Physical parameters for 135 early-type galaxies in the Extended Groth
Strip (EGS). For each galaxy equatorial coordinates, total magnitudes in
B and g-bands, redshift, velocity dispersion, effective radius, surface
brightness, stellar mass, Sersic index, type (elliptical or lenticular)
and signal-to-noise of the spectrum are given.
(1 data file).
IAUC 8268 available at Central Bureau for Astronomical Telegrams.
Context. Star formation rate (SFR), metallicity, and stellar mass are among the most important parameters of star-forming (SF) galaxies characterizing their formation and evolution. They are known to be related to each other both at low and high redshift in the mass-metallicity, mass-SFR, and metallicity-SFR relations. <BR /> Aims: We demonstrate the existence of a plane in a 3D parameter space defined by the axes SFR [log (SFR)(M<SUB>ȯ</SUB> yr<SUP>-1</SUP>)] , gas metallicity [12 + log (O/H)], and stellar mass [log (M<SUB>star</SUB>/M<SUB>ȯ</SUB>)] of SF galaxies. <BR />...
continuaNot Available
We report the discovery of peculiar features in the optical spectrum of 4C+22.25, a flat spectrum radio quasar at z = 0.4183 observed in the Sloan Digital Sky Survey and in a dedicated spectroscopic follow-up from the Nordic Optical Telescope. The Hβ and Hα lines show broad profiles (FWHM ~ 12,000 km s<SUP>-1</SUP>), faint fluxes, and extreme offsets (Δv = 8700 ± 1300 km s<SUP>-1</SUP>) with respect to the narrow emission lines. These features show no significant variation in a time lag of ~3.1 yr (rest frame). We rule out possible interpretations based on the superposition of two...
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