Results 81 to 90 of about 16,102 (217)

Ongoing Galactic Accretion: Simulations and Observations of Condensed Gas in Hot Halos [PDF]

, 2007
Ongoing accretion onto galactic disks has been recently theorized to progress via the unstable cooling of the baryonic halo into condensed clouds. These clouds have been identified as analogous to the High-Velocity Clouds (HVCs) observed in HI in our ...
Braun R., J. E. G. Peek, Jesper Sommer‐Larsen, M. E. Putman, Muller C. A., Rocha-Pinto H. J., Wakker B. P., White S. D. M.   +7 more
core   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Interaction of HVCs with the Outskirts of Galactic Disks: Turbulence [PDF]

EAS Publications Series, 2012
4 pages, 3 figures, Proceedings of "The Role of Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall?" (Ed. M.
Santillan, A., Sanchez-Salcedo, F. J., Kim, J., Franco, J., Hernandez-Cervantes, L.   +4 more
openaire   +2 more sources

Prolonged Release of IL‐10 From Enzyme‐Mediated Poly‐l‐(Tyrosine‐co‐Phenylalanine) Nanocrystals Enhances Stability and Modulates Inflammatory Responses

Biopolymers, Volume 117, Issue 2, March 2026.
Schematic representation of enzyme‐mediated peptide nanocrystal formation and IL‐10 encapsulation, providing stabilized and sustained cytokine delivery that modulates macrophage phenotype and reduces inflammatory responses. ABSTRACT Protease‐catalyzed synthesis of a peptide composed of l‐tyrosine and l‐phenylalanine (2.2:1 M ratio) was achieved in a ...
Fátima Landa‐Tencle, Carmen G. Hernández‐Valencia, Fernando Guzmán‐Lagunes, Carmina Montiel, Yoan Cuellar‐Entenza, Carlos Guerrero‐Sánchez, Steffi Stumpf, Stephanie Hoeppener, Ulrich S. Schubert, Yessica Zamudio‐Cuevas, Roberto Sánchez‐Sánchez, Miquel Gimeno   +11 more
wiley   +1 more source

Studies of HVC Plasticity in Adult Canaries Reveal Social Effects and Sex Differences as Well as Limitations of Multiple Markers Available to Assess Adult Neurogenesis.

PLoS ONE, 2017
In songbirds, neurogenesis in the song control nucleus HVC is sensitive to the hormonal and social environment but the dynamics of this process is difficult to assess with a single exogenous marker of new neurons. We simultaneously used three independent
Olesya T Shevchouk, Gregory F Ball, Charlotte A Cornil, Jacques Balthazart   +3 more
doaj   +1 more source

A search for soft X-ray emission associated with prominent high-velocity-cloud complexes [PDF]

, 1998
We correlate the ROSAT 1/4 keV all-sky survey with the Leiden/Dwingeloo HI survey, looking for soft X-ray signatures of prominent high-velocity-cloud (HVC) complexes.
Burton, W. B., Egger, R., Freyberg, M. J., Hartmann, Dap, Kalberla, P. M. W., Kerp, J., Mebold, U., Pietz, J.   +7 more
core   +2 more sources

IR diagnostics of embedded jets: velocity resolved observations of the HH34 and HH1 jets

, 2008
We present VLT-ISAAC medium resolution spectroscopy of the HH34 and HH1 jets. Our aim is to derive the kinematics and the physical parameters and to study how they vary with jet velocity.
Bacciotti, F., Eisloeffel, J., Giannini, T., Lopez, R. Garcia, Nisini, B., Podio, L.   +5 more
core   +1 more source

Effect of WO3 and Fe2O3 Additives on H2‐SCR Over Pt/SiO2─Al2O3 Catalysts: An Operando DRIFTS Investigation

ChemCatChem, Volume 18, Issue 6, 27 March 2026.
WO3 addition on Pt/SiO2─Al2O3 promotes (i) H2 activation at low temperature with higher N2 selectivity and (ii) NH3‐SCR, leading to the suppression of ammonia emissions. Fe2O3 presents reverse effects. N2O emission at low T is attributed to the formation and decomposition of the NO dimer, while N2O emissions at higher temperatures are mainly associated
Amira Ben Attia, Fabien Can, Xavier Courtois   +2 more
wiley   +1 more source

Highly Ionized High Velocity Clouds: Intergalactic Gas in the Local Group or Distant Gas in the Galactic Halo? [PDF]

, 1998
We have recently identified several high velocity (V < -100 km/s) clouds in the directions of Mrk 509 and PKS 2155-304 that have unusual ionization properties.
Bergeron J., Blair D. Savage, Bland-Hawthorn J., Bomans D. J., Cohen R. J., de Boer K. S., Edward M. Murphy, Kenneth R. Sembach, Limin Lu, Mirabel I. F., Moore B., Oort J. H., Petitjean P., Songaila A., Wakker B. P., Walborn N. R.   +15 more
core   +2 more sources

Constraints on the Space Density of Extragalactic HVCs

, 2000
High Velocity Clouds (HVCs) have recently attracted renewed attention as being long lived, massive dark matter dominated clouds of primordial composition distributed throughout the Local Group. In this picture the HVCs would contain a few times 10^7 M_sun of HI and would be at distances of a few hundred kpc to 1.5 Mpc from the Local Group barycenter ...
openaire   +3 more sources