Results 71 to 80 of about 200,741 (275)

The Role of Starburst-AGN composites in Luminous Infrared Galaxy Mergers: Insights from the New Optical Classification Scheme [PDF]

Astrophys.J.709:884-911,2010, 2009
We investigate the fraction of starbursts, starburst-AGN composites, Seyferts, and LINERs as a function of infrared luminosity (L_IR) and merger progress for ~500 infrared-selected galaxies. Using the new optical classifications afforded by the extremely large data set of the Sloan Digital Sky Survey, we find that the fraction of LINERs in IR-selected ...
arxiv   +1 more source

AKARINEAR-INFRARED SPECTROSCOPY OF LUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal, 2012
We present the AKARI near-infrared (NIR; 2.5-5 micron) spectroscopic study of 36 (ultra)luminous infrared galaxies [(U)LIRGs] at z=0.01-0.4. We measure the NIR spectral features including the strengths of 3.3 micron polycyclic aromatic hydrocarbon (PAH) emission and hydrogen recombination lines (Br .
Ho Seong Hwang, Jong Chul Lee, Jong Chul Lee, Myung Gyoon Lee, Joon Hyeop Lee, Minjin Kim, Minjin Kim   +6 more
openaire   +3 more sources

High Resolution Mid-Infrared Imaging of Infrared Luminous Starburst Galaxies [PDF]

, 2001
Observations for seven infrared luminous starburst galaxies are reported in the mid-infrared from 8 - 18 microns using the Keck Telescopes with spatial resolution approaching the diffraction limit. All of the galaxies observed show evidence of strong interactions based on optical morphologies.
arxiv   +1 more source

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

The 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, Lee Armus, Nicolas Flagey, Pierre Guillard, Justin Howell, Hanae Inami, Vassillis Charmandaris, Aaron Evans, Sabrina Stierwalt, Tanio Diaz-Santos, Nanyao Lu, Henrik Spoon, Joe Mazzarella, Phil Appleton, Ben Chan, Jason Chu, Derek Hand, George Privon, David Sanders, Jason Surace, Kevin Xu, Yinghe Zhao   +21 more
openaire   +7 more sources

AEGIS: Infrared Spectroscopy of An Infrared Luminous Lyman Break Galaxy at z=3.01 [PDF]

, 2006
We report the detection of rest--frame 6.2 and 7.7 \micron emission features arising from Polycyclic Aromatic Hydrocarbons (PAH) in the Spitzer/IRS spectrum of an infrared-luminous Lyman break galaxy at z=3.01.
B. McLeod, C. A. N. Willmer, C. Conselice, C. G. Shu, C. Papovich, Chary R., D. Rigopoulou, E. Egami, E. Le Floc'h, E. S. Laird, G. G. Fazio, G. Wilson, H. A. Smith, J.-S. Huang, M. L. N. Ashby, P. Barmby, R. Ivison, S. Chapman, S. P. Willner, T. Webb   +19 more
core   +4 more sources

UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1

The Astrophysical Journal, 2023
Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, the basic demographics of clumps and their host galaxies remain uncertain.
Alec Martin, Yicheng Guo, Xin Wang, Anton M. Koekemoer, Marc Rafelski, Harry I. Teplitz, Rogier A. Windhorst, Anahita Alavi, Norman A. Grogin, Laura Prichard, Ben Sunnquist, Daniel Ceverino, Nima Chartab, Christopher J. Conselice, Y. Sophia Dai, Avishai Dekel, Jonathan P. Gardner, Eric Gawiser, Nimish P. Hathi, Matthew J. Hayes, Rolf A. Jansen, Zhiyuan Ji, David C. Koo, Ray A. Lucas, Nir Mandelker, Vihang Mehta, Bahram Mobasher, Kalina V. Nedkova, Joel Primack, Swara Ravindranath, Brant E. Robertson, Michael J. Rutkowski, Zahra Sattari, Emmaris Soto, L. Y. Aaron Yung   +34 more
doaj   +1 more source

Review of asteroid, meteor, and meteorite‐type links

Meteoritics &Planetary Science, EarlyView.
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, Hadrien A. R. Devillepoix   +1 more
wiley   +1 more source

The Oxygen Abundances of Luminous and Ultraluminous Infrared Galaxies [PDF]

The Astrophysical Journal, 2008
Luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) dominate the star formation rate budget of the universe at z > 1, yet no local measurements of their heavy element abundances exist. We measure nuclear or near-nuclear oxygen abundances in a sample of 100 star-forming LIRGs and ULIRGs using new, previously published, and archival ...
David S. N. Rupke, Andrew J. Baker, Sylvain Veilleux   +2 more
openaire   +3 more sources

Evolution of the Most Luminous Dusty Galaxies [PDF]

Astrophys.J.698:1682-1697,2009, 2009
A summary of mid-infrared continuum luminosities arising from dust is given for very luminous galaxies, Lir > 10^12 solar luminosities, with 0.005 < z < 3.2 containing active galactic nuclei (AGN), including 115 obscured AGN and 60 unobscured (type 1) AGN. All sources have been observed with the Spitzer Infrared Spectrograph.
arxiv   +1 more source

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

Astronomische 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, Mattia Libralato, Maurizio Salaris, Domenico Nardiello, Michele Scalco, Massimo Griggio, Jay Anderson, Pierre Bergeron, Andrea Bellini, Roman Gerasimov, Adam J. Burgasser, Daniel Apai   +11 more
wiley   +1 more source