Results 61 to 70 of about 35,402 (267)

Quasars and Ultraluminous Infrared Galaxies: At the Limit? [PDF]

open access: yes, 1998
We have detected the host galaxies of 16 nearby, radio-quiet quasars using images obtained with the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS).
Cristiani S.   +9 more
core   +3 more sources

Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers

open access: yesThe Astrophysical Journal, 2023
Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić   +3 more
doaj   +1 more source

Review of asteroid, meteor, and meteorite‐type links

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 4, Page 928-973, April 2025.
Abstract With the goal to determine the origin of our meteorites in the asteroid belt, video and photographic observations of meteors have now tracked 75 meteorite falls. Six years ago, there were just hints that different meteorite types arrived on different orbits, but now, the number of orbits (N) is high enough for distinct patterns to emerge.
Peter Jenniskens   +1 more
wiley   +1 more source

An ISOCAM survey through gravitationally lensing galaxy clusters. III. New results from mid-infrared observations of th e cluster Abell 2219 [PDF]

open access: yes, 2004
The massive cluster of galaxies Abell 2219 (z = 0.228) was observed at 14.3 $\mu$m with the Infrared Space Observatory and results were published by Barvainis et al. (1999). These observations have been reanalyzed using a method specifically designed for
A. Biviano   +64 more
core   +2 more sources

The mid-infrared emission of local Luminous Infrared Galaxies

open access: yesRevista Mexicana De Astronomia Y Astrofisica, 2006
En este art´ıculo se combinan la sensibilidad de Spitzer y la alta resolucion espacial de T-ReCS en el GeminiSouth para estudiar las propiedades en el infrarrojo (IR) medio de galaxias luminosas infrarrojas (LIRGs) locales (d < 75 Mpc). Las im´agenes de T-ReCS en 8 − 10 µm nos han permitido separar la emision nuclear (formacion estelar y/o AGN) de la ...
openaire   +5 more sources

JWST Imaging of the Closest Globular Clusters—V. The White Dwarfs Cooling Sequence of M4

open access: yesAstronomische Nachrichten, Volume 346, Issue 2, February 2025.
ABSTRACT We combine infrared (IR) observations collected by the James Webb Space Telescope with optical deep images by the Hubble Space Telescope taken ~20 years earlier to compute proper‐motion membership for the globular cluster (GC) M4 (NGC 6121) along its entire white dwarf (WD) cooling sequence (CS).
Luigi R. Bedin   +11 more
wiley   +1 more source

UEG Week 2023 Poster Presentations

open access: yes, 2023
United European Gastroenterology Journal, Volume 11, Issue S8, Page 535-1498, October 2023.
wiley   +1 more source

Spitzer Observations of Passive and Star Forming Early-type Galaxies: an Infrared Color-Color Sequence

open access: yes, 2009
We describe the infrared properties of a large sample of early type galaxies, comparing data from the Spitzer archive with Ks-band emission from 2MASS.
Baldry   +29 more
core   +1 more source

Warm Molecular Hydrogen in Nearby, Luminous Infrared Galaxies [PDF]

open access: yesThe Astronomical Journal, 2018
Abstract Mid-infrared molecular hydrogen (H2) emission is a powerful cooling agent in galaxy mergers and in radio galaxies; it is a potential key tracer of gas evolution and energy dissipation associated with mergers, star formation, and accretion onto supermassive black holes. We detect mid-IR H2 line emission in at least one rotational
Andreea O. Petric   +21 more
openaire   +5 more sources

Unveiling the Distant Universe: Characterizing z ≥ 9 Galaxies in the First Epoch of COSMOS-Web

open access: yesThe Astrophysical Journal
We report the identification of 15 galaxy candidates at z ≥ 9 using the initial COSMOS-Web JWST observations over 77 arcmin ^2 through four Near Infrared Camera filters (F115W, F150W, F277W, and F444W) with an overlap with the Mid-Infrared Imager (F770W)
Maximilien Franco   +50 more
doaj   +1 more source

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