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Scaling relations of z ∼ 0.25-1.5 galaxies in various environments from the morpho-kinematics analysis of the MAGIC sample
Bouché, N.; Brinchmann, J.; Krajnović, D. +10 more
Context. The evolution of galaxies is influenced by many physical processes, which may vary depending on their environment.
Aims: We combine Hubble Space Telescope (HST) and Multi-Unit Spectroscopic Explorer (MUSE) data of galaxies at 0.25 ≲ z ≲ 1.5 to probe the impact of environment on the size-mass relation, the main sequence (MS) relation,…
Observationally Constraining the Starspot Properties of Magnetically Active M67 Sub-subgiant S1063
Tofflemire, Benjamin M.; Gully-Santiago, Michael A.; Gosnell, Natalie M. +1 more
Our understanding of the impact of magnetic activity on stellar evolution continues to unfold. This impact is seen in sub-subgiant stars, defined to be stars that sit below the subgiant branch and red of the main sequence in a cluster color-magnitude diagram. Here we focus on S1063, a prototypical sub-subgiant in open cluster M67. We use a novel t…
A new method to detect globular clusters with the S-PLUS survey
Cortesi, Arianna; Chies-Santos, Ana L.; Forbes, Duncan A. +17 more
In this paper, we describe a new method to select globular cluster (GC) candidates, including galaxy subtraction with unsharp masking, template fitting techniques, and the inclusion of Gaia's proper motions. We report the use of the 12-band photometric system used by S-PLUS to determine radial velocities and stellar populations of GCs around nearb…
Improving White Dwarfs as Chronometers with Gaia Parallaxes and Spectroscopic Metallicities
Fouesneau, Morgan; El-Badry, Kareem; Bailer-Jones, Coryn A. L. +9 more
White dwarfs (WDs) offer unrealized potential in solving two problems in astrophysics: stellar age accuracy and precision. WD cooling ages can be inferred from surface temperatures and radii, which can be constrained with precision by high-quality photometry and parallaxes. Accurate and precise Gaia parallaxes along with photometric surveys provid…
Parameters of the Radcliffe Wave from Masers, Radio Stars, and T Tauri Stars
Bobylev, V. V.; Bajkova, A. T.; Mishurov, Yu. N.
The Radcliffe wave is shown to be present in both positions and vertical velocities of masers and radio stars belonging to the Local Arm. At the same time, it appears that the Radcliffe structure is not a wave in the true sense of the word. It more closely resembles a local high-amplitude spike that rapidly tails off. This structure has the larges…
On the use of field RR Lyrae as galactic probes - VI. Mixed mode RR Lyrae variables in Fornax and in nearby dwarf galaxies
Di Criscienzo, M.; Marinoni, S.; Marrese, P. M. +11 more
We investigate the properties of the mixed-mode (RRd) RR Lyrae (RRL) variables in the Fornax dwarf spheroidal (dSph) galaxy by using B- and V-band time series collected over 24 yr. We compare the properties of the RRds in Fornax with those in the Magellanic Clouds and in nearby dSphs, with special focus on Sculptor. We found that the ratio of RRds…
Vertical distribution of dust in the Martian atmosphere: OMEGA/MEx limb observations
Aoki, Shohei; Bellucci, Giancarlo; Altieri, Francesca +8 more
The OMEGA spectrometer on board Mars Express acquired several observations of the Martian limb that are still largely unexploited. Here, we explore the information content of these data in terms of abundance and size of the Martian atmospheric dust. We approach the dust retrievals by applying a full spherical multiple scattering Monte Carlo 1D rad…
Spectral-timing of AGN ionized outflows with Athena
Costantini, E.; Uttley, P.; Juráňová, A.
Spectral-timing techniques have proven valuable in studying the interplay between the X-ray corona and the accretion disc in variable active galactic nuclei (AGNs). Under certain conditions, photoionized outflows emerging from central AGN regions also play a role in the observable spectral-timing properties of the nuclear components. The variable …
Helium line emissivities for nebular astrophysics
Del Zanna, G.; Storey, P. J.
We present the results of several collisional-radiative models describing optically thin emissivities of the main lines in neutral helium formed by recombination, for a grid of electron temperatures and densities, typical of H II regions and planetary nebulae. Accurate emissivities are required for example to measure the helium abundance in nebula…
Compton-thick AGN in the NuSTAR Era. IX. A Joint NuSTAR and XMM-Newton Analysis of Four Local AGN
Cusumano, G.; Ajello, M.; La Parola, V. +7 more
We present the results of the broadband X-ray spectral analysis of simultaneous NuSTAR and XMM-Newton observations of four nearby Compton-thick active galactic nuclei (AGN) candidates selected from the Swift Burst Alert Telescope 150 month catalog. This work is part of a larger effort to identify and characterize all Compton-thick (N H …