ASPITZERUNBIASED ULTRADEEP SPECTROSCOPIC SURVEY

The Vla Ultradeep Field

An integral - field spectroscopic strong lens survey

We present the observational results of a survey for strong gravitational lens systems consisting of extended emission-line galaxies lensed by intervening earlytype galaxies, conducted using integral field units (IFUs) of the Magellan IMACS and Gemini GMOS-N spectrographs. These data are highly valuable for corroborating the lensing interpretation of Hubble Space Telescope imaging data. We show...

Tesis - the Tng Eros Spectroscopic Identification Survey

The epoch at which massive galaxies (Mstar > 1011M⊙) have assembled provides crucial constraints on the current galaxy formation and evolution models. The LCDM hierarchical merging model predicts that massive galaxies are assembled through mergers of preexisting disk galaxies at z≤ 1.5 (Kauffmann & Charlot 1998; Cole et al. 2000). In the alternative view massive ellipticals formed at z> 3 in a ...

A spectroscopic survey of carbon stars in

We summarise the progress of a large-scale spectroscopic survey of carbon stars in the Magellanic Clouds, using the Two-degree Field multi-object system on the Anglo-Australian Telescope. To date we have obtained spectra for about 2000 stars. The spectra have 2 A resolution , S/N 50 and yield radial velocities accurate to about 5 km s ?1. They are therefore ideal for tracing the kinematics of t...

Hypervelocity Stars. I. the Spectroscopic Survey

We discuss our targeted search for hypervelocity stars (HVSs), stars traveling with velocities so extreme that dynamical ejection from a massive black hole is their only suggested origin. Our survey, now half complete, has successfully identified a total of four probable HVSs plus a number of other unusual objects. Here we report the most recently discovered two HVSs: SDSS J110557.45+093439.5 a...