English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The infrared deep sample (IDS), in the north ecliptical polar region (NEPR),is the first complete, far--IR selected sample, on which numerous studies ofgalaxy evolution are based. Here we present and analyze the spectralclassification of several galaxies in the IDS sample together with rotationcurves which allow estimating the lower mass limits of a subsample of objects.We measured fluxes and intensity ratios of the emission lines in the visibleregion of the spectrum (lambda 4000-9000 A) for 75 galaxy members. Moreover,for some of them (55%), the spectra obtained with the Keck II telescope havesufficient wavelength and spatial resolution to derive their rotation curve.These galaxies turn out to be disk like systems, with a high fraction (~50%) ofinteracting systems. The spectroscopic classification of 42 galaxies, using theemission-line ratio diagnostic diagrams, shows that the NEPR sample ispredominantly composed of starburst galaxies (71%), while the fraction of AGNs(7%) and LINERs (21%) is small. The dynamical analysis allows us to estimatethe lower mass limits of 39 galaxies. The rest-frame FIR luminositydistribution of these galaxies spans the same range as that of the FIR selectedcomplete sample, i.e. three orders of magnitude, with the same mean value,log(L_FIR)=10.2. This emphasizes that such galaxies represent FIR properties ofthe whole sample well. Moreover, their optical properties are typical of thesample itself since 62% of these belong to the 60mu selected complete sample.

A multiwavelength study of the IRAS Deep Survey galaxy sample III. Spectral classification and dynamical properties