Results 71 to 80 of about 1,327 (234)

Ultraluminous Infrared Galaxies: QSOs in Formation? [PDF]

open access: yesThe Astrophysical Journal, 2002
accepted to be published in ApJ, 7 ...
Tacconi, L   +6 more
openaire   +3 more sources

An X-Ray Significantly Variable, Luminous, Type 2 Quasar at z = 2.99 with a Massive Host Galaxy

open access: yesThe Astrophysical Journal
We present a comprehensive X-ray analysis and spectral energy distribution (SED) fitting of WISEA J171419.96+602724.6, an extremely luminous type 2 quasar at z = 2.99.
Xiurui Zhao   +10 more
doaj   +1 more source

Warm Molecular Gas in the Central Parsecs of the Buried Nucleus of NGC 4418 Traced with the Fundamental CO Rovibrational Absorptions

open access: yesThe Astrophysical Journal, 2023
We investigated the inner buried nucleus of a nearby luminous infrared galaxy, NGC 4418, using high-resolution spectroscopy of fundamental carbon monoxide (CO) rovibrational absorptions around 4.67 μ m for the first time.
Youichi Ohyama   +7 more
doaj   +1 more source

The HST Large Programme on NGC 6752 ‐ V. Differences in luminosity and mass function among stellar populations

open access: yesAstronomische Nachrichten, Volume 345, Issue 5, June 2024.
Abstract We exploit the astro‐photometric dataset of the multi‐epoch infrared parallel field of a Hubble Space Telescope Large Programme aimed at studying the faintest stars of the globular cluster NGC 6752 to determine the luminosity and mass functions of the multiple stellar populations of this cluster. Thanks to the measurement of proper motions and
Michele Scalco   +10 more
wiley   +1 more source

Characterising Nearby Luminous Infrared Galaxies

open access: yes, 2017
Luminous InfraRed Galaxies (LIRGs) in the local universe are known to be highly interacting galaxies with strong star-formation in obscured environments. LIRGs have diversity in terms of morphology and mode and location of SF, while their even more energetic counterparts, the Ultra-Luminous IR galaxies, ULIRGs, (LIR ≥ 10^12 Lsol ) are normally ...
Petri Väisänen   +2 more
openaire   +2 more sources

Pairing statistics for infrared-luminous galaxies

open access: yesThe Astronomical Journal, 1993
A knowledge of the pairing fraction of IR-selected galaxies is important in understanding the role of interactions in star formation and nuclear activity. It is clear that interactions are extremely common among the most IR-luminous systems, but results have been inconsistent for less luminous systems; this may result from using peculiar morphology as ...
J. F. Gallimore, William C. Keel
openaire   +2 more sources

Near‐Infrared and Star‐forming Properties of Local Luminous Infrared Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2006
We use HST NICMOS continuum and Pa-alpha observations to study the near-infrared and star-formation properties of a representative sample of 30 local (d ~ 35-75Mpc) luminous infrared galaxies (LIRGs, infrared 8-1000um luminosities of L_IR=11-11.9[Lsun]).
Alonso Herrero, Almudena   +5 more
openaire   +6 more sources

Heavy Elements and Electromagnetic Transients from Neutron Star Mergers

open access: yesAnnalen der Physik, Volume 536, Issue 2, February 2024.
Astro‐(physics) has made major leaps forward through the combined information provided by both gravitational waves and electromagnetic emission from the first detected neutron star merger event. This review provides an up‐to‐date overview of today's understanding of neutron star mergers and their electromagnetic emission and it discusses possible ...
Stephan Rosswog, Oleg Korobkin
wiley   +1 more source

Lack of Correlations between Cold Molecular Gas and AGN Properties in Type 1 AGNs at z ≲ 0.5

open access: yesThe Astrophysical Journal, 2023
We present new NOrthern Extended Millimeter Array (NOEMA) observations of the CO(2–1) emission in eight of the brightest Palomar-Green quasars at z ≲ 0.5 to investigate the role of active galactic nucleus (AGN) feedback in luminous quasars detected at ...
Juan Molina   +5 more
doaj   +1 more source

HST astrometry of the closest brown dwarfs‐II. Improved parameters and constraints on a third body

open access: yesAstronomische Nachrichten, Volume 345, Issue 1, January 2024.
Abstract Located at less than two pc away, Luhman 16 AB (WISE J104915.57‐531906.1) is the closest pair of brown dwarfs and the third closest “stellar” system to Earth. An exoplanet candidate in the Luhman 16 binary system was reported in 2017 based on a weak astrometric signature in the analysis of 12 HST epochs.
L. R. Bedin   +7 more
wiley   +1 more source

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