Small Interstellar Molecules and What They Tell Us
Ζωντανή ροή πριν από 11 ώρες
Host: Gary Melnick
Speaker: David Neufeld (Johns Hopkins University)
Observations
at far- and mid-infrared wavelengths provide a wealth of information
about the molecular inventory of interstellar gas clouds. Because of the
different chemical pathways responsible for their formation and
destruction, different molecules probe specific aspects of the
interstellar environment. Carefully interpreted, they provide unique
information about the molecular fraction, the UV radiation field, the
dissipation of energy within the turbulent ISM, and the cosmic-ray
density in the Galaxy. This talk will include a general overview of
astrochemical probes of the interstellar medium, along with new
estimates of a key parameter in astrochemical models: the cosmic-ray
ionization rate.
Observations at far- and mid-infrared
wavelengths provide a wealth of information about the molecular
inventory of interstellar gas clouds. Because of the different chemical
pathways responsible for their formation and destruction, different
molecules probe specific aspects of the interstellar environment.
Carefully interpreted, they provide unique information about the
molecular fraction, the UV radiation field, the dissipation of energy
within the turbulent ISM, and the cosmic-ray density in the Galaxy. This
talk will include a general overview of astrochemical probes of the
interstellar medium, along with new estimates of a key parameter in
astrochemical models: the cosmic-ray ionization rate.
Observations
at far- and mid-infrared wavelengths provide a wealth of information
about the molecular inventory of interstellar gas clouds. Because of the
different chemical pathways responsible for their formation and
destruction, different molecules probe specific aspects of the
interstellar environment. Carefully interpreted, they provide unique
information about the molecular fraction, the UV radiation field, the
dissipation of energy within the turbulent ISM, and the cosmic-ray
density in the Galaxy. This talk will include a general overview of
astrochemical probes of the interstellar medium, along with new
estimates of a key parameter in astrochemical models: the cosmic-ray
ionization rate.
Speaker: David Neufeld (Johns Hopkins University)
Observations
at far- and mid-infrared wavelengths provide a wealth of information
about the molecular inventory of interstellar gas clouds. Because of the
different chemical pathways responsible for their formation and
destruction, different molecules probe specific aspects of the
interstellar environment. Carefully interpreted, they provide unique
information about the molecular fraction, the UV radiation field, the
dissipation of energy within the turbulent ISM, and the cosmic-ray
density in the Galaxy. This talk will include a general overview of
astrochemical probes of the interstellar medium, along with new
estimates of a key parameter in astrochemical models: the cosmic-ray
ionization rate.
Observations at far- and mid-infrared
wavelengths provide a wealth of information about the molecular
inventory of interstellar gas clouds. Because of the different chemical
pathways responsible for their formation and destruction, different
molecules probe specific aspects of the interstellar environment.
Carefully interpreted, they provide unique information about the
molecular fraction, the UV radiation field, the dissipation of energy
within the turbulent ISM, and the cosmic-ray density in the Galaxy. This
talk will include a general overview of astrochemical probes of the
interstellar medium, along with new estimates of a key parameter in
astrochemical models: the cosmic-ray ionization rate.
Observations
at far- and mid-infrared wavelengths provide a wealth of information
about the molecular inventory of interstellar gas clouds. Because of the
different chemical pathways responsible for their formation and
destruction, different molecules probe specific aspects of the
interstellar environment. Carefully interpreted, they provide unique
information about the molecular fraction, the UV radiation field, the
dissipation of energy within the turbulent ISM, and the cosmic-ray
density in the Galaxy. This talk will include a general overview of
astrochemical probes of the interstellar medium, along with new
estimates of a key parameter in astrochemical models: the cosmic-ray
ionization rate.
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