Results 1 to 10 of about 1,511 (180)

Evidence of the Amino Acids Tyrosine and Phenylalanine in the Interstellar Material of IC348 in Perseus [PDF]

open access: yesLife
We employed data from the Spitzer Space Telescope to investigate the presence of the aromatic amino acids tyrosine and phenylalanine in the interstellar gas of the young star cluster IC 348.
Susana Iglesias-Groth   +3 more
doaj   +2 more sources

Gamma-ray line emission from superbubbles in the interstellar medium: The cygnus region

open access: yesAIP Conference Proceedings, 2001
5 pages, 3 figures, to appear in Proc. of Gamma-Ray Astrophysics 2001, to be published in AIP Conf.
Dieter Hartmann   +2 more
exaly   +3 more sources

Carbon and oxygen X-ray line emission from the interstellar medium

open access: yesAstrophysical Journal, 1982
A soft X-ray, 0.3-1.0 keV spectrum from a 1 sr region which includes a portion of the North Polar Spur, obtained by three rocketborne lithium-drifted silicon detectors, shows the C V, C VI, O VII and O VIII emission lines. The spectrum is well fitted by a two-component, modified Kato (1976) model, where the coronal emission is in collisional ...
R Rothenflug, R Rocchia
exaly   +2 more sources

Dust Emission in Galaxies at Millimeter Wavelengths: Cooling of star forming regions in NGC6946 [PDF]

open access: yesEPJ Web of Conferences, 2022
Interstellar dust plays an important role in the formation of molecular gas and the heating and cooling of the interstellar medium. The spatial distribution of the mm-wavelength dust emission from galaxies is largely unexplored. The NIKA2 Guaranteed Time
Ejlali G.   +56 more
doaj   +1 more source

Understanding Interstellar Metals during Reionization with Radiative Simulation: Metallicity and Emission Lines from the Interstellar Medium at 10 ≥ z ≥ 5

open access: yesThe Astrophysical Journal
We compare the Technicolor Dawn cosmological simulations with recent observations of galactic nebular line emission during the Epoch of Reionization, providing stringent tests of the predicted ionization and metal enrichment levels.
Samir Kušmić   +3 more
doaj   +2 more sources

A Complete HCN Survey of the Perseus Molecular Cloud

open access: yesThe Astrophysical Journal, 2023
We present a survey of the Perseus molecular cloud in the J = 1 → 0 transition of HCN, a widely used tracer of dense molecular gas. The survey was conducted with the CfA 1.2 m telescope, which at 89 GHz has a beamwidth of 11′ and a spectral resolution of
T. M. Dame, Charles J. Lada
doaj   +1 more source

New and Improved Lyα Reconstructions for M and K Dwarfs

open access: yesThe Astrophysical Journal, 2023
The Ly α emission line is the brightest UV emission line in M and K dwarf spectra and serves as an important tool for studies of stellar chromospheres, the interstellar medium, and exoplanet atmospheres.
Angeli Sandoval   +3 more
doaj   +1 more source

Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies

open access: yesFrontiers in Astronomy and Space Sciences, 2022
We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska   +2 more
doaj   +1 more source

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