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  A joint SRG/eROSITA plus ZTF search: Discovery of a 97-min period eclipsing cataclysmic variable with evidence of a brown dwarf secondary

Galiullin, I., Rodriguez, A. C., Kulkarni, S. R., Sunyaev, R., Gilfanov, M., Bikmaev, I., et al. (2024). A joint SRG/eROSITA plus ZTF search: Discovery of a 97-min period eclipsing cataclysmic variable with evidence of a brown dwarf secondary. Monthly Notices of the Royal Astronomical Society, 528(1), 676-692. doi:10.1093/mnras/stae012.

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Galiullin, Ilkham, Author
Rodriguez, Antonio C., Author
Kulkarni, Shrinivas R., Author
Sunyaev, Rashid1, Author           
Gilfanov, Marat1, Author           
Bikmaev, Ilfan, Author
Yungelson, Lev, Author
van Roestel, Jan, Author
Gänsicke, Boris T., Author
Khamitov, Irek, Author
Szkody, Paula, Author
El-Badry, Kareem, Author
Suslikov, Mikhail, Author
Prince, Thomas A., Author
Buntov, Mikhail, Author
Caiazzo, Ilaria, Author
Gorbachev, Mark, Author
Graham, Matthew J., Author
Gumerov, Rustam, Author
Irtuganov, Eldar, Author
Laher, Russ R., AuthorMedvedev, Pavel, AuthorRiddle, Reed, AuthorRusholme, Ben, AuthorSakhibullin, Nail, AuthorSklyanov, Alexander, AuthorVanderbosch, Zachary P., Author more..
Affiliations:
1High Energy Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159881              

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 Abstract: Dwarf satellites in galaxy groups are distributed in an anisotropic and asymmetric manner, which is called the ‘lopsided satellite distribution’. This lopsided signal has been observed not only in galaxy pairs but also in isolated systems. However, the physical origin of the lopsided signal in isolated systems is still unknown. In this work, we investigate this in the state-of-the-art hydrodynamical simulation of the MillenniumTNG Project by tracing each system back to high redshift. We find that the lopsided signal is dominated by satellites located in the outer regions of the halo and is also dominated by recently accreted satellites. The lopsided signal originates from the anisotropic accretion of galaxies from the surrounding large-scale structure and that, after accretion, the non-linear evolution of satellites inside the dark matter halo weakens the lopsidedness. The signal decreases as cosmic time passes because of a competition between anisotropic accretion and internal evolution within dark matter haloes. Our findings provide a useful perspective for the study of galaxy evolution, especially for the origin of the spatial satellite galaxy distributions.

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Language(s): eng - English
 Dates: 2024-01-04
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stae012
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 528 (1) Sequence Number: - Start / End Page: 676 - 692 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150