et de Faculdade de Ciências da Universidade de Guy LIBOUREL (Université Côte d’Azur) Lisboa Pedro MACHADO (Instituto -
The Colors of Cometary Nuclei – Comparison with Other Primitive Bodies of the Solar System and Implications for Their Origin P
The colors of cometary nuclei – Comparison with other primitive bodies of the Solar system and implications for their origin P. Lamy, I. Toth To cite this version: P. Lamy, I. Toth. The colors of cometary nuclei – Comparison with other primitive bodies of the Solar system and implications for their origin. Icarus, Elsevier, 2009, 201 (2), pp.674. 10.1016/j.icarus.2009.01.030. hal-00533506 HAL Id: hal-00533506 https://hal.archives-ouvertes.fr/hal-00533506 Submitted on 7 Nov 2010 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Accepted Manuscript The colors of cometary nuclei – Comparison with other primitive bodies of the Solar system and implications for their origin P. Lamy, I. Toth PII: S0019-1035(09)00065-7 DOI: 10.1016/j.icarus.2009.01.030 Reference: YICAR 8918 To appear in: Icarus Received date: 18 January 2007 Revised date: 12 January 2009 Accepted date: 15 January 2009 Please cite this article as: P. Lamy, I. Toth, The colors of cometary nuclei – Comparison with other primitive bodies of the Solar system and implications for their origin, Icarus (2009), doi: 10.1016/j.icarus.2009.01.030 This is a PDF file of an unedited manuscript that has been accepted for publication.