Beautiful New Hubble Photo Shows Hot, Young Variable Stars in the Orion Nebula

Here’s another striking image from the venerable Hubble Space Telescope. These billows of blue and red show a detailed look at a small portion of the famous Orion Nebula. But what really catches the eye are the brilliant stars with the cross-shaped diffraction spikes — a hallmark of Hubble images.

In the center is the bright variable star V 372 Orionis and a smaller companion star in the upper left is named BD-05 1307.

V 372 Orionis, also known as HD 36917 or Ori 47, is a so-called Orion variable — a variable star which exhibits irregular variations in its brightness. Orion variables are often associated with diffuse nebulae, just like the nebulous gas and dust of the Orion Nebula, a massive star-forming region full of young, hot stars that lies approximately 1,450 light-years from Earth.

BD-05 1307, otherwise known as 2MASS J05345223-0533085 or TIC 427373786, is classified as an emission-line star.

This image uses data from two of Hubble’s instruments. Data from the Advanced Camera for Surveys and Wide Field Camera 3 at infrared and visible wavelengths were layered to reveal rich details of this corner of the nebula, a frequent target of Hubble over the years.

The stunning, shaped clouds of gas in the Orion Nebula make it beautiful, but also make it difficult to see inside of. This image of the Orion Nebula was captured by the Hubble Telescope. Image: NASA, ESA, M. Robberto (STScI/ESA) and The Hubble Space Telescope Orion Treasury Project Team

The spikes in the image of stars are not actually parts of the stars, but are imaging artifacts created by the Hubble itself. ESA explains that these prominent artefacts are “created by starlight interacting with Hubble’s inner workings, and as a result they reveal hints of Hubble’s structure. The four spikes surrounding the stars in this image are created by four vanes inside Hubble supporting the telescope’s secondary mirror.”

Orion Nebula by JWST — *The inner region of the Orion Nebula as seen by the James Webb Space Telescope’s NIRCam instrument. Credit: NASA, ESA, CSA, PDRs4All ERS Team; image processing Salomé Fuenmayor*

In comparison, the diffraction spikes of the James Webb Space Telescope are six-pointed as a result of Webb’s hexagonal mirror segments and 3-legged support structure for the secondary mirror.

The post Beautiful New Hubble Photo Shows Hot, Young Variable Stars in the Orion Nebula appeared first on Universe Today.

Comments

Researchers Match Up 12 Meteorites with the Near-Earth Asteroids They Came From

Every day meteoroids blast through our planet’s atmosphere to hit the ground as meteorites. A team of researchers in Italy traced twelve of them to progenitor asteroids that orbit in near-Earth space. Scientists treasure meteorites because they reveal information about their parent bodies. In an arXiv paper, two Italian researchers—Albino Carbognani and Marco Fenucci—analyze the characteristics of the parent bodies of 20 selected meteorites. They were able to track all but eight back to their parent asteroids. Based on their work, the pair says at least a quarter of meteorites come from collisions that happened in near-Earth space and not in the Main Belt. Meteorites from Near-Earth Asteroids: How They Got Here Many meteorites are chondritic, similar to asteroids in the Main Belt (or came from it). In their paper, the authors point out that progenitor meteoroids (including many that fall to Earth and become meteorites) formed millions of years ago following collisions between main-...

JWST Takes a Detailed Look at Jupiter’s Moon Ganymede

Nature doesn’t conform to our ideas of neatly-contained categories. Many things in nature blur the lines we try to draw around them. That’s true of Jupiter’s moon Ganymede, the largest moon in the Solar System. The JWST took a closer look at Ganymede, the moon that’s kind of like a planet, to understand its surface better. Ganymede is basically a planet, except it doesn’t orbit the Sun. If it did orbit the Sun instead of Jupiter, it would be indistinguishable from a planet. It has a differentiated internal structure with a molten core that produces a magnetic field. It has a silicon mantle much like Earth’s, and has a complex icy crust with a deep ocean submerged beneath it. It has an atmosphere, though it’s thin. It’s also larger than Mercury, and almost as large as Mars. According to the authors of a new study, it’s an archetype of a water world. But even with all this knowledge of the huge moon, there are details yet to be revealed. This is especially true of its complex surface...

The Ultraviolet Habitable Zone Sets a Time Limit on the Formation of Life

The field of extrasolar planet studies has grown exponentially in the past twenty years. Thanks to missions like Kepler, the Transiting Exoplanet Survey Satellite (TESS), and other dedicated observatories, astronomers have confirmed 5,690 exoplanets in 4,243 star systems . With so many planets and systems available for study, scientists have been forced to reconsider many previously-held notions about planet formation and evolution and what conditions are necessary for life. In the latter case, scientists have been rethinking the concept of the Circumsolar Habitable Zone (CHZ). By definition, a CHZ is the region around a star where an orbiting planet would be warm enough to maintain liquid water on its surface. As stars evolve with time, their radiance and heat will increase or decrease depending on their mass , altering the boundaries of the CHZ. In a recent study , a team of astronomers from the Italian National Institute of Astrophysics (INAF) considered how the evolution of star...

INFORMATION

Search This Blog