Search Publications
Missions
Journals
Publication Years
The Pristine survey - V. A bright star sample observed with SOPHIE
Salvadori, S.; Bonifacio, P.; Caffau, E. +16 more
With the aim of probing the properties of the bright end of the Pristine survey and its effectiveness in selecting metal-poor stars, we selected a sample of bright candidate metal-poor stars combining Pristine CaHK photometry with APASS gi photometry, before the Gaia second data release became available. These stars were observed with the SOPHIE s…
Survival of molecular gas in a stellar feedback-driven outflow witnessed with the MUSE TIMER project and ALMA
Leaman, Ryan; Falcón-Barroso, Jesus; Fragkoudi, Francesca +15 more
Stellar feedback plays a significant role in modulating star formation, redistributing metals, and shaping the baryonic and dark structure of galaxies - however, the efficiency of its energy deposition to the interstellar medium is challenging to constrain observationally. Here we leverage HST and ALMA imaging of a molecular gas and dust shell (M_…
Ultra metal-poor stars: improved atmospheric parameters and NLTE abundances of magnesium and calcium
Sitnova, T. M.; Mashonkina, L. I.; Frebel, A. +1 more
The most metal-poor stars are the oldest objects, they provide a unique opportunity to study the earliest epoch of the Galaxy formation and individual nucleosynthesis events. These stars should be investigated with a scrupulous care, taking into account all available photometric, spectroscopic, and astrometric informations. We determined atmospher…
HATS-54b-HATS-58Ab: Five New Transiting Hot Jupiters Including One with a Possible Temperate Companion
Henning, T.; Mancini, L.; Rabus, M. +18 more
We report the discovery by the HATSouth project of five new transiting hot Jupiters (HATS-54b through HATS-58Ab). HATS-54b, HATS-55b, and HATS-58Ab are prototypical short-period (P = 2.5-4.2 days, R p ∼ 1.1-1.2 {R}{{J}}) hot Jupiters that span effective temperatures from 1350 to 1750 K, putting them in the proposed region o…
VIRTIS-H observations of the dust coma of comet 67P/Churyumov-Gerasimenko: spectral properties and color temperature variability with phase and elevation
Kappel, D.; Erard, S.; Crovisier, J. +14 more
We analyze 2-5 µm spectroscopic observations of the dust coma of comet 67P/Churyumov-Gerasimenko obtained with the Visible InfraRed Thermal Imaging Spectrometer (VIRTIS-H) instrument on board Rosetta from 3 June to 29 October 2015 at heliocentric distances rh = 1.24-1.55 AU. The 2-2.5 µm color, bolometric albedo, and color t…
Neptune's carbon monoxide profile and phosphine upper limits from Herschel/SPIRE: Implications for interior structure and formation
Irwin, P. G. J.; Teanby, N. A.; Moses, J. I.
On Neptune, carbon monoxide and phosphine are disequilibrium species, and their abundance profiles can provide insights into interior processes and the external space environment. Here we use Herschel/SPIRE (Spectral and Photometric Imaging REceiver) observations from 14.9-51.5 cm-1 to obtain abundances from multiple CO and PH3
Asymmetric Drift in the Andromeda Galaxy (M31) as a Function of Stellar Age
Williams, Benjamin F.; Gilbert, Karoline M.; Chemin, Laurent +5 more
We analyze the kinematics of Andromeda’s disk as a function of stellar age by using photometry from the Panchromatic Hubble Andromeda Treasury survey and spectroscopy from the Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo survey. We use H I 21 cm and CO (J=1\to 0) data to examine the difference between the deprojected rotatio…
Shallow Ultraviolet Transits of WD 1145+017
Vanderburg, Andrew; Muirhead, Philip S.; Hallakoun, Na'ama +16 more
WD 1145+017 is a unique white dwarf system that has a heavily polluted atmosphere, an infrared excess from a dust disk, numerous broad absorption lines from circumstellar gas, and changing transit features, likely from fragments of an actively disintegrating asteroid. Here, we present results from a large photometric and spectroscopic campaign wit…
Physics and astrophysics of strong magnetic field systems with eXTP
Paul, Biswajit; Feng, Hua; Göğüş, Ersin +38 more
In this paper we present the science potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies of strongly magnetized objects. We will focus on the physics and astrophysics of strongly magnetized objects, namely magnetars, accreting X-ray pulsars, and rotation powered pulsars. We also discuss the science potential of eXTP f…
Global Distribution of the Solar Wind Flux and Velocity From SOHO/SWAN During SC-23 and SC-24
Schmidt, W.; Quémerais, E.; Koutroumpa, D. +1 more
We analyze SOHO (SOlar Heliospheric Observatory)/SWAN (Solar Wind ANisotropy) hydrogen Lyman-α data collected between 1996 and 2018 to derive the solar wind latitudinal distribution over time. Full-sky interplanetary Lyman-α maps are inverted to derive the total hydrogen ionization rate latitude profiles, normalized to proton charge-exchange and p…