Search Publications
Missions
Journals
Publication Years
Statistical properties of dwarf novae-type cataclysmic variables: the outburst catalogue
Drake, Andrew J.; Coppejans, Deanne L.; Knigge, Christian +5 more
The outburst catalogue contains a wide variety of observational properties for 722 dwarf nova (DN)-type cataclysmic variables (CVs) and 309 CVs of other types from the Catalina Real-time Transient Survey. In particular, it includes the apparent outburst and quiescent V-band magnitudes, duty cycles, limits on the recurrence time, upper and lower li…
Four-fluid MHD simulations of the plasma and neutral gas environment of comet 67P/Churyumov-Gerasimenko near perihelion
Hansen, Kenneth C.; Gombosi, Tamas I.; Combi, Michael R. +9 more
The neutral and plasma environment is critical in understanding the interaction of the solar wind and comet 67P/Churyumov-Gerasimenko (CG), the target of the European Space Agency's Rosetta mission. To serve this need and support the Rosetta mission, we have developed a 3-D four-fluid model, which is based on BATS-R-US (Block-Adaptive Tree Solarwi…
Revisiting the ultraluminous supersoft source in M 101: an optically thick outflow model
Soria, Roberto; Kong, Albert
The M 101 galaxy contains the best-known example of an ultraluminous supersoft source (ULS), dominated by a thermal component at kT ≈ 0.1 keV. The origin of the thermal component and the relation between ULSs and standard (broad-band spectrum) ultraluminous X-ray sources are still controversial. We re-examined the X-ray spectral and timing propert…
The initial conditions for stellar protocluster formation. III. The Herschel counterparts of the Spitzer Dark Cloud catalogue
Peretto, N.; Ward-Thompson, D.; Fuller, G. A. +4 more
Context. Galactic plane surveys of pristine molecular clouds are key for establishing a Galactic-scale view of star formation. For this reason, an unbiased sample of infrared dark clouds in the 10° < | l | < 65°, | b | < 1° region of the Galactic plane was built using Spitzer 8 µm extinction. However, intrinsic fluctuations in the m…
The Influence of the Extreme Ultraviolet Spectral Energy Distribution on the Structure and Composition of the Upper Atmosphere of Exoplanets
Guo, J. H.; Ben-Jaffel, Lotfi
By varying the profiles of stellar extreme ultraviolet (EUV) spectral energy distributions (SEDs), we tested the influences of stellar EUV SEDs on the physical and chemical properties of an escaping atmosphere. We apply our model to study four exoplanets: HD 189733b, HD 209458b, GJ 436b, and Kepler-11b. We find that the total mass loss rates of an…
Toward Precision Black Hole Masses with ALMA: NGC 1332 as a Case Study in Molecular Disk Dynamics
Ho, Luis C.; Barth, Aaron J.; Buote, David A. +4 more
We present first results from a program of Atacama Large Millimeter/submillimeter Array (ALMA) CO(2-1) observations of circumnuclear gas disks in early-type galaxies. The program was designed with the goal of detecting gas within the gravitational sphere of influence of the central black holes (BHs). In NGC 1332, the 0.″3-resolution ALMA data reve…
The Thermal State of KS 1731-260 after 14.5 years in Quiescence
Homan, Jeroen; Miller, Jon M.; Cackett, Edward M. +7 more
Crustal cooling of accretion-heated neutron stars provides insight into the stellar interior of neutron stars. The neutron star X-ray transient, KS 1731-260, was in outburst for 12.5 years before returning to quiescence in 2001. We have monitored the cooling of this source since then through Chandra and XMM-Newton observations. Here we present a 1…
Mass-loading of the solar wind at 67P/Churyumov-Gerasimenko. Observations and modelling
Holmström, M.; Behar, E.; Nilsson, H. +4 more
Context. The first long-term in-situ observation of the plasma environment in the vicinity of a comet, as provided by the European Rosetta spacecraft.
Aims: Here we offer characterisation of the solar wind flow near 67P/Churyumov-Gerasimenko (67P) and its long term evolution during low nucleus activity. We also aim to quantify and interpret t…
ALMA Observations of Lyα Blob 1: Halo Substructure Illuminated from Within
Taniguchi, Y.; Clements, D. L.; Avison, A. +26 more
We present new Atacama Large Millimeter/Submillimeter Array (ALMA) 850 µm continuum observations of the original Lyα Blob (LAB) in the SSA22 field at z = 3.1 (SSA22-LAB01). The ALMA map resolves the previously identified submillimeter source into three components with a total flux density of S 850 = 1.68 ± 0.06 mJy, corresponding …
Rotation-Activity Correlations in K and M Dwarfs. I. Stellar Parameters and Compilations of v sin I and P/sin I for a Large Sample of Late-K and M Dwarfs
Mullan, D. J.; Gebran, M.; Houdebine, E. R. +1 more
The reliable determination of rotation-activity correlations (RACs) depends on precise measurements of the following stellar parameters: T eff, parallax, radius, metallicity, and rotational speed v sin I. In this paper, our goal is to focus on the determination of these parameters for a sample of K and M dwarfs. In a future paper (Paper…