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Spectral classification with the International Ultraviolet Explorer: An atlas of B-type spectra [PDF]

open access: yes
New criteria for the spectral classification of B stars in the ultraviolet show that photospheric absorption lines in the 1200-1900A wavelength region can be used to classify the spectra of B-type dwarfs, subgiants, and giants on a 2-D system consistent ...
Rountree, Janet, Sonneborn, George
core   +1 more source

Mid-infrared Galaxy Morphology from the Spitzer Survey of Stellar Structure in Galaxies (S^4G): The Imprint of the De Vaucouleurs Revised Hubble-Sandage Classification System at 3.6 μm [PDF]

open access: yes, 2010
Spitzer Space Telescope Infrared Array Camera imaging provides an opportunity to study all known morphological types of galaxies in the mid-IR at a depth significantly better than ground-based near-infrared and optical images.
Aravena, Manuel   +20 more
core  

III.5 Stellar classification in CoRoT faint stars fields [PDF]

open access: hybrid, 2020
C. Damiani   +4 more
openalex   +1 more source

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