TY - JOUR
T1 - Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946
AU - Lee, B. C.
AU - Han, I.
AU - Park, M. G.
AU - Hatzes, A. P.
AU - Kim, K. M.
PY - 2014/6
Y1 - 2014/6
N2 - Aims. We study the low-amplitude and long-period variations in evolved stars using precise radial velocity measurements. Methods. The high-resolution, fiber-fed Bohyunsan Observatory Echelle Spectrograph (BOES) was used from September 2004 to May 2014 as part of the exoplanet search program at the Bohyunsan Optical Astronomy Observatory (BOAO). Results. We report the detection of low-amplitude and long-period orbital radial velocity variations in three evolved stars, HD 3574, 63 Cyg, and HD 216946. They have periods of 1061, 982, and 1382 days and semi-amplitudes of 376, 742, and 699 m s-1, respectively.
AB - Aims. We study the low-amplitude and long-period variations in evolved stars using precise radial velocity measurements. Methods. The high-resolution, fiber-fed Bohyunsan Observatory Echelle Spectrograph (BOES) was used from September 2004 to May 2014 as part of the exoplanet search program at the Bohyunsan Optical Astronomy Observatory (BOAO). Results. We report the detection of low-amplitude and long-period orbital radial velocity variations in three evolved stars, HD 3574, 63 Cyg, and HD 216946. They have periods of 1061, 982, and 1382 days and semi-amplitudes of 376, 742, and 699 m s-1, respectively.
KW - Brown dwarfs
KW - Stars: individual: 63 Cygni
KW - Stars: individual: HD 216946
KW - Stars: individual: HD 3574
KW - Stars: late-type
KW - Techniques: radial velocities
UR - http://www.scopus.com/inward/record.url?scp=84902989001&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/201321863
DO - 10.1051/0004-6361/201321863
M3 - Article
AN - SCOPUS:84902989001
SN - 0004-6361
VL - 566
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A124
ER -