Search Publications
The supernova remnant population of the Small Magellanic Cloud
Maitra, Chandreyee; Ballet, Jean; Sasaki, Manami +6 more
Aims: We present a comprehensive study on the supernova remnant (SNR) population of the Small Magellanic Cloud (SMC). We measured multiwavelength properties of the SMC SNRs and compare them to those of the Large Magellanic Cloud (LMC) population.
Methods: This study combines the large dataset of XMM-Newton observations of the SMC, archiv…
Helium Variation in Four Small Magellanic Cloud Globular Clusters
Milone, Antonino P.; Dotter, Aaron; Lagioia, Edoardo P. +1 more
The multiple stellar populations (MPs) of the ∼11-13 Gyr old globular clusters (GCs) in our Galaxy are characterized by the different content of several light elements. These elements describe well-defined patterns like the C-N and the Na-O anticorrelations and the He-N and Na-N correlations. The discovery of MPs in Magellanic Cloud GCs opened up …
Scattered light shadows in warped protoplanetary discs
Pinte, Christophe; Mentiplay, Daniel; Alexander, Richard +2 more
3D hydrodynamic numerical simulations have demonstrated that the structure of a protoplanetary disc may be strongly affected by a planet orbiting in a plane that is misaligned to the disc. When the planet is able to open a gap, the disc is separated into an inner, precessing disc and an outer disc with a warp. In this work, we compute infrared sca…
Rapid Rotation in the Kepler Field: Not a Single Star Phenomenon
Simonian, Gregory V. A.; Pinsonneault, Marc H.; Terndrup, Donald M.
Tens of thousands of rotation periods have been measured in the Kepler fields, including a substantial fraction of rapid rotators. We use Gaia parallaxes to distinguish photometric binaries (PBs; from single stars on the unevolved lower main sequence, and compare their distribution of rotation properties to those of single stars both with and with…
The GAPS Programme with HARPS-N at TNG. XIX. Atmospheric Rossiter-McLaughlin effect and improved parameters of KELT-9b
Scandariato, G.; Pagano, I.; Fossati, L. +40 more
Aims: In the framework of the GAPS project, we observed the planet-hosting star KELT-9 (A-type star, v sin i 110 km s-1) with the HARPS-N spectrograph at the Telescopio Nazionale Galileo. In this work we analyse the spectra and the extracted radial velocities to constrain the physical parameters of the system and to detect the plan…
A Super-Earth and Sub-Neptune Transiting the Late-type M Dwarf LP 791-18
Mikal-Evans, Thomas; Latham, David W.; Tamura, Motohide +57 more
Planets occur most frequently around cool dwarfs, but only a handful of specific examples are known to orbit the latest-type M stars. Using TESS photometry, we report the discovery of two planets transiting the low-mass star called LP 791-18 (identified by TESS as TOI 736). This star has spectral type M6V, effective temperature 2960 K, and radius …
The MOSDEF Survey: Broad Emission Lines at z = 1.4-3.8
Siana, Brian; Shapley, Alice E.; Azadi, Mojegan +12 more
We present results from the MOSFIRE Deep Evolution Field survey on broad flux from the nebular emission lines Hα, [N II], [O III], Hβ, and [S II]. The sample consists of 127 star-forming galaxies at 1.37 < z < 2.61 and 84 galaxies at 2.95 < z < 3.80. We decompose the emission lines using narrow and broad Gaussian components that we def…
A 3D view of the Hyades stellar and sub-stellar population
Smart, R. L.; Lodieu, N.; Pérez-Garrido, A. +1 more
Aims: Our scientific goal is to provide a 3D map of the nearest open cluster to the Sun, the Hyades, combining the recent release of Gaia astrometric data, ground-based parallaxes of sub-stellar member candidates and photometric data from surveys which cover large areas of the cluster.
Methods: We combined the second Gaia release with gr…
Optical polarised phase function of the HR 4796A dust ring
Pinte, C.; Ménard, F.; Avenhaus, H. +23 more
Context. The scattering properties of the dust originating from debris discs are still poorly known. The analysis of scattered light is however a powerful remote-sensing tool to understand the physical properties of dust particles orbiting other stars. Scattered light is indeed widely used to characterise the properties of cometary dust in the sol…
The Distribution of Ultra-diffuse and Ultra-compact Galaxies in the Frontier Fields
Forbes, Duncan A.; Romanowsky, Aaron J.; Abraham, Roberto +2 more
Large low-surface-brightness galaxies have recently been found to be abundant in nearby galaxy clusters. In this paper, we investigate these ultra-diffuse galaxies (UDGs) in the six Hubble Frontier Fields galaxy clusters: A2744, MACS J0416.1-2403, MACS J0717.5+3745, MACS J1149.5+2223, AS1063, and A370. These are the most massive (1-3 × 1015