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Related papers: LIDA - The Leiden Ice Database for Astrochemistry

200 papers

In a collaboration of the German Astrophysical Virtual Observatory (GAVO) and AstroGrid-D, the German Astronomy Community Grid (GACG), we provide a VO service for the access and the calculation of stellar synthetic energy distributions…

Solar and Stellar Astrophysics · Physics 2009-01-28 Thomas Rauch , Iliya Nickelt , Ulrike Stampa , Markus Demleitner , Lars Koesterke

We present an empirical infrared spectral library of medium resolution (R~2000-3000) H (1.6 micron) and K (2.2 micron) band spectra of 218 red stars, spanning a range of [Fe/H] from ~-2.2 to ~+0.3. The sample includes Galactic disk stars,…

Context. The surface structures and dynamics of cool stars are characterized by the presence of convective motions and turbulent flows which shape the emergent spectrum. Aims. We used realistic three-dimensional radiative hydrodynamical…

Solar and Stellar Astrophysics · Physics 2018-03-14 A. Chiavassa , L. Casagrande , R. Collet , Z. Magic , L. Bigot , F. Thevenin , M. Asplund

I present version 5.0 of FRELLED, the FITS Realtime Explorer of Low Latency in Every Dimension. This is a 3D data visualisation package for the popular Blender art software, designed to allow inspection of astronomical volumetric data sets…

Instrumentation and Methods for Astrophysics · Physics 2025-01-07 Rhys Taylor

We present an overview of SPICA, the Space Infrared Telescope for Cosmology and Astrophysics, a world-class space observatory optimized for mid- and far-IR astronomy (from 5 to ~210um) with a cryogenically cooled ~3.2m telescope (<6 K). Its…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Javier R. Goicoechea , Takao Nakagawa

In dense and cold regions of the interstellar medium (ISM), molecules may be adsorbed onto dust grains to form the ice mantles. Once formed, they can be processed by ionizing radiation coming from stellar or interstellar medium leading to…

Instrumentation and Methods for Astrophysics · Physics 2016-09-16 W. R. M. Rocha , S. Pilling , A. L. F. de Barros , D. P. P. Andrade , H. Rothard , P. Boduch

The possibility of using Infrared Lock-In Thermography (LIT) to estimate the thickness of a sample was assessed and shown to be accurate up to 1.8mm. LIT is a technique involving heating samples with halogen lamps with varying intensity…

Applied Physics · Physics 2018-10-15 Ming Hin Wong , Kok Hin Henry Goh

The technique of line depth ratios (LDR) is one of the methods to determine the effective temperature of a star. They are crucial in the spectroscopic studies of variable stars like Cepheids since no simultaneous photometry is usually…

Solar and Stellar Astrophysics · Physics 2023-07-12 V. Kovtyukh , B. Lemasle , N. Nardetto , G. Bono , R. da Silva , N. Matsunaga , A. Yushchenko , K. Fukue , E. K. Grebel

The space gravitational wave detector LISA is expected to detect $\sim10^4$ of nearly monochromatic binaries, after $\sim 10$\.yr operation. We propose to measure the inspiral/outspiral binary fluxes in the frequency space, by processing…

High Energy Astrophysical Phenomena · Physics 2022-02-09 Naoki Seto

The Testbed for LISA Analysis (TLA) Project aims to facilitate the development, validation and comparison of different methods for LISA science data analysis, by the broad LISA Science Community, to meet the special challenges that LISA…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Lee Samuel Finn , Matthew J. Benacquista , Shane L. Larson , Louis J. Rubbo

We present the Spitzer/IRS Mapping Legacy Archive (SIMLA); a complete set of mid-infrared spectral cubes built from low-resolution mapping-mode fixed-target observations from Spitzer/IRS (5.2-38 micron, R~60-130). Contained in this dataset…

The derivation of the effective temperature of a star is a critical first step in a detailed spectroscopic analysis. Spectroscopic methods suffer from systematic errors related to model simplifications. Photometric methods may be more…

Solar and Stellar Astrophysics · Physics 2015-06-15 Julián Muñoz Bermejo , Andrés Asensio Ramos , Carlos Allende Prieto

LISA is a proposed space-based laser interferometer detecting gravitational waves by measuring distances between free-floating test masses housed in three satellites in a triangular constellation with laser links in-between. Each satellite…

SpectroWeb is an online maintained interactive graphical database of digital spectral atlases of spectral standard stars at http://spectra.freeshell.org . It is an efficient and user-friendly research tool for accurate analyses of stellar…

Astrophysics · Physics 2007-07-26 A. Lobel

The presence or absence of ice in protoplanetary disks is of great importance for the formation of planets. By enhancing the solid surface density and increasing the sticking efficiency, ice catalyzes the rapid formation of planetesimals…

The inference of the underlying state of the plasma in the solar chromosphere remains extremely challenging because of the nonlocal character of the observed radiation and plasma conditions in this layer. Inversion methods allow us to…

Solar and Stellar Astrophysics · Physics 2019-03-06 J. de la Cruz Rodríguez , J. Leenaarts , S. Danilovic , H. Uitenbroek

The light emitted from the stellar photosphere serves as a unique signature for the nature of stars. The behaviour of these stellar lines depend upon the surface temperature, mass, evolutionary status and chemical composition of the star.…

Solar and Stellar Astrophysics · Physics 2016-10-25 Priyanka Chaturvedi , Abhijit Chakraborty , B. G. Anandarao

The interplay between radiation chemistry and sublimation dynamics of condensed organic compounds on cold grains is fundamental to describe observed gas-phase and ice-phase molecular abundances in the ISM. Infrared measurements are…

Ice mantles play a crucial role in shaping the astrochemical inventory of molecules during star and planet formation. Small-scale molecular processes have a profound impact on large-scale astronomical evolution. The areas of solid-state…

Astrophysics of Galaxies · Physics 2024-07-10 Herma M. Cuppen , Harold. Linnartz , Sergio Ioppolo

We propose a new model for treating solid-phase photoprocesses in interstellar ice analogues. In this approach, photoionization and photoexcitation are included in more detail, and the production of electronically-excited (suprathermal)…