Search Publications

The star formation history of redshift z ~ 2 galaxies: the role of the infrared prior

Nonino, Mario; Lapi, Andrea; De Zotti, Gianfranco +3 more

We build a sample of 298 spectroscopically-confirmed galaxies at redshift z ~ 2, selected in the z₈₅₀-band from the GOODS-MUSIC catalog. By utilizing the rest frame 8 µm luminosity as a proxy of the star formation rate (SFR), we check the accuracy of the standard SED-fitting technique, finding it is not accurate enough to provide …

Revisiting the dichotomy of early-type galaxies

Hao, Cai-Na; Xia, Xiao-Yang; He, Yan-Qin

We study the relationship between isophotal shapes, central light profiles and kinematic properties of early-type galaxies (ETGs) based on a compiled sample of 184 ETGs. These sample galaxies are included in Data Release 8 of the Sloan Digital Sky Survey and have central light profiles and kinematic properties available from the literature, which …

Long term optical variability of bright X-ray point sources in elliptical galaxies

Shalima, P.; Jithesh, V.; Jeena, K. +3 more

We present long term optical variability studies of bright X-ray sources in four nearby elliptical galaxies with the Chandra Advanced CCD Imaging Spectrometer array (ACIS-S) and observations from the Hubble Space Telescope (HST) Advanced Camera for Surveys. Out of the 46 bright (X-ray counts > 60) sources that are in the common field of view of…