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Open problems and perspectives offered by current and future instruments
EPJ Web of Conferences, 2012 We summarize recent observational and theoretical results and discuss the open challenges for astrochemistry and the promises offered by the current and upcoming instruments. Some of the main challenges are listed below. Characterization of the structure
Gérin M.
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Regarding the Detection of Interstellar C4 and C5 Molecules
The Astrophysical JournalAnalysis of very high signal-to-noise ratio (S/N) spectra of reddened stars allowed us to determine an upper limit (UL) of the column density N (C _4 ).
G. A. Galazutdinov +2 more
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Spectroscopic Confirmation of a Population of Isolated, Intermediate-mass Young Stellar Objects
The Astronomical Journal, 2022 Wide-field searches for young stellar objects (YSOs) can place useful constraints on the prevalence of clustered versus distributed star formation. The Spitzer/IRAC Candidate YSO (SPICY) catalog is one of the largest compilations of such objects (∼120 ...
Michael A. Kuhn +11 more
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Data-driven Discovery of Diffuse Interstellar Bands with APOGEE Spectra
The Astrophysical JournalData-driven models of stellar spectra are useful tools to study nonstellar information, such as the diffuse interstellar bands (DIBs) caused by intervening interstellar material.
Kevin A. McKinnon +3 more
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Strength Ratios of Diffuse Interstellar Bands in Slightly Reddened Objects
UniverseThe disk of the Milky Way fills the interstellar medium in the form of discrete clouds, many (∼30) light-years across. The average density of this medium is 1 hydrogen atom per cm3 (Oort limit), in the clouds—several dozen atoms, and between the clouds ...
Jacek Krełowski, Arkadii Bondar
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The Astrophysical JournalInfrared spectra of hydrocarbon dust absorption bands toward the bright hypergiant Cygnus OB2-12 are compared to published spectra of the Quintuplet Cluster, a sightline to the Galactic center. The Cyg OB2-12 data include a new ground-based 2.86−3.70 μ m
Yvonne J. Pendleton +16 more
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Electronic Spectroscopy of C60+ and Its Analogs C60H2O+, C60H+, C60D+, and C60Mg+
The Astrophysical JournalThe fullerenes C _60 and C _70 have been detected in various interstellar environments, and the cation ${{{\rm{C}}}_{60}}^{+}$ has been identified as a carrier of at least four of the diffuse interstellar bands (DIBs). Based on the presence of fullerenes
Lisa Ganner +6 more
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Optical Spectroscopy of a post-AGB star HD 187885
Open Astronomy, 2013 The physical parameters of the atmosphere and its chemical composition for a post-AGB star HD 187885 are determined from high resolution spectra. The effective temperature Teff = 8000 ± 200 K and the surface gravity log g = 1.0 ± 0.3 were derived.
Kipper Tõnu
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The Astrophysical JournalUnderstanding variations in the dust extinction curve is imperative for using dust as a tracer of local structure in the interstellar medium, understanding dust chemistry, and performing extinction corrections.
Andrew K. Saydjari, Gregory M. Green
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Data-driven modeling of Galactic diffuse emission with multi-wavelength observations
European Physical Journal C: Particles and FieldsWe present a data-driven investigation of Galactic diffuse emission. Using multi-frequency Planck maps (30–857 GHz), we construct a non-linear mapping between microwave-to-far-infrared and gamma-ray intensity through supervised machine learning.
Xi Liu +6 more
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