The ALFALFA-SDSS Galaxy Catalog
نویسندگان
چکیده
منابع مشابه
A GMBCG Galaxy Cluster Catalog of 55 , 437 Rich Clusters from SDSS DR 7
We present a large catalog of optically selected galaxy clusters from the application of a new Gaussian Mixture Brightest Cluster Galaxy (GMBCG) algorithm to SDSS Data Release 7 data. The algorithm detects clusters by identifying the red sequence plus Brightest Cluster Galaxy (BCG) feature, which is unique for galaxy clusters and does not exist among field galaxies. Red sequence clustering in c...
متن کاملThe Axis-Ratio Distribution of Galaxy Clusters in the SDSS-C4 Catalog as a New Cosmological Probe
We analyze the C4 catalog of 748 galaxy clusters from the Sloan Digital Sky Survey (SDSS) to determine the axis-ratio distribution of their projected two dimensional profiles. It is found that the mean axis-ratio increases with cluster mass and luminosity, which is inconsistent with the result from N-body simulations where the cluster mean-axis-ratio decreases with mass. We also derive a theore...
متن کاملColor Variability of Asteroids in SDSS Moving Object Catalog
We report a detection of statistically significant color variations for a sample of 7,531 multiply observed asteroids that are listed in the Sloan Digital Sky Survey Moving Object Catalog. Using 5-band photometric observations accurate to ∼0.02 mag, we detect color variations in the range 0.06-0.11 mag (rms). These variations appear uncorrelated with asteroids physical characteristics such as d...
متن کاملMock 2dF and SDSS galaxy redshift surveys
We present a comprehensive set of mock 2dF and SDSS galaxy redshift surveys constructed from a set of large, high-resolution cosmological N -body simulations. The radial selection functions and geometrical limits of the catalogues mimic those of the genuine surveys. The catalogues span a wide range of cosmologies, including both open and flat universes. In all the models the galaxy distribution...
متن کاملComputer-generated visual morphology catalog of ∼3,000,000 SDSS galaxies
We applied computer analysis to classify the broad morphological type of ∼ 3 · 10 SDSS galaxies. The catalog provides for each galaxy the DR8 object ID, right ascension, declination, and the certainty of the automatic classification to spiral or elliptical. The certainty of the classification allows controlling the accuracy of a subset of galaxies by sacrificing some of the least certain classi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2020
ISSN: 1538-3881
DOI: 10.3847/1538-3881/abc018