Results 121 to 130 of about 238,168 (251)

On the Star Formation Rates in Molecular Clouds

, 2010
In this paper we investigate the level of star formation activity within nearby molecular clouds. We employ a uniform set of infrared extinction maps to provide accurate assessments of cloud mass and structure and compare these with inventories of young ...
Alves, João F., Lada, Charles J., Lombardi, Marco   +2 more
core   +1 more source

From the warm magnetized atomic medium to molecular clouds

, 2008
{It has recently been proposed that giant molecular complexes form at the sites where streams of diffuse warm atomic gas collide at transonic velocities.} {We study the global statistics of molecular clouds formed by large scale colliding flows of warm ...
Audit, Ballesteros-Paredes, Crutcher, E. Audit, E. Vázquez-Semadeni, Fromang, Fryxell, Glover, Heitsch, Heitsch, Hennebelle, Hennebelle, Hennebelle, Koyama, Koyama, P. Hennebelle, R. Banerjee, R. S. Klessen, Teyssier, Troland, Vázquez-Semadeni, Vázquez-Semadeni, Williams   +22 more
core   +2 more sources

Reviewing Molecular Clouds

, 2017
The star formation process involves a wide range of spatial scales, densities and temperatures. Herschel observations of the cold and low density molecular gas extending tens of parsecs, that constitutes the bulk of the molecular clouds of the Milky Way, have shown a network of dense structures in the shape of filaments.
openaire   +2 more sources

ALMA CO Observations of Supernova Remnant N63A in the Large Magellanic Cloud: Discovery of Dense Molecular Clouds Embedded within Shock-Ionized and Photoionized Nebulae

, 2019
We carried out new $^{12}$CO($J$ = 1-0, 3-2) observations of a N63A supernova remnant (SNR) from the LMC using ALMA and ASTE. We find three giant molecular clouds toward the northeast, east, and near the center of the SNR.
Alsaberi, R. Z. E., Filipovic, M. D., Fujii, K., Fukui, Y., Inoue, T., Inutsuka, S., Kawamura, A., Matsumura, H., Maxted, N., Minamidani, T., Mizuno, N., Nagaya, T., Onishi, T., Rowell, G., Sano, H., Sasaki, M., Tachihara, K., Tokuda, K., Tsuge, K., Yamamoto, H., Yamane, Y., Yoshiike, S.   +21 more
core   +1 more source

Gas phase Elemental abundances in Molecular cloudS (GEMS) II. On the quest for the sulphur reservoir in molecular clouds: the H₂S case. [PDF]

Astron Astrophys, 2020
Navarro-Almaida D, Le Gal R, Fuente A, Rivière-Marichalar P, Wakelam V, Cazaux S, Caselli P, Laas JC, Alonso-Albi T, Loison JC, Gerin M, Kramer C, Roueff E, Bachiller R, Commerçon B, Friesen R, García-Burillo S, Goicoechea JR, Giuliano BM, Jiménez-Serra I, Kirk JM, Lattanzi V, Malinen J, Marcelino N, Martín-Domènech R, Muñoz Caro GM, Pineda J, Tercero B, Treviño-Morales SP, Roncero O, Hacar A, Tafalla M, Ward-Thompson D.   +32 more
europepmc   +1 more source

Chemistry in Dense Molecular Clouds: Theory and Observational Constraints [PDF]

, 1988
For the most part, gas phase models of the chemistry of dense molecular clouds predict the abundances of simple species rather well. However, for larger molecules and even for small systems rich in carbon these models often fail spectacularly.
Blake, Geoffrey A.
core  

Mapping the Dense Molecular Gas toward 13 Supernova Remnants

The Astrophysical Journal
Supernova remnants (SNRs) can exert strong influence on molecular clouds (MCs) through interaction by shock wave and cosmic rays. In this paper, we present our mapping observation of HCO ^+ and $\mathrm{HCN}$ 1–0 lines toward 13 SNRs interacting with MCs,
Tian-Yu Tu, Yang Chen, Qian-Cheng Liu
doaj   +1 more source

Cloud-cloud collision as drivers of the chemical complexity in Galactic Centre molecular clouds. [PDF]

Mon Not R Astron Soc, 2020
Zeng S, Zhang Q, Jiménez-Serra I, Tercero B, Lu X, Martín-Pintado J, de Vicente P, Rivilla VM, Li S.   +8 more
europepmc   +1 more source

Star Formation in Clouds of Molecular Hydrogen [PDF]

, 1975
V. C. Reddish
openalex   +1 more source

Larson's third law and the universality of molecular cloud structure

, 2010
Larson (1981) first noted a scaling relation between masses and sizes in molecular clouds that implies that these objects have approximately constant column densities.
Ballesteros-Paredes, Ballesteros-Paredes, Bohlin, C. J. Lada, Heyer, J. Alves, Jackson, Kainulainen, Kauffmann, Kegel, Kleinmann, Lada, Larson, Lilley, Lombardi, Lombardi, Lombardi, Lombardi, Lombardi, M. Lombardi, Rieke, Sanders, Savage, Solomon, Vazquez-Semadeni   +24 more
core   +1 more source