Open Northeast Passage Record - NGC 40 New Global Warming Energy Source
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Unknown Amorphous Carbon II. LRS SPECTRA the Sample Consists Of
Table I A summary of the spectral -features observed in the LRS spectra of the three groups o-f carbon stars. The de-finition o-f the groups is given in the text. wavelength Xmax identification Group I B - 12 urn E1 9.7 M™ Silicate 12 - 23 jim E IB ^m Silicate Group II < 8.5 M"i A C2H2 CS? 12 - 16 f-i/n A 13.7 - 14 Mm C2H2 HCN? 8 - 10 Mm E 8.6 M"i Unknown 10 - 13 Mm E 11.3 - 11 .7 M«> SiC Group III 10 - 13 MJn E 11.3 - 11 .7 tun SiC B - 23 Htn C Amorphous carbon 1 The letter in this column indicates the nature o-f the -feature: A = absorption; E = emission; C indicates the presence of continuum opacity. II. LRS SPECTRA The sample consists of 304 carbon stars with entries in the LRS catalog (Papers I-III). The LRS spectra have been divided into three groups. Group I consists of nine stars with 9.7 and 18 tun silicate features in their LRS spectra pointing to oxygen-rich dust in the circumstellar shell. These sources are discussed in Paper I. The remaining stars all have spectra with carbon-rich dust features. Using NIR photometry we have shown that in the group II spectra the stellar photosphere is the dominant continuum. The NIR color temperature is of the order of 25OO K. Paper II contains a discussion of sources with this class of spectra. The continuum in the group III spectra is probably due to amorphous carbon dust. -
JOHN R. THORSTENSEN Address
CURRICULUM VITAE: JOHN R. THORSTENSEN Address: Department of Physics and Astronomy Dartmouth College 6127 Wilder Laboratory Hanover, NH 03755-3528; (603)-646-2869 [email protected] Undergraduate Studies: Haverford College, B. A. 1974 Astronomy and Physics double major, High Honors in both. Graduate Studies: Ph. D., 1980, University of California, Berkeley Astronomy Department Dissertation : \Optical Studies of Faint Blue X-ray Stars" Graduate Advisor: Professor C. Stuart Bowyer Employment History: Department of Physics and Astronomy, Dartmouth College: { Professor, July 1991 { present { Associate Professor, July 1986 { July 1991 { Assistant Professor, September 1980 { June 1986 Research Assistant, Space Sciences Lab., U.C. Berkeley, 1975 { 1980. Summer Student, National Radio Astronomy Observatory, 1974. Summer Student, Bartol Research Foundation, 1973. Consultant, IBM Corporation, 1973. (STARMAP program). Honors and Awards: Phi Beta Kappa, 1974. National Science Foundation Graduate Fellow, 1974 { 1977. Dorothea Klumpke Roberts Award of the Berkeley Astronomy Dept., 1978. Professional Societies: American Astronomical Society Astronomical Society of the Pacific International Astronomical Union Lifetime Publication List * \Can Collapsed Stars Close the Universe?" Thorstensen, J. R., and Partridge, R. B. 1975, Ap. J., 200, 527. \Optical Identification of Nova Scuti 1975." Raff, M. I., and Thorstensen, J. 1975, P. A. S. P., 87, 593. \Photometry of Slow X-ray Pulsars II: The 13.9 Minute Period of X Persei." Margon, B., Thorstensen, J., Bowyer, S., Mason, K. O., White, N. E., Sanford, P. W., Parkes, G., Stone, R. P. S., and Bailey, J. 1977, Ap. J., 218, 504. \A Spectrophotometric Survey of the A 0535+26 Field." Margon, B., Thorstensen, J., Nelson, J., Chanan, G., and Bowyer, S. -
Intra‐Annual Variability in Responses of a Canopy Forming Kelp to Cumulative Low Tide Heat Stress
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/336155330 Intra-Annual Variability in Responses of a Canopy Forming Kelp to Cumulative Low Tide Heat Stress: Implications for Populations at the Trailing Range Edge Article in Journal of Phycology · September 2019 DOI: 10.1111/jpy.12927 CITATIONS READS 5 210 3 authors: Hannah F. R. Hereward Nathan G King Cardiff University Bangor University 5 PUBLICATIONS 23 CITATIONS 15 PUBLICATIONS 179 CITATIONS SEE PROFILE SEE PROFILE Dan A Smale Marine Biological Association of the UK 123 PUBLICATIONS 7,729 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Examining the ecological consequences of climatedriven shifts in the structure of NE Atlantic kelp forests View project All content following this page was uploaded by Nathan G King on 06 January 2020. The user has requested enhancement of the downloaded file. J. Phycol. *, ***–*** (2019) © 2019 Phycological Society of America DOI: 10.1111/jpy.12927 INTRA-ANNUAL VARIABILITY IN RESPONSES OF A CANOPY FORMING KELP TO CUMULATIVE LOW TIDE HEAT STRESS: IMPLICATIONS FOR POPULATIONS AT THE TRAILING RANGE EDGE1 Hannah F. R. Hereward Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK Nathan G. King School of Ocean Sciences, Bangor University, Menai Bridge LL59 5AB, UK and Dan A. Smale2 Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth PL1 2PB, UK Anthropogenic climate change is driving the Key index words: climate change; Kelp forests; Ocean redistribution of species at a global scale. -
September 2020 BRAS Newsletter
A Neowise Comet 2020, photo by Ralf Rohner of Skypointer Photography Monthly Meeting September 14th at 7:00 PM, via Jitsi (Monthly meetings are on 2nd Mondays at Highland Road Park Observatory, temporarily during quarantine at meet.jit.si/BRASMeets). GUEST SPEAKER: NASA Michoud Assembly Facility Director, Robert Champion What's In This Issue? President’s Message Secretary's Summary Business Meeting Minutes Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night Member’s Corner –My Quest For A Dark Place, by Chris Carlton Astro-Photos by BRAS Members Messages from the HRPO REMOTE DISCUSSION Solar Viewing Plus Night Mercurian Elongation Spooky Sensation Great Martian Opposition Observing Notes: Aquila – The Eagle Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society Baton Rouge Astronomical Society Newsletter, Night Visions Page 2 of 27 September 2020 President’s Message Welcome to September. You may have noticed that this newsletter is showing up a little bit later than usual, and it’s for good reason: release of the newsletter will now happen after the monthly business meeting so that we can have a chance to keep everybody up to date on the latest information. Sometimes, this will mean the newsletter shows up a couple of days late. But, the upshot is that you’ll now be able to see what we discussed at the recent business meeting and have time to digest it before our general meeting in case you want to give some feedback. Now that we’re on the new format, business meetings (and the oft neglected Light Pollution Committee Meeting), are going to start being open to all members of the club again by simply joining up in the respective chat rooms the Wednesday before the first Monday of the month—which I encourage people to do, especially if you have some ideas you want to see the club put into action. -
Planting 2.0 Time Friday Afternoon
Search for The Westfield News Westfield350.comTheThe Westfield WestfieldNews News Serving Westfield, Southwick, and surrounding Hilltowns “TIME IS THE ONLY WEATHER CRITIC WITHOUT TONIGHT AMBITION.” Partly Cloudy. JOHN STEINBECK Low of 55. www.thewestfieldnews.com VOL. 86 NO. 151 TUESDAY, JUNE 27, 2017 75 cents $1.00 SATURDAY, JULY 25, 2020 VOL. 89 NO. 178 High-speed New Westfield internet could be coming COVID to Southwick By HOPE E. TREMBLAY cases drop Editor By PETER CURRIER SOUTHWICK – The High- Staff Writer Speed Internet Subcommittee WESTFIELD- The rate of coronavirus spread in reported its findings July 21 to the Westfield continues to slow down after a couple of weeks Southwick Select Board. of slightly elevated growth. The group formed in 2019 to The city recorded just five new cases of COVID-19 in research the town’s options regard- the past week, bringing the total number of confirmed ing internet service after being cases to 482 as of Friday afternoon. This is the lowest approached by Whip City Fiber, weekly number of new cases in more than a month in part of Westfield Gas & Electric, Westfield. Health Director Joseph Rouse said that there are on bringing the service to a new eight active cases in the city. development on College Highway. Fifty-five Westfield residents have died due to COVID- Select Board Chairman Douglas 19 since the beginning of the pandemic. Moglin, who served on the sub- The Town of Southwick had not released its weekly committee, said right now the only report on the number of new COVID-19 cases as of press real choice is Comcast/Xfinity. -
The Effect of Forced Change and Unforced Variability in Heat Waves, Temperature Extremes, and Associated Population Risk in a CO2-Warmed World
Atmos. Chem. Phys., 21, 11889–11904, 2021 https://doi.org/10.5194/acp-21-11889-2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. The effect of forced change and unforced variability in heat waves, temperature extremes, and associated population risk in a CO2-warmed world Jangho Lee, Jeffrey C. Mast, and Andrew E. Dessler Department of Atmospheric Sciences, Texas A & M University, College Station, TX, USA Correspondence: Andrew Dessler ([email protected]) Received: 4 February 2021 – Discussion started: 22 February 2021 Revised: 30 June 2021 – Accepted: 9 July 2021 – Published: 10 August 2021 Abstract. This study investigates the impact of global warm- – The increases in heat wave indices are significant between ing on heat and humidity extremes by analyzing 6 h output 1.5 and 2.0 ◦C of warming, and the risk of facing extreme heat from 28 members of the Max Planck Institute Grand Ensem- events is higher in low GDP regions. −1 ble driven by forcing from a 1 % yr CO2 increase. We find that unforced variability drives large changes in regional ex- posure to extremes in different ensemble members, and these 1 Introduction variations are mostly associated with El Niño–Southern Os- cillation (ENSO) variability. However, while the unforced The long-term goal of the 2015 Paris Agreement is to keep variability in the climate can alter the occurrence of extremes the increase in global temperature well below 2 ◦C above regionally, variability within the ensemble decreases signifi- preindustrial levels, while pursuing efforts and limiting the cantly as one looks at larger regions or at a global population warming to 1.5 ◦C. -
Ludwig Neidhart
© Dr. Ludwig Neidhart, 1998, 2007 „Als die Zeit erfüllt war ...“ Ein Diskussionsbeitrag zu Grundproblemen der biblischen Weihnachtgeschichte und der Datierung der Geburt Christi von Ludwig Neidhart (überarbeitete Version, Stand 07.04.2019) Erstmals erschienen in: Brücke zum Menschen Nr. 133, 1. Quartal 1998 Leicht überarbeitete Version in: Pro Sancta Ecclesia Nr. 21, 2007, S. 20–110 Auszug mit dem Titel ‚Die Magier und der Stern’ in: Dörthe Emig-Herchen (Hg.), Silberglanz in stillen Gassen. Weihnachts-Anthologie 2007, Frankfurt a.M., 2007, S. 221–246 Inhaltsverzeichnis 1. Wie kam man auf den 25. Dezember?...................................................................................................2 2. Wie alt ist das Geburtsfest Christi am 25. Dezember?........................................................................3 3. Frühchristliche Traditionen über den Geburtstag Jesu......................................................................4 4. Kann Christus im Dezember geboren sein?.........................................................................................7 5. Biblische Chronologie des Lebens Christi............................................................................................8 5.1. Die Dauer des öffentlichen Wirkens Jesu......................................................................................8 5.2. Jesus starb am 7. April des Jahres 30.............................................................................................9 5.3. Exkurs über die Stunde der Kreuzigung.....................................................................................13 -
Climate Risk and Response: Physical Hazards and Socioeconomic Impacts: Executive Summary
Climate risk and response: Physical hazards and socioeconomic and impacts hazards Physical response: and risk Climate Executive summary Climate risk and response Physical hazards and socioeconomic impacts January 2020 McKinsey Global Institute Since its founding in 1990, the McKinsey innovation, and urbanization. Recent partners and industry and management Global Institute (MGI) has sought to reports have assessed the digital experts. The MGI Council is made develop a deeper understanding of the economy, the impact of AI and automation up of leaders from McKinsey offices evolving global economy. As the business on employment, income inequality, around the world and the firm’s sector and economics research arm of McKinsey the productivity puzzle, the economic practices and includes Michael Birshan, & Company, MGI aims to provide leaders benefits of tackling gender inequality, Andrés Cadena, Sandrine Devillard, in the commercial, public, and social a new era of global competition, André Dua, Kweilin Ellingrud, sectors with the facts and insights Chinese innovation, and digital and Tarek Elmasry, Katy George, Rajat Gupta, on which to base management and financial globalization. Eric Hazan, Acha Leke, Gary Pinkus, policy decisions. Oliver Tonby, and Eckart Windhagen. MGI is led by three McKinsey & Company The Council members help shape the MGI research combines the disciplines of senior partners: James Manyika, research agenda, lead high-impact economics and management, employing Sven Smit, and Jonathan Woetzel. research and share the findings with the analytical tools of economics with James and Sven also serve as co-chairs decision makers around the world. In the insights of business leaders. Our of MGI. Michael Chui, Susan Lund, addition, leading economists, including “micro-to-macro” methodology examines Anu Madgavkar, Jan Mischke, Nobel laureates, advise MGI research. -
Human Contribution to the Record-Breaking June and July 2019 Heatwaves in Western Europe
Environ. Res. Lett. 15 (2020) 094077 https://doi.org/10.1088/1748-9326/aba3d4 Environmental Research Letters LETTER Human contribution to the record-breaking June and July 2019 OPEN ACCESS heatwaves in Western Europe RECEIVED 31 December 2019 Robert Vautard1, Maarten van Aalst2, Olivier Boucher1, Agathe Drouin3, Karsten Haustein4, 5 6 4 3 3 REVISED Frank Kreienkamp , Geert Jan van Oldenborgh , Friederike E L Otto , Aur´elien Ribes , Yoann Robin , 18 June 2020 Michel Schneider3, Jean-Michel Soubeyroux3, Peter Stott7, Sonia I Seneviratne8, Martha M Vogel8 ACCEPTED FOR PUBLICATION 9 8 July 2020 and Michael Wehner 1 PUBLISHED Institut Pierre-Simon Laplace, Paris, France 28 August 2020 2 University of Twente and Red Cross Red Crescent Climate Centre, The Netherlands 3 M´et´eo-France, Toulouse, France 4 Original content from Environmental Change Institute, University of Oxford, Oxford, United Kingdom 5 this work may be used Deutsche Wetterdienst, Offenbach, Germany under the terms of the 6 KNMI, de Bilt, The Netherlands Creative Commons 7 U.K. Met. Office, Exeter, United Kingdom Attribution 4.0 licence. 8 ETH Zürich, Zürich, Switzerland Any further distribution 9 Lawrence Berkeley National Laboratory, Berkeley, United States of America of this work must maintain attribution to E-mail: [email protected] the author(s) and the title of the work, journal Keywords: climate change, heat wave, extreme event attribution citation and DOI. Supplementary material for this article is available online Abstract Two extreme heatwaves hit Western Europe in the summer of 2019, with historical records broken by more than a degree in many locations, and significant societal impacts, including excess mortality of several thousand people. -
Stars and Their Spectra: an Introduction to the Spectral Sequence Second Edition James B
Cambridge University Press 978-0-521-89954-3 - Stars and Their Spectra: An Introduction to the Spectral Sequence Second Edition James B. Kaler Index More information Star index Stars are arranged by the Latin genitive of their constellation of residence, with other star names interspersed alphabetically. Within a constellation, Bayer Greek letters are given first, followed by Roman letters, Flamsteed numbers, variable stars arranged in traditional order (see Section 1.11), and then other names that take on genitive form. Stellar spectra are indicated by an asterisk. The best-known proper names have priority over their Greek-letter names. Spectra of the Sun and of nebulae are included as well. Abell 21 nucleus, see a Aurigae, see Capella Abell 78 nucleus, 327* ε Aurigae, 178, 186 Achernar, 9, 243, 264, 274 z Aurigae, 177, 186 Acrux, see Alpha Crucis Z Aurigae, 186, 269* Adhara, see Epsilon Canis Majoris AB Aurigae, 255 Albireo, 26 Alcor, 26, 177, 241, 243, 272* Barnard’s Star, 129–130, 131 Aldebaran, 9, 27, 80*, 163, 165 Betelgeuse, 2, 9, 16, 18, 20, 73, 74*, 79, Algol, 20, 26, 176–177, 271*, 333, 366 80*, 88, 104–105, 106*, 110*, 113, Altair, 9, 236, 241, 250 115, 118, 122, 187, 216, 264 a Andromedae, 273, 273* image of, 114 b Andromedae, 164 BDþ284211, 285* g Andromedae, 26 Bl 253* u Andromedae A, 218* a Boo¨tis, see Arcturus u Andromedae B, 109* g Boo¨tis, 243 Z Andromedae, 337 Z Boo¨tis, 185 Antares, 10, 73, 104–105, 113, 115, 118, l Boo¨tis, 254, 280, 314 122, 174* s Boo¨tis, 218* 53 Aquarii A, 195 53 Aquarii B, 195 T Camelopardalis, -
Publications of the Astronomical Society of the Pacific Vol. 106 1994 March No. 697 Publications of the Astronomical Society Of
Publications of the Astronomical Society of the Pacific Vol. 106 1994 March No. 697 Publications of the Astronomical Society of the Pacific 106: 209-238, 1994 March Invited Review Paper The DQ Herculis Stars Joseph Patterson Department of Astronomy, Columbia University, 538 West 120th Street, New York, New York 10027 Electronic mail: [email protected] Received 1993 September 2; accepted 1993 December 9 ABSTRACT. We review the properties of the DQ Herculis stars: cataclysmic variables containing an accreting, magnetic, rapidly rotating white dwarf. These stars are characterized by strong X-ray emission, high-excitation spectra, and very stable optical and X-ray pulsations in their light curves. There is considerable resemblance to their more famous cousins, the AM Herculis stars, but the latter class is additionally characterized by spin-orbit synchronism and the presence of strong circular polarization. We list eighteen stars passing muster as certain or very likely DQ Her stars. The rotational periods range from 33 s to 2.0 hr. Additional periods can result when the rotating searchlight illuminates other structures in the binary. A single hypothesis explains most of the observed properties: magnetically channeled accretion within a truncated disk. Some accretion flow still seems to proceed directly to the magnetosphere, however. The white dwarfs' magnetic moments are in the range 1032-1034 G cm3, slightly weaker than in AM Her stars but with some probable overlap. The more important reason why DQ Hers have broken synchronism is probably their greater accretion rate and orbital separation. The observed Lx/L v values are surprisingly low for a radially accreting white dwarf, suggesting that most of the accretion energy is not radiated in a strong shock above the magnetic pole. -
Episodic Absorption in the Outflow of the Old Nova V603 Aquilae
Mon. Not. R. Astron. Soc. 318, 368±374 (2000) Episodic absorption in the outflow of the old nova V603 Aquilae Raman K. Prinja,1w Christian Knigge,2² F. A. Ringwald3³ and Richard A. Wade4 1Department of Physics and Astronomy, University College London, Gower St, London WC1E 6BT 2Department of Astronomy, Columbia University, 555 West 120th Street, New York, NY 10027, USA 3Department of Physics and Space Sciences, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901-6988, USA 4Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802-6305, USA Accepted 2000 May 12. Received 2000 April 19; in original form 2000 February 17 ABSTRACT We report on the time-dependent behaviour of ultraviolet spectral lines in Hubble Space Telescope Goddard High-Resolution Spectrograph data of the classical nova V603 Aql. In particular, episodic blueshifted absorption (extending to ,22500 km s21) is present, with a variability time-scale down to ,1 min. The data provide a rare opportunity to study the rapid evolution of absorption structures that may be associated with accretion-disc winds in cataclysmic variables. At least three absorption events are recorded (at blueward velocities only) over ,5 h, each lasting ,10±15 min. The derived velocity, acceleration and optical depth properties provide an empirical picture of stochastically variable structures in the outflow, with no evidence for short-term (less than ,1 h) cyclic or modulated behaviour in the overall absorption properties. In contrast, the emission components of the ultraviolet resonance lines are very stable in velocity and strength in this low-inclination system.