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词条 T Boötis
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  1. References

{{Starbox begin | name=T Boötis }}{{Starbox observe | |epoch=J2000.0 (ICRS) | |ra={{RA|14|14|07.00}}[1] |dec={{DEC|+19|04|00.0}} |appmag_v=9.7-<20.4[1] | |constell=Boötes}}{{Starbox character | class= | b-v= | u-b= | variable= N (Nova)[1] }}{{Starbox catalog | names= AAVSO 1409+19, BD+19 2768[1] }}{{Starbox reference | Simbad=T+Boo }}{{Starbox end}}T Boötis is believed to have been a nova. It was observed by only one person, Joseph Baxendell on 9, 11 and 22 April 1860, but has not been seen since.[2] It is located less than half a degree from Arcturus in the constellation Boötes and was at magnitude 9.75 when first seen, and magnitude 12.8 when last seen.[2] Other astronomers, including Friedrich Winnecke, Edward Charles Pickering, Ernst Hartwig and Ernst Zinner looked for a star in this location without success.[3]

Despite being usually referred to as a nova, it had characteristics that set it apart from other novae - an amplitude of at least 7 magnitudes, an unusually rapid decline in brightness and a location unusually far from the Galactic plane.[3] Joseph Ashbrook suggested in 1953 that it may be a recurrent nova which has been observed only once.[4]

References

1. ^{{cite web|title=VSX: Detail for T Boo|url=http://www.aavso.org/vsx/index.php?view=detail.top&oid=4306|website=The International Variable Star Index|publisher=AAVSO|accessdate=16 May 2015|archiveurl=https://www.webcitation.org/6YYmz24nj|archivedate=16 May 2015}}
2. ^{{cite web|last1=Baxendell|first1=Joseph|title=On the Three New Variable Stars, T Bootis, T. Serpentis, and S Delphini|url=http://adsabs.harvard.edu/full/1861MNRAS..21...68B|website=SAO/NASA Astrophysics Data System (ADS)|publisher=Smithsonian Astrophysical Observatory|accessdate=16 May 2015|archiveurl=https://www.webcitation.org/6YYbOnRR3|archivedate=16 May 2015}}
3. ^{{cite book|last1=Burnham|first1=Robert|title=Burnham's Celestial Handbook Volume 1|date=1978|publisher=Dover|isbn=0-486-23567-X|page=311|url=https://books.google.com.au/books?id=z3_CAgAAQBAJ&pg=PA311&dq=t+bootis+celestial+handbook&hl=en&sa=X&ei=gKdWVeWmFuKzmwXJxYHABA&ved=0CBwQ6AEwAA#v=onepage&q=t%20bootis%20celestial%20handbook&f=false|accessdate=16 May 2015}}
4. ^{{cite web|last1=Ashbrook|first1=Joseph|title=Notes on Four Novae|url=http://adsabs.harvard.edu/full/1953AJ.....58..175F|website=SAO/NASA Astrophysics Data System (ADS)|publisher=Smithsonian Astrophysical Observatory|accessdate=16 May 2015|archiveurl=https://www.webcitation.org/6YYkHUYgs|archivedate=16 May 2015}}
{{Stars of Boötes}}{{DEFAULTSORT:T Bootis}}{{var-star-stub}}

4 : Novae|Boötes|1860 in science|Objects with variable star designations

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