Astrophysics – Page 42 – Kavli Institute Pre-Print Publications

Status Report on the Chicago-Carnegie Hubble Program (CCHP): Three Independent Astrophysical Determinations of the Hubble Constant Using the James Webb Space Telescope

Posted by dbos August 12, 2024August 27, 2024Chicago

Kavli Affiliate: Wendy L. Freedman | First 5 Authors: Wendy L. Freedman, Barry F. Madore, In Sung Jang, Taylor J. Hoyt, Abigail J. Lee | Summary: We present the latest results from the Chicago Carnegie Hubble Program (CCHP) to measure the Hubble constant using data from the James Webb Space Telescope (JWST). This program is […]

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Investigating the competition between the deconfinement and chiral phase transitions in light of the multimessenger observations of neutron stars

Posted by dbos August 11, 2024Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Wen-Li Yuan, Bikai Gao, Yan Yan, Bolin Li, Renxin Xu | Summary: We extend the parity doublet model for hadronic matter and study the possible presence of quark matter inside the cores of neutron stars with the Nambu-Jona-Lasinio (NJL) model. Considering the uncertainties of the QCD phase […]

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Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b

Posted by dbos August 10, 2024MIT

Kavli Affiliate: George Ricker | First 5 Authors: Ilaria Carleo, Oscar Barrágan, Carina M. Persson, Malcolm Fridlund, Kristine W. F. Lam | Summary: Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters, challenging our understanding on their actual origin. The present […]

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Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b

Posted by dbos August 10, 2024MIT

Kavli Affiliate: Roland Vanderspek | First 5 Authors: Ilaria Carleo, Oscar Barrágan, Carina M. Persson, Malcolm Fridlund, Kristine W. F. Lam | Summary: Hot and warm Jupiters might have undergone the same formation and evolution path, but the two populations exhibit different distributions of orbital parameters, challenging our understanding on their actual origin. The present […]

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Mass determination of two Jupiter-sized planets orbiting slightly evolved stars: TOI-2420 b and TOI-2485 b

Posted by dbos August 10, 2024MIT

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Proof of principle X-ray reflection mass measurement of the black hole in H1743-322

Posted by dbos August 9, 2024MIT

Kavli Affiliate: Erin Kara | First 5 Authors: Edward Nathan, Adam Ingram, James F. Steiner, Ole König, Thomas Dauser | Summary: The black hole X-ray binary H1743-322 lies in a region of the Galaxy with high extinction, and therefore it has not been possible to make a dynamical mass measurement. In this paper we make […]

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Absence of High-mass Prestellar Cores in the Orion Giant Molecular Cloud

Posted by dbos August 9, 2024August 19, 2024Peking

Kavli Affiliate: Ke Wang | First 5 Authors: Wenyu Jiao, Ke Wang, Fengwei Xu, , | Summary: A fundamental difference between "core-fed" and "clump-fed" star formation theories lies in the existence or absence of high-mass cores at the prestellar stage. However, only a handful of such cores have been observed. Here, different than previous search […]

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The SDSS-V Black Hole Mapper Reverberation Mapping Project: Multi-Line Dynamical Modeling of a Highly Variable Active Galactic Nucleus with Decade-long Light Curves

Posted by dbos August 8, 2024Peking

Kavli Affiliate: Claudio Ricci | First 5 Authors: Zachary Stone, Yue Shen, Scott F. Anderson, Franz Bauer, W. N. Brandt | Summary: We present dynamical modeling of the broad-line region (BLR) for the highly variable AGN SDSS J141041.25+531849.0 ($z = 0.359$) using photometric and spectroscopic monitoring data from the Sloan Digital Sky Survey Reverberation Mapping […]

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The SDSS-V Black Hole Mapper Reverberation Mapping Project: Multi-Line Dynamical Modeling of a Highly Variable Active Galactic Nucleus with Decade-long Light Curves

Posted by dbos August 8, 2024Peking

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TOI-2490b- The most eccentric brown dwarf transiting in the brown dwarf desert

Posted by dbos August 8, 2024August 19, 2024MIT

Kavli Affiliate: Sara Seager | First 5 Authors: Beth A. Henderson, Sarah L. Casewell, Andrés Jordán, Rafael Brahm, Thomas Henning | Summary: We report the discovery of the most eccentric transiting brown dwarf in the brown dwarf desert, TOI02490b. The brown dwarf desert is the lack of brown dwarfs around main sequence stars within $sim3$~AU […]

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