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A remnant planetary core in the hot-Neptune desert 期刊论文
NATURE, 2020, 583 (7814) : 39-+
作者:  David J. Armstrong;  Thé;  o A. Lopez;  Vardan Adibekyan;  Richard A. Booth;  Edward M. Bryant;  Karen A. Collins;  Magali Deleuil;  Alexandre Emsenhuber;  Chelsea X. Huang;  George W. King;  Jorge Lillo-Box;  Jack J. Lissauer;  Elisabeth Matthews;  Olivier Mousis;  Louise D. Nielsen;  Hugh Osborn;  Jon Otegi;  Nuno C. Santos;  ;  rgio G. Sousa;  Keivan G. Stassun;  Dimitri Veras;  Carl Ziegler;  Jack S. Acton;  Jose M. Almenara;  David R. Anderson;  David Barrado;  Susana C. C. Barros;  Daniel Bayliss;  Claudia Belardi;  Francois Bouchy;  ;  sar Briceñ;  o;  Matteo Brogi;  David J. A. Brown;  Matthew R. Burleigh;  Sarah L. Casewell;  Alexander Chaushev;  David R. Ciardi;  Kevin I. Collins;  Knicole D. Coló;  n;  Benjamin F. Cooke;  Ian J. M. Crossfield;  Rodrigo F. Dí;  az;  Elisa Delgado Mena;  Olivier D. S. Demangeon;  Caroline Dorn;  Xavier Dumusque;  Philipp Eigmü;  ller;  Michael Fausnaugh;  Pedro Figueira;  Tianjun Gan;  Siddharth Gandhi;  Samuel Gill;  Erica J. Gonzales;  Michael R. Goad;  Maximilian N. Gü;  nther;  Ravit Helled;  Saeed Hojjatpanah;  Steve B. Howell;  James Jackman;  James S. Jenkins;  Jon M. Jenkins;  Eric L. N. Jensen;  Grant M. Kennedy;  David W. Latham;  Nicholas Law;  Monika Lendl;  Michael Lozovsky;  Andrew W. Mann;  Maximiliano Moyano;  James McCormac;  Farzana Meru;  Christoph Mordasini;  Ares Osborn;  Don Pollacco;  Didier Queloz;  Liam Raynard;  George R. Ricker;  Pamela Rowden;  Alexandre Santerne;  Joshua E. Schlieder;  Sara Seager;  Lizhou Sha;  Thiam-Guan Tan;  Rosanna H. Tilbrook;  Eric Ting;  Sté;  phane Udry;  Roland Vanderspek;  Christopher A. Watson;  Richard G. West;  Paul A. Wilson;  Joshua N. Winn;  Peter Wheatley;  Jesus Noel Villasenor;  Jose I. Vines;  Zhuchang Zhan
收藏  |  浏览/下载:20/0  |  提交时间:2020/07/06

The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. Exoplanets that have undergone rare evolutionary processes provide a route to understanding planetary interiors. Planets found in and near the typically barren hot-Neptune '  desert'  (1,2)(a region in mass-radius space that contains few planets) have proved to be particularly valuable in this regard. These planets include HD149026b(3), which is thought to have an unusually massive core, and recent discoveries such as LTT9779b(4)and NGTS-4b(5), on which photoevaporation has removed a substantial part of their outer atmospheres. Here we report observations of the planet TOI-849b, which has a radius smaller than Neptune'  s but an anomalously large mass of39.1-2.6+2.7Earth masses and a density of5.2-0.8+0.7grams per cubic centimetre, similar to Earth'  s. Interior-structure models suggest that any gaseous envelope of pure hydrogen and helium consists of no more than3.9-0.9+0.8 per cent of the total planetary mass. The planet could have been a gas giant before undergoing extreme mass loss via thermal self-disruption or giant planet collisions, or it could have avoided substantial gas accretion, perhaps through gap opening or late formation(6). Although photoevaporation rates cannot account for the mass loss required to reduce a Jupiter-like gas giant, they can remove a small (a few Earth masses) hydrogen and helium envelope on timescales of several billion years, implying that any remaining atmosphere on TOI-849b is likely to be enriched by water or other volatiles from the planetary interior. We conclude that TOI-849b is the remnant core of a giant planet.


Observations of TOI-849b reveal a radius smaller than Neptune'  s but a large mass of about 40 Earth masses, indicating that the planet is the remnant core of a gas giant.


  
Killer whale presence drives bowhead whale selection for sea ice in Arctic seascapes of fear 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (12) : 6590-6598
作者:  Matthews, Cory J. D.;  Breed, Greg A.;  LeBlanc, Bernard;  Ferguson, Steven H.
收藏  |  浏览/下载:31/0  |  提交时间:2020/05/13
nonconsumptive effects  predator-prey dynamics  state space model  risk effects  trait-mediated interactions  
COVID-19: research after the pandemic 期刊论文
NATURE, 2020, 580 (7802) : 185-185
作者:  Triantis, Kostas A.;  Matthews, Thomas J.
收藏  |  浏览/下载:5/0  |  提交时间:2020/07/03
Recommended temperature metrics for carbon budget estimates, model evaluation and climate policy 期刊论文
NATURE GEOSCIENCE, 2019, 12 (12) : 964-+
作者:  Tokarska, Katarzyna B.;  Schleussner, Carl-Friedrich;  Rogelj, Joeri;  Stolpe, Martin B.;  Matthews, H. Damon;  Pfleiderer, Peter;  Gillett, Nathan P.
收藏  |  浏览/下载:8/0  |  提交时间:2020/02/16
"Ancient pigs reveal a near-complete genomic turnover following their introduction to Europe (vol 116, pg17231, 2019) 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (25) : 14610-14611
作者:  Frantz, Laurent A. F.;  Haile, James;  Lin, Audrey T.;  Scheu, Amelie;  Geoerg, Christina;  Benecke, Norbert;  Alexander, Michelle;  Linderholm, Anna;  Mullin, Victoria E.;  Daly, Kevin G.;  Battista, Vincent M.;  Price, Max;  Gron, Kurt J.;  Alexandri, Panoraia;  Arbogast, Rose-Marie;  Arbuckle, Benjamin;  Balasescu, Adrian;  Barnett, Ross;  Bartosiewicz, Laszlo;  Baryshnikov, Gennady;  Bonsall, Clive;  Boric, Dian;  Boroneant, Adina;  Bulatovic, Jelena;  Cakirlar, Canan;  Carreterow, Jose-Miguel;  Chapman, John;  Church, Mike;  Crooijmans, Richard;  De Cupere, Bea;  Detry, Cleia;  Dimitrijevic, Vesna;  Dumitrascu, Valentin;  du Plessis, Louis;  Edwards, Ceiridwen J.;  Erek, Cevdet Merih;  Erim-Ozdogan, Ash;  Ervynck, Anton;  Fulgione, Domenico;  Gligor, Mihai;  Gotherstrom, Anders;  Gourichon, Lionel;  Groenen, Martien A. M.;  Helmer, Daniel;  Hongo, Hitomi;  Horwitz, Liora K.;  Irving-Pease, Evan K.;  Lebrasseur, Ophelie;  Lesur, Josephine;  Malone, Caroline;  Manaseryan, Ninna;  Marciniak, Arkadiusz;  Martlew, Holley;  Mashkour, Marjan;  Matthews, Roger;  Matuzeviciute, Giedre Motuzaite;  Maziar, Sepideh;  Meijaard, Erik;  McGovern, Tom;  Megens, Hendrik-Jan;  Miller, Rebecca;  Mohaseb, Azadeh Fatemeh;  Orschiedt, Jorg;  Orton, David;  Papathanasiou, Anastasia;  Pearson, Mike Parker;  Pinhasi, Ron;  Radmanovic, Darko;  Ricaut, Francois-Xavier;  Richards, Mike;  Sabin, Richard;  Sarti, Lucia;  Schier, Wolfram;  Sheikhi, Shiva;  Stephan, Elisabeth;  Stewart, John R.;  Stoddart, Simon;  Tagliacozzo, Antonio;  Tasic, Nenad;  Trantalidou, Katerina;  Tresset, Anne;  Valdiosera, Cristina;  van den Hurk, Youri;  Van Poucke, Sophie;  Vigne, Jean-Denis;  Yanevich, Alexander;  Zeeb-Lanz, Andrea;  Triantafyllidis, Alexandros;  Gilbert, M. Thomas P.;  Schibler, Jorg;  Rowley-Conwy, Peter;  Zeder, Melinda;  Peters, Joris;  Cucchi, Thomas;  Bradley, Daniel G.;  Dobney, Keith;  Burger, Joachim;  Evin, Allowen;  Girdland-Flink, Linus;  Larson, Greger
收藏  |  浏览/下载:18/0  |  提交时间:2020/02/17
Early Ordovician to Early Devonian tectonic development of the northern margin of Laurentia, Canadian Arctic Islands 期刊论文
GEOLOGICAL SOCIETY OF AMERICA BULLETIN, 2019, 131: 1075-1094
作者:  Dewing, Keith;  Hadlari, Thomas;  Pearson, D. Graham;  Matthews, William
收藏  |  浏览/下载:6/0  |  提交时间:2019/11/27
A key metabolic gene for recurrent freshwater colonization and radiation in fishes 期刊论文
SCIENCE, 2019, 364 (6443) : 886-+
作者:  Ishikawa, Asano;  Kabeya, Naoki;  Ikeya, Koki;  Kakioka, Ryo;  Cech, Jennifer N.;  Osada, Naoki;  Leal, Miguel C.;  Inoue, Jun;  Kume, Manabu;  Toyoda, Atsushi;  Tezuka, Ayumi;  Nagano, Atsushi J.;  Yamasaki, Yo Y.;  Suzuki, Yuto;  Kokita, Tomoyuki;  Takahashi, Hiroshi;  Lucek, Kay;  Marques, David;  Takehana, Yusuke;  Naruse, Kiyoshi;  Mori, Seiichi;  Monroig, Oscar;  Ladd, Nemiah;  Schubert, Carsten J.;  Matthews, Blake;  Peichel, Catherine L.;  Seehausen, Ole;  Yoshizaki, Goro;  Kitano, Jun
收藏  |  浏览/下载:11/0  |  提交时间:2019/11/27
Resolving seasonal rainfall changes in the Middle East during the last interglacial period 期刊论文
Proceedings of the National Academy of Sciences of the United States of America, 2019, 116 (50) : 24985-24990
作者:  Ian J. Orland;  Feng He;  Miryam Bar-Matthews;  Guangshan Chen;  Avner Ayalon;  and John E. Kutzbach
收藏  |  浏览/下载:6/0  |  提交时间:2020/04/16
paleoclimate  seasonal-resolution  oxygen isotopes  data-model comparison  
Protein assemblies ejected directly from native membranes yield complexes for mass spectrometry 期刊论文
SCIENCE, 2018, 362 (6416) : 829-+
作者:  Chorev, Dror S.;  Baker, Lindsay A.;  Wu, Di;  Beilsten-Edmands, Victoria;  Rouse, Sarah L.;  Zeev-Ben-Mordehai, Tzviya;  Jiko, Chimari;  Samsudin, Firdaus;  Gerle, Christoph;  Khalid, Syma;  Stewart, Alastair G.;  Matthews, Stephen J.;  Gruenewald, Kay;  Robinson, Carol V.
收藏  |  浏览/下载:7/0  |  提交时间:2019/11/27
Response to Comment on "The earliest modern humans outside Africa" 期刊论文
SCIENCE, 2018, 362 (6413)
作者:  Hershkovitz, Israel;  Duval, Mathieu;  Grun, Rainer;  Mercier, Norbert;  Valladas, Helene;  Ayalon, Avner;  Bar-Matthews, Miryam;  Weber, Gerhard W.;  Quam, Rolf;  Zaidner, Yossi;  Weinstein-Evron, Mina
收藏  |  浏览/下载:12/0  |  提交时间:2019/11/27