Occurrence of Weeds in an Orchard due to Cultivation of Long-Term Perennial Living Mulches
Acta Agrobotanica, 2020 The living mulch permanence along with the succession of their weed infestation in an apple orchard were evaluated at the Research Station, Wrocław University of Environmental and Life Sciences.
Maria Licznar-Małańczuk
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Connecting the local stellar halo and its dark matter density to dwarf galaxies via blue stragglers [PDF]
, 2020 The Gaia HR diagram shows the presence of apparently young stars at high tangential velocities. Using a simple analytical model I show that these stars are likely to be blue stragglers. Once normalized to red giant stars, the fraction of nearby halo blue stragglers is of order 20 percent, and remarkably close to that measured in dwarf galaxies ...
arxiv +1 more source
UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud
Advances in Astronomy, 2015 We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner
L. M. Buson +3 more
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Helium abundance determination in hii regions of blue compact dwarf galaxies
Вісник Астрономічної школи, 2001 We present detail study of helium ionic abundances of HII regions in Blue Compact Dwarf galaxies using new emissivities from [3]. On the base of new helium He/H and heavy elements abundances A/H [1, 2] different types of Y–Z dependences were analyzed ...
B. Ya. Melekh
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A Compact Population of Red Giants in the Blue Compact Dwarf Galaxy UGCA 290 [PDF]
, 2000 We present HST/WFPC2 single-star photometry for the blue dwarf galaxy UGCA 290, whose morphology is intermediate between classic iE Blue Compact Dwarfs and blue dwarfs which exhibit no red background sheet of older stars. The color-magnitude diagram of this galaxy in V and I, extending over six magnitudes, is remarkably similar to that of the star ...
arxiv +1 more source
Empirical characterization of blue dwarf galaxies
The Astronomical Journal, 1993 We present an analysis of the optical and far-infrared properties of a homogeneous sample of blue dwarf galaxies. The luminosity of the galaxies is parametrized in terms of their metallicity, size, and velocity dispersion. The environment of the galaxies is also searched for companions, finding that a large fraction of the sampled galaxies are truly ...
Ana Campos-Aguilar +2 more
openaire +2 more sources
A Stellar Population Gradient in VII Zw 403 - Implications for the Formation of Blue Compact Dwarf Galaxies [PDF]
, 1999 We present evidence for the existence of an old stellar halo in the Blue Compact Dwarf galaxy VII Zw 403. VII Zw 403 is the first Blue Compact Dwarf galaxy for which a clear spatial segregation of the resolved stellar content into a "core-halo" structure is detected.
arxiv +1 more source
A Megacam Survey of Outer Halo Satellites. II. Blue Stragglers in the Lowest Stellar Density Systems [PDF]
, 2013 We present a homogeneous study of blue straggler stars across ten outer halo globular clusters, three classical dwarf spheroidal and nine ultra-faint galaxies based on deep and wide-field photometric data taken with MegaCam on the Canada-France-Hawaii Telescope. We find blue straggler stars to be ubiquitous among these Milky Way satellites.
arxiv +1 more source
Faint Blue Objects in the Hubble Deep Field South Revealed: White Dwarfs, Subdwarfs, and Quasars [PDF]
Astrophys.J.633:1126-1141,2005, 2005 We explore the nature of the faint blue objects in the Hubble Deep Field South. We have derived proper motions for the point sources in the Hubble Deep Field South using a 3 year baseline. Combining our proper motion measurements with spectral energy distribution fitting enabled us to identify 4 quasars and 42 stars, including 3 white dwarf candidates.
arxiv +1 more source
Interpolation and Synthesis of Sparse Samples in Exoplanet Atmospheric Modeling
The Planetary Science JournalThis paper highlights methods from geostatistics that are relevant to the interpretation, intercomparison, and synthesis of atmospheric model data, with a specific application to exoplanet atmospheric modeling.
Jacob Haqq-Misra +3 more
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