Do spiral arms enhance star formation efficiency? | Astronomy & Astrophysics (A&A)

Home

All issues

Volume 687 (July 2024)

A&A, 687 (2024) A293

Full HTML

Open Access

Table 2.

Effect of including atomic gas on arm/interarm contrasts.

	Σ_gas contrast	SFE contrast
H I	$1 . 22_{- 0.21}^{+ 0.57}$ $1.22_{-0.21}^{+0.57}$	$1 . 21_{- 0.41}^{+ 1.05}$ $1.21_{-0.41}^{+1.05}$

H I+H₂	$1 . 26_{- 0.27}^{+ 0.88}$ $1.26_{-0.27}^{+0.88}$	$1 . 09_{- 0.29}^{+ 0.49}$ $1.09_{-0.29}^{+0.49}$

H₂ (H I galaxies)	$1 . 31_{- 0.35}^{+ 1.31}$ $1.31_{-0.35}^{+1.31}$	$1 . 01_{- 0.24}^{+ 0.36}$ $1.01_{-0.24}^{+0.36}$

H₂ high resol. (H I galaxies)	$2 . 43_{- 1.08}^{+ 3.24}$ $2.43_{-1.08}^{+3.24}$	$1 . 17_{- 0.55}^{+ 1.05}$ $1.17_{-0.55}^{+1.05}$

Σ_mol/Σ_atom	$1 . 13_{- 0.27}^{+ 0.55}$ $1.13_{-0.27}^{+0.55}$	–

Notes. Gas and SFE contrasts (median and 16th–84th percentile range, measured on galactocentric rings of 500 pc width). Limited to 15 spiral galaxies where H I observations achieve a spatial resolution better than 2.5 kpc.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.