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Confirmation of Small Dynamical and Stellar Masses for Extreme Emission Line Galaxies at z~2
Michael V. Maseda, Arjen van der Wel, Elisabete da Cunha +21
Spectroscopic observations from the Large Binocular Telescope and the Very Large Telescope reveal kinematically narrow lines (~50 km/s) for a sample of 14 Extreme Emission Line Gal…
A CANDELS - 3D-HST Synergy: Resolved Star Formation Patterns at 0.7 < z < 1.5
Stijn Wuyts, Natascha M. Forster Schreiber, Erica J. Nelson +20
We analyze the resolved stellar populations of 473 massive star-forming galaxies at 0.7 < z < 1.5, with multi-wavelength broad-band imaging from CANDELS and Halpha surface brightne…
Direct measurements of dust attenuation in z~1.5 star-forming galaxies from 3D-HST: Implications for dust geometry and star formation rates
Sedona H. Price, Mariska Kriek, Gabriel B. Brammer +11
The nature of dust in distant galaxies is not well understood, and until recently few direct dust measurements have been possible. We investigate dust in distant star-forming galax…
How dead are dead galaxies? Mid-Infrared fluxes of quiescent galaxies at redshift 0.3 < z < 2.5: implications for star formation rates and dust heating
Mattia Fumagalli, Ivo Labbe, Shannon G. Patel +17
We investigate the star formation rates of quiescent galaxies at high redshift (0.3 < z < 2.5) using 3D-HST WFC3 grism spectroscopy and Spitzer mid-infrared data. We select quiesce…
Quiescent Galaxies in the 3D-HST Survey: Spectroscopic Confirmation of a Large Number of Galaxies with Relatively Old Stellar Populations at z~2
Katherine E. Whitaker, Pieter G. van Dokkum, Gabriel Brammer +10
Quiescent galaxies at z~2 have been identified in large numbers based on rest-frame colors, but only a small number of these galaxies have been spectroscopically confirmed to show…
The Structural Evolution of Milky Way-like Star Forming Galaxies since z~1.3
Shannon G. Patel, Mattia Fumagalli, Marijn Franx +14
We follow the structural evolution of star forming galaxies (SFGs) like the Milky Way by selecting progenitors to z~1.3 based on the stellar mass growth inferred from the evolution…
The Assembly of Milky Way-like Galaxies Since z~2.5
Pieter G. van Dokkum, Joel Leja, Erica June Nelson +16
Galaxies with the mass of the Milky Way dominate the stellar mass density of the Universe but it is uncertain how and when they were assembled. Here we study progenitors of these g…
The Spatial Extent and Distribution of Star Formation in 3D-HST Mergers at z~1.5
Kasper B. Schmidt, Hans-Walter Rix, Elisabete da Cunha +14
We present an analysis of the spatial distribution of star formation in a sample of 60 visually identified galaxy merger candidates at z>1. Our sample, drawn from the 3D-HST survey…
The Radial Distribution of Star Formation in Galaxies at z~1 from the 3D-HST Survey
Erica June Nelson, Pieter van Dokkum, Ivelina Momcheva +16
The assembly of galaxies can be described by the distribution of their star formation as a function of cosmic time. Thanks to the WFC3 grism on HST it is now possible to measure th…
Large-Scale Star Formation-Driven Outflows at 1<z<2 in the 3D-HST Survey
Britt F. Lundgren, Gabriel Brammer, Pieter van Dokkum +18
We present evidence of large-scale outflows from three low-mass (log(M/M_sun)~9.75) star-forming (SFR >4 M_sun/yr) galaxies observed at z=1.24, z=1.35 and z=1.75 in the 3D-HST Surv…
3D-HST Grism Spectroscopy of a Gravitationally Lensed, Low-metallicity Starburst Galaxy at z=1.847
Gabriel B. Brammer, Ruben Sanchez-Janssen, Ivo Labbe +17
We present Hubble Space Telescope (HST) imaging and spectroscopy of the gravitational lens SL2SJ02176-0513, a cusp arc at z=1.847. The UV continuum of the lensed galaxy is very blu…
Halpha Equivalent Widths from the 3D-HST survey: evolution with redshift and dependence on stellar mass
Mattia Fumagalli, Shannon G. Patel, Marijn Franx +12
We investigate the evolution of the Halpha equivalent width, EW(Halpha), with redshift and its dependence on stellar mass, taking advantage of the first data from the 3D-HST survey…
3D-HST: A wide-field grism spectroscopic survey with the Hubble Space Telescope
Gabriel Brammer, Pieter van Dokkum, Marijn Franx +27
We present 3D-HST, a near-infrared spectroscopic Treasury program with the Hubble Space Telescope for studying the processes that shape galaxies in the distant Universe. 3D-HST pro…
Spatially resolved Halpha maps and sizes of 57 strongly star-forming galaxies at z~1 from 3D-HST: evidence for rapid inside-out assembly of disk galaxies
Erica June Nelson, Pieter G. van Dokkum, Gabriel Brammer +13
We investigate the build-up of galaxies at z~1 using maps of Halpha and stellar continuum emission for a sample of 57 galaxies with rest-frame Halpha equivalent widths >100 Angstro…
First Results from the 3D-HST Survey: The Striking Diversity of Massive Galaxies at z>1
Pieter G. van Dokkum, Gabriel Brammer, Mattia Fumagalli +26
We present first results from the 3D-HST program, a near-IR spectroscopic survey performed with the Wide Field Camera 3 on the Hubble Space Telescope. We have used 3D-HST spectra t…
The complete census of optically selected AGNs in the Coma Supercluster: the dependence of AGN activity on the local environment
Giuseppe Gavazzi, Giulia Savorgnan, Mattia Fumagalli
To investigate the dependence of the occurrence of active galactic nuclei (AGNs) on local galaxy density, we study the nuclear properties of ~5000 galaxies in the Coma Supercluster…
Constraining the ages of the fireballs in the wake of the dIrr galaxy VCC1217 / IC3418
Mattia Fumagalli, Giuseppe Gavazzi, Roberto Scaramella +1
A complex of Halpha emitting blobs with strong FUV excess is associated to the dIrr galaxy VCC1217 / IC3418 (Hester et al. 2010), and extends up to 17 Kpc in the South-East directi…
A snapshot on galaxy evolution occurring in the Great Wall: the role of Nurture at z=0
Giuseppe Gavazzi, Mattia Fumagalli, Olga Cucciati +1
With the aim of quantifying the contribution of the environment on the evolution of galaxies at z=0 we have used the DR7 catalogue of the Sloan Digital Sky Survey (SDSS) to reconst…