Results 71 to 80 of about 126,212 (334)
Chemical evolution of dwarf spheroidal and blue compact galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 We studied the chemical evolution of Dwarf Spheroidal (dSph) and Blue Compact Galaxies (BCGs) by means of comparison between the predictions of chemical evolution models and several observed abundance ratios. Detailed models with up to date nucleosynthesis taking into account the role played by supernovae of different types (II, Ia) were developed for ...
LANFRANCHI G. +1 more
openaire +3 more sources
The Future of Research in Cognitive Robotics: Foundation Models or Developmental Cognitive Models?
Advanced Robotics Research, EarlyView.Research in cognitive robotics founded on principles of developmental psychology and enactive cognitive science would yield what we seek in autonomous robots: the ability to perceive its environment, learn from experience, anticipate the outcome of events, act to pursue goals, and adapt to changing circumstances without resorting to training with ...
David Vernon
wiley +1 more source
Helium-rich EHB Stars in Globular Clusters
, 2003 Recent UV observations of the most massive Galactic globular clusters show a significant population of hot stars below the zero-age HB (``blue hook'' stars), which cannot be explained by canonical stellar evolution.
Dreizler, S. +3 more
core +1 more source
The Post-Common Envelope and Pre-Cataclysmic Binary PG 1224+309 [PDF]
, 1998 We have made extensive spectroscopic and photometric observations of PG 1224+309, a close binary containing a DA white dwarf primary and an M4+ secondary. The H alpha line is in emission due to irradiation of the M-star by the hot white dwarf and is seen
Chavira E. +13 more
core +3 more sources
Gas-rich LSB Galaxies – Progenitors of Blue Compact Dwarfs? [PDF]
International Astronomical Union Colloquium, 1999 AbstractWe analyze deep CCD images of nearby Blue Compact Dwarf (BCD) galaxies in an attempt to understand the nature of the progenitors which are hosting the current burst of star formation. In particular, we ask whether BCDs are hosted by normal or low-surface-brightness dI galaxies. We conclude that BCDs are in fact hosted by gas-rich galaxies which
Salzer, John J., Norton, Stuart A.
openaire +2 more sources
Directing the Mobility of Guest Molecules in Nanoporous Materials by Linearly Polarized Light
Advanced Science, EarlyView.The polarization of light is introduced as a further parameter to dynamically and reversibly control the properties of a photoresponsive nanoporous material. It was used to control the mobility of the guest molecules in the pores of a metal–organic framework.
Taher Al Najjar +11 more
wiley +1 more source
The Astrophysical JournalNearby blue compact dwarf galaxies (BCDs) are considered analogs to objects from the Epoch of Reionization revealed by JWST, having similarly low stellar masses, low metallicities, and high specific star formation rates.
Matilde Mingozzi +21 more
doaj +1 more source
χ Values for Blue Emission Lines in M Dwarfs [PDF]
Publications of the Astronomical Society of the Pacific, 2008 9 pages, 5 figures, in November 2008 issue of ...
West, Andrew A., Hawley, Suzanne L.
openaire +2 more sources
Subicular Astrocytes Govern Seizure‐Impaired Fear Memory
Advanced Science, EarlyView.Astrocytes in dorsal subiculum act as a critical modulator of seizure‐associated cognitive dysfunction, operating through a Ca2+‐dependent adenosine‐linked astrocyte‐neuron signaling pathway that disrupts neuronal circuit homeostasis. This research highlights the potential of astrocyte‐targeted interventions as a therapeutic strategy, moving beyond the
Yuying Shao +15 more
wiley +1 more source
The Plant Pathology Journal, 2016 The cotton leafroll dwarf virus (CLRDV) is one of the most devastating pathogens of cotton. This malady, known as cotton blue disease, is widespread in South America where it causes huge crop losses. Recently the disease has been reported from India.
Arup Kumar Mukherjee +2 more
doaj +1 more source