Selçuk Topal
CO Tully–Fisher relation of star-forming galaxies at = 0.05–0.3
Topal, Selçuk; Bureau, Martin; Tiley, Alfred L.; Davis, Timothy A.; Torii, Kazufumi
Authors
Martin Bureau
Alfred L. Tiley
Timothy A. Davis
Kazufumi Torii
Abstract
The Tully–Fisher relation (TFR) is an empirical relation between galaxy luminosity and rotation velocity. We present here the first TFR of galaxies beyond the local Universe that uses carbon monoxide (CO) as the kinematic tracer. Our final sample includes 25 isolated, non-interacting star-forming galaxies with double-horned or boxy CO integrated line profiles located at redshifts z ≤ 0.3, drawn from a larger ensemble of 67 detected objects. The best reverse Ks-band, stellar mass and baryonic mass CO TFRs are, respectively, MKs = (−8.4 ± 2.9)[log ( W50/km s−1 sin i ) − 2.5] + (−23.5 ± 0.5), log (M/M) = (5.2 ± 3.0)[log ( W50/km s−1 sin i ) − 2.5] + (10.1 ± 0.5) and log (Mb/M) = (4.9 ± 2.8)[log ( W50/km s−1 sin i ) − 2.5] + (10.2 ± 0.5), where MKs is the total absolute Ks-band magnitude of the objects, M and Mb their total stellar and baryonic masses, and W50 the width of their line profile at 50 per cent of the maximum. Dividing the sample into different redshift bins and comparing to the TFRs of a sample of local (z = 0) star-forming galaxies from the literature, we find no significant evolution in the slopes and zero-points of the TFRs since z ≈ 0.3, this in either luminosity or mass. In agreement with a growing number of CO TFR studies of nearby galaxies, we more generally find that CO is a suitable and attractive alternative to neutral hydrogen (HI). Our work thus provides an important benchmark for future higher redshift CO TFR studies.
Citation
Topal, S., Bureau, M., Tiley, A. L., Davis, T. A., & Torii, K. (2018). CO Tully–Fisher relation of star-forming galaxies at = 0.05–0.3. Monthly Notices of the Royal Astronomical Society, 479(3), 3319-3334. https://doi.org/10.1093/mnras/sty1617
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 15, 2018 |
Online Publication Date | Jun 19, 2018 |
Publication Date | Sep 21, 2018 |
Deposit Date | Aug 23, 2018 |
Publicly Available Date | Mar 29, 2024 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 479 |
Issue | 3 |
Pages | 3319-3334 |
DOI | https://doi.org/10.1093/mnras/sty1617 |
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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2018 Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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