COLOQUIO DE LA SEMANA

 
 Ponente: Anahí Caldú Primo (IRyA, UNAM)
 
 
Fecha

Miercoles 12 de Septiembre, 2018

 
Hora y Lugar: 
12:00h, Sede IA-CU,
 Auditorio Paris Pishmish
 
Titulo: From velocity dispersions to dispersion of Astronomy
 
Resumen: I will present a short summary of the work I did during my PhD on velocity dispersions of molecular gas in nearby galaxies. Despite the fact that molecular gas in galaxies is the most essential ingredient for the star formation process, its thorough characterization has not yet been accomplished. On 0.5 kpc scales (the average spatial resolution of my work), the measured CO velocity dispersions have a mean value of ∼ 12 km/s. These values are higher than previously expected, and are comparable to those measured for neutral atomic gas. To investigate the origin of these large dispersions, a comparison between interferometric and single-dish line width measurements for NGC 4736 and NGC 5055 (at ∼ 0.5 kpc resolution) and for the neighboring Andromeda galaxy, M 31, (at ∼ 100 pc resolution) is presented. The results point to the existance of a "warm" molecular gas component which is not related to the star formation process. At the end I will shortly speak about the outreach projects in Astronomy we carry out at IRyA.


 
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Nissim Fraija, Aldo Rodriguez (Esta dirección de correo electrónico está siendo protegida contra los robots de spam. Necesita tener JavaScript habilitado para poder verlo.)

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