Tootfinder

A comprehensive light curve model of the very fast nova V1674 Herculis
Mariko Kato, Izumi Hachisu, Hideyuki Saio
https://arxiv.org/abs/2506.04615 https://

A comprehensive light curve model of the very fast nova V1674 Herculis
V1674 Her is one of the fastest novae, of which the very early phase is well observed including optical rise to the peak over 10 magnitudes. We present a full theoretical light curve model of V1674 Her. Our $1.35~M_\odot$ white dwarf (WD) model with the mass accretion rate of $1\times 10^{-11}~M_\odot$ yr$^{-1}$ explains overall properties including a very fast rise and decay of the optical $V$ light curve. The WD photosphere expands up to $21 ~R_\odot$, thus, a $0.26 ~M_\odot$ companion star o…

Multiple telescopes produce new view of Andromeda #space

You've never seen the Andromeda Galaxy like this before. Multiple telescopes produce new view of our spiral neighbour | BBC Sky at Night Magazine
Image of the Andromeda Galaxy in multiple wavelengths, produced by multiple space telescopes and ground-based observatories.

The vertical structure of the stellar disk in NGC 551
Harshal Raut, Narendra Nath Patra, Prerana Biswas, Nirupam Roy, Veselina Kalinova, Sergio Dzib, Dario Colombo, Vicente Villanueva, Sebasti\'an F. S\'anchez
https://arxiv.org/abs/2506.19551

The vertical structure of the stellar disk in NGC 551
We self-consistently determine the 3D density distribution of NGC 551's stellar disk and study observational signatures of two-component stellar disks. Assuming baryonic disks are in hydrostatic equilibrium, we solved the Poisson-Boltzmann equation to estimate 3D density distribution. We used integral-field spectroscopic observations to estimate stellar velocity dispersion and built a 3D dynamical model using these density solutions and the observed rotation curve. We generated simulated surfac…

Ma monture Skywatcher neq6. Ça faisait des mois qu'elle faisait tactactac, inutilisable. Ce matin avec mon voisin on a bricolé dedans (enfin surtout lui, j'y connais rien).
Depuis elle tourne comme une horloge. Ça sert aussi Š ça, les rencontres astronomiques, Š retrouver les copains, et les coups de mains!
Mise en station Š l'arrache, au pif, résultat, le soleil est toujours centré après plusieurs heures de suivi.