Results 61 to 70 of about 10,594 (212)

Das zirkumgalaktische Medium

Physik in unserer Zeit, Volume 56, Issue 1, Page 30-37, January 2025.
Galaxien wie die Milchstraße sind umhüllt von einem gigantischen Kokon aus diffusem Gas. Aktuelle Forschungsergebnisse belegen, dass dieses zirkumgalakische Medium eine entscheidende Rolle für die Entstehung und Entwicklung von Galaxien spielt. Zusammenfassung Als zirkumgalaktisches Medium bezeichnet man die gasförmigen Hüllen von Galaxien, die sich ...
Philipp Richter
wiley   +1 more source

The Samples and Binary Fractions of Red Supergiants in M31 and M33 by the HST Observations

The Astrophysical Journal
The binarity of red supergiants (RSGs) influences their evolution and the fate of supernovae. We investigate the binary fraction of RSGs in the Andromeda galaxy (M31) and Triangulum galaxy (M33) using photometry from the Hubble Space Telescope (HST ...
Min Dai, Shu Wang, Biwei Jiang, Ying Li
doaj   +1 more source

Critical steps in an environmental metaproteomics workflow

Environmental Microbiology, Volume 26, Issue 5, May 2024.
Metaproteomics, a potent yet underutilized tool, reveals the complexities of microbial communities. Our review emphasizes its accessibility and provides diverse workflow descriptions tailored to various environmental matrices. We aim to convince readers of its capability to unravel the structural, dynamic, and metabolic nuances within microbial ...
Daniel J. Nebauer, Leanne A. Pearson, Brett A. Neilan   +2 more
wiley   +1 more source

A dual‐omics approach on the effects of fibroblast growth factor‐2 (FGF‐2) on ventral tegmental area dopaminergic neurons in response to alcohol consumption in mice

European Journal of Neuroscience, Volume 59, Issue 7, Page 1519-1535, April 2024.
FGF‐2 knockout (KO) results in reduced alcohol consumption and preference in the two‐bottle choice mouse model over 6 weeks of 20% voluntary alcohol access. Loss of FGF‐2 leads to the downregulation of Otx2, Igf1 and Lpl, as well as the upregulation of Vgat, Lmx1a, Foxa2, Ndnf, Chrna4 and Sat1b, genes specific for DAergic subpopulations.
Leonie Hose, Alina Katharina Langenhagen, Ekaterini Kefalakes, Theresa Schweitzer, Sabrina Kubinski, Segev Barak, Andreas Pich, Claudia Grothe   +7 more
wiley   +1 more source

Probing the Disk Kinematics of M31 with DESI

Edinburgh Student Journal of Science
M31’s stellar rotation curve and disk line-of-sight dispersion is presented using kinematic data from a novel DESI M31 survey in combination with similar datasets.
Struan Stevenson
doaj   +1 more source

Radiation burst by axion star collision with star in the Andromeda Galaxy

Physics Letters B, 2022
Axion is a promising candidate of dark matter in the universe. A fraction of dark matter axion may form axion star with radius ∼102 km. We show that the axion star emits radiation burst by the collision with K and M types main sequence star in the ...
Aiichi Iwazaki
doaj   +1 more source

Molecular gas in the Andromeda galaxy [PDF]

Astronomy & Astrophysics, 2006
We present a new 12CO(J=1-0)-line survey of the Andromeda galaxy, M31, covering the bright disk with the highest resolution to date (85 pc along the major axis), observed On-the-Fly (in italics) with the IRAM 30-m telescope. We discuss the distribution of the CO emission and compare it with the distributions of HI and emission from cold dust traced at ...
Nieten, Ch., Neininger, N., Guelin, M., Ungerechts, H., Lucas, R., Berkhuijsen, E. M., Beck, R., Wielebinski, R.   +7 more
openaire   +2 more sources

Deep Optical Photometry of Six Fields in the Andromeda Galaxy [PDF]

, 2009
Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching well below the oldest main sequence turnoff in six fields of the Andromeda Galaxy. The fields fall at four positions on the southeast minor
Brown, Thomas M., Ferguson, Henry C., Guhathakurta, Puragra, Kalirai, Jason S., Kimble, Randy A., Renzini, Alvio, Rich, R. Michael, Smith, Ed, Sweigart, Allen V., VandenBerg, Don A.   +9 more
core   +1 more source

Causal theories of spacetime

Noûs, Volume 58, Issue 1, Page 202-224, March 2024.
Abstract We develop a new version of the causal theory of spacetime. Whereas traditional versions of the theory seek to identify spatiotemporal relations with causal relations, the version we develop takes causal relations to be the grounds for spatiotemporal relations. Causation is thus distinct from, and more basic than, spacetime. We argue that this
Sam Baron, Baptiste Le Bihan
wiley   +1 more source

Joint Constraints on Fuzzy and Warm Dark Matter from Satellite Populations of the Milky Way and Andromeda

The Astrophysical Journal
We perform a joint analysis of the Milky Way (MW) and Andromeda (M31) satellite populations to constrain the properties of fuzzy dark matter (FDM) and thermal-relic warm dark matter (WDM).
Jianxiang Liu, Yan Gong, Kai Liao
doaj   +1 more source