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Overestimated inclinations of Milgromian disc galaxies : the case of the ultradiffuse galaxy AGC 114905
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dc.contributor.author | Banik, Indranil | |
dc.contributor.author | Nagesh, Srikanth T | |
dc.contributor.author | Haghi, Hosein | |
dc.contributor.author | Kroupa, Pavel | |
dc.contributor.author | Zhao, Hongsheng | |
dc.date.accessioned | 2022-05-19T14:30:13Z | |
dc.date.available | 2022-05-19T14:30:13Z | |
dc.date.issued | 2022-07-01 | |
dc.identifier | 279403461 | |
dc.identifier | cf5c97ca-2c5a-4a94-8c08-4b37f8f6012e | |
dc.identifier | 000794004200005 | |
dc.identifier | 85132204364 | |
dc.identifier.citation | Banik , I , Nagesh , S T , Haghi , H , Kroupa , P & Zhao , H 2022 , ' Overestimated inclinations of Milgromian disc galaxies : the case of the ultradiffuse galaxy AGC 114905 ' , Monthly Notices of the Royal Astronomical Society , vol. 513 , no. 3 , stac1073 , pp. 3541–3548 . https://doi.org/10.1093/mnras/stac1073 | en |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | Jisc: 278585 | |
dc.identifier.other | ORCID: /0000-0002-4123-7325/work/113399318 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2204.06569v2 | |
dc.identifier.uri | https://hdl.handle.net/10023/25414 | |
dc.description | Funding: IB is supported by Science and Technology Facilities Council grant ST/V000861/1, which also partially supports HZ. | en |
dc.description.abstract | We present hydrodynamical star-forming simulations in the Milgromian dynamics (MOND) framework of a gas-rich disc galaxy with properties similar to AGC 114905, which has recently been argued to have a rotation curve (RC) that is inconsistent with the MOND prediction. Our first model considers the galaxy in isolation, while our second model includes an external field of 0.05a0, the estimated gravitational field from large-scale structure. We show that isophotes in the face-on view can differ from circular at the 50% level. This could mislead observers into overestimating the inclination i between disc and sky planes. Because RCs require a correction factor of 1/sin i, the actual RC could be much higher than reported by observers. This plausibly reconciles AGC 114905 with MOND expectations. | |
dc.format.extent | 8 | |
dc.format.extent | 1394930 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en |
dc.subject | Galaxies: kinematics and dynamics | en |
dc.subject | Gravitation | en |
dc.subject | Galaxies: disc | en |
dc.subject | Galaxies: dwarf | en |
dc.subject | Galaxies: fundamental parameters | en |
dc.subject | Galaxies: individual: AGC 114905 | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | Astronomy and Astrophysics | en |
dc.subject | Space and Planetary Science | en |
dc.subject | 3rd-DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Overestimated inclinations of Milgromian disc galaxies : the case of the ultradiffuse galaxy AGC 114905 | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1093/mnras/stac1073 | |
dc.description.status | Peer reviewed | en |
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