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A close-in giant pl...
A close-in giant planet escapes engulfment by its star
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- Hon, Marc (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
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- Huber, Daniel (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.;Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Camperdown, NSW, Australia.
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- Rui, Nicholas Z. (författare)
- CALTECH, TAPIR, Pasadena, CA USA.
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visa fler...
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- Fuller, Jim (författare)
- CALTECH, TAPIR, Pasadena, CA USA.
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- Veras, Dimitri (författare)
- Univ Warwick, Ctr Exoplanets & Habitabil, Coventry, England.;Univ Warwick, Ctr Space Domain Awareness, Coventry, England.;Univ Warwick, Dept Phys, Coventry, England.
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- Kuszlewicz, James S. (författare)
- Heidelberg Univ, Ctr Astron Landessternwarte, Heidelberg, Germany.;Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, Aarhus, Denmark.
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- Kochukhov, Oleg (författare)
- Uppsala universitet,Observationell astrofysik
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- Stokholm, Amalie (författare)
- Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, Aarhus, Denmark.;Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy.;INAF Osservatorio Astrofis & Sci Spazio Bologna, Bologna, Italy.
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- Rørsted, Jakob Lysgaard (författare)
- Aarhus Univ, Stellar Astrophys Ctr, Dept Phys & Astron, Aarhus, Denmark.
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- Yildiz, Mutlu (författare)
- Ege Univ, Sci Fac, Dept Astron & Space Sci, Izmir, Turkiye.
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- Orhan, Zeynep Celik (författare)
- Ege Univ, Sci Fac, Dept Astron & Space Sci, Izmir, Turkiye.
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- Örtel, Sibel (författare)
- Ege Univ, Sci Fac, Dept Astron & Space Sci, Izmir, Turkiye.
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- Jiang, Chen (författare)
- Max Planck Inst Sonnensyst Forsch, Gottingen, Germany.
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- Hey, Daniel R. (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
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- Isaacson, Howard (författare)
- Univ Calif Berkeley, Dept Astron, Berkeley, CA USA.
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- Zhang, Jingwen (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
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- Vrard, Mathieu (författare)
- Ohio State Univ, Dept Astron, Columbus, OH USA.
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- Stassun, Keivan G. (författare)
- Vanderbilt Univ, Dept Phys & Astron, Nashville, TN USA.
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- Shappee, Benjamin J. (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
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- Tayar, Jamie (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.;Univ Florida, Bryant Space Sci Ctr, Dept Astron, Gainesville, FL USA.
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- Claytor, Zachary R. (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.;Univ Florida, Bryant Space Sci Ctr, Dept Astron, Gainesville, FL USA.
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- Beard, Corey (författare)
- Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA.
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- Bedding, Timothy R. (författare)
- Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Camperdown, NSW, Australia.
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- Brinkman, Casey (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.
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- Campante, Tiago L. (författare)
- Univ Porto, Inst Astrofis & Ciencias Espaco, CAUP, Porto, Portugal.;Univ Porto, Fac Ciencias, Dept Fis & Astron, Porto, Portugal.
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- Chaplin, William J. (författare)
- Univ Birmingham, Sch Phys & Astron, Birmingham, England.
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- Chontos, Ashley (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.;Princeton Univ, Dept Astrophys Sci, Princeton, NJ USA.
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- Giacalone, Steven (författare)
- Max Planck Inst Sonnensyst Forsch, Gottingen, Germany.
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- Holcomb, Rae (författare)
- Univ Florida, Bryant Space Sci Ctr, Dept Astron, Gainesville, FL USA.
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- Howard, Andrew W. (författare)
- CALTECH, Dept Astron, Pasadena, CA USA.
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- Lubin, Jack (författare)
- Univ Florida, Bryant Space Sci Ctr, Dept Astron, Gainesville, FL USA.
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- MacDougall, Mason (författare)
- Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA.
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- Montet, Benjamin T. (författare)
- Univ New South Wales, Sch Phys, Sydney, NSW, Australia.;Univ New South Wales, UNSW Data Sci Hub, Sydney, NSW, Australia.;Univ New South Wales, Australian Ctr Astrobiol, Sydney, NSW, Australia.
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- Murphy, Joseph M. A. (författare)
- Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA USA.
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- Ong, Joel (författare)
- Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.;Yale Univ, Dept Astron, New Haven, CT USA.
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- Pidhorodetska, Daria (författare)
- Univ Calif Riverside, Dept Earth & Planetary Sci, Riverside, CA USA.
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- Polanski, Alex S. (författare)
- Univ Kansas, Dept Phys & Astron, Lawrence, KS USA.
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- Rice, Malena (författare)
- Yale Univ, Dept Astron, New Haven, CT USA.;MIT, Dept Phys, Cambridge, MA USA.;MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA USA.
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- Stello, Dennis (författare)
- Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Camperdown, NSW, Australia.;Univ New South Wales, Sch Phys, Sydney, NSW, Australia.;ARC Ctr Excellence All Sky Astrophys Three Dimens, Sydney, NSW, Australia.
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- Tyler, Dakotah (författare)
- Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA.
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- Van Zandt, Judah (författare)
- Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA USA.
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- Weiss, Lauren M. (författare)
- Univ Notre Dame, Dept Phys & Astron, Notre Dame, IN USA.
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Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA.;Univ Sydney, Sydney Inst Astron SIfA, Sch Phys, Camperdown, NSW, Australia. (creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
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Ingår i: Nature. - : Springer Nature. - 0028-0836 .- 1476-4687. ; 618:7967, s. 917-920
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- When main-sequence stars expand into red giants, they are expected to engulf close-in planets(1-5). Until now, the absence of planets with short orbital periods around post-expansion, core-helium-burning red giants(6-8) has been interpreted as evidence that short-period planets around Sun-like stars do not survive the giant expansion phase of their host stars(9). Here we present the discovery that the giant planet 8 Ursae Minoris b(10) orbits a core-helium-burning red giant. At a distance of only 0.5 au from its host star, the planet would have been engulfed by its host star, which is predicted by standard single-star evolution to have previously expanded to a radius of 0.7 au. Given the brief lifetime of helium-burning giants, the nearly circular orbit of the planet is challenging to reconcile with scenarios in which the planet survives by having a distant orbit initially. Instead, the planet may have avoided engulfment through a stellar merger that either altered the evolution of the host star or produced 8 Ursae Minoris b as a second-generation planet(11). This system shows that core-helium-burning red giants can harbour close planets and provides evidence for the role of non-canonical stellar evolution in the extended survival of late-stage exoplanetary systems.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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Hon, Marc
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Huber, Daniel
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Rui, Nicholas Z.
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Fuller, Jim
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Veras, Dimitri
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Kuszlewicz, Jame ...
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visa fler...
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Kochukhov, Oleg
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Stokholm, Amalie
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Rørsted, Jakob L ...
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Yildiz, Mutlu
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Orhan, Zeynep Ce ...
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Örtel, Sibel
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Jiang, Chen
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Hey, Daniel R.
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Isaacson, Howard
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Zhang, Jingwen
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Vrard, Mathieu
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Stassun, Keivan ...
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Shappee, Benjami ...
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Tayar, Jamie
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Claytor, Zachary ...
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Beard, Corey
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Bedding, Timothy ...
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Brinkman, Casey
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Campante, Tiago ...
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Chaplin, William ...
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Chontos, Ashley
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Giacalone, Steve ...
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Holcomb, Rae
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Howard, Andrew W ...
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Lubin, Jack
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MacDougall, Maso ...
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Montet, Benjamin ...
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Murphy, Joseph M ...
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Ong, Joel
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Pidhorodetska, D ...
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Polanski, Alex S ...
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Rice, Malena
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Stello, Dennis
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Tyler, Dakotah
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Van Zandt, Judah
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Weiss, Lauren M.
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