Вадим Дудченко
Администратор портала

The bright stellar jet is being emitted by Parengo 2042, a protostar that resides within the reflection nebula NGC 1977.

Hubble captured a bright jet (orange object at the bottom center of the image) from the protostar Parengo 2042 in this image of NGC 1977. Image credit: NASA / ESA / Hubble / J. Bally, University of Colorado at Boulder / Gladys Kober, NASA & Catholic University of America.

NGC 1977 lies approximately 1,500 light-years away in the direction of the constellation of Orion.

Otherwise known as C 0532-048, it is part of a trio of reflection nebulae that make up the much larger Running Man Nebula.

NGC 1977 was discovered by the German-born British astronomer William Herschel on January 18, 1786.

“The young star Parengo 2042 is embedded in a disk of debris that could give rise to planets,” Hubble astronomers explained.

“The star powers a pulsing jet of plasma that stretches over two light-years through space, bending to the north in the Hubble image.”

“The gas of the jet has been ionized until it glows by the radiation of a nearby star, 42 Orionis.”

“This makes it particularly useful to researchers because its outflow remains visible under the ionizing radiation of nearby stars.”

“Typically the outflow of jets like this would only be visible as it collided with surrounding material, creating bright shock waves that vanish as they cool.”

Hubble imaged a small section of the Running Man Nebula, which lies close to the famed Orion Nebula and is a favorite target for amateur astronomers to observe and photograph. Image credit: NASA / ESA / Hubble / J. Bally, University of Colorado at Boulder / DSS / Gladys Kober, NASA & Catholic University of America.

“In the image, red and orange colors indicate the jet and glowing gas of related shocks,” they said.

“The glowing blue ripples that seem to be flowing away from the jet to the right of the image are bow shocks facing the star 42 Orionis (not shown).”

“Bow shocks happen in space when streams of gas collide, and are named after the crescent-shaped waves made by a ship as it moves through water.”

“The bright western lobe of the jet is cocooned in a series of orange arcs that diminish in size with increasing distance from the star, forming a cone or spindle shape.”

“These arcs may trace the ionized outer rim of a disk of debris around the star with a radius of 500 times the distance between the Sun and Earth and a sizable (170 AU) hole in the center of the disk.”

“The spindle-like shape may trace the surface of an outflow of material away from the disk and is estimated to be losing the mass of approximately a hundred-million Suns every year.”


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