McCarthy, Chris and Butler, R. Paul and Tinney, C. G. and Jones, Hugh R. A. and Marcy, Geoffrey W. and Carter, Brad 
ORCID: https://orcid.org/0000-0003-0035-8769 and Penny, Alan J. and Fischer, Debra A.
(2004)
Multiple companions to HD 154857 and HD 160691.
The Astrophysical Journal, 617 (1).
pp. 575-579.
ISSN 0004-637X
![[img]](http://eprints.usq.edu.au/style/images/fileicons/text.png)
|
Text (Published Version)
McCarthy_et_al_CARTER.pdf Download (330kB) |
Abstract
[Abstract]: Precise Doppler measurements from the Anglo-Australian Telescope (AAT) UCLES spectrometer reveal two
companions to both HD 154857 and HD 160691. The inner companion to HD 154857 has a period of 398 days, an
eccentricity of 0.51, and a minimum mass of 1.8MJ. An outer companion has a period much longer than 2 yr and is
currently detected only as a linear trend of 14 m s1 yr1. The inner companion to HD 160691, previously
announced from AAT data, has a period of 645 days, an eccentricity of 0.20, and a minimum mass of 1.7MJ. For
the outer planet, whose orbit is less well constrained, a two-Keplerian fit yields a period of 8.2 yr, an eccentricity of
0.57, and a minimum mass of 3.1MJ. With these orbital parameters, its maximum separation from the star of 0B4
makes it a viable target for direct imaging.
|
Statistics for this ePrint Item |
| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Published version made accessible, in accordance with the copyright policy of the publisher. |
| Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Biological and Physical Sciences (Up to 30 Jun 2013) |
| Faculty/School / Institute/Centre: | Historic - Faculty of Sciences - Department of Biological and Physical Sciences (Up to 30 Jun 2013) |
| Date Deposited: | 11 Oct 2007 00:21 |
| Last Modified: | 24 Mar 2017 03:15 |
| Uncontrolled Keywords: | planetary systems, stars, HD 154857, HD 160691 |
| Fields of Research (2008): | 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020102 Astronomical and Space Instrumentation |
| Fields of Research (2020): | 51 PHYSICAL SCIENCES > 5199 Other physical sciences > 519999 Other physical sciences not elsewhere classified |
| URI: | http://eprints.usq.edu.au/id/eprint/456 |
Actions (login required)
 |
Archive Repository Staff Only |