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Space-Based Photometry of Binary Stars: From Voyager to TESS
Southworth, John
Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968. This review traces the binary stars observed and the scientific results obtained from the early days of ultraviolet missions (OAO-2, Voyager, ANS, IUE), through a …
ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT). V. Sample, overview, and demography of disk molecular emission
Podio, L.; Bacciotti, F.; Fedele, D. +9 more
We present an overview of the ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT), a campaign devoted to the characterization of the molecular emission from partly embedded young stars. The project is aimed at attaining a better understanding of the gaseous products delivered to planets by means of high-resolution maps of the assorte…
From Starspots to Stellar Coronal Mass Ejections—Revisiting Empirical Stellar Relations
Papaioannou, Athanasios; Herbst, Konstantin; Airapetian, Vladimir S. +1 more
Upcoming missions, including the James Webb Space Telescope, will soon characterize the atmospheres of terrestrial-type exoplanets in habitable zones around cool K- and M-type stars by searching for atmospheric biosignatures. Recent observations suggest that the ionizing radiation and particle environment from active cool planet hosts may be detri…
MOVES - IV. Modelling the influence of stellar XUV-flux, cosmic rays, and stellar energetic particles on the atmospheric composition of the hot Jupiter HD 189733b
Vidotto, A. A.; Bourrier, V.; Fares, R. +7 more
Hot Jupiters provide valuable natural laboratories for studying potential contributions of high-energy radiation to pre-biotic synthesis in the atmospheres of exoplanets. In this fourth paper of the Multiwavelength Observations of an eVaporating Exoplanet and its Star (MOVES) programme, we study the effect of different types of high-energy radiati…
A Transiting Warm Giant Planet around the Young Active Star TOI-201
Trifonov, Trifon; Henning, Thomas; Latham, David W. +46 more
We present the confirmation of the eccentric warm giant planet TOI-201 b, first identified as a candidate in Transiting Exoplanet Survey Satellite photometry (Sectors 1-8, 10-13, and 27-28) and confirmed using ground-based photometry from Next Generation Transit Survey and radial velocities from FEROS, HARPS, CORALIE, and MINERVA-Australis. TOI-20…
A sublimated water atmosphere on Ganymede detected from Hubble Space Telescope observations
Saur, Joachim; Roth, Lorenz; Grodent, Denis +5 more
Ganymede's atmosphere is produced by charged particle sputtering and sublimation of its icy surface. Previous far-ultraviolet observations of the O I 1,356 å and O I 1,304 å oxygen emissions were used to infer sputtered molecular oxygen (O2) as an atmospheric constituent, but an expected sublimated water (H2O) component remai…
Dense molecular gas properties on 100 pc scales across the disc of NGC 3627
Chevance, M.; Meidt, S. E.; Schinnerer, E. +29 more
It is still poorly constrained how the densest phase of the interstellar medium varies across galactic environment. A large observing time is required to recover significant emission from dense molecular gas at high spatial resolution, and to cover a large dynamic range of extragalactic disc environments. We present new NOrthern Extended Millimete…
SUPER. IV. CO(J = 3-2) properties of active galactic nucleus hosts at cosmic noon revealed by ALMA
Salvato, M.; Zanella, A.; Saintonge, A. +23 more
Feedback from active galactic nuclei (AGN) is thought to be key in shaping the life cycle of their host galaxies by regulating star-formation activity. Therefore, to understand the impact of AGN on star formation, it is essential to trace the molecular gas out of which stars form. In this paper we present the first systematic study of the CO prope…
An Isolated White Dwarf with a 70 s Spin Period
Bergeron, P.; Kilic, Mukremin; Moss, Adam G. +2 more
We report the discovery of an isolated white dwarf with a spin period of 70 s. We obtained high-speed photometry of three ultramassive white dwarfs within 100 pc and discovered significant variability in one. SDSS J221141.80+113604.4 is a 1.27 M ⊙ (assuming a CO core) magnetic white dwarf that shows 2.9% brightness variations in the BG4…
Three-dimensional Distribution of the Interstellar Dust in the Milky Way
Huang, Y.; Chen, B. -Q.; Yuan, H. -B. +6 more
We present a three-dimensional (3D) extinction map of the southern sky. The map covers the SkyMapper Southern Survey (SMSS) area of ∼14,000 deg2 and has spatial resolutions between 6'9 and 27'. Based on the multi-band photometry of SMSS, the Two Micron All Sky Survey, the Wide-Field Infrared Survey Explorer Survey, and the Gaia mission,…