It Is Texas Star Party Time! If You Aren't Going to TSP, Get That Telescope out and Come out to the FWAS Observatory and Start Your Summer Observing!
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Near-Infrared Luminosity Relations and Dust Colors L
A&A 578, A47 (2015) Astronomy DOI: 10.1051/0004-6361/201525817 & c ESO 2015 Astrophysics Obscuration in active galactic nuclei: near-infrared luminosity relations and dust colors L. Burtscher1, G. Orban de Xivry1, R. I. Davies1, A. Janssen1, D. Lutz1, D. Rosario1, A. Contursi1, R. Genzel1, J. Graciá-Carpio1, M.-Y. Lin1, A. Schnorr-Müller1, A. Sternberg2, E. Sturm1, and L. Tacconi1 1 Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, Gießenbachstr., 85741 Garching, Germany e-mail: [email protected] 2 Raymond and Beverly Sackler School of Physics & Astronomy, Tel Aviv University, 69978 Ramat Aviv, Israel Received 5 February 2015 / Accepted 5 April 2015 ABSTRACT We combine two approaches to isolate the AGN luminosity at near-IR wavelengths and relate the near-IR pure AGN luminosity to other tracers of the AGN. Using integral-field spectroscopic data of an archival sample of 51 local AGNs, we estimate the fraction of non-stellar light by comparing the nuclear equivalent width of the stellar 2.3 µm CO absorption feature with the intrinsic value for each galaxy. We compare this fraction to that derived from a spectral decomposition of the integrated light in the central arcsecond and find them to be consistent with each other. Using our estimates of the near-IR AGN light, we find a strong correlation with presumably isotropic AGN tracers. We show that a significant offset exists between type 1 and type 2 sources in the sense that type 1 MIR X sources are 7 (10) times brighter in the near-IR at log LAGN = 42.5 (log LAGN = 42.5). -
On the Origin and Propagation of Ultra-High Energy Cosmic Rays (Measurements & Prediction Techniques)
Dissertation On the Origin and Propagation of Ultra-High Energy Cosmic Rays (Measurements & Prediction Techniques) Nils Nierstenhoefer Wuppertal, 2011 University of Wuppertal Supervisor/First reviewer: Prof. Dr. K.-H. Kampert Second reviewer: Prof. Dr. M. Risse Motivation & Preface It is a long known fact that cosmic rays reach Earth with tremendous energies of even above 1020 eV. Despite of decades of intensive research, it was not possible to finally reveal the origin of these par- ticles. The main obstacle in this field is their rare occurrence. This is due to a very steep energy spectrum. To make this point more clear, one roughly expects to observe less than one particle per km2 in one century exceeding energies larger than 1020 eV. To overcome the limitation of low statis- tics, larger and larger cosmic ray detectors have been deployed. Today’s largest cosmic ray detector is the Pierre Auger observatory (PAO) which was constructed in the Pampa Amarilla in Argentina. It covers an area of 3000 km2 and provides the largest set of observations of ultra-high energy cosmic rays (UHECR) in history. A second difficulty in understanding the origin of UHECR should be pointed out: Galactic and extra- galactic magnetic fields might alter the direction of even the highest energy events in a way that they do not point back to their source. In 2007 and 2008, already before the completion of the full detector, the Auger collaboration pub- lished a set of three important papers [1, 2, 3]. The first paper dealt with the correlation of the arrival directions of the highest energetic events with the distribution of active galactic nuclei (AGN) closer than 75Mpc from a catalog compiled by Veron-Cetty and Veron (VC-V) [4]. -
A Disturbed Galactic Duo 20 April 2011
A disturbed galactic duo 20 April 2011 neighbours. This galactic grouping, found about 70 million light- years away in the constellation Sextans (The Sextant), was discovered by the English astronomer William Herschel in 1783. Modern astronomers have gauged the distance between NGC 3169 (left) and NGC 3166 (right) as a mere 50 000 light-years, a separation that is only about half the diameter of the Milky Way galaxy. In such tight quarters, gravity can start to play havoc with galactic structure. Spiral galaxies like NGC 3169 and NGC 3166 tend to have orderly swirls of stars and dust pinwheeling about their glowing centres. Close encounters with other massive objects can jumble this classic configuration, often serving as a disfiguring prelude to the merging of galaxies into one larger galaxy. So far, the interactions of NGC 3169 and NGC 3166 have just lent a bit of character. NGC 3169's This image from the Wide Field Imager on the arms, shining bright with big, young, blue stars, MPG/ESO 2.2-meter telescope at the La Silla have been teased apart, and lots of luminous gas Observatory in Chile captures the pair of galaxies NGC has been drawn out from its disc. In NGC 3166's 3169 (left) and NGC 3166 (right). These adjacent case, the dust lanes that also usually outline spiral galaxies display some curious features, demonstrating arms are in disarray. Unlike its bluer counterpart, that each member of the duo is close enough to feel the NGC 3166 is not forming many new stars. distorting gravitational influence of the other. -
Vol. 73, No. 1 December 2020
Published by the Astronomical League Vol. 73, No. 1 December 2020 PUBLIC OUTREACH DURING A PANDEMIC THE ULTIMATE OBSERVING CHALLENGE th 75 GEAR UP FOR SOLAR CYCLE 25 THE ASTRONOMICAL LEAGUE’S 75TH ANNIVERSARY AN EMPLOYEE-OWNED COMPANY NEW FREE SHIPPING on order of $75 or more & INSTALLMENT BILLING on orders over $350 PRODUCTS Standard Shipping. Some exclusions apply. Exclusions apply. Orion® StarShoot™ Compact Astro Orion® StarShoot™ Mini 6.3mp Tracker Imaging Cameras (sold separately) Orion® StarShoot™ G26 APS-C Orion® GiantView™ BT-100 ED #21192 $280 Color #51883 $400 Color Imaging Camera 90-degree Binocular Telescope (Mount not Mono #51884 $430 #51458 $1,800 #51878 $2,600 included) computer not Trust 2019 included Proven reputation for Orion® U-Mount innovation, dependability and and Paragon Plus service… for over 45 years! XHD Package #22115 $600 Superior Value Orion® StarShoot™ Deep Space High quality products at Orion® StarShoot™ G21 Deep Space Imaging Cameras (sold separately) Orion® HDX 12" Truss RC Ultimate affordable prices Color Imaging Camera G10 Color #51452 $1,200 Astro- Imaging Package #54290 $950 G16 Mono #51457 $1,300 #21101 $9,500 Wide Selection Extensive assortment of award winning Orion brand 2019 products and solutions Customer Support Orion products are also available through select Orion® MagneticDobsonian authorized dealers able to Counterweights offer professional advice and Orion® Premium Linear Orion® EON 130mm ED Triplet Orion® 2x54 Ultra Wide Angle 1-Pound #7006 $25 Binoculars post-purchase support BinoViewer -
TSP 2004 Telescope Observing Program
THE TEXAS STAR PARTY 2004 TELESCOPE OBSERVING CLUB BY JOHN WAGONER TEXAS ASTRONOMICAL SOCIETY OF DALLAS RULES AND REGULATIONS Welcome to the Texas Star Party's Telescope Observing Club. The purpose of this club is not to test your observing skills by throwing the toughest objects at you that are hard to see under any conditions, but to give you an opportunity to observe 25 showcase objects under the ideal conditions of these pristine West Texas skies, thus displaying them to their best advantage. This year we have planned a program called “Starlight, Starbright”. The rules are simple. Just observe the 25 objects listed. That's it. Any size telescope can be used. All observations must be made at the Texas Star Party to qualify. All objects are within range of small (6”) to medium sized (10”) telescopes, and are available for observation between 10:00PM and 3:00AM any time during the TSP. Each person completing this list will receive an official Texas Star Party Telescope Observing Club lapel pin. These pins are not sold at the TSP and can only be acquired by completing the program, so wear them proudly. To receive your pin, turn in your observations to John Wagoner - TSP Observing Chairman any time during the Texas Star Party. I will be at the outside door leading into the TSP Meeting Hall each day between 1:00 PM and 2:30 PM. If you finish the list the last night of TSP, or I am not available to give you your pin, just mail your observations to me at 1409 Sequoia Dr., Plano, Tx. -
April 14 2018 7:00Pm at the April 2018 Herrett Center for Arts & Science College of Southern Idaho
Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting President’s Message Tim Frazier Saturday, April 14th 2018 April 2018 7:00pm at the Herrett Center for Arts & Science College of Southern Idaho. It really is beginning to feel like spring. The weather is more moderate and there will be, hopefully, clearer skies. (I write this with some trepidation as I don’t want to jinx Public Star Party Follows at the it in a manner similar to buying new equipment will ensure at least two weeks of Centennial Observatory cloudy weather.) Along with the season comes some great spring viewing. Leo is high overhead in the early evening with its compliment of galaxies as is Coma Club Officers Berenices and Virgo with that dense cluster of extragalactic objects. Tim Frazier, President One of my first forays into the Coma-Virgo cluster was in the early 1960’s with my [email protected] new 4 ¼ inch f/10 reflector and my first star chart, the epoch 1960 version of Norton’s Star Atlas. I figured from the maps I couldn’t miss seeing something since Robert Mayer, Vice President there were so many so closely packed. That became the real problem as they all [email protected] appeared as fuzzy spots and the maps were not detailed enough to distinguish one galaxy from another. I still have that atlas as it was a precious Christmas gift from Gary Leavitt, Secretary my grandparents but now I use better maps, larger scopes and GOTO to make sure [email protected] it is M84 or M86. -
SAA 100 Club
S.A.A. 100 Observing Club Raleigh Astronomy Club Version 1.2 07-AUG-2005 Introduction Welcome to the S.A.A. 100 Observing Club! This list started on the USENET newsgroup sci.astro.amateur when someone asked about everyone’s favorite, non-Messier objects for medium sized telescopes (8-12”). The members of the group nominated objects and voted for their favorites. The top 100 objects, by number of votes, were collected and ranked into a list that was published. This list is a good next step for someone who has observed all the objects on the Messier list. Since it includes objects in both the Northern and Southern Hemispheres (DEC +72 to -72), the award has two different levels to accommodate those observers who aren't able to travel. The first level, the Silver SAA 100 award requires 88 objects (all visible from North Carolina). The Gold SAA 100 Award requires all 100 objects to be observed. One further note, many of these objects are on other observing lists, especially Patrick Moore's Caldwell list. For convenience, there is a table mapping various SAA100 objects with their Caldwell counterparts. This will facilitate observers who are working or have worked on these lists of objects. We hope you enjoy looking at all the great objects recommended by other avid astronomers! Rules In order to earn the Silver certificate for the program, the applicant must meet the following qualifications: 1. Be a member in good standing of the Raleigh Astronomy Club. 2. Observe 80 Silver observations. 3. Record the time and date of each observation. -
Aaron J. Romanowsky Curriculum Vitae (Rev. 1 Septembert 2021) Contact Information: Department of Physics & Astronomy San
Aaron J. Romanowsky Curriculum Vitae (Rev. 1 Septembert 2021) Contact information: Department of Physics & Astronomy +1-408-924-5225 (office) San Jose´ State University +1-409-924-2917 (FAX) One Washington Square [email protected] San Jose, CA 95192 U.S.A. http://www.sjsu.edu/people/aaron.romanowsky/ University of California Observatories +1-831-459-3840 (office) 1156 High Street +1-831-426-3115 (FAX) Santa Cruz, CA 95064 [email protected] U.S.A. http://www.ucolick.org/%7Eromanow/ Main research interests: galaxy formation and dynamics – dark matter – star clusters Education: Ph.D. Astronomy, Harvard University Nov. 1999 supervisor: Christopher Kochanek, “The Structure and Dynamics of Galaxies” M.A. Astronomy, Harvard University June 1996 B.S. Physics with High Honors, June 1994 College of Creative Studies, University of California, Santa Barbara Employment: Professor, Department of Physics & Astronomy, Aug. 2020 – present San Jose´ State University Associate Professor, Department of Physics & Astronomy, Aug. 2016 – Aug. 2020 San Jose´ State University Assistant Professor, Department of Physics & Astronomy, Aug. 2012 – Aug. 2016 San Jose´ State University Research Associate, University of California Observatories, Santa Cruz Oct. 2012 – present Associate Specialist, University of California Observatories, Santa Cruz July 2007 – Sep. 2012 Researcher in Astronomy, Department of Physics, Oct. 2004 – June 2007 University of Concepcion´ Visiting Adjunct Professor, Faculty of Astronomical and May 2005 Geophysical Sciences, National University of La Plata Postdoctoral Research Fellow, School of Physics and Astronomy, June 2002 – Oct. 2004 University of Nottingham Postdoctoral Fellow, Kapteyn Astronomical Institute, Oct. 1999 – May 2002 Rijksuniversiteit Groningen Research Fellow, Harvard-Smithsonian Center for Astrophysics June 1994 – Oct. -
ASLC Information Packet
ASLC Information Packet Welcome To The Astronomical Society Of Las Cruces Greetings from the nearly 100 professional and amateur astronomers who comprise the Astronomical Society of Las Cruces (ASLC). Whether you’re new to astronomy or a seasoned veteran, we hope you’ll find participation in the ASLC to be both enjoyable and fulfilling. The club was formed in 1951 by a group of dedicated astronomers including Clyde Tombaugh, who had discovered Pluto just 21 years earlier. For over 50 years, we’ve been sharing the universe with our community under our beautiful Southern New Several members of the club do astrophotography. This Mexico skies. image of the Andromeda galaxy is by Dave Dockery ASLC has active observing, education and public outreach programs. We host a public Moongaze each month, offer adult education courses and support countless star parties for local schools, scouts and various organizations. In addition, we hold a meeting each month featuring a presentation by one of our members or an invited guest. ASLC members support clinics to help new telescope owners learn how to use their equipment. And for individuals who don’t yet have equipment, we offer telescope making workshops. Many of our amateur members go On Saturday evenings around the first quarter beyond observing and collect scientific data on minor moon,club members and the public gather in front of The International Delights Cafe for our monthly Moongaze planets and variable stars. The opportunities are as endless as the stars. The information contained in this packet should help acquaint you with our various activities including our What’s Inside regular meetings and events, our observing sites, Welcome! .............................................. -
Caldwell Catalogue - Wikipedia, the Free Encyclopedia
Caldwell catalogue - Wikipedia, the free encyclopedia Log in / create account Article Discussion Read Edit View history Caldwell catalogue From Wikipedia, the free encyclopedia Main page Contents The Caldwell Catalogue is an astronomical catalog of 109 bright star clusters, nebulae, and galaxies for observation by amateur astronomers. The list was compiled Featured content by Sir Patrick Caldwell-Moore, better known as Patrick Moore, as a complement to the Messier Catalogue. Current events The Messier Catalogue is used frequently by amateur astronomers as a list of interesting deep-sky objects for observations, but Moore noted that the list did not include Random article many of the sky's brightest deep-sky objects, including the Hyades, the Double Cluster (NGC 869 and NGC 884), and NGC 253. Moreover, Moore observed that the Donate to Wikipedia Messier Catalogue, which was compiled based on observations in the Northern Hemisphere, excluded bright deep-sky objects visible in the Southern Hemisphere such [1][2] Interaction as Omega Centauri, Centaurus A, the Jewel Box, and 47 Tucanae. He quickly compiled a list of 109 objects (to match the number of objects in the Messier [3] Help Catalogue) and published it in Sky & Telescope in December 1995. About Wikipedia Since its publication, the catalogue has grown in popularity and usage within the amateur astronomical community. Small compilation errors in the original 1995 version Community portal of the list have since been corrected. Unusually, Moore used one of his surnames to name the list, and the catalogue adopts "C" numbers to rename objects with more Recent changes common designations.[4] Contact Wikipedia As stated above, the list was compiled from objects already identified by professional astronomers and commonly observed by amateur astronomers. -
Cosmic Cockroaches!
Volume 16, Number 8 August 2007 In This Issue Sail Planes, Music, and ISS Page One Photos by Greg Ozimek, Dale Ochalek • Sail Planes, Music, and ISS • Cosmic Cockroaches! Inside Stuff 2 President’s Corner 3 Meeting Minutes 6 Next Meeting Agenda 7 FAAC Events 2007 7 Treasurer’s Report 7 Astro Imaging SIG 7 Items for Sale 8 GLSG5 – Reserve Your Spot 8 FAAC has Calendars- 2008 8 New Members Doug Bauer is saddled up in back, for a smooth glide in the skies (Greg Ozimek photo). 9 Crater Clavius Start with lots of good food, conversation, sunshine, and sail planes, add 10 Astronomy at the slide guitar music, then top it all with fireworks, a clear night for observing, Beach and even a late flyover by the International Space Station, and you’ve got a 11 Dark Sky Workshop successful, 2nd annual SEMTA/FAAC picnic (August 11 at Richmond Airport). ...continued on page 8 Cosmic Cockroaches! Dr. Tony Phillips Cockroaches are supposed to be tough, able to survive anything from a good stomping to a nuclear blast. But roaches are wimps compared to a little molecule that has recently caught the eye of biologists and astronomers— the polycyclic aromatic hydrocarbon. ...continued on page 3 Page 2 STAR STUFF Ancient Knowledge – Set in Stone STAR STUFF AUGUST 2007 - VOL. 16 - NO. 8 President’s Corner Don Klaser, President, FAAC STAR STUFF is published eleven times each year by the While doing research for the presentation on the FORD AMATEUR ASTRONOMY CLUB P.O. Box 7527 calendar and western culture that I gave last year I came across the subject of archaeoastronomy. -
Ranch Meals Great Texas Giveaway I & Ii for Late Arrivals and 2
3:30–3:55 Origin of the Elements:Stellar 1:20 PM McDonald Bus departs The TEXAS STAR PARTY Nucleosynthesis – Molly Wakeling 1:30 PM Museum of Big Bend Tour departs TEXAS STAR PARTY PROGRAM 4:00-4:30 Scientific Travel - Education and (car pool meet at Ranch office) Outreach: Kosovo Pranvera Hyseni 2:00 PM Annual Meeting: SW Region Sunday, May 6 4:30-5:30 TSP Registration (Meeting Hall) of the Astronomical League 2:00 PM Ranch Check-in Opens 6:30 Interfaith Worship Service 4:30-5:30 TSP Registration (Meeting Hall) 9:00 PM Front Gate closes / Dark-out (outside next to Pool Building) Jason Fry, Minister 7:30 PM Speaker – Alex McConahay Monday, May 7 “Which Way Is Up? Musings about Motion 1:00-5:00 TSP Registration (Meeting Hall) 7:30 PM Evening Speaker: Richard S and Direction in the Universe” 4:00-5:00 Orientation to TSP (Meeting Hall) Wright – “Adventures of an Accidental Awards and Great Texas Giveaway I 9:00 PM Front Gate closes / Dark-out Astronomer” 9 PM or 30 minutes after meeting: 9 PM or 30 minutes after meeting: Front Gate closes / Dark-out Tuesday, May 8 Front Gate closes / Dark-out (SCIENCE FICTION DAY!) Saturday, May 12 2018 PROGRAM 8:00 AM Birding excursion – Lodge north Thursday, May 10 1:00 PM McDonald Bus departs Afternoon MC: Kirk Kendrick Of Upper Field. Bring binoculars! (Hawaiian Shirt Day!) 1:00 PM McDonald Bus departs Afternoon MC: Richard Nugent 1:30-1:55 Birding at TSP THANK YOU 1:30-1:55 DSLR Astrophotography Darrell Lee 1:00 PM – Emergency Network Drill at Steve Grimsley 2:00-2:25 Mystic Creek Observatory The TSP and TSP attendees thank W5RSP REPEATER 442.8+, pl 110.9 – all 2:00-2:25 Parking Lot Astronomy in Jim Duke those who made this year’s licensed Hams invited to participate.