Search Publications
A Resolved Map of the Infrared Excess in a Lyman Break Galaxy at z = 3
Lehmer, B. D.; Bremer, M.; Kubo, M. +13 more
We have observed the dust continuum of 10 z = 3.1 Lyman break galaxies with the Atacama Large Millimeter/submillimeter Array at ∼450 mas resolution in Band 7. We detect and resolve the 870 µm emission in one of the targets with a flux density of S 870 = 192 ± 57 µJy, and measure a stacked 3σ signal of S 870 = 67 ±…
Ultraviolet Halos around Spiral Galaxies. I. Morphology
Bregman, Joel N.; Hodges-Kluck, Edmund; Cafmeyer, Julian
We examine ultraviolet halos around a sample of highly inclined galaxies within 25 Mpc to measure their morphology and luminosity. Despite contamination from galactic light scattered into the wings of the point-spread function, we find that ultraviolet (UV) halos occur around each galaxy in our sample. Around most galaxies the halos form a thick, …
Dust Attenuation of the Nebular Regions of z ~ 2 Star-forming Galaxies: Insight from UV, IR, and Emission Lines
De Barros, S.; Reddy, N.; Shivaei, I.
We use a sample of 149 spectroscopically confirmed UV-selected galaxies at z ∼ 2 to investigate the relative dust attenuation of the stellar continuum and the nebular emission lines. For each galaxy in the sample, at least one rest-frame optical emission line (Hα/[N II] λ6583 or [O III] λ5007) measurement has been taken from the litterature, and 4…
Comet 322P/SOHO 1: An Asteroid with the Smallest Perihelion Distance?
Snodgrass, Colin; Knight, Matthew M.; Kelley, Michael S. P. +1 more
We observed comet 322P/SOHO 1 (P/1999 R1) from the ground and with the Spitzer Space Telescope when it was between 2.2 and 1.2 au from the Sun. These are the first observations of any Solar and Heliospheric Observatory (SOHO)-discovered periodic comet by a non-solar observatory and allow us to investigate its behavior under typical cometary circum…
Dense Gas in Molecular Cores Associated with Planck Galactic Cold Clumps
Liu, Hong-Li; Liu, Tie; Yuan, Jinghua +7 more
We present the first survey of dense gas toward Planck Galactic Cold Clumps (PGCCs). Observations in the J = 1-0 transitions of HCO+ and HCN toward 621 molecular cores associated with PGCCs were performed using the Purple Mountain Observatory’s 13.7 m telescope. Among them, 250 sources were detected, including 230 cores detected in HCO<…
HST Imaging of the Local Volume Dwarf Galaxies Pisces A and B: Prototypes for Local Group Dwarfs
Dolphin, Andrew E.; Weisz, Daniel R.; Putman, Mary E. +3 more
We present observations of the Pisces A and B galaxies with the Advanced Camera for Surveys on the Hubble Space Telescope. Photometry from these images clearly resolves a red giant branch (RGB) for both objects, demonstrating that they are nearby dwarf galaxies. We describe a Bayesian inferential approach to determining the distance to these galax…
Mapping Seyfert and LINER Excitation Modes in the Inner kpc of NGC 3393
Elvis, Martin; Raymond, John; Storchi-Bergmann, Thaisa +5 more
We mapped the extended narrowline region (ENLR) of NGC 3393 on scales of r≲ 4\prime\prime (∼ 1 kpc) from the nucleus using emission line images of Hα λ6563, [O III]λ 5007, and [S II]λ λ 6717,6731, taken with the Hubble Space Telescope as part of the CHandra survey of Extended Emission line Regions in nearby Seyfert galaxies (CHEERS). By…
ALMA Imaging of the CO (6-5) Line Emission in NGC 7130*
Inami, Hanae; Murphy, Eric; van der Werf, Paul +11 more
In this paper, we report our high-resolution (0.″20 × 0.″14 or ∼70 × 49 pc) observations of the CO(6-5) line emission, which probes warm and dense molecular gas, and the 434 µm dust continuum in the nuclear region of NGC 7130, obtained with the Atacama Large Millimeter Array (ALMA). The CO line and dust continuum fluxes detected in our ALMA …
A Stellar Velocity Dispersion for a Strongly-lensed, Intermediate-mass Quiescent Galaxy at z=2.8
Franx, Marijn; Muzzin, Adam; van de Sande, Jesse +1 more
Measuring stellar velocity dispersions of quiescent galaxies beyond z∼ 2 is observationally challenging. Such measurements require near-infrared spectra with a continuum detection of at least moderate signal to noise, often necessitating long integrations. In this paper, we present deep X-Shooter spectroscopy of one of only two known gravitational…
Comparison between 2D and 3D Parameters of 306 Front-side Halo CMEs from 2009 to 2013
Cho, K. -S.; Moon, Y. -J.; Jang, Soojeong +2 more
We investigate 306 LASCO front-side halo (partial and full) CMEs from 2009 to 2013, which are well-observed by both the Solar and Heliospheric Observatory (SOHO) and the Solar TErrestrial RElations Observatory (STEREO). These CMEs have two-dimensional (2D) parameters, such as speed, angular width, and propagation direction, from a single spacecraf…