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Evidence for planet engulfment by the star HD82943.
Nature 2001; 411(6834):163-6Nat

Abstract

Current models of the evolution of the known extrasolar planetary systems need to incorporate orbital migration and/or gravitational interactions among giant planets to explain the presence of large bodies close to their parent stars. These processes could also lead to planets being ingested by their parent stars, which would alter the relative abundances of elements heavier than helium in the stellar atmospheres. In particular, the abundance of the rare 6Li isotope, which is normally destroyed in the early evolution of solar-type stars but preserved intact in the atmospheres of giant planets, would be boosted substantially. 6Li has not hitherto been observed reliably in a metal-rich star, where metallicity refers to the total abundance of elements heavier than helium. Here we report the discovery of 6Li in the atmosphere of the metal-rich solar-type star HD82943, which is known to have an orbiting giant planet. The presence of 6Li can probably be interpreted as evidence for a planet (or planets) having been engulfed by the parent star.

Authors+Show Affiliations

Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain. gil@ll.iac.esNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11346786

Citation

Israelian, G, et al. "Evidence for Planet Engulfment By the Star HD82943." Nature, vol. 411, no. 6834, 2001, pp. 163-6.
Israelian G, Santos NC, Mayor M, et al. Evidence for planet engulfment by the star HD82943. Nature. 2001;411(6834):163-6.
Israelian, G., Santos, N. C., Mayor, M., & Rebolo, R. (2001). Evidence for planet engulfment by the star HD82943. Nature, 411(6834), pp. 163-6.
Israelian G, et al. Evidence for Planet Engulfment By the Star HD82943. Nature. 2001 May 10;411(6834):163-6. PubMed PMID: 11346786.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evidence for planet engulfment by the star HD82943. AU - Israelian,G, AU - Santos,N C, AU - Mayor,M, AU - Rebolo,R, PY - 2001/5/11/pubmed PY - 2001/5/11/medline PY - 2001/5/11/entrez SP - 163 EP - 6 JF - Nature JO - Nature VL - 411 IS - 6834 N2 - Current models of the evolution of the known extrasolar planetary systems need to incorporate orbital migration and/or gravitational interactions among giant planets to explain the presence of large bodies close to their parent stars. These processes could also lead to planets being ingested by their parent stars, which would alter the relative abundances of elements heavier than helium in the stellar atmospheres. In particular, the abundance of the rare 6Li isotope, which is normally destroyed in the early evolution of solar-type stars but preserved intact in the atmospheres of giant planets, would be boosted substantially. 6Li has not hitherto been observed reliably in a metal-rich star, where metallicity refers to the total abundance of elements heavier than helium. Here we report the discovery of 6Li in the atmosphere of the metal-rich solar-type star HD82943, which is known to have an orbiting giant planet. The presence of 6Li can probably be interpreted as evidence for a planet (or planets) having been engulfed by the parent star. SN - 0028-0836 UR - https://www.unboundmedicine.com/medline/citation/11346786/Evidence_for_planet_engulfment_by_the_star_HD82943_ L2 - https://doi.org/10.1038/35075512 DB - PRIME DP - Unbound Medicine ER -