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H-ATLAS/GAMA: quantifying the morphological evolution of the galaxy population using cosmic calorimetry
Baes, Maarten; Smith, M. W. L.; Graham, Alister W. +28 more
Using results from the Herschel Astrophysical Terrahertz Large-Area Survey (H-ATLAS) and the Galaxy and Mass Assembly (GAMA) project, we show that, for galaxy masses above ≃ 108 M⊙, 51 per cent of the stellar mass-density in the local Universe is in early-type galaxies (ETGs; Sérsic n > 2.5) while 89 per cent of the rate o…
The North Galactic Pole Rift and the Local Hot Bubble
Kuntz, K. D.; Snowden, S. L.; Lallement, R. +2 more
The North Galactic Pole Rift (NGPR) is one of the few distinct neutral hydrogen clouds at high Galactic latitudes that have well-defined distances. It is located at the edge of the Local Cavity (LC) and provides an important test case for understanding the Local Hot Bubble (LHB), the presumed location for the hot diffuse plasma responsible for muc…
Probing large-scale wind structures in Vela X-1 using off-states with INTEGRAL
Sidoli, L.; Bozzo, E.; Pottschmidt, K. +4 more
Vela X-1 is the prototype of the class of wind-fed accreting pulsars in high-mass X-ray binaries hosting a supergiant donor. We have analysed in a systematic way 10 years of INTEGRAL data of Vela X-1 (22-50 keV) and we found that when outside the X-ray eclipse, the source undergoes several luminosity drops where the hard X-rays luminosity goes bel…
Gone in a Blaze of Glory: The Demise of Comet C/2015 D1 (SOHO)
Battams, Karl; Clark, David; Ye, Quan-Zhi +2 more
We present studies of C/2015 D1 (SOHO), the first sunskirting comet ever seen from ground stations over the past half century. The Solar and Heliospheric Observatory (SOHO) witnessed its peculiar light curve with a huge dip followed by a flare-up around perihelion: the dip was likely caused by sublimation of olivines, directly evidenced by a coinc…
Investigating the Consistency of Stellar Evolution Models with Globular Cluster Observations via the Red Giant Branch Bump
Chaboyer, B.; Joyce, M.
Synthetic Red Giant Branch Bump (RGBB) magnitudes are generated with the most recent theoretical stellar evolution models computed with the Dartmouth Stellar Evolution Program (DSEP) code. They are compared to the observational work of Nataf et al., who present RGBB magnitudes for 72 globular clusters. A DSEP model using a chemical composition wit…
Composition of inner-source heavy pickup ions at 1 AU: SOHO/CELIAS/CTOF observations. Implications for the production mechanisms
Wimmer-Schweingruber, R. F.; Berger, L.; Drews, C. +1 more
Context. Pickup ions in the inner heliosphere mainly originate in two sources, one interstellar and one in the inner solar system. In contrast to the interstellar source that is comparatively well understood, the nature of the inner source has not been clearly identified. Former results obtained with the Solar Wind Ion Composition Spectrometer on-…
The Panchromatic STARBurst IRregular Dwarf Survey (STARBIRDS): Observations and Data Archive
McQuinn, Kristen B. W.; Skillman, Evan D.; Mitchell, Noah P.
Understanding star formation in resolved low mass systems requires the integration of information obtained from observations at different wavelengths. We have combined new and archival multi-wavelength observations on a set of 20 nearby starburst and post-starburst dwarf galaxies to create a data archive of calibrated, homogeneously reduced images…
Spatial Structures in the Globular Cluster Distribution of the 10 Brightest Virgo Galaxies
Zezas, A.; Fabbiano, G.; D'Abrusco, R.
We report the discovery of significant localized structures in the projected two-dimensional spatial distributions of the Globular Cluster (GC) systems of the 10 brightest galaxies in the Virgo Cluster. We use catalogs of GCs extracted from the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) Virgo Cluster Survey (ACSVCS) imaging dat…
The companion candidate near Fomalhaut - a background neutron star?
Neuhäuser, R.; Schmidt, T. O. B.; Ginski, C. +3 more
The directly detected planetary mass companion candidate close to the young, nearby star Fomalhaut is a subject of intense discussion. While the detection of common proper motion led to the interpretation as Jovian-mass companion, later non-detections in the infrared raised doubts. Recent astrometric measurements indicate a belt crossing or highly…
Computational Modeling of the Class I Low-Mass Protostar Elias 29 Applying Optical Constants of Ices Processed By High Energy Cosmic Ray Analogs
Rocha, W. R. M.; Pilling, S.
We present a study of the effects of high energy cosmic rays (CRs) over the astrophysical ices, observed toward the embedded class I protostar Elias 29, by using computational modeling and laboratory data. Its spectrum was observed with the Infrared Space Observatory (ISO) covering 2.3-190 µm. The modeling employed the three-dimensional Mont…