Results 71 to 80 of about 1,316 (234)

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

Silicates in Ultraluminous Infrared Galaxies

open access: yesThe Astrophysical Journal, 2008
We analyze the mid-infrared (MIR) spectra of ultraluminous infrared galaxies (ULIRGs) observed with the Spitzer Space Telescope's Infrared Spectrograph. Dust emission dominates the MIR spectra of ULIRGs, and the reprocessed radiation that emerges is independent of the underlying heating spectrum.
Sirocky, M. M.   +4 more
openaire   +6 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

Not So Fast: A New Catalog of Meteor Persistent Trains

open access: yesJournal of Geophysical Research: Space Physics, Volume 129, Issue 7, July 2024.
Abstract This paper presents the results of a nearly 2‐year long campaign to detect and analyze meteor persistent trains (PTs)—self‐emitting phenomena which can linger up to an hour after their parent meteor. The modern understanding of PTs has been primarily developed from the Leonid storms at the turn of the century; our goal was to assess the ...
L. E. Cordonnier   +4 more
wiley   +1 more source

1991T-like Supernovae

open access: yesThe Astrophysical Journal Supplement Series
Understanding the nature of the luminous 1991T-like supernovae (SNe) is of great importance to SN cosmology as they are likely to have been more common in the early Universe.
M. M. Phillips   +25 more
doaj   +1 more source

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

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

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

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

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

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