®®®® SIIA Público

Título del libro: Science With A Next-Generation Very Large Array
Título del capítulo: Resolving the Structure and Kinematics of the Youngest HII Regions and Radio Jets from Young Stellar Objects

Autores UNAM:
ROBERTO JOSE GALVAN MADRID; CARLOS EUGENIO CARRASCO GONZALEZ; LUIS FELIPE DE JESUS RODRIGUEZ JORGE; STANLEY EUGENE KURTZ SMITH;
Autores externos:

Idioma:

Año de publicación:
2018
Palabras clave:

H-II REGIONS; CONTINUUM EMISSION; MASSIVE STARS; SPECTRAL INDEXES; VLA OBSERVATIONS; X-RAY; ULTRACOMPACT; DISKS; ACCRETION


Resumen:

In this contribution we explore the new science that a next generation Very Large Array (ngVLA) would be able to perform on the topics of the youngest Hit regions and (proto)stellar jets. Free-free continuum and radio recombination line (RRL) emission are often the only way of peering into the dense envelopes surrounding (proto)stars of all masses, and trace their initial feedback in the form of `radio jets', `hypercompact Ha regions', or photoevaporating, partially-ionized flows. Properly disentangling free-free from dust emission is also mandatory in studies of protoplanetary and accretion disks. Current VLA research has reached an impasse in which a population of faint ionized radio sources, probably corresponding to the above mentioned objects, is detected, but their nature is mostly unknown. The ngVLA would allow us to resolve the density structure and kinematics of such sources, revolutionizing our knowledge of star formation across the entire stellar-mass spectrum.


Entidades citadas de la UNAM: