Next: A Coronagraphic Search for Up: NICMOS Science Previous: NICMOS Science . ... A search for previously unknown low-mass (giant planet and brown dwarf) companions to stars in the solar neighborhood, and circumstellar dust disks around main sequence stars by direct coronagraphic imaging has been undertaken by the NICMOS Instrument Definition Team (IDT). ... The problem in the target acquisition process resulted in degraded pointing and target centration performance for these observations. ...
... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...
... Printed in U.S.A. Measuring the Balmer Jump and the Effective Gravity in FGK Stars Michael S. Bessell Research School of Astronomy and Astrophysics, Australian National University, Mount Stromlo, Weston, Australia; bessell@mso.anu.edu.au Received 2006 October 17; accepted 2007 May 18; published 2007 June 21 ABSTRACT. ... Synthetic fl spectra for [Fe/H] p 2.5, 5750 K, and log g p 4.5, 3.5, 2.5. ... Synthetic spectra divided by an 11,800 K BB for [Fe/H] p 2.5, 6500 K, and log g p 4.5, 4.0, 2.5. ...
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Ссылки http://www.mso.anu.edu.au/~bessell/FTP/Oldspectrophotometry/bessell2007BJ.pdf -- 282.6 Кб -- 08.10.2007 Похожие документы
... Column Xvalue is number 3 status = 0 Column Avalue is number 1 status = 237 Column Lvalue is number 2 status = 237 Column Xvalue is number 3 status = 237 Column Bvalue is number 4 status = 237 Column Ivalue is number 5 status = 237 Column Jvalue is number 6 status = 237 Column Evalue is number 7 status = 237 Column Dvalue is ... UNDEFINED 4 4 4 4. ... Column 8 repeat and offset = 1 14 A ab 0 L 0 F T X 0 F T B 99 2 0 I 99 2 0 J 99 2 0 E 99. ...
Cloud cover and water vapor observed at Oma site,Tibet W ang Hong-shuai (National Astronomical Observatories of China) Kislovodsk 8.10.2010 Wang Hongshuai Kislovodsk Oct.2010 2 2008.11 Oma Site 40 m CT 2 tow er 4.5 m antenna Satellite communication w eather station 10m tow er SBIG seeing m onitor DIMM seeing dome MIR cloud m onitor R en ew al p o w er supply Wang Hongshuai Kislovodsk Oct.2010 3 PWV<0.5 5 .0 % 1 0 .1 % 8 .1 % Percent. ... 05 8.3% Percent . ...
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Ссылки http://site2010.sai.msu.ru/static/doc/WHongshuai_site2010.pdf -- 1237.0 Кб -- 20.10.2010 Похожие документы
... 000, 112 (2009) Printed 11 February 2010 A (MN L TEX style file v2.2) Analytical approximations of K -corrections in optical and near-infrared bands I1gor V. Chilingarian1 2 ,2,3 , Anne-Laure Melchior 1,4 and Ivan Yu. ... Received 2010 February 01; in original form 2009 August 14 ABSTRACT To compare photometric properties of galaxies at different redshifts, the fluxes need to be corrected for the changes of effective rest-frame wavelengths of filter bandpasses, called K -corrections. ... Table 1. ...
Data Flow System Document Title: Document Number: Issue: Date: Document Prepared by: Document Approved by: Document Reviewed by: Document Released by: Peter Bunclark & Simon Hodgkin (CASU) Mike Irwin (CASU Manager) William Sutherland (VISTA Project Scientist) Jim Emerson (VDFS Project leader) VISTA Infra Red Camera Calibration Plan VIS-SPE-IOA-20000-0002 1.4 pre 1 2006-11-13 Signature And date: Signature And date: Signature And date: Signature And date: DATA FLOW Calibration Plan SYSTEM VISTA Document:
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Ссылки http://www.vista.ac.uk/Files/docs/vdfs/Cal-Plan-draft_v1.4.pdf -- 648.5 Кб -- 20.04.2011 Похожие документы
... Сообщения без ответов . ... Последнее сообщение . ... k2s Перейти к последнему сообщению . ... Asya_Schtirlitz Перейти к последнему сообщению . ... DeZeRt Перейти к последнему сообщению . ... Последнее сообщение Re: Химия. ... Vasisualiy57 Перейти к последнему сообщению . ... Ане4ка Перейти к последнему сообщению . ... bootal Перейти к последнему сообщению . ... Последнее сообщение Re: Равноденствие 2010 . Capricornus Перейти к последнему сообщению . ... Dmitry Перейти к последнему сообщению . ...
... 5-GHz total flux density . ... 0.620 * = the position has been determined to an accuracy of 10 mas from the VLBApls data . VLBApls image at 5 GHz . color gif | contour gif | ... Correlated flux density (Jy) vs. projected baseline length plot . gif | ... flux density (Jy) . EW position (mas) . ... major axis (mas) . minor axis (mas) . position angle ( ) . ... 0.0 . ... 172 . ... VLBApls reference: Fomalont et al. 2000), ApJS, 131, 95-183 . VLBApls home page . ...
... Soc. 427, 790805 (2012) doi:10.1111/j.1365-2966.2012.21990.x Ages and abundances in large-scale stellar discs of nearby S0 galaxies O. K. Sil'chenko,1,2 I. S. Proshina,1 A. P. Shulga1 and S. E. Koposov 1 2 3 1,3 Sternberg Astronomical Institute of the Lomonosov Moscow State University, Moscow, Russia Isaac Newton Institute of Chile, Moscow Branch, Moscow, Russia Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 OHA Accepted 2012 August 23. ... S0s fading from spirals. ...
... 337, 275292 (2002) The correlation of line strength with luminosity and redshift from composite quasi-stellar object spectra S. M. Croom,1 K. Rhook,1 E. A. Corbett,1 B. J. Boyle,1 H. Netzer,2 N. S. Loaring,3 L ... We measure highly significant Baldwin effects for most broad emission lines (C IV 1549, C III] 1909, Mg II 2798, H ,H ) and show that they are predominantly caused by correlations with luminosity, not redshift. ... The correlations of log W with log(1 + z ) for each line. ...
The Official Publication of the Amateur Astronomers Association of Princeton Director Rex Parker ( 609 ) 730-0670 rex_a_parker@msn.com Assistant Director John Miller ( 609 ) 252-1223 jmiller@princetonastronomy.org Treasurer Program Chairman Brian VanLiew Ken Kremer (908) 281-7957 ( 609 ) 558-4955 bvanliew@sensingstrategies.com ken@princetonastronomy.org Secretary Ludy D'Angelo ( ... Our guest speaker will be Dr. Guy Consolmagno of the Vatican Observatory. ... Observatory and Springtime Galaxies. ...
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Ссылки http://www.princetonastronomy.org/newsletters/05_2007sidereal.pdf -- 674.1 Кб -- 02.05.2007 Похожие документы
Journal of the Amateur Astronomers Association of New York January 2010 Volume 58 Number 1, ISSN 0146-7662 EYEPIECE farther away from us than the Moon. ... As the year begins, the solar system's largest planet lies in the southwestern evening sky among the dim stars of Capricornus, setting four hours after the Sun. ... January 27 Mars closest to Earth. ... The planet-like object is at least 29 times as far from its star as the Earth is from the Sun, or about the distance between the Sun and Neptune. ...
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Ссылки http://www.aaa.org/EyepieceFiles/aaa/2010_01_January_Eyepiece.pdf -- 278.5 Кб -- 22.02.2015 Похожие документы
STAR FIELDS Newsletter of the Amateur Telescope Makers of Boston Including the Bond Astronomical Club Established in 1934 In the Interest of Telescope Making & Using Vol. ... Our clubhouse, star parties, and visits to dark sky sites give us the opportunity to get out and observe. ... Eileen Myers, President- This Month's Meeting.. ... Therefore our July ATMoB meeting will be held at the CfA, but in the Pratt Conference Room in the building named the Richard S. Perkin Laboratory for Astrophysics. ...