Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946

B. C. Lee; I. Han; M. G. Park; A. P. Hatzes; K. M. Kim

doi:10.1051/0004-6361/201321863

Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946

B. C. Lee
, I. Han
, M. G. Park
, A. P. Hatzes
, K. M. Kim

Korea Astronomy and Space Science Institute
Karl Schwarzschild Observatory

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

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.

Original language	English
Article number	A124
Journal	Astronomy and Astrophysics
Volume	566
DOIs	https://doi.org/10.1051/0004-6361/201321863
State	Published - Jun 2014

Keywords

Brown dwarfs
Stars: individual: 63 Cygni
Stars: individual: HD 216946
Stars: individual: HD 3574
Stars: late-type
Techniques: radial velocities

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10.1051/0004-6361/201321863

Cite this

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title = "Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946",

abstract = "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.",

keywords = "Brown dwarfs, Stars: individual: 63 Cygni, Stars: individual: HD 216946, Stars: individual: HD 3574, Stars: late-type, Techniques: radial velocities",

author = "Lee, \{B. C.\} and I. Han and Park, \{M. G.\} and Hatzes, \{A. P.\} and Kim, \{K. M.\}",

year = "2014",

month = jun,

doi = "10.1051/0004-6361/201321863",

language = "English",

volume = "566",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

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 - https://www.scopus.com/pages/publications/84902989001

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 -

Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946

Abstract

Keywords

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