Search Publications
Fast spectrophotometry of WD 1145+017
Villaver, Eva; Raddi, Roberto; Gänsicke, Boris T. +16 more
WD 1145+017 is currently the only white dwarf known to exhibit periodic transits of planetary debris as well as absorption lines from circumstellar gas. We present the first simultaneous fast optical spectrophotometry and broad-band photometry of the system, obtained with the Gran Telescopio Canarias (GTC) and the Liverpool Telescope, respectively…
SHARDS: constraints on the dust attenuation law of star-forming galaxies at z ∼ 2
Barro, Guillermo; Pérez-González, Pablo G.; Cava, Antonio +11 more
We make use of the Survey of High-z Absorption Red and Dead Sources, an ultradeep (<26.5AB) galaxy survey that provides optical photospectra at resolution R ∼ 50, via medium-band filters (FWHM ∼ 150 Å). This data set is combined with ancillary optical and NIR fluxes to constrain the dust attenuation law in the rest-frame NUV region of star-form…
Constraining physical conditions for the PDR of Trumpler 14 in the Carina Nebula
Onaka, Takashi; Okada, Yoko; Le Petit, Franck +5 more
We investigate the physical conditions of the CO gas, based on the submillimeter imaging spectroscopy from a 2' × 7' (1.5 × 5 pc2) area near the young star cluster, Trumpler 14 of the Carina Nebula. The observations presented in this work are taken with the Fourier Transform Spectrometer (FTS) of the Spectral and Photometric Imaging REc…
ALMA observation of the disruption of molecular gas in M87
Simionescu, A.; Allen, S. W.; Werner, N. +3 more
We present the results from Atacama Large Millimeter Array (ALMA) observations centred 40 arcsec (3 kpc in projection) south-east of the nucleus of M87. We report the detection of extended CO (2-1) line emission with a total flux of (5.5 ± 0.6) × 10-18 erg s-1 cm-2 and corresponding molecular gas mass M_{H_2}=(4.7 …
Planck Cold Clumps in the λ Orionis Complex. II. Environmental Effects on Core Formation
Ristorcelli, I.; Soam, Archana; Choi, Minho +29 more
Based on the 850 µm dust continuum data from SCUBA-2 at James Clerk Maxwell Telescope (JCMT), we compare overall properties of Planck Galactic Cold Clumps (PGCCs) in the λ Orionis cloud to those of PGCCs in the Orion A and B clouds. The Orion A and B clouds are well-known active star-forming regions, while the λ Orionis cloud has a different…
The radius of the quiescent neutron star in the globular cluster M13
Campana, S.; Heinke, C. O.; Cohn, H. N. +5 more
X-ray spectra of quiescent low-mass X-ray binaries containing neutron stars can be fit with atmosphere models to constrain the mass and the radius. Mass-radius constraints can be used to place limits on the equation of state of dense matter. We perform fits to the X-ray spectrum of a quiescent neutron star in the globular cluster M13, utilizing da…
Exploring the space density of X-ray selected cataclysmic variables
Schwope, A. D.
The space density of the various classes of cataclysmic variables (CVs) has up to now only been weakly constrained, due to the small number of objects in complete X-ray flux-limited samples and the difficulty in deriving precise distances to CVs. The former limitation still exists. Here the impact of Gaia parallaxes and implied distances on the sp…
On the CGM Fundamental Plane: The Halo Mass Dependency of Circumgalactic H I
Tripp, Todd M.; Prochaska, J. Xavier; Tumlinson, Jason +3 more
We analyze the equivalent widths of H I {{Ly}}α ({W}Lyα }) absorption from the inner (R < 160 kpc) circumgalactic medium (CGM) of 85 galaxies at z ∼ 0 with stellar masses M * ranging 8≤slant {log} {M}* /{M}⊙ ≤slant 11.6. Across three orders of magnitude in stellar mass, the CGM of present-day galaxies…
Large-Scale Survey of the Structure of the Dayside Magnetopause by MMS
Russell, C. T.; Lavraud, B.; Baumjohann, W. +13 more
This paper describes the generation and initial utilization of a database containing 80 vector and scalar quantities, for a total of 8,670 magnetopause and magnetosheath current sheet crossings by MMS1, using plasma and magnetic field data from the Fast Plasma Investigation, Fluxgate Magnetometer, and Hot Plasma Composition Analyzer instruments, a…
A Tale of “Two” Comets: The Primary Volatile Composition of Comet 2P/Encke Across Apparitions and Implications for Cometary Science
Vervack, Ronald J., Jr.; Kawakita, Hideyo; DiSanti, Michael A. +5 more
The highly favorable 2017 apparition of 2P/Encke allowed the first comprehensive comparison of primary volatile abundances in a given comet across multiple apparitions. This apparition offered opportunities to address pressing questions in cometary science, including investigating evolutionary and/or heliocentric distance (R h) effects …