Results 91 to 100 of about 1,265,321 (271)

A Closer Look at Dwarf Galaxies Exhibiting Mid-infrared Variability: Active Galactic Nuclei Confirmation and Comparison With Nonvariable Dwarf Galaxies

The Astrophysical Journal
Detecting active black holes in dwarf galaxies has proven to be a challenge due to their small size and weak electromagnetic signatures. Mid-infrared variability has emerged as a promising tool that can be used to detect active low-mass black holes in ...
Archana Aravindan, Gabriela Canalizo, Nathan Secrest, Shobita Satyapal, Thomas Bohn   +4 more
doaj   +1 more source

2 mm Observations and the Search for High-redshift Dusty Star-forming Galaxies

The Astrophysical Journal, 2023
Finding high-redshift ( z ≫ 4) dusty star-forming galaxies is extremely challenging. It has recently been suggested that millimeter selections may be the best approach since the negative K-correction makes galaxies at a given far-infrared luminosity ...
L. L. Cowie, A. J. Barger, F. E. Bauer
doaj   +1 more source

An IRAS High Resolution Image Restoration (HIRES) Atlas of All Interacting Galaxies in the IRAS Revised Bright Galaxy Sample

, 2004
We present high-resolution (30"-1') 12, 25, 60, and 100 micron images of 106 interacting galaxy systems contained in the IRAS Revised Bright Galaxy Sample (RBGS, Sanders et al.
Mazzarella, J. M., Sanders, D. B., Surace, J. A.   +2 more
core   +1 more source

Advances in cardiac devices and bioelectronics augmented with artificial intelligence

The Journal of Physiology, EarlyView.
Abstract figure legend Interfaces between the human heart, diagnostic bioelectronics, artificial intelligence, and clinical care. From left to right: Human heart and biosensor interface; representative waveforms of common diagnostic bioelectronic sensing modalities.
Charles Stark, Eric Rytkin, Andrei Alexandru Mircea, Igor R. Efimov   +3 more
wiley   +1 more source

The X-ray emission of local luminous infrared galaxies [PDF]

, 2011
We study the X-ray emission of a representative sample of 27 local luminous infrared galaxies (LIRGs). The median IR luminosity of our sample is log L IR /L ⊙ = 11.2, therefore the low-luminosity end of the LIRG class is well represented. We used new XMM-
M. Pereira-Santaella, A. Alonso-Herrero, M. Santos-Lleo, L. Colina, E. Jiménez-Bailón, A. Longinotti, G. Rieke, M. Ward, P. Esquej   +8 more
semanticscholar   +1 more source

Oxychlorine Species on Mars: A Review

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley   +1 more source

An Indication of Gas Inflow in Clumpy Star-forming Galaxies near z ∼ 1: Lower Gas-phase Metallicities in Clumpy Galaxies Compared to Nonclumpy Galaxies

The Astrophysical Journal
Despite the ubiquity of clumpy star-forming galaxies at high-redshift, the origin of clumps are still largely unconstrained due to the limited observations that can validate the mechanisms for clump formation.
Visal Sok, Adam Muzzin, Pascale Jablonka, Vivian Yun Yan Tan, Z. Cemile Marsan, Danilo Marchesini, Gillian Wilson, Leo Y. Alcorn   +7 more
doaj   +1 more source

The Araucaria Project: Precise distances to Local Group galaxies from near-infrared photometry of RR Lyrae stars

EPJ Web of Conferences, 2017
We present results of the Araucaria Project’s investigation of RR Lyrae stars as distance indicators in nearby galaxies. With an aid of near-infrared period-luminositymetallicity relations available in the literature we determined distance moduli to five
Karczmarek Paulina
doaj   +1 more source

Luminous buried AGNs as a function of galaxy infrared luminosity revealed through Spitzer low-resolution infrared spectroscopy

, 2009
We present the results of Spitzer IRS infrared 5-35 micron low-resolution spectroscopic energy diagnostics of ultraluminous infrared galaxies (ULIRGs) at z > 0.15, classified optically as non-Seyferts.
Brandl, Bundy, Caputi, Dasyra, Dudley, Farrah, Floc'h, Forster Schreiber, Genzel, Granato, Houck, Imanishi, Imanishi, Imanishi, Imanishi, Imanishi, Kim, Levenson, Lutz, Magorrian, Masatoshi Imanishi, Peeters, Perez-Gonzalez, Puxley, Sirocky, Soifer, Soifer, Soifer, Veilleux, Voit, Werner, Wu   +31 more
core   +1 more source

The impact of bars on the mid-infrared dust emission of spiral galaxies: global and circumnuclear properties [PDF]

, 2001
We study the mid-infrared properties of a sample of 69 nearby spiral galaxies, selected to avoid Seyfert activity contributing a significant fraction of the central energetics, or strong tidal interaction, and to have normal infrared luminosities.
A. Bosma, Aalto, Aaronson, Aguerri, Allamandola, Andreani, Appleton, Arsenault, Ashby, Athanassoula, Athanassoula, Bajaja, Bonatto, Borghesi, Boselli, Boselli, Boulanger, Boulanger, Braine, Brooks, Buta, C. Bonoli, Cayatte, Cayatte, Cesarsky, Cesarsky, Cesarsky, Chamaraux, Chamaraux, Claussen, Cohen, Combes, Combes, Condon, Contursi, Dale, Dale, de Grijp, Devereux, Diaz, Duley, Désert, Elfhag, Eskridge, Friedli, Garcia, García-Barreto, García-Barreto, Genzel, Giard, Giovanardi, Guiderdoni, Gérin, H. Roussel, Handa, Haynes, Haynes, Heckman, Helfer, Helou, Helou, Ho, Horellou, Huang, Huchtmeier, Huchtmeier, Huntley, Isobe, Jörsäter, Kamphuis, Keel, Keel, Kenney, Kennicutt, Koopmann, Kotilainen, Krumm, Krügel, Kutner, L. Vigroux, Laurent, Lindblad, Léger, M. Sauvage, Maia, Maia, Maiolino, Maoz, Martin, Martin, Martinet, Mathewson, Mauersberger, McLeod, Mirabel, Mundell, P. Gallais, P. Mazzei, Papoular, Pence, Phillips, Regan, Regan, Reynaud, Rice, Richter, Roche, Rogstad, Roth, Roussel, Ryder, S. Madden, Sage, Sakamoto, Sakata, Sancisi, Sanders, Sanders, Sandqvist, Seigar, Sellgren, Sheth, Shioya, Soifer, Spoon, Strong, Sturm, T. Hawarden, Taniguchi, Telesco, Theureau, Thuan, Tubbs, Uchida, van den Bergh, Veilleux, Veilleux, Vila-Vilaró, Véron-Cetty, Whitworth, Wiklind, Wiklind, Young   +142 more
core   +2 more sources