TRIBULATION- 1St, 2Nd & 3Rd Seals
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
C a L E N D a R F O R 2019
Small Astronomy Calendar for Amateur Astronomers Year III 2021 Let’s welcome our 2021 Small Astronomy Calendar Edition made by our Intergalactic Astronomy Educators Fellowship (IGAEF)’s team. In 2021, many amateur astronomers asked for calculations for more specific geographical locations. This year we added new useful calculated positions and coordinates for everyone in the world to use. You should check this calendar every month, specifically the lunar occultations pages for your observation point. There are many interesting and unique events that might not happen every year, because of the different parameters of the Moon orbit. Our hope is to fulfill your expectations. We would like to receive suggestions and feedback. You can find the editor’s email in the last page of the calendar. We appreciate your support and we are looking forward to having a good observational year, and a better and more complete calendar for this first year of a new decade. Index 3 - Calendar for 2021 4 – What is the Intergalactic Astronomy Educators Fellowship (IGAEF) 5 - Time Zones and Universal Time 6 - Phases of the Moon 2021 7 – Physical Ephemeris for the Moon 2021 10 - Local Time (EST) of MOONRISE 2021 11 - Local Time (EST) of MOONSET 2021 12 - Local time (EST) of planets rise and set 2021 15 - Diary of Astronomical Phenomena 2021 21 - Lunar eclipses 23 - Solar Eclipses 25 - Meteor Showers for 2021 26 – 2021 UPCOMING COMETS 27 - Satellites of Jupiter 2021 36 – Mutual Events of Jupiter Satellites 2021 39 - Julian Day Number, Apparent Sidereal Time, Obliquity -
THE STAR FORMATION NEWSLETTER an Electronic Publication Dedicated to Early Stellar Evolution and Molecular Clouds
THE STAR FORMATION NEWSLETTER An electronic publication dedicated to early stellar evolution and molecular clouds No. 193 — 13 Jan 2009 Editor: Bo Reipurth ([email protected]) Abstracts of recently accepted papers [O i] sub-arcsecond study of a microjet from an intermediate mass young star: RY Tau V. Agra-Amboage1, C. Dougados1, S. Cabrit2, P.J.V. Garcia3,4,1 and P. Ferruit5 1 Laboratoire d’Astrophysique de l’Observatoire de Grenoble, UMR 5521 du CNRS, 38041 Grenoble C´edex 9, France 2 LERMA, Observatoire de Paris, UMR 8112 du CNRS, 61 Avenue de l’Observatoire, 75014 Paris, France 3 Departamento de Engenharia Fisica,Faculdade de Engenharia,Universidade do Porto, 4200-465 Porto, Portugal 4 Centro de Astrofisica, Universidade do Porto, Porto, Portugal 5 CRAL, Observatoire de Lyon, 9 Av. Charles Andr´e, F-69230 St. Genis Laval, France E-mail contact: Catherine.Dougados at obs.ujf-grenoble.fr High-resolution studies of microjets in T Tauri stars (cTTs) reveal key information on the jet collimation and launching mechanism, but only a handful of systems have been mapped so far. We perform a detailed study of the microjet from the 2 M⊙ young star RY Tau, to investigate the influence of its higher stellar mass and claimed close binarity on jet properties. Spectro-imaging observations of RY Tau were obtained in [O i]λ6300 with resolutions of 0.4′′ and 135 km s−1, using the integral field spectrograph OASIS at the Canada-France-Hawaii Telescope. Deconvolved images reach a resolution of 0.2′′. The blueshifted jet is detected within 2′′ of the central star. -
GEORGE HERBIG and Early Stellar Evolution
GEORGE HERBIG and Early Stellar Evolution Bo Reipurth Institute for Astronomy Special Publications No. 1 George Herbig in 1960 —————————————————————– GEORGE HERBIG and Early Stellar Evolution —————————————————————– Bo Reipurth Institute for Astronomy University of Hawaii at Manoa 640 North Aohoku Place Hilo, HI 96720 USA . Dedicated to Hannelore Herbig c 2016 by Bo Reipurth Version 1.0 – April 19, 2016 Cover Image: The HH 24 complex in the Lynds 1630 cloud in Orion was discov- ered by Herbig and Kuhi in 1963. This near-infrared HST image shows several collimated Herbig-Haro jets emanating from an embedded multiple system of T Tauri stars. Courtesy Space Telescope Science Institute. This book can be referenced as follows: Reipurth, B. 2016, http://ifa.hawaii.edu/SP1 i FOREWORD I first learned about George Herbig’s work when I was a teenager. I grew up in Denmark in the 1950s, a time when Europe was healing the wounds after the ravages of the Second World War. Already at the age of 7 I had fallen in love with astronomy, but information was very hard to come by in those days, so I scraped together what I could, mainly relying on the local library. At some point I was introduced to the magazine Sky and Telescope, and soon invested my pocket money in a subscription. Every month I would sit at our dining room table with a dictionary and work my way through the latest issue. In one issue I read about Herbig-Haro objects, and I was completely mesmerized that these objects could be signposts of the formation of stars, and I dreamt about some day being able to contribute to this field of study. -
Fuor and Exor Variables: a NIR High-Resolution Spectroscopic Survey Joseph Liskowsky Clemson University, [email protected]
Clemson University TigerPrints All Theses Theses 12-2010 FUor and EXor Variables: A NIR High-Resolution Spectroscopic Survey Joseph Liskowsky Clemson University, [email protected] Follow this and additional works at: https://tigerprints.clemson.edu/all_theses Part of the Astrophysics and Astronomy Commons Recommended Citation Liskowsky, Joseph, "FUor and EXor Variables: A NIR High-Resolution Spectroscopic Survey" (2010). All Theses. 977. https://tigerprints.clemson.edu/all_theses/977 This Thesis is brought to you for free and open access by the Theses at TigerPrints. It has been accepted for inclusion in All Theses by an authorized administrator of TigerPrints. For more information, please contact [email protected]. FUor and EXor Variables, a NIR High-Resolution Spectroscopic Survey A Thesis Presented to the Graduate School of Clemson University In Partial Fulfillment of the Requirements for the Degree Master of Science Physics and Astronomy by Joseph Paul Liskowsky Dec 2010 Accepted by: Dr. Sean Brittain, Committee Chair Dr. Dieter Hartmann Dr. Mark Leising Dr. Bradley Meyer Abstract To better understand the labyrinth of heating and cooling processes in YSOs (young stellar objects), we study systems where there exists a large variability in the heating of this gas due to accretion. This research project focuses on several classes of early young eruptable T-Tauri stars, namely the FUors, the EXors and the so-called FU Ori-like, which all have the property of large amplitude oscillations in accretion rate. Each of these categories may well represent specific stages in early low-mass stellar evolution. While these objects have specific spectroscopic and circumstellar diagnostics (as means of identification) our research suggests that there are at least several objects that defy (typical) classification. -
Propiedades F´Isicas De Estrellas Con Exoplanetas Y Anillos Circunestelares Por Carlos Saffe
Propiedades F´ısicas de Estrellas con Exoplanetas y Anillos Circunestelares por Carlos Saffe Presentado ante la Facultad de Matem´atica, Astronom´ıa y F´ısica como parte de los requerimientos para la obtenci´on del grado de Doctor en Astronom´ıa de la UNIVERSIDAD NACIONAL DE CORDOBA´ Marzo de 2008 c FaMAF - UNC 2008 Directora: Dr. Mercedes G´omez A Mariel, a Juancito y a Ramoncito. Resumen En este trabajo, estudiamos diferentes aspectos de las estrellas con exoplanetas (EH, \Exoplanet Host stars") y de las estrellas de tipo Vega, a fin de comparar ambos gru- pos y analizar la posible diferenciaci´on con respecto a otras estrellas de la vecindad solar. Inicialmente, compilamos la fotometr´ıa optica´ e infrarroja (IR) de un grupo de 61 estrellas con exoplanetas detectados por la t´ecnica Doppler, y construimos las dis- tribuciones espectrales de energ´ıa de estos objetos. Utilizamos varias cantidades para analizar la existencia de excesos IR de emisi´on, con respecto a los niveles fotosf´ericos normales. En particular, el criterio de Mannings & Barlow (1998) es verificado por 19-23 % (6-7 de 31) de las estrellas EH con clase de luminosidad V, y por 20 % (6 de 30) de las estrellas EH evolucionadas. Esta emisi´on se supone que es producida por la presencia de polvo en discos circunestelares. Sin embargo, en vista de la pobre resoluci´on espacial y problemas de confusi´on de IRAS, se requiere mayor resoluci´on y sensibilidad para confirmar la naturaleza circunestelar de las emisiones detectadas. Tambi´en comparamos las propiedades de polarizaci´on. -
A. Meredith Hughes Curriculum Vitae – May 29, 2019 Van Vleck Observatory [email protected] 96 Foss Hill Dr
A. Meredith Hughes Curriculum Vitae – May 29, 2019 Van Vleck Observatory [email protected] 96 Foss Hill Dr. http://amhughes.web.wesleyan.edu/ Middletown, CT 06459 Phone: (860) 685-3667 Office: VVO109 EDUCATION Harvard University, Cambridge, Massachusetts Ph.D., Astronomy (Advisor: Dr. David Wilner) May 2010 Thesis title: Circumstellar Disk Structure through Resolved Submillimeter Observations Yale University, New Haven, Connecticut B.S., Astronomy and Physics (with distinction), summa cum laude 2005 PROFESSIONAL EXPERIENCE Associate Professor, Wesleyan University Department of Astronomy 2019-present Assistant Professor, Wesleyan University Department of Astronomy 2013-2019 Miller Fellow, UC Berkeley Department of Astronomy 2010-2012 Graduate Student Researcher, Harvard University Department of Astronomy 2005-2010 RESEARCH INTERESTS Planet formation. Circumstellar disk structure and dynamics: gas and dust. Disk evolution: viscous transport and clearing processes. Radio astronomy. Aperture synthesis techniques. HONORS AND AWARDS Cottrell Scholar, Research Corporation for Science Advancement (for outstanding teacher-scholars) 2018 Bok Prize, Harvard University Dept of Astronomy (research excellence by PhD graduate under age 35) 2015 Miller Fellowship, Miller Institute for Basic Research in Science, UC Berkeley 2010-2012 Fireman Fellowship, Harvard University Dept of Astronomy (outstanding PhD thesis) 2010 National Science Foundation Graduate Research Fellowship 2007-2010 Certificate of Distinction in Teaching, Derek Bok Center at Harvard University 2009 George Beckwith Prize in Astronomy, Yale University 2005 Phi Beta Kappa, Yale University (top 1% of Junior class) 2003 TEACHING & ADVISING Postdoctoral Collaborators Supervised Kevin Flaherty, 2013-2018 à Williams College Lecturer and Observatory Supervisor MA Theses Supervised 2013-present 6. Jonas Powell ’19 à Systems & Technology Research, Woburn, MA Exploring the Role of Environment in the Composition of ONC Proplyds. -
Instruction Manual
iOptron® GEM28 German Equatorial Mount Instruction Manual Product GEM28 and GEM28EC Read the included Quick Setup Guide (QSG) BEFORE taking the mount out of the case! This product is a precision instrument and uses a magnetic gear meshing mechanism. Please read the included QSG before assembling the mount. Please read the entire Instruction Manual before operating the mount. You must hold the mount firmly when disengaging or adjusting the gear switches. Otherwise personal injury and/or equipment damage may occur. Any worm system damage due to improper gear meshing/slippage will not be covered by iOptron’s limited warranty. If you have any questions please contact us at [email protected] WARNING! NEVER USE A TELESCOPE TO LOOK AT THE SUN WITHOUT A PROPER FILTER! Looking at or near the Sun will cause instant and irreversible damage to your eye. Children should always have adult supervision while observing. 2 Table of Content Table of Content ................................................................................................................................................. 3 1. GEM28 Overview .......................................................................................................................................... 5 2. GEM28 Terms ................................................................................................................................................ 6 2.1. Parts List ................................................................................................................................................. -
NCRAL Northern Lights Winter 2021
who have earned pins and certificates galore. Nothing seems INSIDE THIS ISSUE OF Northern Lights to keep these intrepid observers down. Would that all other astronomy clubs had such active members when it comes to NCRAL Chair’s Message…..............................……………………1 observing! (Perhaps there are, but they aren’t telling!) NCRAL Financial Statement Autumn 2020………………….……2 Looking Ahead to 2021 NCRAL 2021 May 7-8……………………..………………………..………2 Call for 2021 NCRAL Nominations & Applications……….......3 NCRAL 2021 is scheduled for Friday/Saturday, May 7-8, NCRAL Seasonal Messier Marathon Awards…………….………5 and I’m looking forward to it. I hope you are too. The Noteworthy!……………………………………………………………………6 convention will be hosted by the Neville Public Museum Profiles in Amateur Astronomy: Alan Sheidler (PAC)…..……7 Astronomical Society in De Pere, Wisconsin, just south of Club Leadership for Our Time by Carl J. Wenning………...……8 Green Bay assuming the pandemic doesn’t interfere as it did Radio Astronomy by Tim Stone…………………………….……..…10 last spring. I’m already making plans to attend NCRAL 2021 2021 Rising and Setting Charts by Jeffrey L. Hunt……….….14 and hope you are doing the same. Later in this newsletter Astronomical League 75th Anniversary Coming……..…….…17 you’ll find information about speakers, activities, and Mars 2021: Until Conjunction by Jeffrey L. Hunt.………..….18 facilities. Get this event into your calendar now so you can Future NCRAL Conventions…………………………………..……….22 avoid a schedule conflict. Seasonal Messier Mini Marathon Observing Program……22 Don’t forget to think about nominations for Regional Add Your Email Address to NCRAL Member Database…...23 officers. This year we need to elect Chair and Vice Chair to NCRAL Website………………………………………………………….….23 two-year terms and vote for a Secretary-Treasurer to Regional Officer & Leader Contact Information………..……24 complete the second year of a two-year term that began in May 2020. -
Extrasolar Planets and Their Host Stars
Kaspar von Braun & Tabetha S. Boyajian Extrasolar Planets and Their Host Stars July 25, 2017 arXiv:1707.07405v1 [astro-ph.EP] 24 Jul 2017 Springer Preface In astronomy or indeed any collaborative environment, it pays to figure out with whom one can work well. From existing projects or simply conversations, research ideas appear, are developed, take shape, sometimes take a detour into some un- expected directions, often need to be refocused, are sometimes divided up and/or distributed among collaborators, and are (hopefully) published. After a number of these cycles repeat, something bigger may be born, all of which one then tries to simultaneously fit into one’s head for what feels like a challenging amount of time. That was certainly the case a long time ago when writing a PhD dissertation. Since then, there have been postdoctoral fellowships and appointments, permanent and adjunct positions, and former, current, and future collaborators. And yet, con- versations spawn research ideas, which take many different turns and may divide up into a multitude of approaches or related or perhaps unrelated subjects. Again, one had better figure out with whom one likes to work. And again, in the process of writing this Brief, one needs create something bigger by focusing the relevant pieces of work into one (hopefully) coherent manuscript. It is an honor, a privi- lege, an amazing experience, and simply a lot of fun to be and have been working with all the people who have had an influence on our work and thereby on this book. To quote the late and great Jim Croce: ”If you dig it, do it. -
19900018246.Pdf
m II II -- -'ZR__ -_'-"-"-"-"-"_--Z__ _. 17£ -- -. -- 'r ' --_ZI__Z _ --_ _%H, _ " - Z r _ m m-- _ .... •_ ;/_x_ _ _-- .... .IZ • __ L NASA Conference Publication 3061 Carbon in the Galaxy: Studies From Earth and Space Edited by Jill C. Tarter SETI Institute Mountain View, California Sherwood Chang Ames Research Center Moffett Field, California Doug J. DeFrees Molecular Research Institute Palo Alto, California Invited papers from a meeting sponsored by the Life Science Division, National Aeronautics and Space Administration, Washington, D.C., and held at Ames Research Center Moffett Field, California November 5-6, 1987 IW_A National Aeronautics and Space Administration Office of Management Scientific and Technical Information Division 1990 TABLE OF CONTENTS Page PROLOGUE ........................................................................................................................................ vii ACKNOWLEDGMENTS .................................................................................................................. xiii MEETING PARTICIPANTS .............................................................................................................. xv STUDIES OF CARBON IN PRIMITIVE BODIES Carbon in Primitive Meteorites ....................................................................................................... 3 John F. Kerridge Carbon in Comet Dust .................................................................................................................... 21 D. E. Brownlee Carbon-rich Particles -
The Observer of the Twin City Amateur Astronomers
THE OBSERVER OF THE TWIN CITY AMATEUR ASTRONOMERS Volume 46, Number 3 March 2021 INSIDE THIS ISSUE: LAST WORDS AS EDITOR – CARL J. WENNING 1 Last Words as Editor – Carl J. Wenning It has been a pleasure to have 2 President’s Note served as your editor beginning 3 Calendar of Astronomical Events – March 2021 with the January 2014 edition of 3 New & Renewing Members/Dues Blues/E-Mail List The OBSERVER. Since that time, I 4 This Month’s Phases of the Moon have worked to produce 87 issues 4 This Month’s Solar Phenomena that included some 2,100 pages, 4 TCAA Celebrates 61 Years with Annual Meeting about 1,200,000 words, and a myriad of images. Not all the 5 NCRAL 2021 Cancelled words and few of the images were 6 AstroBits – News from Around the TCAA mine; there have been many other 8 TCAA Monthly Online Meeting for March contributors over the years. I 8 History of the TCAA (2010-2019): Part 1 hesitate to mention any names for 9 Spring Mood fear of missing someone. You know their names and have seen the 10 March 2021 with Jeffrey L. Hunt results of their efforts. I thank every one of you who has taken the 20 Public Viewing Sessions for 2021 time and energy necessary to write an article, submit an AstroBit, 21 TCAA Image Gallery or share an image for the benefit of the membership. 21 Did You Know? It is often said that editorship is a thankless task. In the main, 21 TCAA Treasurer’s Report as of February 26, 2021 that’s true – but not always. -
254 — 13 February 2014 Editor: Bo Reipurth ([email protected]) List of Contents
THE STAR FORMATION NEWSLETTER An electronic publication dedicated to early stellar/planetary evolution and molecular clouds No. 254 — 13 February 2014 Editor: Bo Reipurth ([email protected]) List of Contents The Star Formation Newsletter Interview ...................................... 3 My Favorite Object ............................ 5 Editor: Bo Reipurth [email protected] Perspective ................................... 10 Technical Editor: Eli Bressert Abstracts of Newly Accepted Papers .......... 13 [email protected] Abstracts of Newly Accepted Major Reviews . 54 Technical Assistant: Hsi-Wei Yen Dissertation Abstracts ........................ 60 [email protected] New Jobs ..................................... 61 Editorial Board Meetings ..................................... 63 Summary of Upcoming Meetings ............. 66 Joao Alves Alan Boss Short Announcements ........................ 67 Jerome Bouvier New Books ................................... 68 Lee Hartmann Thomas Henning Paul Ho Jes Jorgensen Charles J. Lada Cover Picture Thijs Kouwenhoven Michael R. Meyer This image shows the blueshifted outflow cav- Ralph Pudritz ity from the embedded quadruple Class I source Luis Felipe Rodr´ıguez L1551 IRS5 based on Hα and [SII] images obtained Ewine van Dishoeck with the Subaru telescope images. Two short jets, Hans Zinnecker HH 154, are seen to emerge from the source region to the upper left. The outflow cavity has burst The Star Formation Newsletter is a vehicle for through the front of the cloud, exposing the rich fast distribution of information of interest for as- and complex Herbig-Haro shock structures within. tronomers working on star and planet formation A few faint knots from the HH 30 jet (outside the and molecular clouds. You can submit material field) are visible at the top of the image. The for the following sections: Abstracts of recently field is about 7×8 arcmin, corresponding to about accepted papers (only for papers sent to refereed 0.30×0.35 pc at the assumed distance of 150 pc.