Results 51 to 60 of about 154,665 (207)

THEHERSCHELEXPLOITATION OF LOCAL GALAXY ANDROMEDA (HELGA). II. DUST AND GAS IN ANDROMEDA [PDF]

The Astrophysical Journal, 2012
We present an analysis of the dust and gas in Andromeda, using Herschel images sampling the entire far-infrared peak. We fit a modified-blackbody model to ~4000 quasi-independent pixels with spatial resolution of ~140pc and find that a variable dust-emissivity index (beta) is required to fit the data. We find no significant long-wavelength excess above
Smith, M. W. L., Eales, S. A., Gomez, H. L., Roman-Duval, J., Fritz, J., Braun, R., Baes, M., Bendo, G. J., Blommaert, J. A. D. L., Boquien, M., Boselli, A., Clements, D. L., Cooray, A. R., Cortese, L., Looze, I., Ford, G. P., Gear, W. K., Gentile, G., Gordon, K. D., Kirk, J., Lebouteiller, V., Madden, S., Mentuch, E., O'Halloran, B., Page, M. J., Schulz, B., Spinoglio, L., Verstappen, J., Wilson, C. D., Thilker, D. A.   +29 more
openaire   +5 more sources

Integrative cross‐tissue analysis unveils complement‐immunoglobulin augmentation and dysbiosis‐related fatty acid metabolic remodeling during mammalian aging

iMeta, Volume 4, Issue 3, June 2025.
Our study provides a comprehensive multi‐omics profile of aging, integrating proteomic, metabolomic, and metagenomic analyses across diverse tissues and plasma. We identified the synergistic amplification of the circulating complement system and tissue‐wide immunoglobulin accumulation as key molecular drivers of inflammaging.
Feng Zhang, Rong Li, Yasong Liu, Jinliang Liang, Yihang Gong, Cuicui Xiao, Jianye Cai, Tingting Wang, Qiang You, Jiebin Zhang, Haitian Chen, Jiaqi Xiao, Yingcai Zhang, Yang Yang, Hua Li, Jia Yao, Qi Zhang, Jun Zheng   +17 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

Resolved SPLASH Chemodynamics in Andromeda’s PHAT Stellar Halo and Disk: On the Nature of the Inner Halo along the Major Axis

The Astronomical Journal, 2023
Stellar kinematics and metallicity are key to exploring formation scenarios for galactic disks and halos. In this work, we characterized the relationship between kinematics and photometric metallicity along the line of sight to M31's disk.
Ivanna Escala, Amanda C. N. Quirk, Puragra Guhathakurta, Karoline M. Gilbert, J. Leigh Wojno, Lara Cullinane, Benjamin F. Williams, Julianne Dalcanton   +7 more
doaj   +1 more source

ANDROMEDA XXIX: A NEW DWARF SPHEROIDAL GALAXY 200 kpc FROM ANDROMEDA [PDF]

The Astrophysical Journal, 2011
We report the discovery of a new dwarf galaxy, Andromeda XXIX, using data from the recently-released Sloan Digital Sky Survey DR8, and confirmed by Gemini North telescope Multi-Object Spectrograph imaging data. And XXIX appears to be a dwarf spheroidal galaxy, separated on the sky by a little more than 15 degrees from M31, with a distance inferred from
Bell, Eric F., Slater, Colin T., Martin, Nicolas F.   +2 more
openaire   +3 more sources

Satellites and stellar streams of the Andromeda Galaxy [PDF]

, 2020
One of the theories of galactic evolution is that large structures grow, hierarchically, from the merger and accretion of smaller ones. Evidence for this lies in the spectacular stellar streams observed around the Milky Way, Andromeda and other galaxies ...
Preston, Janet
core   +1 more source

Ultra high energy cosmic rays from past activity of Andromeda galaxy [PDF]

, 2022
It is shown that the relativistic jets associated with the growth and past activity of the supermassive black hole in the Andromeda galaxy could be the main source of cosmic rays with energies above $10^{15}$ eV.
Rogovaya, S. I., Zirakashvili, V. N., Ptuskin, V. S.   +2 more
core   +1 more source

Dust in the andromeda galaxy

, 2016
This real image, taken by a satellite, shows the Andromeda galaxy. From this picture, the astronomers concluded that the Andromeda galaxy suffered a collision with the galaxy Messier 32 about 200 million years agoComponente Curricular::Educação Superior::
National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory, California Institute of Technology   +2 more
core   +1 more source

On the α/Fe Bimodality of the M31 Disks

The Astrophysical Journal Letters, 2023
An outstanding question is whether the α /Fe bimodality exists in disk galaxies other than in the Milky Way. Here we present a bimodality using our state-of-the-art galactic chemical evolution models that can explain various observations in the Andromeda
Chiaki Kobayashi, Souradeep Bhattacharya, Magda Arnaboldi, Ortwin Gerhard   +3 more
doaj   +1 more source

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