“Swiss 1.2-metre Leonhard Euler Telescope”的意思、由来-开放百科全书

The Euler telescope uses the CORALIE instrument to search for exoplanets. In addition, the telescope uses the multi-purpose EulerCam (ecam), a high precision photometry instrument, and a smaller, piggyback mounted telescope, called "Pisco".^[2] Its first discovery was a planet in orbit around Gliese 86, determined to be a hot Jupiter with an orbital period of only 15.8 earth days and about four times the mass of Jupiter. Since then, many other exoplanets have been discovered or examined in follow-up observations.

Together with the Mercator Telescope, Euler was part of the Southern Sky extrasolar Planet search Programme, which has discovered numerous extrasolar planets.^[5] It has also been frequently employed for follow-up characterization to determine the mass of exoplanets discovered by the Wide Angle Search for Planets, SuperWASP.^[3]

Instruments

The CORALIE spectrograph is an echelle type spectrograph used for astronomy and was commissioned at the Euler Telescope in April 1998. The instrument performs doppler spectroscopy, that is it measures the Doppler effect on a star's electromagnetic spectrum caused by the gravitational tug of an exoplanet orbiting around it.^[4]^[5] The spectrograph participates in the Southern Sky extrasolar Planet search Programme.

Doppler spectroscopy, also known as "radial velocity" or "wobble" method, is an indirect detection method as it only observes the star's spectrum and not the planet itself. It differs from the transit method used by the space-based Kepler mission and ground-based SuperWASP and Next-Generation Transit Survey and can therefore be complementary to their observations. This is because the size of an exoplanet can be estimated using the transit method, while Doppler spectroscopy is used to estimate its mass. By combining the measured size and mass from both methods, it can be determined whether the observed exoplanet is gaseous or rocky.

Characteristics

The resolution of CORALIE is fixed at R = 50,000 with a 3 pixel sampling. The detector CCD is 2k X 2k with a 15 micrometer pixel size.

Discovered exoplanets

Five planetary object have been discovered using CORALIE along with several confirmations of discoveries by other programs.

Gallery

Video

See also

References

1. ^{{cite web |url=https://www.eso.org/public/teles-instr/lasilla/swiss/ |title=Swiss 1.2-metre Leonhard Euler Telescope |work=ESO |accessdate=10 September 2015}}
2. ^¹{{cite web |url=http://exoplanets.ch/projects/euler/ |title=EULER |work=Exoplanets |publisher=Université de Genève |location=Switzerland |accessdate=10 September 2015}}
3. ^{{cite journal | bibcode = 2010A&A...517L...1Q | title=WASP-8b: a retrograde transiting planet in a multiple system | journal=Astronomy and Astrophysics | volume=517 | year=2010 |display-authors=4 |author1=Queloz, D. |author2=Anderson, D. R. |author3=Collier Cameron, A. |author4=Gillon, M. |author5=Hebb, L. |author6=Hellier, C. |author7=Maxted, P. |author8=Pepe, F. |author9=Pollacco, D. |author10=Ségransan, D. |author11=Smalley, B. |author12=Triaud, A.H.M.J. |author13=Udry, S. |author14=West, R. |arxiv = 1006.5089 |doi = 10.1051/0004-6361/201014768 }}
4. ^¹{{cite journal| title=The CORALIE survey for southern extra-solar planets. I. A planet orbiting the star Gliese 86| last=Queloz |first=D.| journal=Astronomy and Astrophysics| volume=354| pages= 99–102| date=2000| bibcode=2000A&A...354...99Q| last2=Mayor| first2=M.| last3=Weber| first3=L.| last4=Blécha| first4=A.| last5=Burnet| first5=M.| last6=Confino| first6=B.| last7=Naef| first7=D.| last8=Pepe| first8=F.| last9=Santos| first9=N.| last10=Udry| first10=S.| display-authors=4}}
5. ^ESO publication, D. Queloz and M. Mayor, [https://www.eso.org/sci/publications/messenger/archive/no.105-sep01/messenger-no105-1-7.pdf From CORALIE to HARPS], September 2001
6. ^{{cite web|url=http://obswww.unige.ch/~udry/planet/elodie.html|title=Extrasolar Planet Search Programme at Haute-Provence Observatory|work=Observatory of Geneva|accessdate=17 August 2015}}
7. ^¹{{cite journal |title=The CORALIE survey for southern extra-solar planets II. The short-period planetary companions to HD 75289 and HD 130322 |author=Udry |bibcode=2000A&A...356..590U |date=2000 |journal=Astronomy and Astrophysics |volume=356 |pages=590–598 |last2=Mayor |first2=M. |last3=Naef |first3=D. |last4=Pepe |first4=F. |last5=Queloz |first5=D. |last6=Santos |first6=N. C. |last7=Burnet |first7=M. |last8=Confino |first8=B. |last9=Melo |first9=C. |display-authors=4}}
8. ^{{cite journal |title=The CORALIE survey for southern extra-solar planets XI. The return of the giant planet orbiting HD192263 |display-authors=4 |last=Santos | first=N. |date=2003 |journal=Astronomy and Astrophysics |volume=406 |issue=1 |pages=373–381 |doi=10.1051/0004-6361:20030776 |last2=Udry |first2=S. |last3=Mayor |first3=M. |last4=Naef |first4=D. |last5=Pepe |first5=F. |last6=Queloz |first6=D. |last7=Burki |first7=G. |last8=Cramer |first8=N. |last9=Nicolet |first9=B. |bibcode=2003A&A...406..373S |arxiv=astro-ph/0305434 }}
9. ^{{cite journal |title= The CORALIE survey for southern extra-solar planets III. A giant planet in orbit around HD 192263 |display-authors=4 |last=Santos | first=N. |journal=Astronomy and Astrophysics |date=2000 |volume=356 |pages=599–602 |bibcode=2000A&A...356..599S |last2=Mayor |first2=M. |last3=Naef |first3=D. |last4=Pepe |first4=F. |last5=Queloz |first5=D. |last6=Udry |first6=S. |last7=Burnet |first7=M. |last8=Revaz |first8=Y.}}
10. ^{{cite journal |title=The CORALIE survey for southern extrasolar planets V: 3 new extrasolar planets |display-authors=4 |last=Naef |first=D. |date=2001 |journal=Astronomy and Astrophysics |volume=375 |issue=1 |pages=205–218 |doi=10.1051/0004-6361:20010841 |last2=Mayor |first2=M. |last3=Pepe |first3=F. |last4=Queloz |first4=D. |last5=Santos |first5=N. C. |last6=Udry |first6=S. |last7=Burnet |first7=M. |bibcode=2001A&A...375..205N|arxiv = astro-ph/0106255}}
11. ^¹{{cite web |url=http://obswww.unige.ch/~udry/planet/coralie.html |title=Southern Sky extrasolar Planet search Programme |work=unige.ch}}