TY - JOUR
T1 - Two New Planets from the Anglo-Australian Planet Search
AU - Butler, R.P.
AU - Tinney, C.G.
AU - Marcy, G.W.
AU - Jones, H.R.A.
AU - Penny, A.J.
AU - Apps, K.
N1 - Original article can be found at: http://www.journals.uchicago.edu/ Copyright The American Astronomical Society
PY - 2001/7
Y1 - 2001/7
N2 - Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period of 743 days, a semiamplitude of 54 m s~1, and a high eccentricity, e\0.62, typical of extrasolar planets orbiting beyond 0.2 AU. The minimum (M sin i) mass of the companion is 1.97 MJ and the , semimajor axis is 1.65 AU. HD 27442 has a 415 day period, a semiamplitude of 32 m s~1, and an eccentricity of 0.058. The minimum mass is 1.43 MJ and the semimajor axis is 1.18 AU. This is the first , extrasolar planet orbiting beyond 0.2 AU that is in a circular orbit similar to solar system planets. The photon-limited precision of AAT/UCLES measurements is 3 m s~1 as demonstrated by stable stars and Keplerian fits to planet-bearing stars. In addition, we present confirmation of four previously announced planets.
AB - Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal periodic Keplerian velocity variations in the stars HD 160691 and HD 27442. HD 160691 has a period of 743 days, a semiamplitude of 54 m s~1, and a high eccentricity, e\0.62, typical of extrasolar planets orbiting beyond 0.2 AU. The minimum (M sin i) mass of the companion is 1.97 MJ and the , semimajor axis is 1.65 AU. HD 27442 has a 415 day period, a semiamplitude of 32 m s~1, and an eccentricity of 0.058. The minimum mass is 1.43 MJ and the semimajor axis is 1.18 AU. This is the first , extrasolar planet orbiting beyond 0.2 AU that is in a circular orbit similar to solar system planets. The photon-limited precision of AAT/UCLES measurements is 3 m s~1 as demonstrated by stable stars and Keplerian fits to planet-bearing stars. In addition, we present confirmation of four previously announced planets.
M3 - Article
SN - 0004-637X
VL - 555
SP - 410
EP - 417
JO - The Astrophysical Journal
JF - The Astrophysical Journal
ER -