Results 111 to 120 of about 72,131 (316)

Dense Molecular Gas Properties of the Central Kiloparsec of Nearby Ultraluminous Infrared Galaxies Constrained by ALMA Three Transition-line Observations

The Astrophysical Journal, 2023
We report the results of Atacama Large Millimeter/submillimeter Array (ALMA) 1–2 kpc resolution, three rotational transition-line ( J = 2–1, J = 3–2, and J = 4–3) observations of multiple dense molecular gas tracers (HCN, HCO ^+ , and HNC) for 10 nearby (
Masatoshi Imanishi, Shunsuke Baba, Kouichiro Nakanishi, Takuma Izumi   +3 more
doaj   +1 more source

Radio continuum and far-infrared emission from the galaxies in the Eridanus group

, 2005
The Eridanus galaxies follow the well-known radio-FIR correlation. Majority (70%) of these galaxies have their star formation rates below that of the Milky Way.
A. Omar, A. Omar, C. A. Heisler, C. N. A. Willmer, D. B. Sanders, G. Gavazzi, G. Helou, G. Neugebauer, H. Roussel, J. J. Condon, J. J. Condon, J. J. Condon, J. J. Condon, K. S. Dwarakanath, M. A. W. Verheijen, M. Harwit, M. S. Yun, M. Scodeggio, N. A. Reddy, N. Miller, P. C. Kruit van der, R. C. Kennicutt, S. Hameed, S. Veilleux, T. Elfhag, T. K. Menon   +25 more
core   +2 more sources

Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto, J. F. Steiner, A. Bodaghee, P. Chakraborty, M. Sobolewska, D. R. Pasham, A. Ogorzalek, J. Zuhone, A. Bogdan, M. Vogelsberger   +9 more
wiley   +1 more source

Clusters, Clumps, Dust, and Gas (CCDG) in NGC 1614: Benchmarking Cluster Demographics in Extreme Systems

The Astronomical Journal
Observations of young star clusters in a variety of galaxies have been used to constrain basic properties related to star formation, such as the fraction of stars found in clusters (Γ) and the shape of the cluster mass function (CMF).
Miranda Caputo, Rupali Chandar, Angus Mok, Sean Linden, Paul Goudfrooij, Bradley C. Whitmore   +5 more
doaj   +1 more source

GROUND-BASED Paα NARROW-BAND IMAGING OF LOCAL LUMINOUS INFRARED GALAXIES. I. STAR FORMATION RATES AND SURFACE DENSITIES [PDF]

, 2014
Luminous infrared galaxies (LIRGs) are enshrouded by a large amount of dust produced by their active star formation, and it is difficult to measure their activity in optical wavelengths.
K. Tateuchi, M. Konishi, K. Motohara, H. Takahashi, N. Kato, Yutaro Kitagawa, Soya Todo, K. Toshikawa, S. Sako, Y. Uchimoto, R. Ohsawa, K. Asano, Y. Ita, T. Kamizuka, S. Komugi, S. Koshida, Shoichi Manabe, Tomohiko Nakamura, A. Nakashima, K. Okada, T. Takagi, T. Tanab'e, M. Uchiyama, T. Aoki, M. Doi, T. Handa, K. Kawara, K. Kohno, T. Minezaki, T. Miyata, T. Morokuma, T. Soyano, Y. Tamura, Masuo Tanaka, K. Tarusawa, Y. Yoshii   +35 more
semanticscholar   +1 more source

JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundamental astrophysical WD properties and to search for evidence in their colors for (or against ...
L. R. Bedin, D. Nardiello, M. Salaris, M. Libralato, P. Bergeron, A. J. Burgasser, D. Apai, M. Griggio, M. Scalco, J. Anderson, R. Gerasimov, A. Bellini   +11 more
wiley   +1 more source

GOALS-JWST: Mid-infrared Molecular Gas Excitation Probes the Local Conditions of Nuclear Star Clusters and the Active Galactic Nucleus in the LIRG VV 114

The Astrophysical Journal
The enormous increase in mid-IR sensitivity and spatial and spectral resolution provided by the JWST spectrographs enables, for the first time, detailed extragalactic studies of molecular vibrational bands. This opens an entirely new window for the study
Victorine A. Buiten, Paul P. van der Werf, Serena Viti, Lee Armus, Andrew G. Barr, Loreto Barcos-Muñoz, Aaron S. Evans, Hanae Inami, Sean T. Linden, George C. Privon, Yiqing Song, Jeffrey A. Rich, Susanne Aalto, Philip N. Appleton, Torsten Böker, Vassilis Charmandaris, Tanio Diaz-Santos, Christopher C. Hayward, Thomas S.-Y. Lai, Anne M. Medling, Claudio Ricci, Vivian U   +21 more
doaj   +1 more source

Radio continuum properties of luminous infrared galaxies. Identifying the presence of an AGN in the radio [PDF]

, 2014
Luminous infrared galaxies are systems enshrouded in dust, which absorbs most of their optical/UV emission and re-radiates it in the mid- and far-infrared.
E. Vardoulaki, V. Charmandaris, E. Murphy, T. Díaz-Santos, T. Díaz-Santos, L. Armus, A. Evans, J. Mazzarella, G. Privon, S. Stierwalt, L. Barcos-Mũnoz   +10 more
semanticscholar   +1 more source

Not So Fast: A New Catalog of Meteor Persistent Trains

Journal 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, K. S. Obenberger, J. M. Holmes, G. B. Taylor, D. Vida   +4 more
wiley   +1 more source

THE FUV TO NEAR-IR MORPHOLOGIES OF LUMINOUS INFRARED GALAXIES IN THE GOALS SAMPLE [PDF]

, 2014
We compare the morphologies of a sample of 20 luminous infrared galaxies (LIRGs) from the Great Observatories All-sky LIRG Survey (GOALS) in the FUV, B, I, and H bands, using the Gini (G) and M20 parameters to quantitatively estimate the distribution and
S. Petty, L. Armus, V. Charmandaris, A. Evans, E. Floc’h, C. Bridge, T. D'iaz-Santos, J. Howell, H. Inami, A. Psychogyios, S. Stierwalt, J. K. D. O. Physics, Virginia Tech Blacksburg, Va, Spitzer Science Center, C. I. O. Technology., Pasadena, Ca, D. Physics, U. Crete, Heraklion, Greece., Institute for Astronomy, Astrophysics, Space ApplicationsRemote Sensing, National Observatory of Athens, Penteli, Chercheur Associ'e, O. Paris, París, France., D. O. Astronomy, U. Virginia, Charlottesville, National Radio Astronomy Observatory, CEA-Saclay, Orme des Merisiers, Gif-sur-Yvette, D. Physics, M. Astronomy, National Optical Astronomy Observatory, Tucson, Az, Nucleo de Astronomia de la Facultad de Ingenieria, Universidad Diego Portales, Santiago, Chile.   +46 more
semanticscholar   +1 more source