Results 71 to 80 of about 411 (185)

The Magellan M2FS Spectroscopic Survey of High-redshift Galaxies: The Brightest Lyman-break Galaxies at z ∼ 6

The Astrophysical Journal
We present a study of a sample of 45 spectroscopically confirmed, UV luminous galaxies at z ∼ 6. They were selected as bright Lyman-break galaxies (LBGs) using deep multiband optical images in more than 2 deg ^2 of the sky, and subsequently identified ...
Shuqi Fu, Linhua Jiang, Yuanhang Ning, Weiyang Liu, Zhiwei Pan   +4 more
doaj   +1 more source

The undetectable fraction of core-collapse supernovae in luminous infrared galaxies

Astronomy & Astrophysics
Context. Core-collapse supernovae (CCSNe) in luminous infrared galaxies (LIRGs) can have extreme line-of-sight host galaxy dust extinctions, which leads to a large fraction of the events remaining undetected by optical and infrared surveys.
Mäntynen I., Kankare E., Mattila S., Efstathiou A., Ryder S. D., Kool E., Matilainen K., Reynolds T. M., Vassallo C., Väisänen P.   +9 more
doaj   +1 more source

Heavy Elements and Electromagnetic Transients from Neutron Star Mergers

Annalen 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

The subarcsecond infrared structures at the centers of infrared-luminous galaxies

The Astrophysical Journal, 1990
This paper presents 1.6-2.2-micron imaging observations of the centers of nine galaxies with high 60-100-micron luminosities. Eight of the nine galaxies contain central 2.2-micron sources that are larger than the point spread function, which typically had a size (FWHM) of 1.0 arcsec. The typical physical size of the 2.2-micron sources is about 0.5 kpc.
S. A. Eales, E. E. Becklin, K.-W. Hodapp, D. A. Simons, C. G. Wynn-Williams   +4 more
openaire   +1 more source

Searching for Dark Galaxies with H I Detection from the Arecibo Legacy Fast ALFA (ALFALFA) Survey

The Astrophysical Journal Supplement Series
We present a catalog of 142 dark galaxy candidates in a region covered by the Arecibo Legacy Fast ALFA (ALFALFA) survey. We start with 344 ALFALFA H i sources without optical counterparts and remove those that do not seem to have a dark galaxy origin. To
Minseong Kwon, Ho Seong Hwang, Brian R. Kent, Ilsang Yoon, Gain Lee, Hyein Yoon   +5 more
doaj   +1 more source

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

Astronomische 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, J. Dietrich, A. J. Burgasser, D. Apai, M. Libralato, M. Griggio, C. Fontanive, D. Pourbaix   +7 more
wiley   +1 more source

Recent Star Formation in Very Luminous Infrared Galaxies [PDF]

, 2001
Among star forming galaxies, a spectral combination of a strong Hdelta line in absorption and a moderate [OII] emission has been suggested to be a useful method to identify dusty starburst galaxies at any redshift, on the basis of optical data alone.
Bressan, A., Poggianti, B., Franceschini, A.   +2 more
openaire   +2 more sources

Building on the Archives: Connecting the CN/CO Intensity Ratio with Global Galaxy Properties in Nearby U/LIRGs

The Astrophysical Journal
We use the CN/CO intensity ratio to obtain the dense gas fraction, f _dense , for a sample of 16 ultraluminous and luminous infrared (IR) galaxies and compare f _dense with a suite of global galaxy properties.
Blake Ledger, Christine D. Wilson, Osvald Klimi, Núria Torres-Albà, Toshiki Saito   +4 more
doaj   +1 more source

Obscured AGN at z < 1.5: X-Ray to Far-infrared SEDs and Host Galaxy Morphologies in the GOODS Fields

The Astrophysical Journal
We present an analysis of spectral energy distributions (SEDs), galaxy light profiles, and visual morphological classifications for 194 X-ray luminous active galactic nuclei (AGN) (intrinsic absorption-corrected $\mathrm{log}({L}_{{\rm{X}},0.5-7\,{\rm ...
William W.H. Jarvis, Connor Auge, David Sanders, Xuheng Ding, Jeana Kim-Bolt, C. Megan Urry, Eric Hooper, Alessandro Peca, Aritra Ghosh, Chuan Tian, Tonima T. Ananna, Md Mahmudunnobe   +11 more
doaj   +1 more source

Spitzer/IRS Mapping of Local Luminous Infrared Galaxies [PDF]

, 2010
We present results of our program Spitzer/IRS Mapping of local Luminous Infrared Galaxies (LIRGs). The maps cover the central 20"x20" or 30"x 30" regions of the galaxies, and use all four IRS modules to cover the full 5-38 microns spectral range. We have built spectral maps of the main mid-IR emission lines, continuum and PAH features, and extracted 1D
Pereira-Santaella, Miguel, Alonso-Herrero, A., Rieke, George H., Colina, Luis   +3 more
openaire   +3 more sources