Results 21 to 30 of about 3,858 (229)
Measuring Distances to Low-luminosity Galaxies Using Surface Brightness Fluctuations [PDF]
The Astrophysical Journal, 2021 Abstract We present an in-depth study of surface brightness fluctuations (SBFs) in low-luminosity stellar systems. Using the MIST models, we compute theoretical predictions for absolute SBF magnitudes in the LSST, HST ACS/WFC, and proposed Roman Space Telescope filter systems.
Johnny P. Greco +4 more
openaire +2 more sources
Observations of surface-brightness fluctuations in Virgo
The Astronomical Journal, 1990 VRI photometric observations of surface-brightness fluctuation in 13 Virgo Cluster galaxies, M32, and NGC 3379, obtained using an 800 x 800 CCD array on the 4-m telescope at KPNO during March 1989, are reported. The data-reduction techniques are described in detail, and the results are presented in tables and graphs.
John L. Tonry +2 more
openaire +1 more source
Towards gradient detection of surface brightness fluctuations
, 2022 Abstract: Surface Brightness Fluctuations (SBF) magnitudes have been proved as a potential tool for the study of composite stellar populations in galaxies. In particular, we focus on the detection of metal-poor secondary components in metal-rich dominated early type galaxies. Our current work consists in studying radial profiles of SBFs, hence we study
Pablo Rodríguez Beltrán +3 more
openaire +2 more sources
Cluster detection from surface-brightness fluctuations in SDSS data [PDF]
Astronomy & Astrophysics, 2002 7 pages, submitted to Astronomy & ...
Bartelmann, M., White, S.
openaire +3 more sources
The Astrophysical Journal, 2002 We have measured KS-band (2.0-2.3 μm) surface brightness fluctuations (SBFs) of 19 early-type galaxies in the Fornax Cluster. Fornax is ideally suited both for calibrating SBFs as distance indicators and for using SBFs to probe the unresolved stellar content of early-type galaxies. Combining our results with published data for other nearby clusters, we
Liu, Michael C. +2 more
openaire +2 more sources
Stellar populations and surface brightness fluctuations: new observations and models [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 24 pages with 17 embedded figures.
Blakeslee, John P. +2 more
openaire +2 more sources
Surface brightness fluctuations as primary and secondary distance indicators [PDF]
Astrophysics and Space Science, 2012 The surface brightness fluctuations (SBF) method measures the variance in a galaxy's light distribution arising from fluctuations in the numbers and luminosities of individual stars per resolution element. Once calibrated for stellar population effects, SBF measurements with HST provide distances to early-type galaxies with unrivaled precision. Optical
openaire +3 more sources
Surface Brightness Fluctuations: a theoretical point of view
, 2002 We present new theoretical evaluations of optical and near-IR Surface Brightness Fluctuations (SBF) magnitudes for single-burst stellar populations in the age range t=5-15 Gyr and metallicity from $Z_{\sun}/200$ to $2Z_{\sun}$. Our theoretical predictions can be successfully used to derive reliable distance evaluations. They also appear to be a new and
Cantiello, M. +3 more
openaire +3 more sources
Infrared Surface Brightness Fluctuations of Magellanic Star Clusters
The Astrophysical Journal, 2004 We present surface brightness fluctuations (SBFs) in the near--IR for 191 Magellanic star clusters available in the Second Incremental and All Sky Data releases of the Two Micron All Sky Survey (2MASS), and compare them with SBFs of Fornax Cluster galaxies and with predictions from stellar population models. Our goals are twofold.
Gonzalez, Rosa A. +2 more
openaire +2 more sources
Surface Brightness Fluctuations and the Stellar Population in Elliptical Galaxies [PDF]
Symposium - International Astronomical Union, 1995 The Surface Brightness Fluctuation (SBF) method introduced by Tonry & Schneider (1988) is known as a distance indicator. However, we focus on another aspect. Our aim is to obtain new information on the stellar population that constitutes an elliptical galaxy by comparing radial gradients in SBF magnitudes with traditional broad-band colours.
Marianne Sodemann, Bjarne Thomsen
openaire +1 more source