Results 81 to 90 of about 2,644 (226)

The Local Group L-band Survey: Probing Cold Atomic Gas in IC 10 with Neutral Hydrogen Absorption

open access: yesThe Astrophysical Journal
We present the first localized detections of the cold neutral medium (CNM) in IC 10, offering a rare view of dense atomic gas in a low-metallicity ( Z / Z _⊙  ∼ 0.27) dwarf galaxy.
Ioana A. Stelea   +22 more
doaj   +1 more source

Cluster Models for Next‐Generation, Machine‐Learning‐Based Energy Functions for Molecular Simulations

open access: yesSmall Structures, Volume 7, Issue 2, February 2026.
This work describes how to conceive validated mixed machine learned/empirical energy functions based on finite‐sized molecular clusters for condensed phase simulations. Energy functions for pure and heterogeneous systems are one of the backbones for molecular simulation of condensed phase systems.
JingChun Wang   +10 more
wiley   +1 more source

INTERSTELLAR H$_{2}$ NARROW AND DIFFUSE LINE ABSORPTION

open access: yes, 1974
$^{1}$ J. A. Duardo, ``An Interpretation, of the Diffuse Interstellar Absorption Lines in Terms of Dipole Transitions of $H_{2}$'', Twenty-Sixth Symposium on Molecular Structure and Spectroscopy, The Ohio State University, June 1971.Author Institution ...
Duardo, J. A.
core  

κ Velorum: Another variable interstellar sightline? [PDF]

open access: yes, 2000
We present ultra-high-resolution (R = 900 000) observations of interstellar Na i and K i absorption lines towards κ Vel (HD 81188) which show clear evidence for temporal variation between 1994 and 2000. Specifically, the column densities of K0 and Na0 in
Stathakis, R.A.   +7 more
core   +1 more source

First Observation of CO2 Foreground Absorption toward the Galactic Center with JWST

open access: yesThe Astrophysical Journal
CO _2 is an important, stable, and abundant molecule in the Universe, but it is very difficult to detect because it has no observable pure rotational transitions. The unique sensitivity and resolution of the James Webb Space Telescope provide a fresh way
Jiawei Qiu   +13 more
doaj   +1 more source

Detection of CaI and CH absorption at the velocity of the variable interstellar component towards κ Velorum [PDF]

open access: yes, 2002
I report the detection of interstellar CaI and CH at the velocity of the previously reported variable absorption component towards κ Velorum (HD 81188).
Crawford, Ian
core   +1 more source

Low-frequency Absorption and Radio Recombination Line Features of the Galactic Center Lobe

open access: yesThe Astrophysical Journal
The Galactic center lobe (GCL) is a ∼1° object located north of the Galactic center. In the mid-infrared, the GCL appears as two 8.0 μ m filaments that roughly define an ellipse.
Natasha Hurley-Walker   +8 more
doaj   +1 more source

A 6 cm Formaldehyde Line Survey toward WISE Point Sources

open access: yesThe Astrophysical Journal Supplement Series
We conducted a 6 cm formaldehyde (H _2 CO) line survey across the northern sky, targeting 3149 high-mass star-forming region candidates selected from the all-sky Wide-field Infrared Survey Explorer (WISE) point-source catalog using the Shanghai TianMa 65
Jun-Ting Liu   +8 more
doaj   +1 more source

A study of extended red emission in reflection nebulae [PDF]

open access: yes, 1994
In the first part of this thesis spectroscopic observations of the Red Rectangle nebula are presented. A link is made between the most prominent unique emission line features, which are superimposed on the broad emission spectrum of the Red Rectangle ...
Watkin, Susan, Watkin, S
core  

Interstellar NaI and CaII absorption observed towards the Cygnus Loop SNR

open access: yes, 2002
We present high resolution spectra ($R \sim 5$ km s-1) of the interstellar NaI and CaII absorption lines observed towards 9 early-type stars with distances ranging from 250 to 2300 pc in the line-of-sight towards the Cygnus Loop Supernova Remnant (SNR).
S. Sallmen   +3 more
core   +1 more source

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