Results 31 to 40 of about 10,786,884 (386)

The Faint End of the Centaurus A Satellite Luminosity Function [PDF]

Astrophysical Journal, 2018
The Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) is constructing a wide-field map of the resolved stellar populations in the extended halos of these two nearby, prominent galaxies.
D. Crnojevi'c, D. Sand, P. Bennet, S. Pasetto, K. Spekkens, N. Caldwell, P. Guhathakurta, B. McLeod, A. Seth, J. Simon, J. Strader, E. T. U. O. Tampa, Tâmpa, Fl, USA., D. PhysicsAstronomy, Texas Tech University, Lubbock, Tx, D. O. Astronomy, S. Observatory, U. Arizona, Tucson, Az, Observatories of the Carnegie Institution for Science, Pasadena, Ca, Department of Materials Science, Royal Military College of Canada, Kingston, Ontario, Canada, H. C. F. Astrophysics, Cambridge, Ma, D. O. AstronomyAstrophysics, University of California at Santa Cruz, D. Physics, Astronomy, U. Utah, Salt lake City, Ut, M. University, E. Lansing., Mi, U. Pacific, Stockton   +46 more
semanticscholar   +1 more source

Luminosity Function of the Perigalactocentric Region [PDF]

, 1996
We present H and K photometry of 42,000 stars in an area of 250 arcmin$^{2}$ centered on the Galactic center. We use the photometry to construct a dereddened K band luminosity function (LF) for this region, excluding the excessively crowded inner 2' of ...
DePoy, D. L., Gould, Andrew, Narayanan, Vijay K.   +2 more
core   +2 more sources

EVOLUTION OF THE Hα LUMINOSITY FUNCTION [PDF]

The Astrophysical Journal, 2009
26 pages, 23 figures, submitted to ApJ; version with high resolution figures available at http://www.cfa.harvard.edu/~ewestra/publications/
Westra, Eduard, Geller, Margaret J., Kurtz, Michael J., Fabricant, Daniel G., Dell'Antonio, Ian   +4 more
openaire   +2 more sources

Galactic Model Parameters and Spatial Density of Cataclysmic Variables in the Gaia Era: New Constraints on Population Models

The Astronomical Journal, 2023
The spatial distribution, Galactic model parameters, and luminosity function of cataclysmic variables (CVs) are established using reestimated trigonometric parallaxes from Gaia DR3.
Remziye Canbay, Selçuk Bilir, Aykut Özdönmez, Tansel Ak   +3 more
doaj   +1 more source

Luminosity function of clusters of galaxies [PDF]

Astronomy & Astrophysics, 2001
15 pages, 14 figures, 4 tables; uses subfigure.sty; accepted for publication in Astronomy and ...
PAOLILLO, MAURIZIO, S. ANDREON, LONGO, GIUSEPPE, E. PUDDU, R. R. GAL, R. SCARAMELLA, S. G. DJORGOVSKI, R. DE CARVALHO   +7 more
openaire   +5 more sources

Unpacking Merger Jets: A Bayesian Analysis of GW170817, GW190425 and Electromagnetic Observations of Short Gamma-Ray Bursts

The Astrophysical Journal, 2023
We present a novel fully Bayesian analysis to constrain short gamma-ray burst (sGRB) jet structures associated with cocoon, wide-angle, and simple top-hat jet models, as well as the binary neutron star (BNS) merger rate.
Fergus Hayes, Ik Siong Heng, Gavin Lamb, En-Tzu Lin, John Veitch, Michael J. Williams   +5 more
doaj   +1 more source

Axions and the luminosity function of white dwarfs: the thin and thick discs, and the halo [PDF]

, 2018
The evolution of white dwarfs is a simple gravothermal process of cooling. Since the shape of their luminosity function is sensitive to the characteristic cooling time, it is possible to use its slope to test the existence of additional sources or sinks ...
J. Isern, E. García–Berro, S. Torres, R. Cojocaru, S. Catalan   +4 more
semanticscholar   +1 more source

Pure Spectroscopic Constraints on UV Luminosity Functions and Cosmic Star Formation History from 25 Galaxies at z spec = 8.61–13.20 Confirmed with JWST/NIRSpec [PDF]

Astrophysical Journal, 2023
We present pure spectroscopic constraints on the UV luminosity functions and cosmic star formation rate (SFR) densities from 25 galaxies at z spec = 8.61–13.20. By reducing the JWST/NIRSpec spectra taken in multiple programs of Early Release Observation,
Y. Harikane, K. Nakajima, M. Ouchi, Hiroya Umeda, Y. Isobe, Y. Ono, Yi Xu, Yechi Zhang   +7 more
semanticscholar   +1 more source

Padé Approximant and Minimax Rational Approximation in Standard Cosmology

Galaxies, 2016
The luminosity distance in the standard cosmology as given by ΛCDM and, consequently, the distance modulus for supernovae can be defined by the Padé approximant.
Lorenzo Zaninetti
doaj   +1 more source

The Luminosity Function of Tidal Disruption Events from Fallback-powered Emission: Implications for the Black Hole Mass Function

The Astrophysical Journal Letters, 2023
Tidal disruption events (TDEs), in which a star is destroyed by the gravitational field of a supermassive black hole (SMBH), are being observed at a high rate owing to the advanced state of survey science.
Eric R. Coughlin, Matt Nicholl
doaj   +1 more source