Results 11 to 20 of about 238,168 (251)
Primordial molecular clouds [PDF]
Conference on 3K cosmology, 1999 It is now well known that a primordial chemistry, involving light elements produced during the nucleosynthesis period, might develop during the hydrogen post-recombination era. In particular, molecular ions and primordial molecules such as H2, HD and LiH
Puy, D., Signore, M.
core +7 more sources
Supernovae in Molecular Clouds [PDF]
AIP Conference Proceedings, 2001 Supernovae are expected to occur near the molecular material in which the massive progenitor star was born, except in cases where the photoionizing radiation and winds from the progenitor star and its neighbors have cleared out a region.
Chevalier, Roger A.
core +6 more sources
High Altitude Molecular Clouds [PDF]
The Astrophysical Journal, 1994 A population of molecular clouds with a significantly greater scale height than that of Giant Molecular Clouds has been identified by examining maps of the latitude distribution of the $^{12}CO(1-0)$ emission in the first quadrant of the Galaxy. These clouds are found by identifying emission more than 2.6 times the scale-height away from the galactic ...
arxiv +5 more sources
The Astrophysical JournalDeep interferometric observations of CO and dust continuum emission are obtained with the Submillimeter Array at 230 GHz to investigate the physical nature of the giant molecular cloud (GMC) population in the Andromeda galaxy (M31).
Charles J. Lada +3 more
doaj +3 more sources
Molecular clouds in the Galaxy [PDF]
The Astrophysical Journal, 1975 The J = 1 → 0 emission of CO has been surveyed in the galactic plane between ℓ = -10° and +90° with a U beam sampling every degree. Molecular clouds emitting in the CO line are plentiful over the inner region of the Galaxy. Their greatest number occurs in the galactic nucleus and at a radius of 5.5 kpc—a distribution similar to radio H II regions and ...
N. Z. Scoville, P. M. Solomon
openalex +6 more sources
The Molecular Cloud Lifecycle [PDF]
Space Science Reviews, 2020 AbstractGiant molecular clouds (GMCs) and their stellar offspring are the building blocks of galaxies. The physical characteristics of GMCs and their evolution are tightly connected to galaxy evolution. The macroscopic properties of the interstellar medium propagate into the properties of GMCs condensing out of it, with correlations between e.g.
Angela Adamo +9 more
openaire +4 more sources
THE CALIFORNIA MOLECULAR CLOUD [PDF]
The Astrophysical Journal, 2009 Accepted for publication in the ApJ. This submission has low resolution figures. Preprint with full resolution figures can be found at http://www.cfa.harvard.edu/~clada/pubs_html/California ...
C. J. Lada, M. Lombardi, J. F. Alves
openaire +3 more sources
Turbulence in Molecular Clouds [PDF]
The Astrophysical Journal, 1995 accepted in ApJ, compressed postscript, figures not included. Complete preprint available at http://ucowww.ucsc.edu/~dubinski/home.html or by request to dubinski@lick.ucsc ...
John Dubinski +2 more
openaire +4 more sources
CO TO H2 RATIO OF INTERSTELLAR MOLECULAR CLOUDS IN THE DIRECTIONS OF EARLY TYPE STARS [PDF]
Journal of Astronomy and Space Sciences, 2004 We present measurements of interstellar CO absorption lines in the spectra of 7 early-type stars that were observed with the FUSE(Far Ultraviolet Spectroscopic Explorer).
Jae-Woo Park +2 more
doaj +1 more source
The formation of molecular clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 In a recent paper, Elmegreen (2000) has made a cogent case, from an observational point of view, that the lifetimes of molecular clouds are comparable to their dynamical timescales. If so, this has important implications for the mechanisms by which molecular clouds form.
S. H. Lubow +4 more
openaire +4 more sources