Results 131 to 140 of about 3,423,233 (292)

Euclid: Quick Data Release (Q1) – Dual active galactic nuclei in low-mass galaxies★

Astronomy & Astrophysics
Dual active galactic nuclei (AGNs) are expected in hierarchical galaxy evolution models, in which low-mass galaxies merge to build more massive ones. While observational evidence for dual AGNs is growing in massive galaxies, no clear detection has yet ...
Mezcua M., Laloux B., Scialpi M., Siudek M., Eróstegui A., Ricci F., Matamoro Zatarain T., Visser S., Rottgering H. J. A., Gutierrez C. M., Feltre A., Bisigello L., Saulder C., Ulivi L., Knapen J. H., Domínguez Sánchez H., Zamorani G., Rubinur K., Calhau J., Spinoglio L., Shankar F., Stern D., Pucha R., Viitanen A., Altieri B., Andreon S., Auricchio N., Baldi M., Bardelli S., Battaglia P., Biviano A., Brescia M., Camera S., Cañas-Herrera G., Capobianco V., Carbone C., Carretero J., Castellano M., Castignani G., Cavuoti S., Chambers K. C., Cimatti A., Colodro-Conde C., Congedo G., Conselice C. J., Conversi L., Copin Y., Courbin F., Courtois H. M., Cropper M., Degaudenzi H., De Lucia G., Dolding C., Dole H., Dubath F., Dupac X., Farina M., Farinelli R., Faustini F., Ferriol S., Frailis M., Franceschi E., Fumana M., Galeotta S., George K., Gillis B., Giocoli C., Gracia-Carpio J., Grazian A., Grupp F., Haugan S. V. H., Hoar J., Hoekstra H., Holmes W., Hook I. M., Hormuth F., Hornstrup A., Jahnke K., Jhabvala M., Kermiche S., Kubik B., Kümmel M., Kunz M., Kurki-Suonio H., Le Brun A. M. C., Ligori S., Lilje P. B., Lindholm V., Lloro I., Mainetti G., Maino D., Maiorano E., Mansutti O., Marggraf O., Martinelli M., Martinet N., Marulli F., Massey R. J., Medinaceli E., Mei S., Mellier Y., Meneghetti M., Merlin E., Meylan G., Mora A., Moresco M., Moscardini L., Neissner C., Nichol R. C., Niemi S.-M., Padilla C., Paltani S., Pasian F., Pedersen K., Percival W. J., Pettorino V., Pires S., Polenta G., Poncet M., Popa L. A., Pozzetti L., Raison F., Renzi A., Rhodes J., Riccio G., Romelli E., Roncarelli M., Rossetti E., Rusholme B., Saglia R., Sakr Z., Sapone D., Sartoris B., Sauvage M., Schirmer M., Schneider P., Secroun A., Seidel G., Serrano S., Sihvola E., Simon P., Sirignano C., Sirri G., Stanco L., Steinwagner J., Tallada-Crespí P., Taylor A. N., Tereno I., Tessore N., Toft S., Toledo-Moreo R., Torradeflot F., Tutusaus I., Valenziano L., Valiviita J., Vassallo T., Wang Y., Weller J., Zacchei A., Zerbi F. M., Zinchenko I. A., Zucca E., García-Bellido J., Huertas-Company M., Macias-Perez J., Martín-Fleitas J., Scottez V.   +166 more
doaj   +1 more source

The location and kinematics of the emission line regions in Active Galactic Nuclei [PDF]

, 2008
This thesis contains the results from a study of the optical emission lines of various samples of active galactic nuclei (AGN). We have used three separate techniques to determine the precise kinematics and the relative location of the emission line ...
Mullaney, J R, Mullaney, J.R.
core  

Post‐flight assessment of the OSIRIS‐REx Sample Return Capsule (SRC) for organic and other potential contaminants

Meteoritics &Planetary Science, EarlyView.
Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford, Jason P. Dworkin, Kevin Righter, Feargus A. J. Abernethy, Romain Alosius, José C. Aponte, James Ball, Eve L. Berger, Denise K. Buckner, Henner Busemann, Simon J. Clemett, George Cody, Jamie Elsila, Dionysis I. Foustoukos, Ian A. Franchi, Daniel P. Glavin, Monica M. Grady, Heather V. Graham, Philipp R. Heck, Amy E. Hofmann, Yongsong Huang, Bumsoo Kim, Daniela Krietsch, Nicole G. Lunning, Colin Maden, Hannah L. McLain, Angel Mojarro, Michel Nuevo, Philippe Schmitt‐Kopplin, Ewerton Santos, Maria Schönbächler, Christopher J. Snead, Kathie L. Thomas‐Keprta, Alexander B. Verchovsky, Harold C. Connolly Jr., Dante S. Lauretta   +35 more
wiley   +1 more source

Near-infrared diagnostic diagrams of the gas ionization sources in nearby galaxies: A JWST NIRSpec view

Astronomy & Astrophysics
Context. Tracing the origin of the gas emission lines in galaxies can prove challenging in certain cases. Buried active galactic nuclei (AGNs) and obscured young stellar clusters pose significant obstacles with respect to traditional optical diagnostic ...
Costa-Souza José Henrique, Colina Luis, Riffel Rogemar A., Arribas Santiago, Perna Michele, Pereira-Santaella Miguel, García-Bernete Ismael, Martín Montserrat Villar, Dors Oli L.   +8 more
doaj   +1 more source

Regulation by the Transcriptional Regulator YdcI in E. coli and (p)ppGpp‐Dependent Activation of ydcI Expression

Molecular Microbiology, EarlyView.
YdcI, a LysR‐type transcription regulator in Escherichia coli, regulates loci like iraP and mqo. Its expression is induced by (p)ppGpp under stress conditions, and protein levels rise during mid‐exponential growth, connecting its role to stress response and metabolism control. ABSTRACT YdcI, a LysR‐type transcription regulator, has been associated with
Ria Basu Roy, Karin Schnetz
wiley   +1 more source

Acknowledgement to Reviewers of Galaxies in 2014

, 2015
The editors of Galaxies would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2014:[...
Galaxies Editorial Office
core   +1 more source

A C‐repeat binding factor–salicylic acid (CBF–SA) module links wound‐induced evaporative cooling to tissue repair in plants

New Phytologist, EarlyView.
A model of the C‐repeat binding factor–salicylic acid (CBF–SA) module in plant wound healing. Summary Repairing damaged tissues is essential for the survival of all organisms. In plants, tissue injury rapidly triggers defense and repair programs. However, the molecular mechanisms linking early injury cues to the later stage of wound repair remain ...
Joseph Michael Balem, Chenjiao Tan, Nathália Cássia Ferreira Dias, Mariah Arnold, Sorrel Tran, Paul M. Severns, Paulo José Pereira Lima Teixeira, Changying Li, Li Yang   +8 more
wiley   +1 more source

Fast, dust-poor outflows in the local candidate dual AGN MCG-03-34-64 observed with VLT/ERIS

Astronomy & Astrophysics
We present VLT/ERIS integral field unit (IFU) J-band observations of MCG-03-34-64, a nearby (z = 0.0167) Seyfert galaxy hosting a candidate dual active galactic nucleus (AGN) system with a separation of ∼100 pc between the nuclei, which are detected in ...
Lamperti I., Mannucci F., Bertola E., Marconi A., Cresci G., Nardini E., D’Amato Q., Perna M., Rojas-Lilayú A., Bracci C., Braito V., Cataldi E., Ceci M., Chakraborty A., Cicone C., De Rosa A., Feltre A., Ginolfi M., Lusso E., Marconcini C., Moreschini B., Portaluri E., Rubinur K., Scialpi M., Severgnini P., Tozzi G., Trindade Falcão A., Ulivi L., Venturi G., Vignali C., Zanchettin M. V.   +30 more
doaj   +1 more source

The legacy and large-scale distribution of active galaxies

, 2005
If accretion onto massive black holes is the power source for active galaxies, then nearby galaxies should contain 'dead quasars': black holes that do not shine, either because they are starved for fuel or because they accrete with low radiative ...
Binney, J, Ostriker, JP, Frenk, CS, Tremaine, S, Scott Tremaine   +4 more
core   +1 more source

Ecological Filtering by Tuber Compartments Shapes Stable Core Microbiomes That Underpin Potato Plant Growth Across Environments

Plant, Cell &Environment, EarlyView.
ABSTRACT Harnessing plant microbiomes for sustainable agriculture requires understanding not only whether they can boost crop performance, but also how ecological processes govern their assembly, stability, and functional contributions across environments.
Yizhu Qiao, Junqing Qiao, Roeland L. Berendsen, Xu Cheng, Corné M.J. Pieterse, Yang Song   +5 more
wiley   +1 more source