Search Publications
Molecular Gas Reservoirs in Cluster Galaxies at z = 1.46
Tamura, Yoichi; Kohno, Kotaro; Suzuki, Tomoko L. +7 more
We present molecular gas reservoirs of 18 galaxies associated with the XMMXCS J2215.9-1738 cluster at z = 1.46. From Band 7 and Band 3 data of the Atacama Large Millimeter/submillimeter Array, we detect dust continuum emission at 870 µm and the CO J = 2-1 emission line from 8 and 17 member galaxies, respectively, within a clustercentric radi…
A low Lyman Continuum escape fraction of <10 per cent for extreme [O III] emitters in an overdensity at z ∼ 3.5
Tran, Kim-Vy H.; Forrest, Ben; Holden, Bradford P. +2 more
Recent work has suggested that extreme [O III] emitting star-forming galaxies are important to reionization. Relatedly, [O III]/[O II] has been put forward as an indirect estimator of the Lyman Continuum (LyC) escape fraction (fesc) at z ≳ 4.5 when the opaque IGM renders LyC photons unobservable. Using deep archival U-band (VLT/VIMOS) i…
Equatorial locations of water on Mars: Improved resolution maps based on Mars Odyssey Neutron Spectrometer data
Elphic, Richard C.; Massey, Richard J.; Maurice, Sylvestre +4 more
We present a map of the near subsurface hydrogen distribution on Mars, based on epithermal neutron data from the Mars Odyssey Neutron Spectrometer. The map's spatial resolution is approximately improved two-fold via a new form of the pixon image reconstruction technique. We discover hydrogen-rich mineralogy far from the poles, including ∼10 wt.% w…
Characterising open clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution
Jordi, C.; Casamiquela, L.; Cantat-Gaudin, T. +8 more
Context. The Tycho-Gaia Astrometric Solution (TGAS) subset of the first Gaia catalogue contains an unprecedented sample of proper motions and parallaxes for two million stars brighter than G 12 mag.
Aims: We take advantage of the full astrometric solution available for those stars to identify the members of known open clusters and compute mea…
RELICS: A Candidate z ∼ 10 Galaxy Strongly Lensed into a Spatially Resolved Arc
Ouchi, Masami; Frye, Brenda L.; Strait, Victoria +27 more
The most distant galaxies known are at z ∼ 10-11, observed 400-500 Myr after the Big Bang. The few z ∼ 10-11 candidates discovered to date have been exceptionally small, barely resolved, if at all, by the Hubble Space Telescope. Here we present the discovery of SPT0615-JD1, a fortuitous z ∼ 10 (z phot = {9.9}-0.6+0.8
First gas-phase metallicity gradients of 0.1 ≲ z ≲ 0.8 galaxies with MUSE
Finley, Hayley; Carton, David; Brinchmann, Jarle +8 more
Galaxies at low-redshift typically possess negative gas-phase metallicity gradients (centres more metal-rich than their outskirts), whereas it is not uncommon to observe positive metallicity gradients in higher-redshift galaxies (z ≳ 0.6). Bridging these epochs, we present gas-phase metallicity gradients of 84 star-forming galaxies between 0.08 &l…
On the Detection of Coronal Dimmings and the Extraction of Their Characteristic Properties
Temmer, M.; Veronig, A. M.; Vanninathan, K. +2 more
Coronal dimmings are distinct phenomena associated with coronal mass ejections (CMEs). The study of coronal dimmings and the extraction of their characteristic parameters help us to obtain additional information regarding CMEs, especially on the initiation and early evolution of Earth-directed CMEs. We present a new approach to detect coronal dimm…
Super-Eddington accretion on to the neutron star NGC 7793 P13: Broad-band X-ray spectroscopy and ultraluminous X-ray sources
Harrison, F. A.; Ptak, A.; Stern, D. +8 more
We present a detailed, broad-band X-ray spectral analysis of the ultraluminous X-ray source (ULX) pulsar NGC 7793 P13, a known super-Eddington source, utilizing data from the XMM-Newton, NuSTAR and Chandra observatories. The broad-band XMM-Newton+NuSTAR spectrum of P13 is qualitatively similar to the rest of the ULX sample with broad-band coverage…
Investigation of the inner structures around HD 169142 with VLT/SPHERE
Rouan, D.; Ménard, F.; Quanz, S. P. +47 more
We present observations of the Herbig Ae star HD 169142 with the VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) (K1K2 and H2H3 bands) and the Integral Field Spectrograph (IFS) (Y, J and H bands). We detect several bright blobs at ∼180 mas separation from the star, and a faint arc-like structure in the IFS data. Our refer…
Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue
Soto, M. G.; Jenkins, J. S.
Context. The detection and subsequent characterisation of exoplanets are intimately linked to the characteristics of their host star. Therefore, it is necessary to study the star in detail in order to understand the formation history and characteristics of their companion(s).
Aims: Our aims are to develop a community tool that allows the auto…