Molecular Gas Structures Traced by ¹³CO Emission in the 18,190 ¹²CO Molecular Clouds from the MWISP Survey

Polarized CO emission from molecular clouds

Linearly polarized, non-masing, rotational lines have been detected for the first time in the interstellar medium. This effect occurs in molecular clouds with a magnetic field, and traces the field direction, offering an alternative technique to dust emission polarimetry. The line polarization mechanism is similar to that in masers, but with lower degrees of polarization (∼ 1 %). We have detect...

The Excitation of Molecular Clouds and the Emission from Molecular Hydrogen

The observation and theory of UV{excitation of molecular clouds (i.e., photodissociation regions) and the shock-excitation of molecular clouds is reviewed, with particular emphasis placed on the emission from molecular hydrogen. Recent advances in near{IR instrumentation have engendered new observations which are challenging our theoretical understanding of these fundamental physical processes....

the role of task-based techniques on the acquisition of english language structures by the intermediate efl students

this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...

Atomic Carbon Emission from Individual Molecular Clouds in M33

We present observations of the 492 GHz [CI] emission for four individual giant molecular clouds in the Local Group galaxy M33 obtained with the James Clerk Maxwell Telescope. The average [CI] to CO J=1-0 integrated intensity ratio of 0.10± 0.03 is similar to what is observed in Galactic molecular clouds but smaller than what is seen in starburst galaxies. Similarly, the column density ratio N(C...

Molecular Hydrogen Excitation in Gas Clouds