Results 51 to 60 of about 2,538 (226)

Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]

, 2005
Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark, Swinback, Anthony Mark   +1 more
core  

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

The clustering of galaxies in hierarchical galaxy formation models [PDF]

, 2010
Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core  

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Constraining dark energy using real and mock galaxy surveys [PDF]

, 2009
In this thesis, we study how dark energy may be constrained by measurements of large-scale clustering in future galaxy surveys, and through the imprint of a time-varying large-scale potential on the CMB (the integrated Sachs-Wolfe effect).
CAI, YANCHUAN
core  

The properties and environment of the giant, infrared-luminous galaxy IRAS 09104 + 4109 [PDF]

, 1988
IRAS 09104 + 4109 is the most luminous object yet discovered by means of the IRAS survey. It is identified with a cD galaxy having a strong emission-line spectrum at a redshift of 0.442 and emits 6 x 10 to the 12th solar luminosities/sq h, 99 percent of ...
Becklin, E. E., Eales, S.A., Eales, Stephen Anthony, Hamilton, D., Kleinmann, S. G., Keel, W.C., Becklin, E.E., Wynn-Williams, C.G., Wynn-Williams, C. G., Keel, W. C., Kuntz, K. D., Kleinmann, S.G., Kuntz, K.D.   +12 more
core   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

A JWST MIRI LRS Survey of 37 Massive Star-forming Galaxies and Active Galactic Nuclei at Cosmic Noon: Overview and First Results

The Astrophysical Journal
We present a large spectroscopic survey with JWST’s Mid-Infrared Instrument Low Resolution Spectrometer (LRS) targeting 37 infrared-bright galaxies between z  = 0.65–2.46 with infrared luminosities $\mathrm{log}{L}_{{\rm{IR}}}/{L}_{\odot }\gt 11.5$ and $\
Jed McKinney, Miriam Eleazer, Alexandra Pope, Anna Sajina, Stacey Alberts, Meredith Stone, Leonid Sajkov, Virginia Vanicek, Allison Kirkpatrick, Thomas S.-Y. Lai, Caitlin M. Casey, Lee Armus, Tanio Díaz- Santos, Andrew Korkus, Olivia Cooper, Lindsay R. House, Hollis Akins, Erini Lambrides, Arianna S. Long, Lin Yan   +19 more
doaj   +1 more source

The Accretion History of AGN: The Spectral Energy Distributions of X-Ray-luminous Active Galactic Nuclei

The Astrophysical Journal, 2023
Spectral energy distributions (SEDs) from X-ray to far-infrared (FIR) wavelengths are presented for a sample of 1246 X-ray-luminous active galactic nuclei (AGNs; L _0.5–10 keV > 10 ^43 erg s ^−1 ), with z _spec < 1.2, selected from Stripe 82X, COSMOS ...
Connor Auge, David Sanders, Ezequiel Treister, C. Megan Urry, Allison Kirkpatrick, Nico Cappelluti, Tonima Tasnim Ananna, Médéric Boquien, Mislav Baloković, Francesca Civano, Brandon Coleman, Aritra Ghosh, Jeyhan Kartaltepe, Michael Koss, Stephanie LaMassa, Stefano Marchesi, Alessandro, Peca, Meredith Powell, Benny Trakhtenbrot, Tracey Jane Turner   +19 more
doaj   +1 more source

Pairing statistics for infrared-luminous galaxies

The 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, W. C. Keel
openaire   +1 more source