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Search: WFRF:(Cohen Aaron) > (2020-2024) > JWST's PEARLS :

JWST's PEARLS : Mothra, a new kaiju star at z=2.091 extremely magnified by MACS0416, and implications for dark matter models

Diego, Jose M. (author)
Inst Fis Cantabria CSIC UC, Avda Los Castros S-N, Santander 39005, Spain.
Sun, Bangzheng (author)
Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA.
Yan, Haojing (author)
Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA.
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Furtak, Lukas J. (author)
Ben Gurion Univ Negev, Phys Dept, POB 653, IL-84105 Beer Sheva, Israel.
Zackrisson, Erik (author)
Uppsala universitet,Observationell astrofysik
Dai, Liang (author)
Univ Calif Berkeley, Dept Phys, 366 Phys North MC 7300, Berkeley, CA 94720 USA.
Kelly, Patrick (author)
Univ Minnesota, Minnesota Inst Astrophys, 116 Church St SE, Minneapolis, MN 55455 USA.
Nonino, Mario (author)
INAF Trieste Astron Observ, Via Bazzoni 2, I-34124 Trieste, Italy.
Adams, Nathan (author)
Univ Manchester, Jodrell Bank Ctr Astrophys, Alan Turing Bldg,Oxford Rd, Manchester M13 9PL, England.
Meena, Ashish K. (author)
Ben Gurion Univ Negev, Phys Dept, POB 653, IL-84105 Beer Sheva, Israel.
Willner, Steven P. (author)
Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA.
Zitrin, Adi (author)
Ben Gurion Univ Negev, Phys Dept, POB 653, IL-84105 Beer Sheva, Israel.
Cohen, Seth H. (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
D'Silva, Jordan C. J. (author)
Univ Western Australia, Int Ctr Radio Astron Res ICRAR, M468, 35 Stirling Highway, Crawley, WA 6009, Australia.;Univ Western Australia, Int Space Ctr ISC, M468, 35 Stirling Highway, Crawley, WA 6009, Australia.;ARC Ctr Excellence All Sky Astrophys 3 Dimens ASTR, Stromlo, Australia.
Jansen, Rolf A. (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Summers, Jake (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Windhorst, Rogier A. (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Coe, Dan (author)
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA.;European Space Agcy ESA, Assoc Univ Res Astron AURA, Baltimore, MD 21218 USA.;Johns Hopkins Univ, Ctr Astrophys Sci, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA.
Conselice, Christopher J. (author)
Univ Manchester, Jodrell Bank Ctr Astrophys, Alan Turing Bldg,Oxford Rd, Manchester M13 9PL, England.
Driver, Simon P. (author)
European Space Agcy ESA, Assoc Univ Res Astron AURA, Baltimore, MD 21218 USA.
Frye, Brenda (author)
Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA.
Grogin, Norman A. (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Koekemoer, Anton M. (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Marshall, Madeline A. (author)
Johns Hopkins Univ, Ctr Astrophys Sci, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA.;Natl Res Council Canada, Herzberg Astron & Astrophys Res Ctr, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada.
Pirzkal, Nor (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Robotham, Aaron (author)
European Space Agcy ESA, Assoc Univ Res Astron AURA, Baltimore, MD 21218 USA.
Rutkowski, Michael J. (author)
Minnesota State Univ Mankato, TN141, Mankato, MN 56001 USA.
Ryan Jr, Russell E. (author)
Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA.
Tompkins, Scott (author)
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA.
Willmer, Christopher N. A. (author)
Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA.
Bhatawdekar, Rachana (author)
European Space Agcy ESA, European Space Astron Ctr ESAC, Camino Bajo Castillo S-N, Villanueva De La Canada 28692, Madrid, Spain.
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Inst Fis Cantabria CSIC UC, Avda Los Castros S-N, Santander 39005, Spain Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA. (creator_code:org_t)
EDP Sciences, 2023
2023
English.
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 679
Related links:
https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We report the discovery of Mothra, an extremely magnified monster star, likely a binary system of two supergiant stars, in one of the strongly lensed galaxies behind the galaxy cluster MACS J0416.1-2403. Mothra is in a galaxy with spectroscopic redshift z = 2.091 in a portion of the galaxy that is parsecs away from the cluster caustic. The binary star is observed only on the side of the critical curve with negative parity but has been detectable for at least eight years, implying the presence of a small lensing perturber. Microlenses alone cannot explain the earlier observations of this object made with the Hubble Space Telescope. A larger perturber with a mass of at least 10(4 )M(circle dot) offers a more satisfactory explanation. Based on the lack of perturbation on other nearby sources in the same arc, the maximum mass of the perturber is 2.5 x 10(6) M-circle dot, making this the smallest substructure constrained by lensing at z > 0.3. The existence of this millilens is fully consistent with expectations from standard cold dark matter cosmology. On the other hand, the existence of such a small substructure in a cluster environment has implications for other dark matter models. In particular, warm dark matter models with particle masses below 8.7 keV are excluded by our observations. Similarly, axion dark matter models are consistent with the observations only if the axion mass is in the range 0.5 x 10(-22) eV < m(a )< 5 x 10(-22) eV.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

gravitational lensing: strong
stars: massive
dark matter

Publication and Content Type

ref (subject category)
art (subject category)

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