Seppo Laine

TL;DR: The Infrared Array Camera (IRAC) is one of three focal plane instruments on the Spitzer Space Telescope as mentioned in this paper, which is a four-channel camera that obtains simultaneous broadband images at 3.6, 4.5, 5.8, and 8.0 m.

TL;DR: In this article, the authors used the Hubble Space Telescope I-band images of a sample of 77 nearby late-type spiral galaxies with low inclination to study the frequency and properties of nuclear star clusters.

TL;DR: In this article, the authors presented new HST I-band images of a sample of 77 nearby, late-type spiral galaxies with low inclination, and used the fitted isophotes at radii larger than 2" to check whether the location of the cluster coincides with the photocenter of the galaxy, and confirm that in nearly all cases, they are truly dealing with ''nuclear'' star clusters.

TL;DR: In this article, the observed properties of nested and single stellar bar systems in disk galaxies were analyzed for the first time, and it was shown that a signi-cant fraction of the sample galaxies, 17% − 4%, have more than one bar, and that 28% − 5% of barred galaxies have nested bars.

TL;DR: In this article, the authors present human-supervised multi-component decompositions, which include, when judged appropriate, a central point source, bulge, disk, and bar components.