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VLA Focuses on Inner Region of Massive Protostellar Jet 5nvklj





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VLA Focuses on Inner Region of Massive Protostellar Jet

Dragon
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VLA Focuses on Inner Region of Massive Protostellar Jet Empty VLA Focuses on Inner Region of Massive Protostellar Jet

Post by Dragon Fri Jun 04, 2021 4:22 am

Low- and high-mass protostars propel jets outward perpendicular to a disk of material closely orbiting the star.

In stars with masses similar to the Sun, these jets are narrowed, or focused, relatively tightly near to the star in a process called collimation.

Because most high-mass protostars are more distant, studying the regions close to them has been more difficult, so astronomers were unclear if this was the case with them.

Cep A HW2 is expected to develop into a new star about 10 times more massive than the Sun.

The new VLA images of the system showed the finest detail yet seen in such an object, giving the astronomers their first view of the innermost portion of the jet, a portion roughly as long as the diameter of the Solar System.


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Dragon
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Post by Dragon Fri Jun 04, 2021 4:26 am

VLA Focuses on Inner Region of Massive Protostellar Jet Image_9728_1-Cep-A-HW2
Image credit: Bill Saxton, NRAO, AUI & NSF.

An artist’s conception of Cep A HW2, showing a wide-angle wind originating close to the star and an accretion disk, with a much narrower jet farther away.


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VLA Focuses on Inner Region of Massive Protostellar Jet 334pu7m

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Post by Dragon Fri Jun 04, 2021 4:27 am

VLA Focuses on Inner Region of Massive Protostellar Jet Image_9728_2-Cep-A-HW2
. Image credit: Carrasco-Gonzalez et al. / Bill Saxton, NRAO, AUI & NSF / STScI.

VLA image of the jet from Cep A HW2, with surrounding area shown in the image from the NASA/ESA Hubble Space Telescope; circles indicate location of the accretion disk, not seen in this image.


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VLA Focuses on Inner Region of Massive Protostellar Jet 334pu7m

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Post by Dragon Fri Jun 04, 2021 4:28 am



Stars of Cepheus


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VLA Focuses on Inner Region of Massive Protostellar Jet 334pu7m

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Post by Dragon Fri Jun 04, 2021 4:30 am



Protostellar Jets


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Post by Dragon Fri Jun 04, 2021 4:55 am



Rho Ophiuchi Cloud


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