Recent Science Results with the Two-Telescope IOTA

Total Page:16

File Type:pdf, Size:1020Kb

Recent Science Results with the Two-Telescope IOTA PROCEEDINGS OF SPIE SPIEDigitalLibrary.org/conference-proceedings-of-spie Recent science results from the two- telescope IOTA Rafael Millan-Gabet, Ettore Pedretti, John D. Monnier, Wesley A. Traub, F. Peter Schloerb, et al. Rafael Millan-Gabet, Ettore Pedretti, John D. Monnier, Wesley A. Traub, F. Peter Schloerb, Nathaniel P. Carleton, Sam Ragland, Marc G. Lacasse, William C. Danchi, Peter G. Tuthill, Guy S. Perrin, Vincent Coude du Foresto, "Recent science results from the two-telescope IOTA," Proc. SPIE 4838, Interferometry for Optical Astronomy II, (21 February 2003); doi: 10.1117/12.459687 Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States Downloaded From: https://www.spiedigitallibrary.org/conference-proceedings-of-spie on 7/11/2018 Terms of Use: https://www.spiedigitallibrary.org/terms-of-use ÊeceÒØ ËcieÒce Êe×ÙÐØ× fÖÓÑ Øhe ÌÛÓ¹ÌeÐe×cÓÔ e ÁÇÌA a ae a a b ʺ ÅiÐÐaÒ¹Gab eØ ¸Eº ÈedÖeØØi ¸ º Dº ÅÓÒÒieÖ ¸ Ϻ Aº ÌÖaÙb ¸ Fº Ⱥ ËchÐÓ eÖb ¸ a a a ƺ Ⱥ CaÖÐeØÓÒ ¸ ˺ ÊagÐaÒd ¸ ź Gº Äaca××e ¸ c d g g Ϻ Cº DaÒchi ¸ Ⱥ Gº ÌÙØhiÐÐ ¸ Gº ÈeÖÖiÒ aÒd κ CÓÙde dÙ FÓÖe×ØÓ a ÀaÖÚaÖd¹ËÑiØh×ÓÒiaÒ CeÒØeÖ fÓÖ A×ØÖÓÔhÝ×ic׸ 6¼ GaÖdeÒ Ëغ¸ CaÑbÖidge¸ ÅA ¼¾½¿8¸ ÍËA b A×ØÖÓÒÓÑÝ DeÔaÖØÑeÒظ ÍÒiÚeÖ×iØÝ Óf Åa××achÙ×eØØ× aØ AÑheÖ×ظ AÑheÖ×Ø ÅA ¼½¼¼¿¸ ÍËA c ÆAËA GÓ ddaÖd ËÔace FÐighØ CeÒØeÖ¸ ÁÒfÖaÖed A×ØÖÓÔhÝ×ic׸ GÖeeÒbeÐظ ÅD ¾¼77½¸ ÍËA d A×ØÖÓÒÓÑÝ DeÔaÖØÑeÒظ ËchÓ ÓÐ Óf ÈhÝ×ic׸ ÍÒiÚeÖ×iØÝ Óf ËÝdÒeݸ ÆËÏ ¾¼¼6¸ AÙ×ØÖaÐia e Çb×eÖÚaØÓiÖe de ÀaÙØe ÈÖÓÚeÒce¸ FÖaÒce g Çb×eÖÚaØÓiÖe de ÈaÖi×¹ÅeÙdÓÒ¸ FÖaÒce ABËÌÊACÌ Ìhe ÁÇÌA ´ÁÒfÖaÖed ÇÔØicaÐ ÌeÐe×cÓÔ e AÖÖaݵ ha× b eeÒ ÖÓÙØiÒeÐÝ ÓÔ eÖaØiÒg ÛiØh ØÛÓ¹ØeÐe×cÓÔ e× ×iÒce ½994¸ a ½ ÑÓ de de×ØiÒed ØÓ b ecÓÑe Ób×ÓÐeØe fÓÐÐÓÛiÒg iØ× ÖeceÒØ cÓÒÚeÖ×iÓÒ ØÓ a ØhÖee¹ØeÐe×cÓÔ e aÖÖaݺ ÁÒ ØÛÓ¹ØeÐe×cÓÔ e ÑÓ de¸ Øhe ÁÇÌA ha× Ñade ÒÙÑeÖÓÙ× ×cieÒØi¬c aÒd ØechÒicaÐ cÓÒØÖibÙØiÓÒ׸ ×ee eºgº ÓÙÖ Ði×Ø Óf ÔÙbÐicaØiÓÒ× aØ hØØÔ:»»cfa¹ÛÛÛºhaÖÚaÖdºedÙ»cfa »Ó iÖ»ÁÇÌA»ÈÍBÄÁ»Ô ÙbÐica ØiÓÒ׺h ØÑк Ïe ÔÖe×eÒØ ÔÖeÐiÑiÒaÖÝ Öe×ÙÐØ× ÓÒ ØhÖee di«eÖeÒØ ØÓÔic× Ù×iÒg ÖeceÒØ daØa fÖÓÑ Øhe ØÛÓ¹ØeÐe×cÓÔ e ÁÇÌA: ´½µ Ñea×ÙÖeÑeÒØ× Óf ÅiÖa ×ØaÖ diaÑeØeÖ× ×iÑÙÐØaÒeÓÙ×ÐÝ iÒ ØhÖee di«eÖeÒØ ÒeaÖ¹iÒfÖaÖed ×Ô ecØÖaÐ baÒd׸ ´¾µ Ñea×ÙÖeÑeÒØ Óf Øhe chaÖacØeÖi×Øic ×iÞe aÒd ×haÔ e Óf Øhe ×ÓÙÖce Óf ÒeaÖ¹iÒfaÖed eÑi××iÓÒ iÒ Øhe ܹÖaÝ biÒaÖÝ ×Ý×ØeÑ CÁ CaѸ aÒd ´¿µ aÔ eÖØÙÖe ×ÝÒØhe×i× Óf Øhe CaÖb ÓÒ ×ØaÖ Î ÀÝdÖae cÓÑbiÒiÒg daØa fÖÓÑ Øhe ÁÇÌAaÒd fÖÓÑ aÔ eÖØÙÖe Ña×kiÒg aØ Øhe Ãeck¹Á ØeÐe×cÓÔ eº ÃeÝÛÓÖd×: ÁÇÌA¸ ÁÒØeÖfeÖÓÑeØeÖ¸ ÅiÖa¸ CaÖb ÓÒ¸ X¹ÖaÝ biÒaÖie׸ CÁ CaѸ Î ÀÝdÖae ½º ÅÍÄÌÁCÇÄÇÊ ÆEAʹÁÆFÊAÊED DÁAÅEÌEÊË ÇF ÅÁÊA ËÌAÊË ÅiÖa¸ ÓÖ ÐÓÒg Ô eÖiÓ d ÚaÖiabÐe ´ÄÈε¸ ×ØaÖ× aÖe highÐÝ eÚÓÐÚed cÓ ÓÐ ´¾¼¼¼¹¿¼¼¼ õ giaÒØ׺ ÌheÝ aÖe ÚeÖÝ ÐaÖge ¹ ×eÚeÖaÐ hÙÒdÖed ØiÑe× Øhe ÖadiÙ× Óf Øhe ËÙÒ¸ aÒd ÚeÖÝ ÐÙÑiÒÓÙ× ¹ ×eÚeÖaÐ ØhÓÙ×aÒd ØiÑe× Øhe ÐÙÑiÒÓ×iØÝ Óf Øhe ËÙÒº ÅiÖa× ÔÙÐ×aØe ÛiØh ØÝÔicaÐ Ô eÖiÓ d× Óf ab ÓÙØ ÓÒe ÝeaÖº A× ØheÝ eÜÔaÒd¸ ÅiÖa× b ecÓÑe Úi×ÙaÐÐÝ faiÒØeÖ¸ ØheiÖ ×Ô ecØÖÙÑ ×hifØ× ØÓ ÐaØeÖ ØÝÔ e׸ aÒd Øhe ÔÖÓÔ eÖØie× Óf ÑÓÐecÙÐe aÒd dÙ×Ø fÓÖÑaØiÓÒ iÒ ØheiÖ eÜØeÒded cÓ ÓÐ aØÑÓ×ÔheÖe× chaÒge׺ De×ÔiØe ÑÙch Ób×eÖÚaØiÓÒaÐ aÒd ØheÓÖeØicaÐ ÛÓÖk¸ ÑaÒÝ fÙÒdaÑeÒØaÐ a×Ô ecØ× Óf ÅiÖa aØÑÓ×ÔheÖe ÔhÝ×ic× ÖeÑaiÒ ÙÒkÒÓÛÒº Ìhe deØeÖÑiÒaØiÓÒ Óf ØheiÖ ×iÞe× aÒd ×haÔ e׸ aÒd Øhe ÚaÖiaØiÓÒ Óf Øhe×e ÕÙaÒØiØie× ÓÚeÖ ØiÑe aÒd ÛaÚeÐeÒgØh aÖe Óf fÙÒdaÑeÒØaÐ iÑÔ ÓÖØaÒce¸ aÒd caÒ b e diÖecØÐÝ Ñea×ÙÖed ÛiØh ÐÓÒg ba×eÐiÒe iÒØeÖfeÖÓÑeØeÖ׺ ÁÒ aÒ Ób×eÖÚiÒg caÑÔaigÒ b eØÛeeÒ ½997¹½999¸ Øhe ÁÇÌA ÓbØaiÒed iÒØeÖfeÖÓÑeØÖic Ñea×ÙÖeÑeÒØ× iÒ Øhe ÒeaÖ¹ iÒfÖaÖed Óf a ÐaÖge ×aÑÔÐe Óf ÅiÖa ×ØaÖ׺ Ìhe ×Ô ecØÖaÐ cÓÚeÖage iÒ Øhe ×aÑÔÐe i× iÑÔ ÓÖØaÒØ iÒ ÓÖdeÖ ØÓ cÓÒ×ØÖaiÒ Øhe aØÑÓ×ÔheÖic ÔhÝ×ic× iÒ Øhe×e ×ØaÖ׺ ÇÙÖ ÔÖeÐiÑiÒaÖÝ Öe×ÙÐØ׸ iÒ Øhe fÓÖÑ Óf ×ØeÐÐaÖ diaÑeØeÖ e×ØiÑaØe× aØ each baÒd aÖe ÔÖe×eÒØed¸ fÓÖ Øhe ×Ùb×eØ Óf ÅiÖa× ÛhichÛeÖe Ñea×ÙÖed aØ aÐÐ ØhÖee ¸ À aÒd ó baÒd׺ A× ×hÓÛÒ iÒ Øhe ÖeÔÖe×eÒØaØiÚe ×Ô ecØÖa iÒ Figº ½ ´ØÓÔ: ÑaÜiÑÙÑ Ðighظ b ÓØØÓÑ: ÑiÒiÑÙÑ Ðighص¸ Øhe bÖÓad¹ baÒd ¬ÐØeÖ× Ù×ed eÒcÓÑÔa×× ×ØÖÓÒg ÑÓÐecÙÐaÖ baÒd× Óf ×Ô ecie× ×Ùcha×À Ǹ CǸ ÌiǸ ÎÇ aÒd ÇÀº Ìhi× ¬gÙÖe ¾ aÐ×Ó iÐÐÙ×ØÖaØe× hÓÛ Øhe aÑÓÙÒØ Óf ÑÓÐecÙÐaÖ ab×ÓÖÔØiÓÒ chaÒge× ×ØÖÓÒgÐÝ a× a fÙÒcØiÓÒ Óf ÔÙÐ×aØiÓÒaÐ Ôha×eº Ïe haÚe e×ØabÐi×hed Øhe ÑeaÒ diaÑeØeÖ ÖaØiÓ× aØ Øhe×e ØhÖee baÒd׸ aÒd Ñea×ÙÖed a cÓÖÖeÐaØiÓÒ ÛiØh ÔÙÐ×aØiÓÒaÐ Ôha×eº ËeÒd cÓÖÖe×Ô ÓÒdeÒce ØÓ ÊºÅºG: ÖÑiÐÐaÒ@cfaºhaÖÚaÖdºedÙ 202 Interferometry for Optical Astronomy II, Wesley A. Traub, Editor, Proceedings of SPIE Vol. 4838 (2003) © 2003 SPIE · 0277-786X/03/$15.00 Downloaded From: https://www.spiedigitallibrary.org/conference-proceedings-of-spie on 7/11/2018 Terms of Use: https://www.spiedigitallibrary.org/terms-of-use JH K’ FigÙÖe ½º ÊeÔÖe×eÒØaØiÚe ÅiÖa ×Ô ecØÖa ´ØakeÒ fÖÓÑ Êefº ¾µ¸ iÐÐÙ×ØÖaØiÒg Øhe ÐÓ caØiÓÒ Óf ÓÙÖ ×Ô ecØÖaÐ ¬ÐØeÖ× ÛiØh Öe×Ô ecØ ØÓ ÑÓÐecÙÐaÖ feaØÙÖe׸ aÒd Øhe dÖaÑaØic chaÒge× iÒ ×Ô ecØÖÙÑ ÛiØh ÔÙÐ×aØiÓÒaÐ Ôha×eº ½º½º Çb×eÖÚaØiÓÒ× aÒd AÒaÐÝ×i× Ìhe Ób×eÖÚaØiÓÒ× ÔÖe×eÒØed heÖe ÛeÖe caÖÖied ÓÙØ aØ Øhe ÁÇÌA iÒØeÖfeÖÓÑeØeÖ ÓÚeÖ Øhe ÔeÖiÓd ½997¹½999º ÁÒ Øhi× eÜÔ eÖiÑeÒظ Øhe ÁÇÌA Ûa× ÓÔ eÖaØed iÒ iØ× ØÛÓ¹ØeÐe×cÓÔ e cÓÒ¬gÙÖaØiÓÒ¸ Ù×iÒg ØÛÓ di«eÖeÒØ ba×eÐiÒe× Óf aÔÔÖÓÜiÑaØe ÐeÒgØh× ¾½ Ñ aÒd ¿8 Ѻ ÇÙÖ fÙÐÐ ×aÑÔÐe cÓÒ×i×Ø× Óf ¾8 ÅiÖa ×ØaÖ׸ Óf Ûhich Ûe ÔÖe×eÒØ heÖe ÔÖeÐiÑiÒaÖÝ Öe×ÙÐØ× fÓÖ a ×Ùb×aÑÔÐe Óf ½¿ ×ØaÖ× ØhaØ ÛeÖe Ñea×ÙÖed aØ aÐÐ ØhÖee  ´ =½:¾5Ñ; ¡ =¼:¾8ѵ¸ ¼ ¼ À´ =½:65Ñ; ¡ =¼:¿¼ÑµaÒdà ´ =¾:½6Ñ; ¡ =¼:¿¾Ñµ baÒd׺ FÓÖ Øhe×e Ób×eÖÚaØiÓÒ׸ Øhe ØÛÓ ¼ ¼ ÁÇÌA b eaÑ× ÛeÖe cÓÑbiÒed iÒ Øhe ÔÙÔiÐ ÔÐaÒe¸ aØ a bÙÐk¹ÓÔØic× b eaÑ ×ÔÐiØØeÖº Ïe caÐÐ Øhi× ÓÙÖ \cÐa××icaÐ" b eaÑ cÓÑbiÒaØiÓÒ ×cheÑe¸ ØÓ di×ØiÒgÙi×h iØ fÖÓÑ ÓØheÖ b eaÑ cÓÑbiÒeÖ× aÚaiÐabÐe aØ Øhe ÁÇÌA Ûhich eÑÔÐÓÝ ×iÒgÐe¹ ÑÓ de ¬b eÖ× aÒd cÓÙÔÐeÖ× ´FÄÍÇÊ ×ee eºgº Êefº 5¸ ËÅAÊÌ ×ee eºgº Êefº 8µ ÓÖ iÒØegÖaØed ÓÔØic× cÓÑÔ ÓÒeÒØ× ´ÁÇÆÁC ×ee eºgº Êef 6µº Ìhe iÒ×ØÖÙÑeÒØaÐ ×eØÙÔ aÒd daØa ÖedÙcØiÓÒ ØechÒiÕÙe× haÚe b eeÒ ÔÖeÚiÓÙ×ÐÝ de×cÖib ed iÒ Êef׺ ¿¸ 4º ½º¾º Êe×ÙÐØ× aÒd CÓÒcÐÙ×iÓÒ× Ìhe Úi×ibiÐiØÝ daØa fÓÖ Øhe ×aÑÔÐe ×ØaÖ× aÖe ×hÓÛÒ iÒ Figº ¾¸ ÛheÖe each ÔaÒeÐ cÓÒØaiÒ× daØa aÒd ÙÒifÓÖÑ di×k ÑÓ deÐ ¬Ø׸ aØ Øhe ØhÖee baÒd׸ fÓÖ a ×iÒgÐe ×ØaÖ aÒd eÔ Ó chº Ìhe Öe×ÙÐØ× aÖe ×ÙÑÑaÖiÞed iÒ ÌabÐe ½¸ Ûhich ×hÓÛ× Øhe ÙÒifÓÖÑ di×k diaÑeØeÖ× fÓÙÒd aØ each baÒdº Ïe ÒÓØe ØhaØ aÐØhÓÙgh iÒ ÖeaÐiØÝ ÅiÖa aØÑÓ×ÔheÖe× aÖe ÐikeÐÝ ÒÓØ ØÓ b e ÛeÐÐ ÖeÔÖe×eÒØed bÝ a ÙÒifÓÖÑ di×k ÑÓ deи Øhi× ÛiÐÐ ÒÓØ a«ecØ ÓÙÖ Öe×ÙÐØ× ×igÒi¬caÒØÐÝ giÚeÒ Øhe ÖeÐaØiÚeÐÝ high Úi×ibiÐiØie× Ñea×ÙÖed bÝ ÓÙÖ ba×eÐiÒe׺ Ìhe×e Öe×ÙÐØ× aÖe Øhe ¬Ö×Ø Ñea×ÙÖeÑeÒØ× Óf ÅiÖa ÑeaÒ diaÑeØeÖ ÖaØiÓ× aØ ØhÓ×e baÒd׸ aÒd ÔÖÓÚide cÖiØicaÐ iÒfÓÖÑaØiÓÒ fÓÖ ÑÓ deÐeÖ× Óf ×ØeÐÐaÖ aØÑÓ×ÔheÖe׺ FÓÖ ÅiÖa× iÒ Øhe ÒaÖÖÓÛ ×Ô ecØÖaÐ ÖaÒge Å6»Å7¸ Ûe ¬Òd: ¯ ÇÒ aÚeÖage:  DiaÑeØeÖ < À DiaÑeØeÖ < à DiaÑeØeÖ ¯ ¹baÒd » À¹baÒd ÑeaÒ DiaÑeØeÖ ÖaØiÓ ³ ¼º95 ¯ À¹baÒd » ùbaÒd ÑeaÒ DiaÑeØeÖ ÖaØiÓ ³ ¼º86 ÅÓÖeÓÚeÖ¸ iØ ha× b eeÒ aÒ eÐÙ×iÚe gÓaÐ fÓÖ ÓÔØicaÐ iÒØeÖfeÖÓÑeØeÖ× ØÓ cÐeaÖÐÝ e×ØabÐi×h ØhaØ Øhe ÒeaÖ¹iÒfÖaÖed baÒd diaÑeØeÖ× chaÒge cÓheÖeÒØÐÝ ÛiØh Øhe ÔÙÐ×aØiÓÒaÐ Ô eÖiÓ d ´×ee hÓÛeÚeÖ ÖeceÒØ ÔÖÓgÖe×× Ù×iÒg ÒaÖÖÓÛchaÒÒeÐ× 9 iÒ×ide ùbaÒd fÖÓÑ Øhe ÈaÐÓÑaÖ Ìe×Øb ed ÁÒØeÖfeÖÓÑeØeÖ µº Ïe ×ee cÐeaÖ eÚideÒce fÓÖ Øhe×e Ôha×e¹cÓheÖeÒØ ×iÞe chaÒge× iÒ ÓÙÖ daØa¸ Ù×iÒg diaÑeØeÖ ÖaØiÓ׸Ûhich aÖe ÖeÐaØiÚeÐÝ iÒ×eÒ×iØiÚeØÓÑaÒÝ ×ÓÙÖce× Óf ×Ý×ØeÑaØic eÖÖÓÖº ¼ ¼ ËØaØi×ØicaÐÐݸ Øhe diaÑeØeÖ ÖaØiÓ× aÖe ×eeÒ ØÓ ÚaÖÝ ÛiØh aÑÔÐiØÙde× Óf ½¾±¸ ½5± aÒd ½¾± fÓÖ Â»À¸ À»Ã aÒd Ȉ Öe×Ô ecØiÚeÐݺ Ìhi× ÚaÖiaØiÓÒ ×Ùgge×Ø× ØhaØ Øhe dÓÑiÒaÒØ ÑÓÐecÙÐaÖ ab×ÓÖÔØiÓÒ feaØÙÖe× aÖe ÐÓ caØed aØ di«eÖeÒØ heighØ× iÒ Øhe aØÑÓ×ÔheÖe aÒd Öe×Ô ÓÒd ØÓ Øhe ÔÙÐ×aØiÓÒ aØ di«eÖeÒØ ØiÑe׺ ¼ ÁÒ fÙØÙÖe ÛÓÖk¸ Ûe ÛiÐÐ aÒaÐÝÞe Øhe cÓÑÔÐeØe ×eØ Óf À»Ã diaÑeØeÖ Ñea×ÙÖeÑeÒØ׸ ØÓ fÙÖØheÖ ÔÖÓb e Øhe ¼ diaÑeØeÖ¹ÖaØiÓ Ú׺ ÔÙÐ×aØiÓÒ¹Ôha×e ÖeÐaØiÓÒ×hiÔº Ïe aÐ×Ó haÚe a ÔÖÓgÖaÑ ØÓ ØÖack Øhe ¸ À¸ aÒd à diaÑeØeÖ× Proc. of SPIE Vol. 4838 203 Downloaded From: https://www.spiedigitallibrary.org/conference-proceedings-of-spie on 7/11/2018 Terms of Use: https://www.spiedigitallibrary.org/terms-of-use fÓÖ iÒdiÚidÙaÐ ×ÓÙÖce× ÓÚeÖ ØheiÖ eÒØiÖe ÔÙÐ×aØiÓÒ cÝcÐeº FiÒaÐÐݸ ÛiØh b eØØeÖ ba×eÐiÒe cÓÚeÖage ´ÔÖÓÚided bÝ ÓÙÖ ÒeÛ ¿¹ØeÐe×cÓÔ e caÔabiÐiØݵ¸ Ûe ÔÐaÒ ØÓ Ñea×ÙÖe hÓÛ Øhe ÐiÑb¹daÖkeÒed ÔÖÓ¬Ðe× ÚaÖÝ ÛiØh ÔÙÐ×aØiÓÒaÐ Ôha×e¸ ½¼ aÒd bÝ addiÒgaÐÓÛ Öe×ÓÐÙØiÓÒ ×Ô ecØÖÓgÖaÔh ØÓ ÓÙÖ iÒfÖaÖed iÒ×ØÖÙÑeÒØaØiÓÒ¸ Ûe ÛiÐÐ b e abÐe ØÓ Ñake Øhe×e Ñea×ÙÖeÑeÒØ× b ÓØh iÒ aÒd ÓÙØ Óf ×Ô ecØÖaÐ feaØÙÖe׺ ÁÒ cÓÒcÐÙ×iÓÒ¸ iÒfÖaÖed iÒØeÖfeÖÓÑeØÖÝ i× ÔÖÓÚidiÒg a diÚeÖ×e ×eØ Óf ÑÙÐØi¹ÛaÚeÐeÒgØh diaÑeØeÖ Ñea×ÙÖeÑeÒØ× ½½¸ ½¾ ½5 iÒ Øhe Úi×ibÐe¸ ÒeaÖ¹iÒfÖaÖed ´Øhi× ÛÓÖk aÒd eºgº Êef׺ ½¿¸ ½4µ¸ aÒd Ñid¹iÒfÖaÖedº CÙÖÖeÒØ aØÑÓ×ÔheÖic ÑÓ deÐ× dÓ ÒÓØ ÕÙaÐiØaØiÚeÐÝ agÖee ÛiØh ÛeÐйe×ØabÐi×hed Öe×ÙÐØ׺ ÁØ i× ØheÖefÓÖe cÖÙciaÐ ØÓ cÓÒØiÒÙe Øhi× ÛÓÖk iÒ ½6 cÓÐÐab ÓÖaØiÓÒ ÛiØh ÑÓ deÐeÖ× ØÓ iÒÚeÖØ Øhe×e daØa iÒ ÓÖdeÖ ØÓ deØeÖÑiÒe Øhe ÑÓÐecÙÐaÖ ×ØÖaØi¬caØiÓÒ Óf Øhe ×ØeÐÐaÖ aØÑÓ×ÔheÖe׸ aÒd ÙÐØiÑaØeÐÝ iÑÔÖÓÚe Øhe ×ØeÐÐaÖ aØÑÓ×ÔheÖe ÑÓ deÐ× aÒd iÒØeÖfeÖÓÑeØÖÝ Ób×eÖÚiÒg ×ØÖaØegie׺ ÌabÐe ½º ÅiÖa ÙÒifÓÖÑ di×k ´ÍDµ diaÑeØeÖ Öe×ÙÐØ× ´Ña×µ aÒd eÖÖÓÖ× fÓÖ each ×ØaÖ¸ aØ each baÒd aÒd eÔ Ó chº ÌaÖgeØ EÔÓch ͺDº  ͺDº À ͺDº à ÊAÒd ¾45¼774º¼ 6º68 ¼º¼ 6º65 ¼º¾ 5º76 ¼º¿ Z CeØ ¾45½½¾¾º¼ ¾º6½ ¼º½ ¿º48 ¼º½ ¿º½¾ ¼º4 ÍÈeÖ ¾45¼77¾º¼ 4º99 ¼º½ 5º¿8 ¼º½ 6º5½ ¼º¾ ÍÈeÖ ¾45½¼88º¼ ¾º½¿ ¼º6 ¿º88 ¼º¿ 5º44 ¼º4 ÊÈeÖ ¾45½¼89º¼ < ¼º¼¼ | < ¼º¼¼ | < ¼º¼¼ | ÊÈeÖ ¾45½½¾¿º¼ < ¼º¼¼ | ½º½4 ¼º5 < ½º¼¼ | Ê AÙÖ ¾45¼7¿4º¼ ½½º¼6 ¼º½ ½¼º49 ¼º¾ ½6º½8 ¼º¾ XAÙÖ ¾45¼7¿6º¼ < ½º¼¼ | < ¼º¼¼ | < ¿º¼¼ | Ê ÄÑi ¾45¼87¿º¼ ½¾º49 ¼º¼ ½¾º85 ¼º¾ ½4º½¾ ¼º¾ ÊÀÝa ¾45¼87¿º¼ ½8º84 ¼º½ ¾¼º½¿ ¼º¿ ¾5º4½ ¼º¾ ÊÀÝa ¾45¼875º¼ ¾¼º¿¾ ¼º½ ¾¾º¼4 ¼º¿ ¾7º4¼ ¼º¾ ÊËeÖ ¾45¼875º¼ 7º5¼ ¼º½ 8º4¼ ¼º7 ½¼º¿9 ¼º4 ËCÖb ¾45¼874º¼ 9º¾4 ¼º¾ 8º95 ¼º4 9º¿¼ ¼º4 ÊË Äib ¾45¼87¿º¼ 9º85 ¼º4 9º¼7 ¼º8 9º¾¾ ½º½ ËÈeg ¾45½¼87º¼ 4º¼9 ¼º½ 5º¼7 ¼º¿ 4º87 ¼º5 Ê AÕÖ ¾45¼7¿9º¼ ½7º69 ¼º¾ ½7º78 ¼º½
Recommended publications
  • Exploration of the Moon
    Exploration of the Moon The physical exploration of the Moon began when Luna 2, a space probe launched by the Soviet Union, made an impact on the surface of the Moon on September 14, 1959. Prior to that the only available means of exploration had been observation from Earth. The invention of the optical telescope brought about the first leap in the quality of lunar observations. Galileo Galilei is generally credited as the first person to use a telescope for astronomical purposes; having made his own telescope in 1609, the mountains and craters on the lunar surface were among his first observations using it. NASA's Apollo program was the first, and to date only, mission to successfully land humans on the Moon, which it did six times. The first landing took place in 1969, when astronauts placed scientific instruments and returnedlunar samples to Earth. Apollo 12 Lunar Module Intrepid prepares to descend towards the surface of the Moon. NASA photo. Contents Early history Space race Recent exploration Plans Past and future lunar missions See also References External links Early history The ancient Greek philosopher Anaxagoras (d. 428 BC) reasoned that the Sun and Moon were both giant spherical rocks, and that the latter reflected the light of the former. His non-religious view of the heavens was one cause for his imprisonment and eventual exile.[1] In his little book On the Face in the Moon's Orb, Plutarch suggested that the Moon had deep recesses in which the light of the Sun did not reach and that the spots are nothing but the shadows of rivers or deep chasms.
    [Show full text]
  • Eyes Skies Full En.Pdf
    1 00:00:05,240 --> 00:00:08,800 By taking our sense of sight far beyond the realm of our forebears' 2 00:00:08,880 --> 00:00:13,200 imagination, these wonderful instruments, the telescopes, open the way to 3 00:00:13,280 --> 00:00:17,240 a deeper and more perfect understanding of nature. - René Descartes, 1637 4 00:00:17,720 --> 00:00:22,520 For millennia mankind gazed out into the mesmerising night sky 5 00:00:22,600 --> 00:00:28,320 without recognising the stars of our own Milky Way Galaxy as other suns 6 00:00:28,400 --> 00:00:33,400 or the billions of sister galaxies making up the rest of our Universe 7 00:00:35,440 --> 00:00:38,760 or that we are merely punctuation in the Universe’s 8 00:00:38,840 --> 00:00:42,480 13.7 billion year-long story. 9 00:00:42,560 --> 00:00:46,080 With only our eyes as observing tools we had no means of 10 00:00:46,160 --> 00:00:50,120 finding solar systems around other stars, or of determining 11 00:00:50,200 --> 00:00:55,000 whether life exists elsewhere in the Universe. 12 00:00:58,080 --> 00:01:00,320 Today we are well on our way to unravelling many of the 13 00:01:00,400 --> 00:01:03,520 mysteries of the Universe, living in what may be the most remarkable 14 00:01:03,600 --> 00:01:05,920 age of astronomical discovery.
    [Show full text]
  • Australian Sky & Telescope
    TRANSIT MYSTERY Strange sights BINOCULAR TOUR Dive deep into SHOOT THE MOON Take amazing as Mercury crosses the Sun p28 Virgo’s endless pool of galaxies p56 lunar images with your smartphone p38 TEST REPORT Meade’s 25-cm LX600-ACF P62 THE ESSENTIAL MAGAZINE OF ASTRONOMY Lasers and advanced optics are transforming astronomy p20 HOW TO BUY THE RIGHT ASTRO CAMERA p32 p14 ISSUE 93 MAPPING THE BIG BANG’S COSMIC ECHOES $9.50 NZ$9.50 INC GST LPI-GLPI-G LUNAR,LUNAR, PLANETARYPLANETARY IMAGERIMAGER ANDAND GUIDERGUIDER ASTROPHOTOGRAPHY MADE EASY. Let the LPI-G unleash the inner astrophotographer in you. With our solar, lunar and planetary guide camera, experience the universe on a whole new level. 0Image Sensor:'+(* C O LOR 0 Pixel Size / &#*('+ 0Frames per second/Resolution• / • / 0 Image Format: #,+$)!&))'!,# .# 0 Shutter%,*('#(%%#'!"-,,* 0Interface: 0Driver: ASCOM compatible 0GuiderPort: 0Color or Monochrome Models (&#'!-,-&' FEATURED DEALERS: MeadeTelescopes Adelaide Optical Centre | www.adelaideoptical.com.au MeadeInstrument The Binocular and Telescope Shop | www.bintel.com.au MeadeInstruments www.meade.com Sirius Optics | www.sirius-optics.com.au The device to free you from your handbox. With the Stella adapter, you can wirelessly control your GoTo Meade telescope at a distance without being limited by cord length. Paired with our new planetarium app, *StellaAccess, astronomers now have a graphical interface for navigating the night sky. STELLA WI-FI ADAPTER / $#)'$!!+#!+ #$#)'#)$##)$#'&*' / (!-')-$*')!($%)$$+' "!!$#$)(,#%',).( StellaAccess app. Available for use on both phones and tablets. /'$+((()$!'%!#)'*")($'!$)##!'##"$'$*) stars, planets, celestial bodies and more /$,'-),',### -' ($),' /,,,$"$')*!!!()$$"%)!)!($%( STELLA is controlled with Meade’s planetarium app, StellaAccess. Available for purchase for both iOS S and Android systems.
    [Show full text]
  • Messenger-No117.Pdf
    ESO WELCOMES FINLANDINLAND AS ELEVENTH MEMBER STAATE CATHERINE CESARSKY, ESO DIRECTOR GENERAL n early July, Finland joined ESO as Education and Science, and exchanged which started in June 2002, and were con- the eleventh member state, following preliminary information. I was then invit- ducted satisfactorily through 2003, mak- II the completion of the formal acces- ed to Helsinki and, with Massimo ing possible a visit to Garching on 9 sion procedure. Before this event, howev- Tarenghi, we presented ESO and its scien- February 2004 by the Finnish Minister of er, Finland and ESO had been in contact tific and technological programmes and Education and Science, Ms. Tuula for a long time. Under an agreement with had a meeting with Finnish authorities, Haatainen, to sign the membership agree- Sweden, Finnish astronomers had for setting up the process towards formal ment together with myself. quite a while enjoyed access to the SEST membership. In March 2000, an interna- Before that, in early November 2003, at La Silla. Finland had also been a very tional evaluation panel, established by the ESO participated in the Helsinki Space active participant in ESO’s educational Academy of Finland, recommended Exhibition at the Kaapelitehdas Cultural activities since they began in 1993. It Finland to join ESO “anticipating further Centre with approx. 24,000 visitors. became clear, that science and technology, increase in the world-standing of ESO warmly welcomes the new mem- as well as education, were priority areas Astronomy in Finland”. In February 2002, ber country and its scientific community for the Finnish government. we were invited to hold an information that is renowned for its expertise in many Meanwhile, the optical astronomers in seminar on ESO in Helsinki as a prelude frontline areas.
    [Show full text]
  • Vireo Manual.Pdf
    VIREO: The Virtual Educational Observatory 1 VIREO: THE VIRTUAL EDUCATIONAL OBSERVATORY Software Reference Guide A Manual to Accompany Software Document SM 20: Circ.Version 1.0 Department of Physics Gettysburg College Gettysburg, PA 17325 Telephone: (717) 337-6028 email: [email protected] Software, and Manuals prepared by: Contemporary Laboratory Glenn Snyder and Laurence Marschall (CLEA PROJECT, Gettysburg College) Experiences in Astronomy VIREO: The Virtual Educational Observatory 2 Contents Introduction To Vireo: The Virtual Educational Observatory .................................................................................. 3 Starting Vireo ................................................................................................................................................................ 4 The Virtual Observatory Control Screen ..................................................................................................................... 4 Using an Optical Telescope ........................................................................................................................................... 5 Using the Photometer .................................................................................................................................................... 8 Using the Spectrometer ............................................................................................................................................... 11 Using the Multi-Channel Spectrometer .....................................................................................................................
    [Show full text]
  • Astronomy Alphabet
    Astronomy Alphabet Educational video for children Teacher https://vimeo.com/77309599 & Learner Guide This guide gives background information about the astronomy topics mentioned in the video, provides questions and answers children may be curious about, and suggests topics for discussion. Alhazen A Alhazen, called the Father of Optics, performed NASA/Goddard/Lunar Reconnaissance Orbiter, Apollo 17 experiments over a thousand years ago Can you find Alhazen crater when you look at the Moon? to learn about how light travels and Why does the Moon look bigger near the behaves. He also studied astronomy, horizon? separated light into colors, and sought to Believe it or not, scientists still don’t know for sure why explain why the Moon looks bigger near we perceive the Moon to be larger when it lies near to the the horizon. horizon. Though photos of the Moon at different points in the sky show it to be the same size, we humans think we I’ve never heard of Abu Ali al-Hasan ibn al- see something quite different. Try this experiment yourself Hasan ibn al-Hatham (Alhazen). sometime! One possibility is that objects we see next to the Tell me more about him. Moon when it’s near to them give us the illusion that it’s We don’t know that much about Alhazen be- bigger, because of a sense of scale and reference. cause he lived so long ago, but we do know that he was born in Persia in 965. He wrote hundreds How many craters does the Moon have, and what of books on math and science and pioneered the are their names? scientific method of experimentation.
    [Show full text]
  • Star-Birth Myth 'Busted' (W/ Podcast) 25 August 2009
    Star-birth myth 'busted' (w/ Podcast) 25 August 2009 The different numbers of stars of different masses at birth is called the ‘initial mass function’ (IMF). Most of the light we see from galaxies comes from the highest mass stars, while the total mass in stars is dominated by the lower mass stars. By measuring the amount of light from a population of stars, and making some corrections for the stars’ ages, astronomers can use the IMF to False-colour images of two galaxies, NGC 1566 (left) estimate the total mass of that population of stars. and NGC 6902 (right), showing their different proportions of very massive stars. Regions with massive O stars Results for different galaxies can be compared only show up as white or pink, while less massive B stars if the IMF is the same everywhere, but Dr Meurer’s appear in blue. NGC 1566 is much richer in O stars than team has shown that this ratio of high-mass to low- is NGC 6902. The images combine observations of UV mass newborn stars differs between galaxies. emission by NASA's Galaxy Evolution Explorer spacecraft and H-alpha observations made with the For instance, small 'dwarf' galaxies form many Cerro Tololo Inter-American Observatory (CTIO) telescope in Chile. NGC 1566 is 68 million light years more low-mass stars than expected. away in the southern constellation of Dorado. NGC 6902 is about 33 million light years away in the constellation To arrive at this finding, Dr Meurer’s team used Sagittarius. Photo by: NASA/JPL-Caltech/JHU galaxies from the HIPASS Survey (HI Parkes All Sky Survey) done with CSIRO’s Parkes radio telescope.
    [Show full text]
  • Science Programs for a 2-M Class Telescope at Dome C, Antarctica: PILOT, the Pathfinder for an International Large Optical Telescope
    CSIRO PUBLISHING www.publish.csiro.au/journals/pasa Publications of the Astronomical Society of Australia, 2005, 22, 199–235 Science Programs for a 2-m Class Telescope at Dome C, Antarctica: PILOT, the Pathfinder for an International Large Optical Telescope M. G. BurtonA,M, J. S. LawrenceA, M. C. B. AshleyA, J. A. BaileyB,C, C. BlakeA, T. R. BeddingD, J. Bland-HawthornB, I. A. BondE, K. GlazebrookF, M. G. HidasA, G. LewisD, S. N. LongmoreA, S. T. MaddisonG, S. MattilaH, V. MinierI, S. D. RyderB, R. SharpB, C. H. SmithJ, J. W. V. StoreyA, C. G. TinneyB, P. TuthillD, A. J. WalshA, W. WalshA, M. WhitingA, T. WongA,K, D. WoodsA, and P. C. M. YockL A School of Physics, University of New South Wales, Sydney NSW 2052, Australia B Anglo Australian Observatory, Epping NSW 1710, Australia C Centre for Astrobiology, Macquarie University, Sydney NSW 2109, Australia D University of Sydney, Sydney NSW 2006, Australia E Massey University, Auckland, New Zealand F John Hopkins University, Baltimore, MD 21218, USA G Swinburne University, Melbourne VIC 3122, Australia H Stockholm Observatory, Stockholm, Sweden I CEA Centre d’Etudes de Saclay, Paris, France J Electro Optics Systems, Queanbeyan NSW 2620, Australia K CSIRO Australia Telescope National Facility, Epping NSW 1710, Australia L University of Auckland, Auckland, New Zealand M Corresponding author. E-mail: [email protected] Received 2004 November 12, accepted 2005 April 12 Abstract: The cold, dry, and stable air above the summits of the Antarctic plateau provides the best ground- based observing conditions from optical to sub-millimetre wavelengths to be found on the Earth.
    [Show full text]
  • The Swift Ultra-Violet/Optical Telescope
    The Swift Ultra-Violet/Optical Telescope Peter W. A. Roming*a, Thomas E. Kennedyb, Keith O. Masonb, John A. Nouseka, Lindy Ahrc, Richard E. Binghamd, Patrick S. Broosa, Mary J. Carterb, Barry K. Hancockb, Howard E. Huckleb, S. D. Hunsbergera, Hajime Kawakamib, Ronnie Killoughc, T. Scott Kocha, Michael K. McLellandc, Kelly Smithc, Philip J. Smithb, Juan Carlos Soto†e, Patricia T. Boydf, Alice A. Breeveldb, Stephen T. Hollandf, Mariya Ivanushkinaa, Michael S. Pryzbyg, Martin D. Stillf, Joseph Stockg aDepartment of Astronomy & Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA bMullard Space Sciences Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK cSouthwest Research Institute, 6220 Culebra Rd, San Antonio, TX 78228, USA dOptical Science Laboratory, University College London, Gower St, London WC1E 6BT, UK eStarsys Research Corporation, 4909 Nautilus Court N., Boulder, CO 80301, USA fNASA/Goddard Space Flight Center, Code 660.1, Greenbelt, MD 20771, USA gSwales Aerospace, 5050 Powder Mill Rd, Beltsville, MD 20705, USA ABSTRACT The UV/Optical Telescope (UVOT) is one of three instruments flying aboard the Swift Gamma-ray Observatory. It is designed to capture the early (~1 minute) UV and optical photons from the afterglow of gamma-ray bursts in the 170-600 nm band as well as long term observations of these afterglows. This is accomplished through the use of UV and optical broadband filters and grisms. The UVOT has a modified Ritchey-Chrétien design with micro-channel plate intensified charged-coupled device detectors that record the arrival time of individual photons and provide sub- arcsecond positioning of sources.
    [Show full text]
  • JRASC December 2011, Low Resolution (PDF)
    The Journal of The Royal Astronomical Society of Canada PROMOTING ASTRONOMY IN CANADA December/décembre 2011 Volume/volume 105 Le Journal de la Société royale d’astronomie du Canada Number/numéro 6 [751] Inside this issue: Since When Was the Sun a Typical Star? A Midsummer Night The Starmus Experience Hubble and Shapley— Two Early Giants of Observational Cosmology A Vintage Star Atlas Night-Sky Poetry from Jasper Students David Levy and his Observing Logs Gigantic Elephant Trunk—IC 1396 FREE SHIPPING To Anywhere in Canada, All Products, Always KILLER VIEWS OF PLANETS CT102 NEW FROM CANADIAN TELESCOPES 102mm f:11 Air Spaced Doublet Achromatic Fraunhoufer Design CanadianTelescopes.Com Largest Collection of Telescopes and Accessories from Major Brands VIXEN ANTARES MEADE EXPLORE SCIENTIFIC CELESTRON CANADIAN TELESCOPES TELEGIZMOS IOPTRON LUNT STARLIGHT INSTRUMENTS OPTEC SBIG TELRAD HOTECH FARPOINT THOUSAND OAKS BAADER PLANETARIUM ASTRO TRAK ASTRODON RASC LOSMANDY CORONADO BORG QSI TELEVUE SKY WATCHER . and more to come December/décembre 2011 | Vol. 105, No. 6 | Whole Number 751 contents / table des matières Feature Articles / Articles de fond 273 Astrocryptic Answers by Curt Nason 232 Since When Was the Sun a Typical Star? 273 It’s Not All Sirius —Cartoon by Martin Beech by Ted Dunphy 238 A Midsummer Night 274 Society News by Robert Dick by James Edgar 240 The Starmus Experience 274 Index to Volume 105, 2011 by Paul and Kathryn Gray 245 Hubble and Shapley—Two Early Giants Columns / Rubriques of Observational Cosmology by Sidney van den Bergh
    [Show full text]
  • J Anglo- Australian Telescope 1982/83
    J Anglo- Australian Telescope 1982/83 Report of the Anglo-Australian Telescope Board 1 July 1982 to 30 June 1983 Australian Government Publishing Service Canberra 1983 Correspondence to the Board may be addressed to: The Secretary Anglo-Australian Telescope Board Correspondence to the Observatory may be addressed to: The Director Anglo-Australian Observatory P.O. Box 296 Epping,N.S.W.2121 Australia Telephone: (02) 868 1666 Telex: AA23999 (AAOSYD) Frcwt Cover: The Cartwkwl Galaxy. This very unusual galaxy is surrounded by a ring rotating at 250 km/s and expanding at 90 km/s. It is thought to have been formed by a collision with one of the neighbouring small galaxies. Photo by W. D. Pence. © Anglo-Australian Telescope Board 1983 ISSN 0 728-6554 Printed by C. J. THOMPSON, Commonwealth Government Printer, Canberra J The Right Honourable Sir Keith Joseph, M.P. Secretary of State for Education and Science, Government of the United Kingdom of Great Britain and Northern Ireland. The Honourable Barry O. Jones, M.P. Minister for Science and Technology, Government of the Commonwealth of Australia. In accordance with Article 8 of the Agreement between the Australian Government and the Government of the United Kingdom to provide for the establishment and oper- ation of an optical telescope at Siding Spring Mountain in the State of New South Wales, I present herewith a report by the Anglo-Australian Telescope Board for the year from 1 July 1982 to 30 June 1983. The report summarises the operations of the Board for the period under review and includes financial statements and statements of estimated expenditure in accordance with the provisions of the Agreement.
    [Show full text]
  • Stellar Tracers of the Cygnus Arm II
    A&A 492, 441–449 (2008) Astronomy DOI: 10.1051/0004-6361:200810927 & c ESO 2008 Astrophysics Stellar tracers of the Cygnus Arm II. A young open cluster in Camelopardalis OB3 I. Negueruela and A. Marco Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Escuela Politécnica Superior, Universidad of Alicante, Apdo. 99, 03080 Alicante, Spain e-mail: [email protected] Received 7 September 2008 / Accepted 10 October 2008 ABSTRACT Context. Cam OB3 is the only defined OB association believed to belong to the outer Galactic arm or Cygnus arm. Very few members have been observed and the distance modulus to the association is not well known. Aims. We attempt a more complete description of the population of Cam OB3 and a better determination of its distance modulus. Methods. We present uvby photometry of the area surrounding the O-type stars BD +56◦864 and LS I +57◦138, finding a clear sequence of the early-type stars that define an uncatalogued open cluster, which we call Alicante 1. We also present spectroscopy of stars in this cluster and the surrounding association. Results. From the spectral types for 18 very likely members of the association and UBV photometry found in the literature, we derive individual reddenings, finding a extinction law close to standard and an average distance modulus DM = 13.0 ± 0.4. This value is in excellent agreement with the distance modulus to the new cluster Alicante 1 found by fitting the photometric sequence to the ZAMS. In spite of the presence of several O-type stars, Alicante 1 is a very sparsely populated open cluster, with an almost total absence of early B-type stars.
    [Show full text]