Results 71 to 80 of about 1,360 (234)

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

Astronomische 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, Roman Gerasimov, Luigi R. Bedin, Enrico Vesperini, Domenico Nardiello, Maurizio Salaris, Adam Burgasser, Jay Anderson, Mattia Libralato, Andrea Bellini, Piero Rosati   +10 more
wiley   +1 more source

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

The 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, Stefano Marchesi, Marco Ajello, Francesca Civano, Roberto Gilli, Giorgio Lanzuisi, Iván E. López, Peter G. Boorman, Ross Silver, Nuria Torres-Albà, Andrealuna Pizzetti   +10 more
doaj   +1 more source

Mid-infrared spectroscopy of infrared-luminous galaxies atz∼ 0.5-3 [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
32 pages, 24 figures, 15 tables, accepted for publication in ...
Hernán-Caballero, A., Pérez-Fournon, I., Hatziminaoglou, E., Afonso-Luis, A., Rowan-Robinson, M., Rigopoulou, D., Farrah, D., Lonsdale, C. J., Babbedge, T., Clements, D., Serjeant, S., Pozzi, F., Vaccari, M., Montenegro-Montes, F. M., Valtchanov, I., González-Solares, E., Oliver, S., Shupe, D., Gruppioni, C., Vila-Vilaró, B., Lari, C., La Franca, F.   +21 more
openaire   +3 more sources

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

What powers luminous infrared galaxies?

Astronomy & Astrophysics, 1996
Based on the initial data sets taken with the ISO short wavelength spectrometer (SWS) we present a first discussion of the source of luminosity of (ultra-)luminous infrared galaxies (ULIRGs). By comparison of observations of 2.5-45 mu m lines to classical starbursts and active galactic nuclei and by modelling of the line emission we show that three key
Lutz, D, Genzel, R, Sternberg, A, Netzer, H, Kunze, D, Rigopoulou, D, Sturm, E, Egami, E, Feuchtgruber, H, Moorwood, A, deGraauw, T   +10 more
openaire   +2 more sources

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

The Arp 240 Galaxy Merger: A Detailed Look at the Molecular Kennicutt–Schmidt Star Formation Law on Subkiloparsec Scales

The Astrophysical Journal
The molecular Kennicutt–Schmidt Law has been key for understanding star formation (SF) in galaxies across all redshifts. However, recent subkiloparsec observations of nearby galaxies reveal deviations from the nearly unity slope ( N ) obtained with disk ...
A. Saravia, E. Rodas-Quito, L. Barcos-Muñoz, A. S. Evans, D. Kunneriath, G. Privon, Y. Song, I. Yoon, K. L. Emig, M. Sánchez-García, S. T. Linden, K. Green, M. Johnstone, J. Nagarajan-Swenson, G. A. Meza, E. Momjian, L. Armus, V. Charmandaris, T. Diaz-Santos, C. Eibensteiner, J. Howell, H. Inami, J. Kader, C. Ricci, E. Treister, V. U, T. Bohn, D. B. Sanders   +27 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

The 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, Shusuke Onishi, Takao Nakagawa, Kosei Matsumoto, Naoki Isobe, Mai Shirahata, Shunsuke Baba, Kazushi Sakamoto   +7 more
doaj   +1 more source

HerS-3: An Exceptional Einstein Cross Reveals a Massive Dark Matter Halo

The Astrophysical Journal
We present a study of HerS-3, a dusty star-forming galaxy at z _spec  = 3.0607, which is gravitationally amplified into an Einstein cross with a fifth image of the background galaxy seen at the center of the cross.
P. Cox, K. M. Butler, C. R. Keeton, L. Eid, E. Borsato, T. J. L. C. Bakx, R. Neri, B. M. Jones, P. Prajapati, A. J. Baker, S. Berta, A. Cooray, E. M. Corsini, L. Marchetti, A. Omont, A. Beelen, R. Gavazzi, D. Ismail, R. J. Ivison, M. Krips, M. D. Lehnert, H. Messias, D. Riechers, C. Vlahakis, A. Weiss, P. van der Werf, C. Yang   +26 more
doaj   +1 more source