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Spatially-resolved dust maps from Balmer decrements in galaxies at z~1.4
Erica June Nelson, Pieter G. van Dokkum, Ivelina G. Momcheva +6
We derive average radial gradients in the dust attenuation towards HII regions in 609 galaxies at z~1.4, using measurements of the Balmer decrement out to r~3kpc. The Balmer decrem…
The 3D-HST Survey: Hubble Space Telescope WFC3/G141 grism spectra, redshifts, and emission line measurements for galaxies
Ivelina G. Momcheva, Gabriel B. Brammer, Pieter G. van Dokkum +27
We present reduced data and data products from the 3D-HST survey, a 248-orbit HST Treasury program. The survey obtained WFC3 G141 grism spectroscopy in four of the five CANDELS fie…
Leveraging 3D-HST Grism Redshifts to Quantify Photometric Redshift Performance
Rachel Bezanson, David A. Wake, Gabriel B. Brammer +10
We present a study of photometric redshift accuracy in the 3D-HST photometric catalogs, using 3D-HST grism redshifts to quantify and dissect trends in redshift accuracy for galaxie…
Galaxy Structure as a Driver of the Star Formation Sequence Slope and Scatter
Katherine E. Whitaker, Marijn Franx, Rachel Bezanson +12
It is well established that (1) star-forming galaxies follow a relation between their star formation rate (SFR) and stellar mass (M), the "star-formation sequence", and (…
Where stars form: inside-out growth and coherent star formation from HST Halpha maps of 2676 galaxies across the main sequence at z~1
Erica June Nelson, Pieter G. van Dokkum, Natascha M. Förster Schreiber +17
We present Ha maps at 1kpc spatial resolution for star-forming galaxies at z~1, made possible by the WFC3 grism on HST. Employing this capability over all five 3D-HST/CANDELS field…
Forming Compact Massive Galaxies
Pieter G. van Dokkum, Erica June Nelson, Marijn Franx +13
In this paper we study a key phase in the formation of massive galaxies: the transition of star forming galaxies into massive (M_stars~10^11 Msun), compact (r_e~1 kpc) quiescent ga…