Search Publications
MIRO observations of subsurface temperatures of the nucleus of 67P/Churyumov-Gerasimenko
Hartogh, Paul; Lellouch, Emmanuel; Keller, Horst Uwe +20 more
Observations of the nucleus of 67P/Churyumov-Gerasimenko in the millimeter-wave continuum have been obtained by the Microwave Instrument for the Rosetta Orbiter (MIRO). We present data obtained at wavelengths of 0.5 mm and 1.6 mm during September 2014 when the nucleus was at heliocentric distances between 3.45 and 3.27 AU. The data are fit to simp…
Resonant interactions and chaotic rotation of Pluto's small moons
Hamilton, D. P.; Showalter, M. R.
Four small moons--Styx, Nix, Kerberos and Hydra--follow near-circular, near-equatorial orbits around the central `binary planet' comprising Pluto and its large moon, Charon. New observational details of the system have emerged following the discoveries of Kerberos and Styx. Here we report that Styx, Nix and Hydra are tied together by a three-body …
Mapping the average AGN accretion rate in the SFR-M* plane for Herschel-selected galaxies at 0 < z ≤ 2.5
Berta, S.; Lutz, D.; Cimatti, A. +15 more
We study the relation of AGN accretion, star formation rate (SFR) and stellar mass (M*) using a sample of ≈8600 star-forming galaxies up to z = 2.5 selected with Herschel imaging in the GOODS and COSMOS fields. For each of them we derive SFR and M*, both corrected, when necessary, for emission from an active galactic nucleus …
A Spectroscopic Analysis of the Galactic Globular Cluster NGC 6273 (M19)
Caldwell, Nelson; Rich, R. Michael; Johnson, Christian I. +4 more
A combined effort utilizing spectroscopy and photometry has revealed the existence of a new globular cluster class. These “anomalous” clusters, which we refer to as “iron-complex” clusters, are differentiated from normal clusters by exhibiting large (≳0.10 dex) intrinsic metallicity dispersions, complex sub-giant branches, and correlated [Fe/H] an…
Surveying Galaxy Proto-clusters in Emission: A Large-scale Structure at z = 2.44 and the Outlook for HETDEX
Finkelstein, Steven L.; Schneider, Donald P.; Blanc, Guillermo A. +12 more
Galaxy proto-clusters at z≳ 2 provide a direct probe of the rapid mass assembly and galaxy growth of present-day massive clusters. Because of the need for precise galaxy redshifts for density mapping and the prevalence of star formation before quenching, nearly all the proto-clusters known to date were confirmed by spectroscopy of galaxies with st…
First Results from the Hubble OPAL Program: Jupiter in 2015
Wong, Michael H.; Orton, Glenn S.; Simon, Amy A.
The Hubble 2020: Outer Planet Atmospheres Legacy program is generating new yearly global maps for each of the outer planets. This report focuses on Jupiter results from the first year of the campaign. The zonal wind profile was measured and is in the same family as the Voyager and Cassini era profiles, showing some variation in mid- to high-latitu…
The growth of the galaxy cluster Abell 85: mergers, shocks, stripping and seeding of clumping
Simionescu, A.; Mernier, F.; Takahashi, T. +5 more
We present the results of deep Chandra, XMM-Newton and Suzaku observations of the nearby galaxy cluster Abell 85, which is currently undergoing at least two mergers, and in addition shows evidence for gas sloshing which extends out to r ≈ 600 kpc. One of the two infalling subclusters, to the south of the main cluster centre, has a dense, X-ray bri…
C III] Emission in Star-forming Galaxies Near and Far
Dahle, H.; Rigby, J. R.; Bayliss, M. B. +5 more
We measure [C iii] 1907, C iii] 1909 Å emission lines in 11 gravitationally lensed star-forming galaxies at z ∼ 1.6-3, finding much lower equivalent widths than previously reported for fainter lensed galaxies. While it is not yet clear what causes some galaxies to be strong C iii] emitters, C iii] emission is not a universal property of distant st…
Rest-frame Optical Spectra and Black Hole Masses of 3 < z < 6 Quasars
Goto, Tomotsugu; Nakagawa, Takao; Fan, Xiaohui +11 more
We present the rest-frame optical spectral properties of 155 luminous quasars at 3.3 < z < 6.4 taken with the AKARI space telescope, including the first detection of the Hα emission line as far out as z ∼ 6. We extend the scaling relation between the rest-frame optical continuum and the line luminosity of active galactic nuclei (AGNs) to the…
Ultraviolet Morphology and Unobscured UV Star Formation Rates of CLASH Brightest Cluster Galaxies
Donahue, Megan; Voit, G. Mark; Moustakas, John +7 more
Brightest cluster galaxies (BCGs) are usually quiescent, but many exhibit star formation. Here we exploit the opportunity provided by rest-frame UV imaging of galaxy clusters in the Cluster Lensing and Supernovae with Hubble (CLASH) Multi-Cycle Treasury Project to reveal the diversity of UV morphologies in BCGs and to compare them with recent simu…