Results 41 to 50 of about 1,426,420 (265)

Spectroscopy of Three SBS Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1996
Three galaxies from Second Byurakan Sky Survey have been studied. The spectra of these galaxies were obtained at 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences. For these objects line widths and emission line ratios were measured and ionization mechanism and chemical abundances were determined.
openaire   +1 more source

The clustering of galaxies in hierarchical galaxy formation models [PDF]

open access: yes, 2010
Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core  

When is a Bulge Not a Bulge? Revealing the Satellite Nature of NGC 5474’s Bulge

open access: yesThe Astrophysical Journal
A satellite galaxy of the nearby spiral M101, NGC 5474 has a prominent bulge offset from the kinematic center of the underlying star-forming disk that has gained attention in recent years.
Ray Garner III   +2 more
doaj   +1 more source

Minor Mergers Are Not Enough: The Importance of Major Mergers during Brightest Cluster Galaxy Assembly

open access: yesThe Astrophysical Journal Supplement Series, 2023
We investigate the roles of major and minor mergers during brightest cluster galaxy (BCG) assembly using surface brightness profiles, line indices, and fundamental plane relations.
Matthias Kluge, Ralf Bender
doaj   +1 more source

Spectroscopy of Galaxies in the Bootes Void

open access: yesThe Astronomical Journal, 2002
We investigate the physical properties of a sample of 26 galaxies in the Bootes void and classify these galaxies based on the emission lines in their spectra. Fourteen galaxies are classified as H II galaxies with properties similar to field H II galaxies. Two of these galaxies, 1432+5302 and 1507+4554, are extreme starburst galaxies.
Shawn Cruzen   +4 more
openaire   +2 more sources

Mapping the Active Galactic Nucleus Effects on the Stellar and Gas Properties of NGC 5806

open access: yesThe Astrophysical Journal
It is commonly accepted that active galactic nuclei (AGNs) have a strong impact upon the evolution of their host galaxies, but the processes by which they do so are not fully understood.
Sophie L. Robbins   +2 more
doaj   +1 more source

Outlier Detection in the DESI Bright Galaxy Survey

open access: yesThe Astrophysical Journal Letters, 2023
We present an unsupervised search for outliers in the Bright Galaxy Survey (BGS) data set from the DESI Early Data Release. This analysis utilizes an autoencoder to compress galaxy spectra into a compact, redshift-invariant latent space, and a ...
Yan Liang   +5 more
doaj   +1 more source

The Crystal Structures of High‐ and Low‐Temperature Silver Pyrophosphate: Structural Instability and Its Consequences

open access: yesZeitschrift für anorganische und allgemeine Chemie, EarlyView.
The crystal structures of the high‐temperature and low‐temperature phases of silver pyrophosphate are reported. The structural results are complemented by thermal analysis, vibrational and 31P‐MAS‐NMR spectroscopy studies, and density functional theory calculations.
Matthias Weil   +8 more
wiley   +1 more source

Spatially resolved spectroscopy of passive spiral galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2007
MNRAS,382 ...
Ishigaki, Miho   +2 more
openaire   +2 more sources

Viral Genome Sequencing Tutorial

open access: yes, 2018
<p>Datasets required for the Galaxy Training on Viral Genome Sequencing</p ...
Galaxy Training Network (8220705)   +1 more
core   +1 more source

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