Clouds in arms

被引：47

作者：

Belokurov, Vasily A. ^{[1
,2
]}

Erkal, Denis ^{[3
]}

机构：

[1] Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[2] Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA

[3] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 482卷 / 01期

基金：

欧洲研究理事会;

关键词：

galaxies: dwarf; Local Group; galaxies: structure; LARGE-MAGELLANIC-CLOUD; STREAM; SUBSTRUCTURE; SAGITTARIUS; DYNAMICS; HYDROGEN; ORIGIN; DISC;

D O I：

10.1093/mnrasl/sly178

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use astrometry and broad- band photometry from Data Release 2 of the ESA's Gaia mission to map out low surface-brightness features in the stellar density distribution around the Large and Small Magellanic Clouds. The LMC appears to have grown two thin and long stellar streams in its Northern and Southern regions, highly reminiscent of spiral arms. We use computer simulations of the Magellanic Clouds' in-fall to demonstrate that these arms were likely pulled out of the LMC's disc due to the combined influence of the SMC's most recent fly-by and the tidal field of the Milky Way.

引用

页码：L9 / L13

页数：5

共 51 条

[1] Gaia Data Release 2 Catalogue validation [J].

Arenou, F. ;

Luri, X. ;

Babusiaux, C. ;

Fabricius, C. ;

Helmi, A. ;

Muraveva, T. ;

Robin, A. C. ;

Spoto, F. ;

Vallenari, A. ;

Antoja, T. ;

Cantat-Gaudin, T. ;

Jordi, C. ;

Leclerc, N. ;

Reyle, C. ;

Romero-Gomez, M. ;

Shih, I. -C. ;

Soria, S. ;

Barache, C. ;

Bossini, D. ;

Bragaglia, A. ;

Breddels, M. A. ;

Fabrizio, M. ;

Lambert, S. ;

Marrese, P. M. ;

Massari, D. ;

Moitinho, A. ;

Robichon, N. ;

Ruiz-Dern, L. ;

Sordo, R. ;

Veljanoski, J. ;

Eyer, L. ;

Jasniewicz, G. ;

Pancino, E. ;

Soubiran, C. ;

Spagna, A. ;

Tanga, P. ;

Turon, C. ;

Zurbach, C. .

ASTRONOMY & ASTROPHYSICS, 2018, 616

[2] Gaia Data Release 2. Observational Hertzsprung-Russell diagrams [J].

Babusiaux, C. ;

van Leeuwen, F. ;

Barstow, M. A. ;

Jordi, C. ;

Vallenari, A. ;

Bossini, D. ;

Bressan, A. ;

Cantat-Gaudin, T. ;

van Leeuwen, M. ;

Brown, A. G. A. ;

Prusti, T. ;

de Bruijne, J. H. J. ;

Bailer-Jones, C. A. L. ;

Biermann, M. ;

Evans, D. W. ;

Eyer, L. ;

Jansen, F. ;

Klioner, S. A. ;

Lammers, U. ;

Lindegren, L. ;

Luri, X. ;

Mignard, F. ;

Panem, C. ;

Pourbaix, D. ;

Randich, S. ;

Sartoretti, P. ;

Siddiqui, H. I. ;

Soubiran, C. ;

Walton, N. A. ;

Arenou, F. ;

Bastian, U. ;

Cropper, M. ;

Drimmel, R. ;

Katz, D. ;

Lattanzi, M. G. ;

Bakker, J. ;

Cacciari, C. ;

Castaneda, J. ;

Chaoul, L. ;

Cheek, N. ;

De Angeli, F. ;

Fabricius, C. ;

Guerra, R. ;

Holl, B. ;

Masana, E. ;

Messineo, R. ;

Mowlavi, N. ;

Nienartowicz, K. ;

Panuzzo, P. ;

Portell, J. .

ASTRONOMY & ASTROPHYSICS, 2018, 616

[3] Clouds, Streams and Bridges: redrawing the blueprint of the Magellanic System with Gaia DR1 [J].

Belokurov, Vasily ;

Erkal, Denis ;

Deason, Alis J. ;

Koposov, Sergey E. ;

De Angeli, Francesca ;

Evans, Dafydd Wyn ;

Fraternali, Filippo ;

Mackey, Dougal .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 466 (04) :4711-4730

[4] Stellar streams around the Magellanic Clouds [J].

Belokurov, Vasily ;

Koposov, Sergey E. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 456 (01) :602-616

[5] SIMULATIONS OF THE MAGELLANIC STREAM IN A FIRST INFALL SCENARIO [J].

Besla, G. ;

Kallivayalil, N. ;

Hernquist, L. ;

van der Marel, R. P. ;

Cox, T. J. ;

Keres, D. .

ASTROPHYSICAL JOURNAL LETTERS, 2010, 721 (02) :L97-L101

[6] Are the Magellanic clouds on their first passage about the Milky Way? [J].

Besla, Gurtina ;

Kallivayalil, Nitya ;

Hernquist, Lars ;

Robertson, Brant ;

Cox, T. J. ;

van der Marel, Roeland P. ;

Alcock, Charles .

ASTROPHYSICAL JOURNAL, 2007, 668 (02) :949-967

[7] LOW SURFACE BRIGHTNESS IMAGING OF THE MAGELLANIC SYSTEM: IMPRINTS OF TIDAL INTERACTIONS BETWEEN THE CLOUDS IN THE STELLAR PERIPHERY [J].

Besla, Gurtina ;

Martinez-Delgado, David ;

van der Marel, Roeland P. ;

Beletsky, Yuri ;

Seibert, Mark ;

Schlafly, Edward F. ;

Grebel, Eva K. ;

Neyer, Fabian .

ASTROPHYSICAL JOURNAL, 2016, 825 (01)

[8] galpy: A python']python LIBRARY FOR GALACTIC DYNAMICS [J].

Bovy, Jo .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2015, 216 (02)

[9]

Brown A.G.A., 2018, A&A, V616, pA1, DOI [10.1051/0004-6361/201833051, DOI 10.1051/0004-6361/201833051]

[10]

Choi Y., 2018, ARXIV180500481

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