Search Publications
Source-dependent Properties of Two Slow Solar Wind States
Moncuquet, Michel; Issautier, Karine; Poirier, Nicolas +3 more
Two states of the slow solar wind are identified from in situ measurements by the Parker Solar Probe (PSP) inside 50 solar radii from the Sun. At such distances the wind measured by PSP has not yet undergone significant transformation related to the expansion and propagation of the wind. We focus in this study on the properties of the quiet solar …
Keck/OSIRIS Paβ High-contrast Imaging and Updated Constraints on PDS 70b
Dong, Ruobing; Uyama, Taichi; Beichman, Charles A. +11 more
We present a high-contrast imaging search for Paβ line emission from protoplanets in the PDS 70 system with Keck/OSIRIS integral field spectroscopy. We applied the high-resolution spectral differential imaging technique to the OSIRIS J-band data but did not detect the Paβ line at the level predicted using the parameters of Hashimoto et al. (2020).…
The AMBRE Project: Solar neighbourhood chemodynamical constraints on Galactic disc evolution
Recio-Blanco, A.; de Laverny, P.; Kordopatis, G. +2 more
Context. The abundance of α-elements relative to iron ([α/Fe]) is an important fossil signature in Galactic archaeology for tracing the chemical evolution of disc stellar populations. High-precision chemical abundances, together with accurate stellar ages, distances, and dynamical data, are crucial to infer the Milky Way formation history.
Ai…
Accretion torque reversals in GRO J1008-57 revealed by Insight-HXMT
Wang, W.; Huang, Y.; Wang, C. +92 more
GRO J1008-57, as a Be/X-ray transient pulsar, is considered to have the highest magnetic field in known neutron star X-ray binary systems. Observational data of the X-ray outbursts in GRO J1008-57 from 2017 to 2020 were collected by the Insight-HXMT satellite. In this work, the spin period of the neutron star in GRO J1008-57 was determined to be a…
Molecular gas kinematics in the nuclear region of nearby Seyfert galaxies with ALMA
Andreani, P.; Hatziminaoglou, E.; Spinoglio, L. +11 more
Context. The study of the distribution, morphology, and kinematics of cold molecular gas in the nuclear and circumnuclear regions of active galactic nuclei (AGNs) helps to characterise and hence to quantify the impact of the AGNs on the host galaxy over its lifetime.
Aims: We present the analysis of the molecular gas in the nuclear regions of…
Vertical Structure and Color of Jovian Latitudinal Cloud Bands during the Juno Era
Baines, Kevin H.; Irwin, Patrick G. J.; Dahl, Emma K. +6 more
The identity of the coloring agent(s) in Jupiter's atmosphere and the exact structure of Jupiter's uppermost cloud deck are yet to be conclusively understood. The Crème Brûlée model of Jupiter's tropospheric clouds, originally proposed by Baines et al. and expanded upon by Sromovsky et al. and Baines et al., presumes that the chromophore measured …
Fragmentation in the massive G31.41+0.31 protocluster
Maud, L. T.; Csengeri, T.; Beuther, H. +18 more
Context. ALMA observations at 1.4 mm and ~0."2 (~750 au) angular resolution of the Main core in the high-mass star-forming region G31.41+0.31 have revealed a puzzling scenario. On the one hand, the continuum emission looks very homogeneous and the core appears to undergo solid-body rotation, suggesting a monolithic core stabilized by the magnetic …
ORion Alma New GEneration Survey (ORANGES). I. Dust continuum and free-free emission of OMC-2/3 filament protostars
Ceccarelli, C.; Yang, Y. -L.; López-Sepulcre, A. +3 more
Context. The spectral energy distribution (SED) in the millimetre to centimetre range is an extremely useful tool for characterising the dust in protostellar envelopes as well as free-free emission from the protostar and outflow. Actually, the evolutionary status of solar-type protostars is often based on their SED in the near-infrared to millimet…
Cross-comparison of global simulation models applied to Mercury's dayside magnetosphere
André, N.; Budnik, E.; Génot, V. +14 more
We present the first comparison of multiple global simulations of the solar wind interaction with Mercury's dayside magnetosphere, conducted in the framework of the international collaborative project SHOTS - Studies on Hermean magnetosphere Oriented Theories and Simulations. Two 3D magnetohydrodynamic and two 3D hybrid simulation codes are used t…
Probing Intra-Halo Light with Galaxy Stacking in CIBER Images
Cooray, Asantha; Matsuura, Shuji; Zemcov, Michael +13 more
We study the stellar halos of 0.2 ≲ z ≲ 0.5 galaxies with stellar masses spanning M* ~ 1010.5 to 1012M⊙ (approximately L* galaxies at this redshift) using imaging data from the Cosmic Infrared Background Experiment (CIBER). A previous CIBER fluctuation analysis suggested that intra-halo light …