DOCSLIB.ORG

Exoplanets, Extremophiles and Habitability

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Exoplanets, Extremophiles and Habitability EXOPLANETS, EXTREMOPHILES AND HABITABILITY Eduardo Janot Pacheco, Luander Bernardes Institute of Astronomy, Geophysics and Atmospheric Sciences, Department of Astronomy, University of São Paulo, BRAZIL and Claudia Lage Institute of Biophysics Carlos Chagas Filho, Rio de Janeiro Federal University, BRAZIL FSLife Gainesville, April 3-6 1 PURPOSE OF THE WORK: ESTIMATE OF Average Surface Temperature CO2 Partial Atmospheric Pressure pCO2 as a free parameter, For exoplanets in the Habitable Zone (HZ) For hypothetical moons of gaseous giants known to be in the HZ EXOPLANETS + TERRESTRIAL ATMOSPHERE FSLife Gainesville, April 3-6 2 GREENHOUSE EFFECT (data base: J. Schneider’s http://exoplanet.eu/) INPUT: The Extrasolar Planet Encyclopedia Williams (1997) atmospheric model for the Earth (geodynamic conditions, Si-Ca cycle, albedo...) Exomoons of gaseous giants in the HZ with an atmosphere, dynamic stability, geodynamic activity... RESULTS: 1) more precise determination of HZ 2) New concept: the EXTREMOPHILIC ZONE: FSLife Gainesville, April 3-6 3 EZ Energy Budget Equation of the atmospheric model: where L(t) is the stellar luminosity, d the exoplanet orbit size, A the atmospheric albedo, which is a fonction of the surface albedo as surface temperature Ts , stellar azimutal µ angle , CO2 partial pressure p and F the IR flux leaving the planet. FSLife Gainesville, April 3-6 4 Basic Equations for the exomoons model: 1) Stable orbital radii (Domingos et al., 2006): for prograde orbits and for retrograde orbits. RH is the exoplanet Hill radius. FSLife Gainesville, April 3-6 5 Basic Equations for the exomoons model (cont.): Maximum exomoon mass (Murray & Dermott, 2000; Barnes et al. 2009): Where f, Qp and k2p are parameters adjusted empirically, T is the time scale for the moon orbital decay and a, M and R are the orbital semi-major axis, masses and radius of the planet and moon. FSLife Gainesville, April 3-6 6 EXTREMOPHILES: life under extreme conditions FSLife Gainesville, April 3-6 7 Radiococcus radiodurans: endures 10,000 times the radiation dose lethal for humans FSLife Gainesville, April 3-6 8 Experiment on panspermia + Solar UV + = 100µm Carbon tape = Microastronauts? Lima et al. 2010; Lima et al. Concordia 2011 micrometeoriteFSLife Gainesville, April 3-6 9 ASTROBIOLOGY THE EXTREMOPHILIC ZONE (EZ), A NEW CONCEPT : “EZ IS THE TEMPERATURE REGION AROUND A STAR WHERE (TERRESTRIAL) EXTREMOPHILES COULD LIVE ” EZs are obviously more extended than HZs. FSLife Gainesville, April 3-6 10 SOME RESULTS a) for rocky planets supposed to be in the HZ < b) for hypothetical moons around gaseous giants in the HZ FSLife Gainesville, April 3-6 11 Results for the Solar System Look out! Earth will be outside < both the HZ and EZ in 1.7 G years from now for any reasonable CO2 partial pressure. Mars will then be inside the EZ. FSLife Gainesville, April 3-6 12 Habitability in the Solar System HZ: 273K<T<373; EZ: 190<T<390 FSLife Gainesville, April 3-6 13 13 Habitability in the Solar System (cont.) FSLife Gainesville, April 3-6 14 14 Habitability in the Solar System (cont.) FSLife Gainesville, April 3-6 15 15 Results for the Solar System Look out! Earth will be outside < both the HZ and EZ in 1.7 G years from now for any reasonable CO2 partial pressure. Mars will then be inside the EZ. FSLife Gainesville, April 3-6 16 Analysis of habitability for the Gl 581 System Mayor et al. 2008: “GL 581c is in the HZ” (GL 581d is a super-Earth with 6 M ) Earth FSLife Gainesville, April 3-6 17 17 Analysis of habitability for the Gl 581 System (cont.) GL581d can hardly be in the HZ FSLife Gainesville, April 3-6 18 18 Analysis of habitability for the Gl 581 System (cont) GL 581 b is in the EZ FSLife Gainesville, April 3-6 19 19 Habitability in the planetary system of Gliese 581 (M3V) Super-Earth planet “d” (6 MEarth) stays in HZ and EZ from 2.2 G years on. But, it is outside the HZ for any< reasonable CO2 partial pressure. Nevertheless, the planet is in the EZ even for small CO2 pressures as e.g. on Earth (3x10-4 bars). FSLife Gainesville, April 3-6 20 Analysis of habitability for the HD 37124 System G4V star FSLife Gainesville, April 3-6 21 21 Analysis of habitability for the HD 37124 System (cont.) FSLife Gainesville, April 3-6 22 22 Analysis of habitability for the HD 37124 System (cont.) FSLife Gainesville, April 3-6 23 23 Analysis of habitability for the HD 37124 System (cont.) FSLife Gainesville, April 3-6 24 24 Habitability in the planetary system of HD 37124 (G4V) Planet “c” enters HZ after 6 G years but very high CO2 partial pressures are needed for it. < It is always in the EZ for any CO2 pressure. Exomoons with masses capable to maintain plate tectonics and an atmosphere are able to exist orbiting HD37124 c. FSLife Gainesville, April 3-6 25 HZ EZ Habitable and ExtremophilicFSLife Gainesville, zones April for 3-6 some 26planetary systems CONCLUSIONS Using a model of an Earth-like atmosphere and a model for the orbital stability of exomoons, we show that terrestrial extremophile organisms can survive on the surface of planets and moons of extrasolar systems <in a region larger than the “classical” HZ. Definition of “Extremophilic Zone” (EZ) Next step: to use detailed atmospheric models with other free parameters to investigate the possible survival of extremophiles in these environments. THANK YOU! FSLife Gainesville, April 3-6 28.
Load more

Recommended publications
  • SIG #1:Towards a Much Needed Consensus in the Exoplanet Community
    SIG #1:Towards A much Needed Consensus in the Exoplanet Community 1.0 Sun M0 M1 • O M2 M / 10 M 5 M 10 M M3 E at K = 3 m/s E at K = 10 m/s E at K = 3 m/s M5 0.1 0.1 1.0 10.0 Distance (AU) Figure 1 The Habitable Zone around main sequence stars, and the velocity semi-amplitude of the Doppler wobble induced by 5 and 10 Earth-mass planets on the star. Venus, Earth and Mars are shown as colored dots. wobble caused by a terrestrial-mass planet. RV studies have uncovered planetary systems around 20 M dwarfs to date, including the low mass planetary system around GJ581,3 and KOI-961.4 These observations⇠ suggest that, while hot Jupiters may be rare in M star systems,5 lower mass planets do exist around M stars and may be rather common. Theoretical work based on core-accretion models and simulations also predicts that short period Neptune mass planets should be common around M stars.6 Climate simulations of planets in the HZ around M stars7 show that tidal locking does not necessarily lead to atmospheric collapse The habitability of terrestrial planets around M stars has also been explored by many groups8 As seen in Figure 1, a 10 Earth-mass planets in the HZ are already detectable at more than 3σ with a velocity precision of 3m/s, and an instrument capable of 1-3m/s precision will have the sensitivity to discover terrestrial mass planets around the majority of mid-late M dwarfs.
    [Show full text]
  • Planets Galore
    physicsworld.com Feature: Exoplanets Detlev van Ravenswaay/Science Photo Library Planets galore With almost 1700 planets beyond our solar system having been discovered, climatologists are beginning to sketch out what these alien worlds might look like, as David Appell reports And so you must confess Jupiters, black Jupiters or puffy Jupiters; there are David Appell is a That sky and earth and sun and all that comes to be hot Neptunes and mini-Neptunes; exo-Earths, science writer living Are not unique but rather countless examples of a super-Earths and eyeball Earths. There are planets in Salem, Oregon, class. that orbit pulsars, or dim red dwarf stars, or binary US, www. Lucretius, Roman poet and philosopher, from star systems. davidappell.com De Rerum Natura, Book II Astronomers are in heaven and planetary scien- tists have an entirely new zoo to explore. “This is the The only thing more astonishing than their diver- best time to be an exoplanetary astronomer,” says sity is their number. We’re talking exoplanets exoplanetary astronomer Jason Wright of Pennsyl- – planets around stars other than our Sun. And vania State University. “Things have really exploded they’re being discovered in Star Trek quantities: recently.” Proving the point is that a third of all 1692 as this article goes to press, and another 3845 abstracts at a recent meeting of the American Astro- unconfirmed candidates. nomical Society were related to exoplanets. The menagerie includes planets that are pink, This explosion is largely thanks to the Kepler space blue, brown or black. Some have been labelled hot observatory.
    [Show full text]
  • Habitability of the Goldilocks Planet Gliese 581G: Results from Geodynamic Models
    Astronomy & Astrophysics manuscript no. final c ESO 2021 August 23, 2021 Habitability of the Goldilocks planet Gliese 581g: Results from geodynamic models (Research Note) W. von Bloh1, M. Cuntz2, S. Franck1, and C. Bounama1 1 Potsdam Institute for Climate Impact Research, P.O. Box 60 12 03, 14412 Potsdam, Germany e-mail: [email protected] 2 Department of Physics, University of Texas at Arlington, Box 19059, Arlington, TX 76019, USA Received ¡date¿ / Accepted ¡date¿ ABSTRACT Aims. In 2010, detailed observations have been published that seem to indicate another super-Earth planet in the system of Gliese 581 located in the midst of the stellar climatological habitable zone. The mass of the planet, known as Gl 581g, has been estimated to be between 3.1 and 4.3 M⊕. In this study, we investigate the habitability of Gl 581g based on a previously used concept that explores its long-term possibility of photosynthetic biomass production, which has already been used to gauge the principal possibility of life regarding the super-Earths Gl 581c and Gl 581d. Methods. A thermal evolution model for super-Earths is used to calculate the sources and sinks of atmospheric carbon dioxide. The habitable zone is determined by the limits of photosynthetic biological productivity on the planetary surface. Models with different ratios of land / ocean coverage are pursued. Results. The maximum time span for habitable conditions is attained for water worlds at a position of about 0.14 ± 0.015 AU, which deviates by just a few percent (depending on the adopted stellar luminosity) from the actual position of Gl 581g, an estimate that does however not reflect systematic uncertainties inherent in our model.
    [Show full text]
  • An Earth-Sized Planet in the Habitable Zone of a Cool Star Authors: Elisa V
    Title: An Earth-sized Planet in the Habitable Zone of a Cool Star Authors: Elisa V. Quintana1,2*, Thomas Barclay2,3, Sean N. Raymond4,5, Jason F. Rowe1,2, Emeline Bolmont4,5, Douglas A. Caldwell1,2, Steve B. Howell2, Stephen R. Kane6, Daniel Huber1,2, Justin R. Crepp7, Jack J. Lissauer2, David R. Ciardi8, Jeffrey L. Coughlin1,2, Mark E. Everett9, Christopher E. Henze2, Elliott Horch10, Howard Isaacson11, Eric B. Ford12,13, Fred C. Adams14,15, Martin Still3, Roger C. Hunter2, Billy Quarles2, Franck Selsis4,5 Affiliations: 1SETI Institute, 189 Bernardo Ave, Suite 100, Mountain View, CA 94043, USA. 2NASA Ames Research Center, Moffett Field, CA 94035, USA. 3Bay Area Environmental Research Institute, 596 1st St West Sonoma, CA 95476, USA. 4Univ. Bordeaux, Laboratoire d'Astrophysique de Bordeaux, UMR 5804, F-33270, Floirac, France. 5CNRS, Laboratoire d'Astrophysique de Bordeaux, UMR 5804, F-33270, Floirac, France. 6San Francisco State University, 1600 Holloway Avenue, San Francisco, CA 94132, USA. 7University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556, USA. 8NASA Exoplanet Science Institute, California Institute of Technology, 770 South Wilson Avenue Pasadena, CA 91125, USA. 9National Optical Astronomy Observatory, 950 N. Cherry Ave, Tucson, AZ 85719 10Southern Connecticut State University, New Haven, CT 06515 11University of California, Berkeley, CA, 94720, USA. 12Center for Exoplanets and Habitable Worlds, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA 13Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA 14Michigan Center for Theoretical Physics, Physics Department, University of Michigan, Ann Arbor, MI 48109, USA 15Astronomy Department, University of Michigan, Ann Arbor, MI 48109, USA *Correspondence to: [email protected] ! ! ! ! ! ! ! Abstract: The quest for Earth-like planets represents a major focus of current exoplanet research.
    [Show full text]
  • Life on Extra-Solar Planets Leaving the Solar System 1995: 51 Pegasi
    Life on extra-solar planets Leaving the solar system 1995: 51 Pegasi ! 50 Ly from Earth ! V = 5.5 ! Spectral class G2 ! Sun-like star 1995: 51 Pegasi Unseen planets around stars ! cause a Doppler wobble in the stars motion which ! results in a periodic variation in the parent star’s line of sight velocity. ! This causes the characteristic spectral absorption lines present in the star to shift their position in time with the velocity variation. ! Careful analysis of the star’s spectrum then reveals the velocity shift. ! Which reveals the unseen planet. 51 Pegasi b: a “hot Jupiter” ! 51 Peg b is a Jupiter sized planet orbiting some 0.05 AU from its parent, Sun-like star every 4 days. ! How do we know this information? ! The period of the velocity curve is the same as the orbital period. ! The amplitude of the velocity curve is equal to the max/min velocity “wobble” of the star. ! We can compute an accurate mass for the parent star from its spectral type (colour + spectrum): G2-G4. ! Given the star mass and velocity and the orbital period of the planet, we can calculate the planet mass. Masses from the Doppler technique are lower limits Hot Jupiters: a new class of planet Planetary migration Upsilon Andromedae b, c, d! Gliese 581 ! Gliese 581 is a cool, M-type star ! 30% the mass of the Sun 1 ! 20 Ly away. 2 3 Gliese 581: first planet in habitable zone 3 Earth masses 7 Earth masses 2 16 5 7 Earth masses The properties of the known exoplanets Limitations of the Doppler technique for finding planets ! The amplitude of the velocity curve is proportional to the planet mass - harder to discover small planets.
    [Show full text]
  • The Hunt for Sara Seager Astronomers Are fi Nding and Studying Worlds Just a Little Larger Than Ours
    Closing in on Life-Bearing Planets Super-EarthsThe Hunt for sara seager Astronomers are fi nding and studying worlds just a little larger than ours. For thousands of years people What’s a Super-Earth? Super-Earths are unoffi cially defi ned as planets with have wondered if we are alone. masses between about 1 and 10 Earth masses. The term is largely reserved for planets that are rocky in nature rather Modern astronomers pose the than for planets that have icy interiors or signifi cant gas envelopes. Astronomers refer to the latter as exo-Nep- question in a slightly diff erent tunes. Because super-Earths and exo-Neptunes may be continuous and have an overlapping mass range, they are way, a way that can be answered often discussed together. Super-Earths are fascinating because they have no quantitatively, in stages, in the solar-system counterparts, because they represent our nearest-term hope for fi nding habitable planets, and near future: Are there planets because they should display a huge diversity of properties. The wide and almost continuous spread of giant exo- like Earth? Are they common? planet masses and orbits illustrates the random nature of planet formation and migration; this trend surely extends Do any of them have signs of to super-Earths as well. Indeed, even though about two dozen are known so far, their range of masses and orbits life? The hunt for life-sustain- supports this notion. Current detection methods are biased toward fi nding close-in super-Earths, so there’s ing exoplanets is accelerating as undoubtedly a huge population waiting to be discovered.
    [Show full text]
  • On the Probability of Habitable Planets
    On the probability of habitable planets. François Forget LMD, Institut Pierre Simon Laplace, CNRS, UPMC, Paris, France E-mail : [email protected] Published in “International Journal of Astrobiology” doi:10.1017/S1473550413000128, Cambridge University Press 2013. Abstract In the past 15 years, astronomers have revealed that a significant fraction of the stars should harbor planets and that it is likely that terrestrial planets are abundant in our galaxy. Among these planets, how many are habitable, i.e. suitable for life and its evolution? These questions have been discussed for years and we are slowly making progress. Liquid water remains the key criterion for habitability. It can exist in the interior of a variety of planetary bodies, but it is usually assumed that liquid water at the surface interacting with rocks and light is necessary for the emergence of a life able to modify its environment and evolve. A first key issue is thus to understand the climatic conditions allowing surface liquid water assuming a suitable atmosphere. This have been studied with global mean 1D models which has defined the “classical habitable zone”, the range of orbital distances within which worlds can maintain liquid water on their surfaces (Kasting et al. 1993). A new generation of 3D climate models based on universal equations and tested on bodies in the solar system is now available to explore with accuracy climate regimes that could locally allow liquid water. A second key issue is now to better understand the processes which control the composition and the evolution of the atmospheres of exoplanets, and in particular the geophysical feedbacks that seems to be necessary to maintain a continuously habitable climate.
    [Show full text]
  • Astrobiology Math
    National Aeronautics andSpace Administration Aeronautics National Astrobiology Math This collection of activities is based on a weekly series of space science problems intended for students looking for additional challenges in the math and physical science curriculum in grades 6 through 12. The problems were created to be authentic glimpses of modern science and engineering issues, often involving actual research data. The problems were designed to be one-pagers with a Teacher’s Guide and Answer Key as a second page. This compact form was deemed very popular by participating teachers. Astrobiology Math Mathematical Problems Featuring Astrobiology Applications Dr. Sten Odenwald NASA / ADNET Corp. [email protected] Astrobiology Math i http://spacemath.gsfc.nasa.gov Acknowledgments: We would like to thank Ms. Daniella Scalice for her boundless enthusiasm in the review and editing of this resource. Ms. Scalice is the Education and Public Outreach Coordinator for the NASA Astrobiology Institute (NAI) at the Ames Research Center in Moffett Field, California. We would also like to thank the team of educators and scientists at NAI who graciously read through the first draft of this book and made numerous suggestions for improving it and making it more generally useful to the astrobiology education community: Dr. Harold Geller (George Mason University), Dr. James Kratzer (Georgia Institute of Technology; Doyle Laboratory) and Ms. Suzi Taylor (Montana State University), For more weekly classroom activities about astronomy and space visit the Space Math@ NASA website, http://spacemath.gsfc.nasa.gov Image Credits: Front Cover: Collage created by Julie Fletcher (NAI), molecule image created by Jenny Mottar, NASA HQ.
    [Show full text]
  • Scientific American
    Medicine Climate Science Electronics How to Find the The Last Great Hacking the Best Treatments Global Warming Power Grid Winner of the 2011 National Magazine Award for General Excellence July 2011 ScientificAmerican.com PhysicsTHE IntellıgenceOF Evolution has packed 100 billion neurons into our three-pound brain. CAN WE GET ANY SMARTER? www.diako.ir© 2011 Scientific American www.diako.ir SCIENTIFIC AMERICAN_FP_ Hashim_23april11.indd 1 4/19/11 4:18 PM ON THE COVER Various lines of research suggest that most conceivable ways of improving brainpower would face fundamental limits similar to those that affect computer chips. Has evolution made us nearly as smart as the laws of physics will allow? Brain photographed by Adam Voorhes at the Department of Psychology, Institute for Neuroscience, University of Texas at Austin. Graphic element by 2FAKE. July 2011 Volume 305, Number 1 46 FEATURES ENGINEERING NEUROSCIENCE 46 Underground Railroad 20 The Limits of Intelligence A peek inside New York City’s subway line of the future. The laws of physics may prevent the human brain from By Anna Kuchment evolving into an ever more powerful thinking machine. BIOLOGY By Douglas Fox 48 Evolution of the Eye ASTROPHYSICS Scientists now have a clear view of how our notoriously complex eye came to be. By Trevor D. Lamb 28 The Periodic Table of the Cosmos CYBERSECURITY A simple diagram, which celebrates its centennial this 54 Hacking the Lights Out year, continues to serve as the most essential conceptual A powerful computer virus has taken out well-guarded tool in stellar astrophysics. By Ken Croswell industrial control systems.
    [Show full text]
  • The Universe Contents 3 HD 149026 B
    History . 64 Antarctica . 136 Utopia Planitia . 209 Umbriel . 286 Comets . 338 In Popular Culture . 66 Great Barrier Reef . 138 Vastitas Borealis . 210 Oberon . 287 Borrelly . 340 The Amazon Rainforest . 140 Titania . 288 C/1861 G1 Thatcher . 341 Universe Mercury . 68 Ngorongoro Conservation Jupiter . 212 Shepherd Moons . 289 Churyamov- Orientation . 72 Area . 142 Orientation . 216 Gerasimenko . 342 Contents Magnetosphere . 73 Great Wall of China . 144 Atmosphere . .217 Neptune . 290 Hale-Bopp . 343 History . 74 History . 218 Orientation . 294 y Halle . 344 BepiColombo Mission . 76 The Moon . 146 Great Red Spot . 222 Magnetosphere . 295 Hartley 2 . 345 In Popular Culture . 77 Orientation . 150 Ring System . 224 History . 296 ONIS . 346 Caloris Planitia . 79 History . 152 Surface . 225 In Popular Culture . 299 ’Oumuamua . 347 In Popular Culture . 156 Shoemaker-Levy 9 . 348 Foreword . 6 Pantheon Fossae . 80 Clouds . 226 Surface/Atmosphere 301 Raditladi Basin . 81 Apollo 11 . 158 Oceans . 227 s Ring . 302 Swift-Tuttle . 349 Orbital Gateway . 160 Tempel 1 . 350 Introduction to the Rachmaninoff Crater . 82 Magnetosphere . 228 Proteus . 303 Universe . 8 Caloris Montes . 83 Lunar Eclipses . .161 Juno Mission . 230 Triton . 304 Tempel-Tuttle . 351 Scale of the Universe . 10 Sea of Tranquility . 163 Io . 232 Nereid . 306 Wild 2 . 352 Modern Observing Venus . 84 South Pole-Aitken Europa . 234 Other Moons . 308 Crater . 164 Methods . .12 Orientation . 88 Ganymede . 236 Oort Cloud . 353 Copernicus Crater . 165 Today’s Telescopes . 14. Atmosphere . 90 Callisto . 238 Non-Planetary Solar System Montes Apenninus . 166 How to Use This Book 16 History . 91 Objects . 310 Exoplanets . 354 Oceanus Procellarum .167 Naming Conventions . 18 In Popular Culture .
    [Show full text]
  • Viability of Lithopanspermia Between Planets of Gliese 581
    50th Lunar and Planetary Science Conference 2019 (LPI Contrib. No. 2132) 1634.pdf VIABILITY OF LITHOPANSPERMIA BETWEEN PLANETS OF GLIESE 581. K. E. Broad1 L. S. Brock2 and H. J. Melosh1, 1Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN 47907, 2Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721. Introduction: Soon after the discovery that some these results for the each of the small bodies ejected achondrite meteorites are of Martian origin (McSween, (10,000, in our study). 1985), the possibility arose that Earth and Mars might The Öpik-Arnold Method is useful for determining share a common pool of life (Melosh, 1988). Further, it the general character of orbital evolution of impact was later determined that the transfer of dormant mi- ejecta, providing quick results that are within a factor croorganisms is highly probable in our solar system of two of more time-consuming full orbital integrations (Mileikowsky et al., 2000), otherwise known as “litho- (Dones et al., 1999). We assume that the small bodies panspermia.” In the work reported here, we extend this are ejected from their parent planet at velocities greater concept to extrasolar systems. than escape velocity and obtain orbits around the star. The Gliese 581 multiplanet system (also referred to 10,000 particles of impact ejecta were considered, as GJ 581 in this work) is fitting for our focus in study- leaving each of the four planets in the system at various ing impact exchange and the possibility of litho- initial velocities and randomly distributed directions. panspermia. Of spectral class M3V and approximately The resulting fates of the ejecta particles (including one third the mass of our Sun (0.31 MSun), Gliese 581 time in space, approach velocity and planet of impact hosts a planetary system consisting of four to six plan- or ejection) were then analyzed and compared.
    [Show full text]
  • Henk Takken Van 'Wijngoed Kranenburg' Verguld Met Parel Van
    Dinsdag 1 mei 2007 41e jaargang no. 8 Henk Takken van 'Wijngoed Kranenburg' verguld met Parel van Vorden middels is de vroegere varkensschuur naast de boerderij omgetoverd tot een ‘proeflokaal’ met zitjes, waar bezoe- kers de wijn kunnen proeven en waar lezingen en cursussen kunnen wor- den gehouden. Hier beginnen en ein- digen ook eventuele rondleidingen. Mensen die gelnteresseerd zijn kun- nen op Hemelvaartsdag tussen 10.00 – 17.00 uur terecht. Dan wordt er open huis gehouden. Voor meer informatie www.wijngoedkranenburg.nl Maar eerst ontvangt Henk Takken op maan- dagavond 7 mei om 20.00 uur de Parel van Vorden 2006. Fietsroutes langs koolzaad- velden vielen in de smaak De wijngaard Henk Takken is bijzonder verguld dat de Werkgroep Leefbaarheid Vorden zeggen waar, we zijn nog in onderhan- zijn ‘Wijngoed Kranenburg’ de Parel van Vorden heeft toegekend. ‘Ik vind deling’, zo zegt hij. Dat ook het ver- het leuk dat anderen het leuk vinden dat wij het initiatief tot het oprich- bouwen van druiven en alles wat daar- ten van deze wijnboerderij hebben genomen. Als ondernemer streelt het bij komt kijken, met ‘vallen en op- je toch’, zo zegt Henk Takken. staan’ gepaard gaat, ondervond Henk Takken vorige week aan den lijve. Zegt De Werkgroep Leefbaarheid Vorden circa 35 wijnboeren. Wij hebben met hij:’ In de nacht van vrijdag op zater- reikt ieder jaar ( al vanaf 1979 ) deze in totaal elf personen een coöperatie dag een nachtvorst ( min 3,8 graden ) onderscheiding jaarlijks uit. Destijds te weten de Verenigde Achterhoekse met als gevolg dat de helft van de bloe- was de eerste Parel van Vorden be- Wijnbouwers opgericht.
    [Show full text]