Skip to content

Research at St Andrews

Accretion of small satellites and gas inflows in a disc galaxy

Research output: Contribution to journalArticle

DOI

Author(s)

F. G. Ramón-Fox, Héctor Aceves

School/Research organisations

Abstract

Galaxy interactions can have an important effect in a galaxy's evolution. Cosmological models predict a large number of small satellites around galaxies. It is important to study the effect that these small satellites can have on the host. The present work explores the effect of small N-body spherical satellites with total mass ratios in the range ~1:1000-1:100 in inducing gas flows to the central regions of a disc galaxy with late-type morphology resembling the Milky Way. Two model galaxies are considered: barred and non-barred models; the latter one is motivated in order to isolate and understand better the effects of the satellite. Several circular and non-circular orbits are explored, considering both prograde and retrogade orientations. We show that satellites with such small mass ratios can still produce observable distortions in the gas and stellar components of the galaxy. In terms of gas flows, the prograde circular orbits are more favourable for producing gas flows, where in some cases up to 60 per cent of the gas of the galaxy is driven to the central region. We find, hence, that small satellites can induce significant gas flows to the central regions of a disc galaxy, which is relevant in the context of fuelling active galactic nuclei.

Close

Details

Original languageEnglish
Pages (from-to)3908-3922
Number of pages15
JournalMonthly Notices of the Royal Astronomical Society
Volume491
Issue number3
DOIs
Publication statusPublished - 3 Jan 2020

    Research areas

  • Galaxies: interactions, Galaxies: ISM, Methods: numerical

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by journal

  1. A survey for variable young stars with small telescopes: II - mapping a protoplanetary disc with stable structures at 0.15 au

    Evitts, J. J., Froebrich, D., Scholz, A., Eisloeffel, J., Campbell-White, J., Furnell, W., Stecklum, B., Urtly, T., Pickard, R., Wiersema, K., Dubovsky, P. A., Kudzej, I., Naves, R., Morales Aimar, M., Castillo Garcia, R., Vanmunster, T., Schwendeman, E., Soldan Alfaro, F. C., Johnstone, S., Gonzalez Farfan, R. & 40 others, Killestein, T., DelgadoCasal, J., Garcia de la Cuesta, F., Roberts, D., Kolb, U., Montoro, L., Licchelli, D., Escartin Perez, A., Perello Perez, C., Deldem, M., Futcher, S. R. L., Nelson, T., Dvorak, S., Mozdzierski, D., Quinn, N., Kotysz, K., Kowalska, K., Mikolajczyk, P., Fleming, G., Phillips, M., Vale, T., Dubois, F., Logie, L., Rau, S., Vanaverbeke, S., Merrikin, B., Fernandez Mananes, E., Erdelyi, E., Gonzalez Carballo, J-L., Limon Martinez, F., Long, T. P., San Segundo Delgado, A., Salto Gonzalez, J. L., Tremosa Espasa, L., Piehler, G., Crumpton, J., Billington, S. J., D'Arcy, E., Makin, S. & Dover, L., Mar 2020, In : Monthly Notices of the Royal Astronomical Society. 493, 1, p. 184-198 15 p.

    Research output: Contribution to journalArticle

  2. Decoupling the rotation of stars and gas - I. The relationship with morphology and halo spin

    Duckworth, C., Tojeiro, R. & Kraljic, K., Feb 2020, In : Monthly Notices of the Royal Astronomical Society. 492, 2, p. 1869-1886

    Research output: Contribution to journalArticle

  3. Decoupling the rotation of stars and gas - II. The link between black hole activity and simulated IFU kinematics in IllustrisTNG

    Duckworth, C., Starkenburg, T. K., Genel, S., Davis, T. A., Habouzit, M., Kraljic, K. & Tojeiro, R., Jul 2020, In : Monthly Notices of the Royal Astronomical Society. 495, 4, p. 4542–4547

    Research output: Contribution to journalArticle

  4. Equatorial anti-rotating day side wind flow in WASP-43b elicited by deep wind jets?

    Carone, L., Baeyens, R., Mollière, P., Barth, P., Vazan, A., Decin, L., Sarkis, P., Venot, O. & Henning, T., Aug 2020, In : Monthly Notices of the Royal Astronomical Society. 496, 3, p. 3582–3614 33 p.

    Research output: Contribution to journalArticle

Related by journal

  1. Monthly Notices of the Royal Astronomical Society (Journal)

    Ineke De Moortel (Member of editorial board)

    1 Jan 2019 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  2. Monthly Notices of the Royal Astronomical Society (Journal)

    Carolin Villforth (Reviewer)

    2011 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  3. Monthly Notices of the Royal Astronomical Society (Journal)

    Christiane Helling (Editor)

    2007 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  4. Monthly Notices of the Royal Astronomical Society (Journal)

    Andrew Collier Cameron (Editor)

    2005 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  5. Monthly Notices of the Royal Astronomical Society (Journal)

    Duncan Hendry Mackay (Editor)

    2003 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

ID: 268723091

Top