June 2020 BRAS Newsletter
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Naming the Extrasolar Planets
Naming the extrasolar planets W. Lyra Max Planck Institute for Astronomy, K¨onigstuhl 17, 69177, Heidelberg, Germany [email protected] Abstract and OGLE-TR-182 b, which does not help educators convey the message that these planets are quite similar to Jupiter. Extrasolar planets are not named and are referred to only In stark contrast, the sentence“planet Apollo is a gas giant by their assigned scientific designation. The reason given like Jupiter” is heavily - yet invisibly - coated with Coper- by the IAU to not name the planets is that it is consid- nicanism. ered impractical as planets are expected to be common. I One reason given by the IAU for not considering naming advance some reasons as to why this logic is flawed, and sug- the extrasolar planets is that it is a task deemed impractical. gest names for the 403 extrasolar planet candidates known One source is quoted as having said “if planets are found to as of Oct 2009. The names follow a scheme of association occur very frequently in the Universe, a system of individual with the constellation that the host star pertains to, and names for planets might well rapidly be found equally im- therefore are mostly drawn from Roman-Greek mythology. practicable as it is for stars, as planet discoveries progress.” Other mythologies may also be used given that a suitable 1. This leads to a second argument. It is indeed impractical association is established. to name all stars. But some stars are named nonetheless. In fact, all other classes of astronomical bodies are named. -
CONSTELLATION VULPECULA, the (LITTLE) FOX Vulpecula Is a Faint Constellation in the Northern Sky
CONSTELLATION VULPECULA, THE (LITTLE) FOX Vulpecula is a faint constellation in the northern sky. Its name is Latin for "little fox", although it is commonly known simply as the fox. It was identified in the seventeenth century, and is located in the middle of the northern Summer Triangle (an asterism consisting of the bright stars Deneb in Cygnus (the Swan), Vega in Lyra (the Lyre) and Altair in Aquila (the Eagle). Vulpecula was introduced by the Polish astronomer Johannes Hevelius in the late 17th century. It is not associated with any figure in mythology. Hevelius originally named the constellation Vulpecula cum ansere, or Vulpecula et Anser, which means the little fox with the goose. The constellation was depicted as a fox holding a goose in its jaws. The stars were later separated to form two constellations, Anser and Vulpecula, and then merged back together into the present-day Vulpecula constellation. The goose was left out of the constellation’s name, but instead the brightest star, Alpha Vulpeculae, carries the name Anser. It is one of the seven constellations created by Hevelius. The fox and the goose shown as ‘Vulpec. & Anser’ on the Atlas Coelestis of John Flamsteed (1729). The Fox and Goose is a traditional pub name in Britain. STARS There are no stars brighter than 4th magnitude in this constellation. The brightest star is: Alpha Vulpeculae, a magnitude 4.44m red giant at a distance of 297 light-years. The star is an optical binary (separation of 413.7") that can be split using binoculars. The star also carries the traditional name Anser, which refers to the goose the little fox holds in its jaws. -
Educator's Guide: Orion
Legends of the Night Sky Orion Educator’s Guide Grades K - 8 Written By: Dr. Phil Wymer, Ph.D. & Art Klinger Legends of the Night Sky: Orion Educator’s Guide Table of Contents Introduction………………………………………………………………....3 Constellations; General Overview……………………………………..4 Orion…………………………………………………………………………..22 Scorpius……………………………………………………………………….36 Canis Major…………………………………………………………………..45 Canis Minor…………………………………………………………………..52 Lesson Plans………………………………………………………………….56 Coloring Book…………………………………………………………………….….57 Hand Angles……………………………………………………………………….…64 Constellation Research..…………………………………………………….……71 When and Where to View Orion…………………………………….……..…77 Angles For Locating Orion..…………………………………………...……….78 Overhead Projector Punch Out of Orion……………………………………82 Where on Earth is: Thrace, Lemnos, and Crete?.............................83 Appendix………………………………………………………………………86 Copyright©2003, Audio Visual Imagineering, Inc. 2 Legends of the Night Sky: Orion Educator’s Guide Introduction It is our belief that “Legends of the Night sky: Orion” is the best multi-grade (K – 8), multi-disciplinary education package on the market today. It consists of a humorous 24-minute show and educator’s package. The Orion Educator’s Guide is designed for Planetarians, Teachers, and parents. The information is researched, organized, and laid out so that the educator need not spend hours coming up with lesson plans or labs. This has already been accomplished by certified educators. The guide is written to alleviate the fear of space and the night sky (that many elementary and middle school teachers have) when it comes to that section of the science lesson plan. It is an excellent tool that allows the parents to be a part of the learning experience. The guide is devised in such a way that there are plenty of visuals to assist the educator and student in finding the Winter constellations. -
The Professor Comet's Report Late Summer/Early Autumn – September
The Professor Comet’s Report 1 Messier 71 and C/2009 P1 Garradd © Steve Grimsley of Houston Astronomical Society, 2011 Welcome to the comet report which is a monthly article on the observations of comets by the amateur astronomy community and comet hunters from around the world! This article is dedicated to the latest reports of available comets for observations, current state of those comets, future predictions, & projections for observations in comet astronomy! Late Summer/Early Autumn – September 2011 The Professor Comet’s Report 2 The Current Status of the Predominant Comets for July 2011! Comets Designation Orbital Magnitude Trend Observation Constellations Visibility (IAU – MPC) Status Visual (Range in Lat.) (Night Sky Location) Period Garradd 2009 P1 C 7.0 – 7.2 Getting 60°N – 60°S Between Sagitta and Vulpecula All Night Brighter (heading WNW towards Hercules) Honda – 45P P 8.0 Getting 50°N – 85°S Undergoing a wide retrograde motion! Early Morning Mrkos - Brighter Currently the comet is north of Hydra Pajdusakova heading NE towards Leo Elenin 2010 X1 C 8.6 – 9.4 Getting 45°N – 75°S Currently undergoing retrograde Early Evening Brighter motion in the S region of Leo (Just after Dusk) Crommelin 27P P 9.5 Possibly N/A Poor Elongation N/A Fading? (lost in the daytime glare!) LINEAR 2011 M1 C 10.4 Brightening 60°N – 45°N Moving SE of Ursa Major and All Night heading across the E edge of Leo Minor Hill 2010 G2 C 11.1 Fading 60°N – 10°N Between Ursa Major and Lynx All Night (Moving SSW of Muscida) Gibbs 2011 A3 C 11.4 Brightening 55°N -
1. (A) Give the Equation Which Represents Stefan's Law for a Black
PhysicsAndMathsTutor.com 1 1. (a) Give the equation which represents Stefan’s law for a black body source of radiation, defining the symbols used. ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... (3) (b) (i) The space probe Voyager I is travelling out of the solar system and is, at present, approximately 8000 × 106 km from the Sun. The power source on board is a nuclear generator providing 400 W. If this power had to be obtained from solar panels, calculate the area of the solar panels which would be necessary. power received on Earth from the Sun = 1400 Wm–2 distance of the Earth from the Sun = 150 × 106 km ........................................................................................................................... ........................................................................................................................... .......................................................................................................................... -
February 2018 BRAS Newsletter
Novemb Monthly Meeting Monday, February 12th at 7PM at HRPO er 2017 Issue nd (Monthly meetings are on 2 Mondays, Highland Road Park Observatory) . Program: Star Clusters, a presentation by Rory Bentley. What's In This Issue? President’s Message Secretary's Summary Outreach Report Light Pollution Committee Report Recent Forum Entries 20/20 Vision Campaign Messages from the HRPO Friday Night Lecture Series Globe at Night Adult Astronomy Courses International Astronomy Day Observing Notes – Canis Minor, The Little Dog & Mythology Like this newsletter? See past issues back to 2009 at http://brastro.org/newsletters.html Newsletter of the Baton Rouge Astronomical Society February 2018 © 2018 President’s Message We are now entering the month of February 2018. This month will be unusual for the fact there will be no full moon. This lack of a full moon can happen because the Moon's synodic orbit around Earth takes longer than the 28 days in February. I would remind you that our monthly meeting is on 12th of February at 7 pm. There will be a talk on star clusters given by Rory Bentley. I would also like to remind you of our Business Meeting which will be 7 pm on 7th of February at HRPO. We are investigating ideas which include: an asteroid observing group 2018 Officers: an astrophotography study group President: Steven M. Tilley a BRAS Youtube channel Vice-President: Scott Louque adding additional stargazes for BRAS members Secretary: Krista Reed ways to better utilize BRAS equipment Treasurer: Trey Anding adding another dark sky site BRAS Liaison for BREC: We may not do everything listed if there is not sufficient interest Chris Kersey from members, so if you are willing to help let us know. -
New Double Stars from Asteroidal Occultations, 1971 - 2008
Vol. 6 No. 1 January 1, 2010 Journal of Double Star Observations Page 88 New Double Stars from Asteroidal Occultations, 1971 - 2008 Dave Herald, Canberra, Australia International Occultation Timing Association (IOTA) Robert Boyle, Carlisle, Pennsylvania, USA Dickinson College David Dunham, Greenbelt, Maryland, USA; Toshio Hirose, Tokyo, Japan; Paul Maley, Houston, Texas, USA; Bradley Timerson, Newark, New York, USA International Occultation Timing Association (IOTA) Tim Farris, Gallatin, Tennessee, USA Volunteer State Community College Eric Frappa and Jean Lecacheux, Paris, France Observatoire de Paris Tsutomu Hayamizu, Kagoshima, Japan Sendai Space Hall Marek Kozubal, Brookline, Massachusetts, USA Clay Center Richard Nolthenius, Aptos, California, USA Cabrillo College and IOTA Lewis C. Roberts, Jr., Pasadena, California, USA California Institute of Technology/Jet Propulsion Laboratory David Tholen, Honolulu, Hawaii, USA University of Hawaii E-mail: [email protected] Abstract: Observations of occultations by asteroids and planetary moons can detect double stars with separations in the range of about 0.3” to 0.001”. This paper lists all double stars detected in asteroidal occultations up to the end of 2008. It also provides a general explanation of the observational method and analysis. The incidence of double stars with a separation in the range 0.001” to 0.1” with a magnitude difference less than 2 is estimated to be about 1%. Vol. 6 No. 1 January 1, 2010 Journal of Double Star Observations Page 89 New Double Stars from Asteroidal Occultations, 1971 - 2008 tions. More detail about the method of analysis is set Introduction out in the Appendix. Asteroids and planetary moons will naturally oc- cult many stars as they move through the sky. -
DOUBLE DOME1 I Issued by The
DOUBLE DOME1 i Issued by the MILWAUKEE ASTRONOMICAL SOCIETY - : MAY 1983 t - ÌY ELECTION MEETING: The May meeting will be in two parts. Some time will be taken up by an election of' board members and officers, and some time will be given to Dr. Paul Rybski o± University of Chicago's Yerkes Observatory. Dr. Rybski's talk is entitled "Charge Couple Devices - Their Uses in Contemporary Astronomy. ft Four officers and four board members will be elected. Candidates may be incumbents, nominees volunteers, or recommended members who have agreed to run. Directors serve three-year terms with a two-term limit. Officers serve for one year with unlimited re-election. Let's have a big turnout. Bring a friend and enjoy a good, informative speaker, arid do your duty to the MAS by electing qualified people to help shape the future of the Society. WHEN: Friday, May 20, 8 p.m. WHERE: UWM Physics Bldg., corner of Kenwood and Cramer, room 133. OPEN HOUSES are scheduled for June 17, July 1, 15, 29, August 12, 26, and September 9, all Friday nights. As in the past, each night will feature a different astronomical sub- ject pertaining to the heavens. The June 17 talk will cover eclipses. Since the New Berlin facilities will be open to the general public-- we can also expect the news media to be present--volunteers will be needed to assist the anticipated large crowds by operating 'scopes, guiding, minding the parking lots, or spelling other workers. Perhaps you'd like to give a talk apropos to the topic for that particular night. -
00E the Construction of the Universe Symphony
The basic construction of the Universe Symphony. There are 30 asterisms (Suites) in the Universe Symphony. I divided the asterisms into 15 groups. The asterisms in the same group, lay close to each other. Asterisms!! in Constellation!Stars!Objects nearby 01 The W!!!Cassiopeia!!Segin !!!!!!!Ruchbah !!!!!!!Marj !!!!!!!Schedar !!!!!!!Caph !!!!!!!!!Sailboat Cluster !!!!!!!!!Gamma Cassiopeia Nebula !!!!!!!!!NGC 129 !!!!!!!!!M 103 !!!!!!!!!NGC 637 !!!!!!!!!NGC 654 !!!!!!!!!NGC 659 !!!!!!!!!PacMan Nebula !!!!!!!!!Owl Cluster !!!!!!!!!NGC 663 Asterisms!! in Constellation!Stars!!Objects nearby 02 Northern Fly!!Aries!!!41 Arietis !!!!!!!39 Arietis!!! !!!!!!!35 Arietis !!!!!!!!!!NGC 1056 02 Whale’s Head!!Cetus!! ! Menkar !!!!!!!Lambda Ceti! !!!!!!!Mu Ceti !!!!!!!Xi2 Ceti !!!!!!!Kaffalijidhma !!!!!!!!!!IC 302 !!!!!!!!!!NGC 990 !!!!!!!!!!NGC 1024 !!!!!!!!!!NGC 1026 !!!!!!!!!!NGC 1070 !!!!!!!!!!NGC 1085 !!!!!!!!!!NGC 1107 !!!!!!!!!!NGC 1137 !!!!!!!!!!NGC 1143 !!!!!!!!!!NGC 1144 !!!!!!!!!!NGC 1153 Asterisms!! in Constellation Stars!!Objects nearby 03 Hyades!!!Taurus! Aldebaran !!!!!! Theta 2 Tauri !!!!!! Gamma Tauri !!!!!! Delta 1 Tauri !!!!!! Epsilon Tauri !!!!!!!!!Struve’s Lost Nebula !!!!!!!!!Hind’s Variable Nebula !!!!!!!!!IC 374 03 Kids!!!Auriga! Almaaz !!!!!! Hoedus II !!!!!! Hoedus I !!!!!!!!!The Kite Cluster !!!!!!!!!IC 397 03 Pleiades!! ! Taurus! Pleione (Seven Sisters)!! ! ! Atlas !!!!!! Alcyone !!!!!! Merope !!!!!! Electra !!!!!! Celaeno !!!!!! Taygeta !!!!!! Asterope !!!!!! Maia !!!!!!!!!Maia Nebula !!!!!!!!!Merope Nebula !!!!!!!!!Merope -
FY13 High-Level Deliverables
National Optical Astronomy Observatory Fiscal Year Annual Report for FY 2013 (1 October 2012 – 30 September 2013) Submitted to the National Science Foundation Pursuant to Cooperative Support Agreement No. AST-0950945 13 December 2013 Revised 18 September 2014 Contents NOAO MISSION PROFILE .................................................................................................... 1 1 EXECUTIVE SUMMARY ................................................................................................ 2 2 NOAO ACCOMPLISHMENTS ....................................................................................... 4 2.1 Achievements ..................................................................................................... 4 2.2 Status of Vision and Goals ................................................................................. 5 2.2.1 Status of FY13 High-Level Deliverables ............................................ 5 2.2.2 FY13 Planned vs. Actual Spending and Revenues .............................. 8 2.3 Challenges and Their Impacts ............................................................................ 9 3 SCIENTIFIC ACTIVITIES AND FINDINGS .............................................................. 11 3.1 Cerro Tololo Inter-American Observatory ....................................................... 11 3.2 Kitt Peak National Observatory ....................................................................... 14 3.3 Gemini Observatory ........................................................................................ -
Herschel Celestial Calibration Sources: Four Large Main-Belt Asteroids As
Experimental Astronomy manuscript No. (will be inserted by the editor) Herschel celestial calibration sources Four large main-belt asteroids as prime flux calibrators for the far-IR/sub-mm range Thomas M¨uller Zoltan´ Balog Markus Nielbock Tanya· Lim David Teyssier· Michael Olberg· Ulrich· Klaas Hendrik· Linz Bruno Altieri· Chris Pearson· George Bendo· Esa Vilenius · · · Received: date / Accepted: date Abstract Celestial standards play a major role in observational astrophysics. They are needed to characterise the performance of instruments and are paramount for photometric calibration. During the Herschel Calibration Asteroid Preparatory Pro- gramme approximately 50 asteroids have been established as far-IR/sub-mm/mm calibrators for Herschel. The selected asteroids fill the flux gap between the sub- mm/mm calibrators Mars, Uranus and Neptune, and the mid-IR bright calibration stars. All three Herschel instruments observed asteroids for various calibration pur- poses, including pointing tests, absolute flux calibration, relative spectral response function, observing mode validation, and cross-calibration aspects. Here we present newly established models for the four large and well characterized main-belt aster- oids (1) Ceres, (2) Pallas, (4) Vesta, and (21) Lutetia which can be considered as new prime flux calibrators. The relevant object-specific properties (size, shape, spin- properties, albedo, thermal properties) are well established. The seasonal (distance to T. M¨uller, E. Vilenius Max Planck Institute for Extraterrestrial Physics, PO Box 1312, Giessenbachstrasse, 85741 Garching, Germany Tel.: +49 89 30000-3499 E-mail: [email protected] Z. Balog, M. Nielbock, U. Klaas, H. Linz Max Planck Institute for Astronomy, K¨onigstuhl 17, 69117 Heidelberg, Germany T. -
Three Editions of the Star Catalogue of Tycho Brahe*
A&A 516, A28 (2010) Astronomy DOI: 10.1051/0004-6361/201014002 & c ESO 2010 Astrophysics Three editions of the star catalogue of Tycho Brahe Machine-readable versions and comparison with the modern Hipparcos Catalogue F. Verbunt1 andR.H.vanGent2,3 1 Astronomical Institute, Utrecht University, PO Box 80 000, 3508 TA Utrecht, The Netherlands e-mail: [email protected] 2 URU-Explokart, Faculty of Geosciences, Utrecht University, PO Box 80 115, 3508 TC Utrecht, The Netherlands 3 Institute for the History and Foundations of Science, PO Box 80 000, 3508 TA Utrecht, The Netherlands Received 6 January 2010 / Accepted 3 February 2010 ABSTRACT Tycho Brahe completed his catalogue with the positions and magnitudes of 1004 fixed stars in 1598. This catalogue circulated in manuscript form. Brahe edited a shorter version with 777 stars, printed in 1602, and Kepler edited the full catalogue of 1004 stars, printed in 1627. We provide machine-readable versions of the three versions of the catalogue, describe the differences between them and briefly discuss their accuracy on the basis of comparison with modern data from the Hipparcos Catalogue. We also compare our results with earlier analyses by Dreyer (1916, Tychonis Brahe Dani Scripta Astronomica, Vol. II) and Rawlins (1993, DIO, 3, 1), finding good overall agreement. The magnitudes given by Brahe correlate well with modern values, his longitudes and latitudes have error distributions with widths of 2, with excess numbers of stars with larger errors (as compared to Gaussian distributions), in particular for the faintest stars. Errors in positions larger than 10, which comprise about 15% of the entries, are likely due to computing or copying errors.