A tight N/O-potential relation in star-forming galaxies

Nicholas Fraser Boardman; Vivienne Wild; N Vale Asari

doi:10.1093/mnrasl/slae071

A tight N/O-potential relation in star-forming galaxies

Nicholas Fraser Boardman^*, Vivienne Wild, N Vale Asari

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We report a significantly tighter trend between gaseous N/O and M_*/R_e (a proxy for gravitational potential) than has previously been reported between gaseous metallicity and M_*/R_e⁠, for star-forming galaxies in the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. We argue this result to be a consequence of deeper potential wells conferring greater resistance to metal outflows while also being associated with earlier star-formation histories, combined with N/O being comparatively unaffected by metal-poor inflows. The potential–N/O relation thus appears to be both more resistant to short time-scale baryonic processes and also more reflective of a galaxy’s chemical evolution state, when compared to previously considered relations.

Original language	English
Article number	slae071
Pages (from-to)	L1-L6
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	534
Issue number	1
Early online date	27 Jul 2024
DOIs	https://doi.org/10.1093/mnrasl/slae071
Publication status	Published - Oct 2024

Keywords

ISM: abundances
ISM: general
ISM: evolution
Galaxies: ISM
Galaxies: statistics
Galaxies: abundances

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10.1093/mnrasl/slae071Licence: CC BY

Boardman-2024-A-tight-N-O-MNRAS-534-1-L1-slae071-CCBY
Copyright © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Final published version, 1.68 MBLicence: CC BY

Cite this

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title = "A tight N/O-potential relation in star-forming galaxies",

abstract = "We report a significantly tighter trend between gaseous N/O and M*/Re (a proxy for gravitational potential) than has previously been reported between gaseous metallicity and M*/Re⁠, for star-forming galaxies in the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. We argue this result to be a consequence of deeper potential wells conferring greater resistance to metal outflows while also being associated with earlier star-formation histories, combined with N/O being comparatively unaffected by metal-poor inflows. The potential–N/O relation thus appears to be both more resistant to short time-scale baryonic processes and also more reflective of a galaxy{\textquoteright}s chemical evolution state, when compared to previously considered relations.",

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author = "Boardman, {Nicholas Fraser} and Vivienne Wild and Asari, {N Vale}",

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AU - Wild, Vivienne

AU - Asari, N Vale

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N2 - We report a significantly tighter trend between gaseous N/O and M*/Re (a proxy for gravitational potential) than has previously been reported between gaseous metallicity and M*/Re⁠, for star-forming galaxies in the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. We argue this result to be a consequence of deeper potential wells conferring greater resistance to metal outflows while also being associated with earlier star-formation histories, combined with N/O being comparatively unaffected by metal-poor inflows. The potential–N/O relation thus appears to be both more resistant to short time-scale baryonic processes and also more reflective of a galaxy’s chemical evolution state, when compared to previously considered relations.

AB - We report a significantly tighter trend between gaseous N/O and M*/Re (a proxy for gravitational potential) than has previously been reported between gaseous metallicity and M*/Re⁠, for star-forming galaxies in the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey. We argue this result to be a consequence of deeper potential wells conferring greater resistance to metal outflows while also being associated with earlier star-formation histories, combined with N/O being comparatively unaffected by metal-poor inflows. The potential–N/O relation thus appears to be both more resistant to short time-scale baryonic processes and also more reflective of a galaxy’s chemical evolution state, when compared to previously considered relations.

KW - ISM: abundances

KW - ISM: general

KW - ISM: evolution

KW - Galaxies: ISM

KW - Galaxies: statistics

KW - Galaxies: abundances

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DO - 10.1093/mnrasl/slae071

M3 - Article

SN - 1745-3925

VL - 534

SP - L1-L6

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

M1 - slae071

ER -

A tight N/O-potential relation in star-forming galaxies

Abstract

Keywords

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