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Inner bars also buckle. The MUSE TIMER view of the double-barred galaxy NGC 1291

Méndez-Abreu, J. and de Lorenzo-Cáceres, A. and Gadotti, D. A. and Fragkoudi, F. and van de Ven, G. and Falcón-Barroso, J. and Leaman, R. and Pérez, I. and Querejeta, M. and Sánchez-Blázquez, P. and Seidel, M. (2019) Inner bars also buckle. The MUSE TIMER view of the double-barred galaxy NGC 1291. Monthly Notices of the Royal Astronomical Society: Letters, 482 (1). L118-L122. ISSN 1745-3925. doi:10.1093/mnrasl/sly196.

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Double bars are thought to be important features for secular evolution in the central regions of galaxies. However, observational evidence about their origin and evolution is still scarce. We report on the discovery of the first Box/Peanut (B/P) structure in an inner bar detected in the face-on galaxy NGC 1291. We use the integral field data obtained from the MUSE spectrograph within the TIMER project. The B/P structure is detected as bi-symmetric minima of the h_4 moment of the line-of-sight velocity distribution along the major axis of the inner bar, as expected from numerical simulations. Our observations demonstrate that inner bars can follow a similar evolutionary path as outer bars, undergoing buckling instabilities. They also suggest that inner bars are long-lived structures, thus imposing tight constraints to their possible formation mechanisms.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Méndez-Abreu, J.0000-0002-8766-2597
de Lorenzo-Cáceres, A.0000-0002-9744-3486
van de Ven, G.0000-0003-4546-7731
Querejeta, M.0000-0002-0472-1011
Additional Information:© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model ( Accepted 2018 September 30. Received 2018 September 27; in original form 2018 August 3. Published: 18 October 2018. We thank the anonymous referee and the scientific editor for her/his many valuable comments that helped to improve this paper. AdLC and JMA thank ESO for the warm hospitality during a science visit when part of this work was done. JMA acknowledges support from the Spanish Ministerio de Economia y Competitividad (MINECO) by the grant AYA2017-83204-P. AdLC and J. F-B acknowledge support from MINECO grant AYA2016-77237-C3-1-P. GvdV acknowledges funding from the European Research Council (ERC) under grant agreement No 724857 (Consolidator Grant ArcheoDyn). PSB acknowledges support from MINECO grant AYA2016-77237-C3-2-P. Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme 097.B-0640(A).
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Ministerio de Economía y Competitividad (MINECO)AYA2017-83204-P
Ministerio de Economía y Competitividad (MINECO)AYA2016-77237-C3-1-P
European Research Council724857
Ministerio de Economía y Competitividad (MINECO)AYA2016-77237-C3-2-P
Subject Keywords:techniques: spectroscopic – galaxies: evolution – galaxies: individual: NGC 1291 – galaxies: kinematics and dynamics – galaxies: structure
Issue or Number:1
Record Number:CaltechAUTHORS:20190905-124745347
Persistent URL:
Official Citation:J Méndez-Abreu, A de Lorenzo-Cáceres, D A Gadotti, F Fragkoudi, G van de Ven, J Falcón-Barroso, R Leaman, I Pérez, M Querejeta, P Sánchez-Blazquez, M Seidel, Inner bars also buckle. The MUSE TIMER view of the double-barred galaxy NGC 1291, Monthly Notices of the Royal Astronomical Society: Letters, Volume 482, Issue 1, January 2019, Pages L118–L122,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98435
Deposited By: Tony Diaz
Deposited On:05 Sep 2019 20:03
Last Modified:16 Nov 2021 17:39

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