We present an auto-differentiable spectral modeling of exoplanets and brown dwarfs. This model enables a fully Bayesian inference the high--dispersion data to fit ab initio line-by-line computation observed spectrum by combining it with Hamiltonian Monte Carlo in recent probabilistic programming languages. An open source code, exojax, developed this study, was written Python using GPU/TPU compa...

The bright-rimmed cloud IC 1396N is believed to host one of the few known cases where two bipolar CO outflows driven by young stellar objects actually collide. are traced chains knots H_2 emission, with enhanced emission at position possible collision. aim this work use proper motions confirm collision scenario. A second epoch image was obtained, and were determined a time baseline ~11 years. W...

For a harmonic map $u : M^3 \to S^1$ on closed, oriented $3$-manifold, we establish the identity \[ 2 \pi \int_{\theta \in S^1} \chi (\Sigma _\theta) \geq \frac{1}{2} \int_{\Sigma_\theta} \left( {\lvert du \rvert}^{-2} \mathit{Hess} (u) \rvert}^2 + R_M \right) \] relating scalar curvature $R_M$ of $M$ to average Euler characteristic level sets $\Sigma_\theta = u^{-1} {\lbrace \theta \rbrace}$. ...

Non-ideal magnetohydrodynamic (MHD) effects are thought to be gravity's closest ally in overcoming the support of magnetic fields and forming stars. Here, we modify publicly available version adaptive mesh refinement code FLASH (Fryxell et al. 2000; Dubey 2008) include a detailed treatment non-ideal MHD study such collapsing prestellar cores. We implement two very extended non-equilibrium chemi...

Honeycomb layered tellurates represent a burgeoning class of multi-functional materials with fascinating crystal-structural versatility and rich composition space. Despite their multifold capabilities, compositional diversity remains underexplored due to complexities in experimental design syntheses. Thus, bid expand this frontier derive relevant insights into allowed metastable compositions, w...

Abstract Let $$\mathcal {H}^{*}=\{h_1,h_2,\ldots \}$$ H ∗ = { h 1 , 2 … } b...

We present the results of data analysis [CI] ($^{3}P_{1}$-$^{3}P_{0}$) emission from $\rho$ Ophiuchi A photon-dominated region (PDR) obtained in ALMA ACA stand-alone mode with a spatial resolution 2.''6 (360 au). The shows filamentary structures width $\sim$1000 au, which are adjacent to shell structure seen 4.5 $\mu$m map. found that emission, C$^0$, and CO distributed this order excitation st...

ABSTRACT Straight-chain (normal-propyl cyanide, $\rm {n-C_3H_7CN}$) and branched-chain (iso-propyl {i-C_3H_7CN}$) alkyl cyanides are recently identified in the massive star-forming regions (Sgr B2(N) Orion). These molecules indicate that key amino acids (side-chain structures) may also be present a similar region. The process by which this branching could propagate towards higher order (butyl {...

Fluorine is one of the most interesting elements for nuclear and stellar astrophysics. abundance was first measured stars other than Sun in 1992, then a handful metal-poor stars, which are likely to have formed early Universe. The main production sites fluorine under debate include asymptotic giant branch (AGB) $\nu$-process core-collapse supernovae, Wolf-Rayet (WR) stars. Due difference mass l...