The 2:1 resonant exoplanetary system orbiting HD 73526

Tinney, Chris G. and Butler, R. Paul and Marcy, Geoffrey W. and Jones, Hugh R. A. and Laughlin, Gregory and Carter, Brad D. ORCID: https://orcid.org/0000-0003-0035-8769 and Bailey, Jeremy and O'Toole, Simon J. (2006) The 2:1 resonant exoplanetary system orbiting HD 73526. The Astrophysical Journal, 647 (1). pp. 594-599. ISSN 0004-637X

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Abstract

[Abstract]: We report the detection of a second exoplanet orbiting the G6V dwarf HD73526.
This second planet has an orbital period of 377 d, putting it in a 2:1 resonance with the
previously known exoplanet, the orbital period for which is updated to 188 d. Dynamical
modeling of the combined system allows solution for a self-consistent set of orbital
elements for both components. HD73526 is the fourth exoplanetary system (of a total
of 18 systems with 2 or more components currently known) to have components detected
in 2:1 resonance. Finding such a large fraction of multiple planets (more than 20 per
cent) in 2:1 resonance strongly suggests that orbital migration, halted by stabilisation in
a trapping resonance, plays an important role in the evolution of exoplanets in multiple
planet systems.


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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 00:56
Last Modified: 24 Mar 2017 03:13
Uncontrolled Keywords: planetary systems, stars, HD73526
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020108 Planetary Science (excl. Extraterrestrial Geology)
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
51 PHYSICAL SCIENCES > 5199 Other physical sciences > 519999 Other physical sciences not elsewhere classified
URI: http://eprints.usq.edu.au/id/eprint/2052

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