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HH 46 and HH 47 (Herbig-Haro Object)


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HH 46 and HH 47
Herbig-Haro Object (ハービッグ・ハロー天体)

別名 (Other names)
Herbig-Haro 46, Herbig-Haro 47, HH-46, HH-47

距離 (Distance)
1,400光年 (1,400 light-years)

星座 (Constellation)
ほ座 (Vel) (Vela)

HH 46 and HH 47 is a Herbig-Haro object located 1,400 light years from the Earth in the constellation Vela.

HH 46 and HH 47 (Herbig-Haro Object) : Picture

HH 46 and HH 47 (Herbig-Haro Object)
HH 46 and HH 47 (Herbig-Haro Object)
(C) NASA/JPL-Caltech
In this processed Spitzer Space Telescope image, baby star HH 46/47 can be seen blowing two massive "bubbles." The star is 1,140 light-years away from Earth.

The infant star can be seen as a white spot toward the center of the Spitzer image. The two bubbles are shown as hollow elliptical shells of bluish-green material extending from the star. Wisps of green in the image reveal warm molecular hydrogen gas, while the bluish tints are formed by starlight scattered by surrounding dust.

These bubbles formed when powerful jets of gas, traveling at 200 to 300 kilometers per second, or about 120 to 190 miles per second, smashed into the cosmic cloud of gas and dust that surrounds HH 46/47. The red specks at the end of each bubble show the presence of hot sulfur and iron gas where the star's narrow jets are currently crashing head-on into the cosmic cloud's gas and dust material.

Whenever astronomers observe a star, or snap a stellar portrait, through the lens of any telescope, they know that what they are seeing is slightly blurred. To clear up the blurring in Spitzer images, astronomers at the Jet Propulsion Laboratory developed an image processing technique for Spitzer called Hi-Res deconvolution.

This process reduces blurring and makes the image sharper and cleaner, enabling astronomers to see the emissions around forming stars in greater detail. When scientists applied this image processing technique to the Spitzer image of HH 46/47, they were able to see winds from the star and jets of gas that are carving the celestial bubbles.

This infrared image is a three-color composite, with data at 3.6 microns represented in blue, 4.5 and 5.8 microns shown in green, and 24 microns represented as red.

HH 46 and HH 47 (Herbig-Haro Object)
HH 46 and HH 47 (Herbig-Haro Object)
(C) NASA/JPL-Caltech/ALMA

HH 46 and HH 47 (Herbig-Haro Object)
HH 46 and HH 47 (Herbig-Haro Object)
(C) ESO/ALMA (ESO/NAOJ/NRAO)/H. Arce. Acknowledgements: Bo Reipurth

HH 46 and HH 47
Young Star, Dark Cloud
(C) A. Noriega-Crespo (SSC/Caltech) et al., JPL, Caltech, NASA (Inset: Digital Sky Survey)
High-speed outflows of molecular gas from a young stellar object glow in infrared light, revealing themselves in this recent false-color image from the Spitzer Space Telescope. Cataloged as HH (Herbig-Haro) 46/47 the infrared source is lodged within a dark nebula or Bok globule - near the lower right corner of the dark nebula in the optical inset - that is largely opaque when viewed in visible light. The energetic outflow features extend for nearly a light-year, burrowing into the dark interstellar material, and are attributed to early stages in the life of a sun-like star. They may well represent a phase of our own Sun's evolution which took place some 4.5 billion years ago, along with the formation of our solar system from a circumstellar disk. A tantalizing object to explore with Spitzer's infrared capabilities, this young star system is relatively nearby, located only some 1,140 light-years distant in the nautical constellation Vela.

Herbig-Haro object HH 46/47
Herbig-Haro object HH 46/47
(C) ESO/Bo Reipurth
This image from ESO's New Technology Telescope at the La Silla Observatory in Chile shows the Herbig-Haro object HH 46/47 as jets emerging from a star-forming dark cloud. This object was the target of a study using ALMA during the Early Science phase.

HH 46/47
The Herbig-Haro object HH 46/47 in the constellation of Vela
(C) ESO, IAU and Sky & Telescope
This chart shows the southern constellation of Vela. Most of the stars that can be seen in a dark sky with the unaided eye are marked. The location of the star formation region that hosts the Herbig-Haro object HH 46/47 is indicated with a red circle. They cannot be seen visually with a small telescope.

HH 47, HH 34 and HH 2
Stellar jets HH 47, HH 34 and HH 2
(C) NASA, ESA, and P. Hartigan (Rice University)

HH-47
Jet from Young Star (HH-47)
(C) J. Morse/STScI, and NASA/ESA
This view of a three trillion mile-long jet called HH-47 reveals a very complicated jet pattern that indicates the star (hidden inside a dust cloud near the left edge of the image) might be wobbling, possibly caused by the gravitational pull of a companion star.

HH 46 and HH 47 HH 46 and HH 47
HH 46 and HH 47
(C) NASA
HH 46 and HH 47
(C) NASA
HH 46 and HH 47 HH-47
HH 46 and HH 47
(C) ESO
HH-47
(C) NASA/ESA
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HH 46 and HH 47 (Herbig-Haro Object) : Movie

Zooming in on the Herbig-Haro object HH 46/47
This zoom sequence starts with a wide view of the southern Milky Way and then closes in on a rich region of dark clouds and young stars in the constellation of Vela. One of these dark star-forming clouds features the Herbig-Haro object HH 46/47 where jets from a young star are colliding with the surrounding material. This object was the target of a study using ALMA during the Early Science phase.
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