Results 51 to 60 of about 1,265,321 (271)

Core Revelations: The Star Formation and Active Galactic Nucleus Connection at the Heart of NGC 7469

The Astrophysical Journal
We investigate the star formation–active galactic nucleus (AGN) connection in the Seyfert 1 NGC 7469 using James Webb Space Telescope mid-infrared spectroscopic integral field unit (IFU) data.
Léa M. Feuillet, Steve Kraemer, Marcio B. Meléndez, Travis C. Fischer, Henrique R. Schmitt, James N. Reeves, Anna Trindade Falcão   +6 more
doaj   +1 more source

ChAInGeS: The Chandra Arp Interacting Galaxies Survey

, 2011
We have conducted a statistical analysis of the ultra-luminous X-ray point sources (ULXs; L(X) >= 10^39 erg/s) in a sample of galaxies selected from the Arp Atlas of Peculiar Galaxies.
Abazajian, Alonso-Herrero, Alonso-Herrero, Arp, Barton, Barton Gillespie, Begelman, Beverly J. Smith, Casosola, Colbert, Curtis Struck, de Vaucouleurs, Donzelli, Douglas A. Swartz, Duc, Duc, Ellison, Evans, Gao, Haan, Hancock, Imanishi, Jacob A. Burleson, Jester, Kennicutt, King, Kuntz, Lehmer, Liu, Liu, Liu, Liu, Lucero, Michael A. Nowak, Mirabel, Modica, Moretti, Moustakas, Moustakas, Mukai, Norris, Olivia Miller, Pakull, Pakull, Parma, Parra, Petric, Ptak, Ptak, Richards, Rothberg, Schlegel, Sekiguchi, Silverman, Smith, Smith, Smith, Smith, Smith, Stoughton, Struck, Surace, Swartz, Swartz, Swartz, Swartz, Tao, Tennant, Terashima, Veilleux, Werk, Xu, Zezas, Zhang, Zombeck   +74 more
core   +1 more source

Dynamic Chiral Plasmonic Systems‐Based on Spiropyran Derivatives and Gold Nanorods

Advanced Materials Interfaces, EarlyView.
Soft chiral plasmonic nanocomposites are prepared by embedding gold nanorods into spiropyran‐based supramolecular gels. The system self‐assembles into helical structures, enabling plasmonic circular dichroism. When illuminated with UV light spiropyran–merocyanine isomerization occurs, inducing reversible nanoscale reorganization and modulation of the ...
Ewelina Tomczyk, Maciej Bagiński, Dorota Szepke, Wiktor Lewandowski, Michał Wójcik   +4 more
wiley   +1 more source

Energetic galaxy-wide outflows in high-redshift ultraluminous infrared galaxies hosting AGN activity [PDF]

, 2012
We present integral field spectroscopy observations, covering the [O iii] λλ4959, 5007 emission-line doublet of eight high-redshift (z = 1.4–3.4) ultraluminous infrared galaxies (ULIRGs) that host active galactic nucleus (AGN) activity, including known ...
C. Harrison, D. Alexander, A. M. Swinbank, I. Smail, S. Alaghband-Zadeh, F. Bauer, S. Chapman, A. Moro, R. Hickox, R. Ivison, K. Menéndez-Delmestre, J. Mullaney, N. Nesvadba   +12 more
semanticscholar   +1 more source

Mid-infrared Variability in Nearby Galaxies from the MaNGA Sample

The Astrophysical Journal
We use mid-infrared variability in galaxies to search for active galactic nuclei (AGN) in the local universe. We use a sample of 10,220 galaxies from the Mapping Nearby Galaxies at Apache Point Observatory survey, part of the Sloan Digital Sky Survey ...
Aashay Pai, Michael R. Blanton, John Moustakas   +2 more
doaj   +1 more source

Optical Properties of 4248 IRAS Galaxies

, 2005
We have investigated optical properties of 4248 infrared galaxies (IRGs) by positionally matching data from the IRAS and the SDSS DR3. Our sample includes 3 hyper luminous infrared galaxies (L >10^13Lsun) and 178 ultra luminous infrared galaxies (10 ...
Abazajian, Allen, Arribas, Baldry, Balogh, Barnes, Barnes, Bekki, Bekki, Bekki, Bekki, Bekki, Bennett, Blake, Blanton, Borne, Borne, Bruzual, Bushouse, Clements, Cohen, Colina, Condon, Cui, Doyon, Flores, Genzel, Genzel, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Hopkins, Hutchings, Keel, Kennicutt, Kewley, Kewley, Kim, Kim, Kim, Kim, Kormendy, Lawrence, Leech, Lutz, Makino, Mihos, Mihos, Miller, Moshir, Murphy, Nagar, Neugebauer, Ostriker, Quintero, Sanders, Sanders, Sanders, Sanders, Sanders, Sarazin, Scoville, Shimasaku, Soifer, Soifer, Soifer, Stanford, Stoughton, Strateva, Taniguchi, Tomotsugu Goto, Vader, Veilleux, Veilleux, Veilleux, Wright, Wu, Wu, Xia, Zabludoff   +84 more
core   +1 more source

Clinically Inspired Multimodal Treatment Using Induced Neural Stem Cells‐Derived Exosomes Promotes Recovery of Traumatic Brain Injury through Microglial Modulation

Advanced Science, EarlyView.
This study explores the therapeutic potential of iNSC‐Exo via local and systemic delivery in TBI mice. It is found that iNSC‐Exo enhances NRXN signaling through Microglia_Nrg3 and Microglia_Rarb, effectively promoting functional and neurological recovery, suggesting a new therapeutic strategy for TBI. Abstract Traumatic brain injury (TBI) poses serious
Jiaojiao Li, Maoxiang Xu, Boyu Cai, Xiangyu Li, Zhanping Liang, Xiaohuan Xia, Haitao Zhang, Zhiwen Zhang, Fei Tan, Jialin Charlie Zheng   +9 more
wiley   +1 more source

MID-INFRARED COLORS OF DWARF GALAXIES: YOUNG STARBURSTS MIMICKING ACTIVE GALACTIC NUCLEI [PDF]

, 2016
Searching for active galactic nuclei (AGNs) in dwarf galaxies is important for our understanding of the seed black holes that formed in the early universe. Here, we test infrared selection methods for AGN activity at low galaxy masses.
K. Hainline, A. Reines, J. Greene, D. Stern   +3 more
semanticscholar   +1 more source

FIR/Submm Spectroscopy with Herschel: First Results from the VNGS and H-Atlas Surveys

Open Astronomy, 2011
The FIR/submm window is one of the least-studied regions of the electromagnetic spectrum, yet this wavelength range is absolutely crucial for understanding the physical processes and properties of the ISM in galaxies.
Baes Maarten, Fritz Jacopo, Rangwala Naseem, Panuzzo Pasquale, Wilson Christine D., Eales Steve, Valtchanov Ivan   +6 more
doaj   +1 more source

Estimating Molecular Gas Content in Galaxies from Polycyclic Aromatic Hydrocarbon Emission

The Astrophysical Journal, 2023
Emission from polycyclic aromatic hydrocarbons (PAHs), a commonly used indicator of star formation activity in galaxies, also has the potential to serve as an effective empirical tracer of molecular gas.
Lulu Zhang, Luis C. Ho
doaj   +1 more source