Results 61 to 70 of about 22,088 (260)
Connecting clustering and the cosmic web
Astronomy & AstrophysicsContext. Cosmological simulations predict significant secondary dependences of halo clustering on a variety of internal halo properties, and on environmental factors.
Rodriguez Facundo +1 more
doaj +1 more source
Limnology and Oceanography: Methods, EarlyView.Abstract Benthic incubation chambers enclose a known volume of water overlying a known area to measure water chemistry changes and are typically used to quantify the metabolic activity of benthic organisms or communities. Here we present an economical benthic incubation chamber for shallow, low‐flow environments, built using off‐the‐shelf components ...
Luke D. Groff +2 more
wiley +1 more source
A Nearby Isolated Dwarf: Star Formation and Structure of ESO 006–001
The Astrophysical Journal, 2023 Observations with the Hubble Space Telescope unexpectedly revealed that the dwarf galaxy ESO 006–001 is a near neighbor to the Local Group at a distance of 2.70 ± 0.11 Mpc.
Lidia N. Makarova +6 more
doaj +1 more source
Germanium‐Based Mid‐Infrared Integrated Photonics
Laser &Photonics Reviews, EarlyView.The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini +6 more
wiley +1 more source
A Merger within a Merger: Chandra Pinpoints the Short GRB 230906A in a Peculiar Environment
The Astrophysical Journal LettersWe report the precise X-ray localization of GRB 230906A, a short-duration ( T _90 ∼ 0.9 s) gamma-ray burst (GRB) with no optical or radio counterpart.
S. Dichiara +8 more
doaj +1 more source
People and Nature, EarlyView.Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons +9 more
wiley +1 more source
Galaxy Assembly Bias in the Stellar-to-halo Mass Relation for Red Central Galaxies from SDSS
The Astrophysical JournalWe report evidence of galaxy assembly bias—the correlation between galaxy properties and biased secondary halo properties at fixed halo mass ( M _H )—in the stellar-to-halo mass relation for red central galaxies from the Sloan Digital Sky Survey.
Grecco A. Oyarzún +4 more
doaj +1 more source
Optical Observations of M81 Galaxy Group in Narrow Band [SII] and H_alpha Filters: Holmberg IX [PDF]
Serbian Astronomical Journal, 2009 We present observations of the nearby tidal dwarf galaxy Holmberg IX in M81 galaxy group in narrow band [SII] and H$alpha$ filters, carried out in March and November 2008 with the 2m RCC telescope at NAO Rozhen, Bulgaria.
Arbutina, B. +5 more
doaj
DISCRETE X-RAY SOURCES IN GALAXY CLUSTERS
Odessa Astronomical Publications, 2020 Current studies of extragalactic X-ray sources using data from orbital observatory XMM- Newton are at the front line of X-ray astronomy. Resolution capacity of the observatory instruments enable to detect separate X-ray sources in the close galaxies.
A. V. Tugay +2 more
doaj +1 more source
Properties of intra-group stars and galaxies in galaxy groups: ‘normal’ versus ‘fossil’ groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Cosmological LCDM simulations of 12 M_vir~10^14 Msun galaxy groups have been performed, invoking star formation, chemical evolution with non-instantaneous recycling, metallicity dependent radiative cooling, strong star-burst driven galactic super-winds and effects of a meta-galactic UV field. At z=0, intra-group light (IGL) fractions are found to be 12-
openaire +4 more sources