| Title: |
The Anglo-Australian Planet Search. XXV. A Candidate Massive Saturn Analog Orbiting HD 30177 |
| Authors: |
Wittenmyer, RA; Horner, J; Mengel, MW; Butler, RP; Wright, DJ; Tinney, CG; Carter, BD; Jones, HRA; Anglada-Escudé, G; Bailey, J; O'Toole, SJ |
| Source: |
urn:ISSN:0004-6256 ; urn:ISSN:1538-3881 ; Astronomical Journal, 153, 4, 167 |
| Publisher Information: |
American Astronomical Society |
| Publication Year: |
2017 |
| Collection: |
UNSW Sydney (The University of New South Wales): UNSWorks |
| Subject Terms: |
5109 Space Sciences; 51 Physical Sciences; anzsrc-for: 5109 Space Sciences; anzsrc-for: 51 Physical Sciences; anzsrc-for: 0201 Astronomical and Space Sciences; anzsrc-for: 5101 Astronomical sciences; anzsrc-for: 5107 Particle and high energy physics |
| Description: |
We report the discovery of a second long-period giant planet orbiting HD 30177, a star previously known to host a massive Jupiter analog (HD 30177b: a = 3.8 ±0.1 au, m sin i = 9.7 ±0.5 M Jup ). HD 30177c can be regarded as a massive Saturn analog in this system, with a = 9.9 ±1.0 au and m sin i = 7.6 ±3.1 M Jup . The formal best-fit solution slightly favors a closer-in planet at a ∼ 7 au, but detailed n-body dynamical simulations show that configuration to be unstable. A shallow local minimum of longer period, lower eccentricity solutions was found to be dynamically stable, and hence we adopt the longer period in this work. The proposed ∼32 year orbit remains incomplete; further monitoring of this and other stars is necessary to reveal the population of distant gas giant planets with orbital separations a ∼ 10 au, analogous to that of Saturn. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
http://purl.org/au-research/grants/arc/DP130102695; https://hdl.handle.net/1959.4/unsworks_44587 |
| DOI: |
10.3847/1538-3881/aa5f17 |
| Availability: |
https://hdl.handle.net/1959.4/unsworks_44587; https://unsworks.unsw.edu.au/bitstreams/e459da4e-97e5-4205-8251-a83fb78ba2e4/download; https://doi.org/10.3847/1538-3881/aa5f17 |
| Rights: |
open access ; https://purl.org/coar/access_right/c_abf2 ; CC-BY-NC-ND ; https://creativecommons.org/licenses/by-nc-nd/4.0/ ; free_to_read |
| Accession Number: |
edsbas.EC1C83CB |
| Database: |
BASE |