Results 61 to 70 of about 390,122 (225)
Exploring the star formation histories of galaxies [PDF]
In this thesis, I explore the star formation histories of both spiral and elliptical galaxies. In Part 1,1 present an in-depth study of the star formation histories of spiral galaxies with a wide range of properties. Optical and near-infrared colours are
Bell, Eric Findlay, Bell, E.F.
core
Objective-prism and slit-spectra redshifts in a study of the distribution of galaxies [PDF]
A thorough and detailed investigation into the accuracy, reliability and consistency of the objective-prism redshift technique with changes in plate material, measuring machine and reduction techniques has been undertaken.
Parker, Quentin Andrew
core +2 more sources
Measuring the relation between star formation and galactic winds is observationally difficult. In this work we make an indirect measurement of the mass-loading factor (the ratio between the mass outflow rate and star formation rate) in low-mass galaxies ...
Erin Kado-Fong +9 more
doaj +1 more source
STRange and Odd Morphology Extragalactic Radio Sources (STROMERSs) is a new category of radio galaxies that shows extremely peculiar anatomy. A purely manual visual search is carried out for the identification of such interesting sources.
Tapan K. Sasmal +5 more
doaj +1 more source
ABSTRACT The current trend of individualized food items (nutrient content and flavor) can be particularly valuable to support people's health and well‐being in isolated environments where access to fresh foods and diverse nutrition is difficult. At the same time, bioactive compounds and micronutrients can be employed to countermeasure any health ...
Svenja Schmidt +4 more
wiley +1 more source
Low luminosity elliptical galaxies [PDF]
Long-slit spectra for the photometric axes of a sample of 14 elliptical galaxies, predominantly low-luminosity ellipticals, in the Virgo cluster and in nearby groups, are studied to investigate the galaxy kinematical structure and stellar evolutionary ...
Halliday, Claire, Halliday, C.
core
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo +6 more
wiley +1 more source
Stellar population of the irregular galaxy IC 10 [PDF]
Based on our observations with the 6-m BTA telescope at the Special Astrophysical Observatory, the Russian Academy of Sciences, and archival Hubble Space Telescope images, we have performed stellar photometry for several regions of the irregular galaxy IC 10, a member of the Local Group.
Tikhonov, N. A., Galazutdinova, O. A.
openaire +2 more sources
A complete redshift sample of galaxies [PDF]
The role of complete redshift samples is discussed with particular attention focused on the need for new deeper and better controlled surveys for statistical clustering and dynamical studies.
Bean, A.J., Bean, Adrian John
core
The stellar structure of irregular galaxies. Face-on galaxies
Stellar photometry of nearby irregular galaxies of the Local Group is used to identify and study the young and old stellar populations of these galaxies. An analysis of the spatial distributions of stars of different ages in face-on galaxies shows that the young stellar populations in irregular galaxies are concentrated toward the center, and form ...
openaire +3 more sources

