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A Lyman Break Galaxy in the Epoch of Reionization from HST Grism Spectroscopy
James E. Rhoads, Sangeeta Malhotra, Daniel Stern +27
We present observations of a luminous galaxy at redshift z=6.573 --- the end of the reioinization epoch --- which has been spectroscopically confirmed twice. The first spectroscopi…
The ionized gas in the central region of NGC 5253: 2D mapping of the physical and chemical properties
Ana Monreal-Ibero, Jeremy R. Walsh, Jose M. Vilchez
ABRIDGED: NGC5253 was previously studied by our group with the aim to elucidate in detail the starburst interaction processes. Some open issues regarding the 2D structure of the ma…
Metallicities of Emission-Line Galaxies from HST ACS PEARS and HST WFC3 ERS Grism Spectroscopy at 0.6 < z < 2.4
Lifang Xia, Sangeeta Malhotra, James Rhoads +9
Galaxies selected on the basis of their emission line strength show low metallicities, regardless of their redshifts. We conclude this from a sample of faint galaxies at redshifts…
The Light Element Abundance Distribution in NGC 5128 from Planetary Nebulae
J. R. Walsh, G. H. Jacoby, R. F. Peletier +1
The light element abundance pattern from many planetary nebulae (PNe) covering the upper 4 mag. of the [O III] luminosity function was observed with ESO VLT FORS1 multi-slit. Spect…
Spectroscopy of the spatially-extended Lya emission around a QSO at z=6.4
Tomotsugu Goto, Yousuke Utsumi, Jeremy R. Walsh +3
We have taken a deep, moderate-resolution Keck/Deimos spectra of QSO, CFHQS2329, at z=6.4. At the wavelength of Lya, the spectrum shows a spatially-extended component, which is sig…
Euclid Definition Study Report
R. Laureijs, J. Amiaux, S. Arduini +216
Euclid is a space-based survey mission from the European Space Agency designed to understand the origin of the Universe's accelerating expansion. It will use cosmological probes to…