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CLusters in the Uv as EngineS (CLUES). II. Subkiloparsec-scale Outflows Driven by Stellar Feedback
Hayes, Matthew; Chisholm, John; Östlin, Göran +17 more
We analyze the far-ultraviolet (1130‑1770 Å rest frame) spectroscopy of 20 young (<50 Myr) and massive (>104 M ⊙) star clusters (YSCs) in 11 nearby star-forming galaxies. We probe the interstellar gas intervening along the line of sight, detecting several metal absorption lines of a wide range of ionization potentials, …
Exploring the dependence of chemical traits on metallicity. Chemical trends for red giant stars with asteroseismic ages
Casamiquela, L.; Winther, M. L.; Blanco-Cuaresma, S. +5 more
Context. Given the massive spectroscopic surveys and the Gaia mission, the Milky Way has turned into a unique laboratory to be explored using abundance ratios that show a strong dependence on time. Within this framework, the data provided through asteroseismology serve as a valuable complement. Even so, it has been demonstrated that chemical trait…
Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1ES 2344+514
Covino, S.; Antonelli, L. A.; D'Elia, V. +238 more
Aims: The BL Lac 1ES 2344+514 is known for temporary extreme properties characterised by a shift of the synchrotron spectral energy distribution (SED) peak energy νsynch, p above 1 keV. While those extreme states have only been observed during high flux levels thus far, additional multi-year observing campaigns are required to achi…
Reconnaissance ultracool spectra in the Euclid Deep Fields
Martín, E. L.; Lodieu, N.; Zhang, J. -Y.
Context. The Euclid spacecraft has been launched and will carry out a deep survey benefiting the discovery and characterisation of ultracool dwarfs (UCDs), especially in the Euclid Deep Fields (EDFs), which the telescope will scan repeatedly throughout its mission. The photometric and spectroscopic standards in the EDFs are important benchmarks, c…
The phase-space distribution of the M 81 satellite system
Müller, Oliver; Heesters, Nick; Lelli, Federico +3 more
The spatial distribution of dwarf galaxies around their host galaxies is a critical test for the standard model of cosmology because it probes the dynamics of dark matter halos and is independent of the internal baryonic processes of galaxies. Comoving planes of satellites have been found around the Milky Way, the Andromeda galaxy, and the nearby …
Revealing H2O dissociation in WASP-76 b through combined high- and low-resolution transmission spectroscopy
Madhusudhan, Nikku; Gandhi, Siddharth; Brogi, Matteo +3 more
Numerous chemical constraints have been possible for exoplanetary atmospheres thanks to high-resolution spectroscopy (HRS) from ground-based facilities as well as low-resolution spectroscopy (LRS) from space. These two techniques have complementary strengths, and hence combined HRS and LRS analyses have the potential for more accurate abundance co…
The GRAVITY young stellar object survey. XIII. Tracing the time-variable asymmetric disk structure in the inner AU of the Herbig star HD 98922
Lutz, D.; Genzel, R.; Sturm, E. +52 more
Context. Temporal variability in the photometric and spectroscopic properties of protoplanetary disks is common in young stellar objects. However, evidence pointing toward changes in their morphology over short timescales has only been found for a few sources, mainly due to a lack of high-cadence observations at high angular resolution. Understand…
GOALS-JWST: The Warm Molecular Outflows of the Merging Starburst Galaxy NGC 3256
Inami, Hanae; Böker, Torsten; Togi, Aditya +26 more
We present James Webb Space Telescope (JWST) integral-field spectrograph observations of NGC 3256, a local infrared-luminous late-stage merging system with two nuclei roughly 1 kpc apart, both of which have evidence of cold molecular outflows. Using JWST/NIRSpec and Mid-Infrared Instrument data sets, we investigate this morphologically complex sys…
Joint ALMA/X-ray monitoring of the radio-quiet type 1 active galactic nucleus IC 4329A
Bauer, F. E.; Paltani, S.; Ho, L. C. +20 more
The origin of a compact millimeter (mm, 100–250 GHz) emission in radio-quiet active galactic nuclei (RQ AGN) remains debated. Recent studies propose a connection with self-absorbed synchrotron emission from the accretion disk X-ray corona. We present the first joint ALMA (∼100 GHz) and X-ray (NICER/XMM-Newton/Swift; 2–10 keV) observations of the u…
A Larger Sample Confirms Small Planets around Hot Stars Are Misaligned
Petigura, Erik A.; Winn, Joshua N.; Wang, Songhu +7 more
The distribution of stellar obliquities provides critical insight into the formation and evolution pathways of exoplanets. In the past decade, it was found that hot stars hosting hot Jupiters are more likely to have high obliquities than cool stars, but it is not clear whether this trend exists only for hot Jupiters or holds for other types of pla…