Results 11 to 20 of about 12,408 (264)
Star formation in dwarf irregular galaxies NGC 6822
The Astronomical Journal, 1995 Our proposed method to study the star formation histories in nearby irregulars is here applied to NGC 6822. To this purpose we have obtained accurate CCD photometry of three regions in the galaxy, reaching V$\simeq$23.5 with an accuracy of $ _{BVR}\leq$0.1 mag.
Marconi, G. +3 more
openaire +3 more sources
Journal of Geophysical Research: Biogeosciences, Volume 127, Issue 2, February 2022., 2022 Abstract Observing the environment in the vast regions of Earth through remote sensing platforms provides the tools to measure ecological dynamics. The Arctic tundra biome, one of the largest inaccessible terrestrial biomes on Earth, requires remote sensing across multiple spatial and temporal scales, from towers to satellites, particularly those ...
Peter R. Nelson +19 more
wiley +1 more source
The Full-fledged Dwarf Irregular Galaxy Leo A [PDF]
The Astrophysical Journal, 2004 9 pages, 3 figures, submitted to ...
Vansevicius, Vladas +10 more
openaire +3 more sources
Spectral Feature Extraction Using Partial and General Method
Advances in Astronomy, Volume 2021, Issue 1, 2021., 2021 With the rapid growth in astronomical spectra produced by large sky survey telescopes, traditional manual classification processes can no longer fulfill the requirements of precision and efficiency of spectral classification. There is an urgent need to employ machine learning approaches to conduct automated spectral classification tasks.
Bin Jiang +5 more
wiley +1 more source
The Astrophysical Journal Letters, 2023 Through adaptive optics (AO) imaging with the SOUL+LUCI instrument at the Large Binocular Telescope we were able to resolve, for the first time, individual stars in the gas-rich galaxy DDO68 C. This system was already suggested to be interacting with the
Francesca Annibali +9 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 Local low-metallicity dwarf galaxies are relics of the early universe and are thought to hold clues into the origins of supermassive black holes. While recent studies are uncovering a growing population of active galactic nuclei (AGNs) in dwarf galaxies,
Michael Reefe +13 more
doaj +1 more source
Stellar Populations of Dwarf Irregular Galaxies [PDF]
Symposium - International Astronomical Union, 1996 We recently completed two-color CCD photometry of resolved stars in 11 dwarf irregular galaxies (Hopp & Schulte-Ladbeck, 1995, A&AS 111, 527), selected because of their relative isolation from massive galaxies in the Kran-Korteweg – Tammann sample (1979, AN 300, 181).
R.E. Schulte-Ladbeck, Ulrich Hopp
openaire +1 more source
The Evolutionary Status of Isolated Dwarf Irregular Galaxies II. Star Formation Histories and Gas Depletion [PDF]
, 2001 The results of UBV and H alpha imaging of a large sample of isolated dwarf irregular galaxies are interpreted in the context of composite stellar population models.
Arimoto N. +12 more
core +2 more sources
The Isaac Newton Telescope Monitoring project: Stellar population in the IC 10 dwarf irregular galaxy [PDF]
Iranian Journal of Astronomy and Astrophysics, 2019 We have conducted an optical monitoring survey of IC 10 dwarf irregular galaxy in the Local Group, using the Isaac Newton Telescope (INT) with the wide-field camera (WFC), to identify the Asymptotic Giant Branch stars (AGBs).
Mahtab Gholami, Mohammad Taghi Mirtorabi
doaj +1 more source
The Interstellar Medium of Dwarf Galaxies
Galaxies, 2022 Dwarf galaxies are by far the most numerous galaxies in the Universe, showing properties that are quite different from those of their larger and more luminous cousins. This review focuses on the physical and chemical properties of the interstellar medium
Christian Henkel +2 more
doaj +1 more source