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Table · dataset · 2026

The DiskMass Survey (DMS). XI. Full Ha sample

Listed in IVOA Registry (Virtual Observatory)

We present H{alpha}-region integral-field spectroscopy for 137 low-inclination, intermediate to late-type galaxies.

Description

Spectroscopic data, obtained with SparsePak and the Bench Spectrograph on the WIYN 3.5m telescope, span 6475-6880 {AA} with an instrumental resolution of 13km/s ({sigma}). The spectral range includes H{alpha} and [NII]{lambda}{lambda}6548,6584 for every source, and in most cases includes [SII]{lambda}{lambda}6717,6731.

We present and publicly release 18288 calibrated spectra and visually inspected Gaussian line fits to the H{alpha} emission. Most measurements yield a signal-to-noise ratio above 5 in integrated H{alpha} line flux, adequate to derive reliable line centroids and widths. Second kinematic components are required to adequately describe the emission-line profile in 15% of reliable data.

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The H{alpha} velocity dispersion distribution peaks at 18km/s, modestly increasing with H{alpha} surface brightness, reaching 20km/s at {Sigma}H{alpha}=10^40^erg/s/kpc^2^. Lower-flux secondary components, when present, have widths of ~50km/s. These results agree well with previous echelle measurements of nearby galaxies.

Velocity-field analysis yields kinematic inclinations, with a sample mean of 26{deg}. Large kinematic asymmetries systematically affect kinematic inclination estimates in a small fraction of our sample. When deviations from circular motion are below 10% of the projected velocity, kinematic inclinations are consistent, within errors, to estimates from inverting the Tully-Fisher relation.

This confirms previous disk-submaximality estimates for galaxies with regular kinematics based on inclinations derived from inverting the Tully-Fisher relation.

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Documentation and papers

Catalogue records · 2

Topics

Stated by source
Infrared · Optical
Provenance · 1 source records, 10 field assertions
SourceKeyLast seenRaw
IVOA Registry (Virtual Observatory)ivo://cds.vizier/j/apjs/276/5913 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · IVOA Registryconnector:ivoa_registry@1.0.0
concepts[field].anzsrc:field:510109enrichment · IVOA Registrytaxonomy-embedding@1.1.0title+keywords+description (78%)
concepts[field].local:field:astronomymapping · IVOA Registryconnector:ivoa_registry@1.0.0
concepts[modality].ivoa_waveband:infraredsource · IVOA Registryconnector:ivoa_registry@1.0.0
concepts[modality].ivoa_waveband:opticalsource · IVOA Registryconnector:ivoa_registry@1.0.0
descriptionsource · IVOA Registryconnector:ivoa_registry@1.0.0rr.resource.res_description
license_textsource · IVOA Registryconnector:ivoa_registry@1.0.0
publication_datesource · IVOA Registryconnector:ivoa_registry@1.0.0
titlesource · IVOA Registryconnector:ivoa_registry@1.0.0rr.resource.res_title
updated_datesource · IVOA Registryconnector:ivoa_registry@1.0.0