Intrigued with this new sight, McNeil contacted
both star formation expert Bo Reipurth and Lowell Observatory. Within
a few hours, follow-up observations were being made with the large
telescope at the University of Hawaii as well as with the giant
8-meter Gemini telescope, also in Hawaii.
“The idea that this thing, first seen on my
3-inch telescope, which one can easily hold using one hand, would
be observed, within 48 hours, by a telescope of 342 tons was absolutely
staggering,” McNeil commented in his interview with BBC News.
The star spotted by McNeil was born in a region
where new stars flare, or flash brightly, about 100 million times
over a period of a few months and then fade away. McNeil had watched
the star bursting out of its placental nebula, the cloudlike mass
of matter situated around the star. The star’s flaring lit
up the surrounding McNeil Nebula, allowing astronomers to look inside
the nebula. By piecing together views of the sky taken automatically
by telescopes over the past year, astronomers have concluded that
the star was first visible last November.
The star, now known as V1647 Ori, is one of the
youngest ever studied – less than a million years old, compared
to the average star’s age of 100 million years. It is also
about the same mass as the sun, which is unusual for its young age.
With the recent improvements in telescope technology, the evolution
of V1647 Ori can be monitored with much greater accuracy and detail
than any previous star has been.
After the star’s discovery, David Weintraub
of Vanderbilt University and Joel Kastner of Rochester Institute
of Technology submitted emergency requests for viewing time on the
orbiting Chandra X-ray Observatory. The two scientists chose to
use the Chandray X-ray Observatory because X-rays are released during
extremely violent natural events, and the flares of V1647 Ori could
be more closely observed by looking at the X-ray release pattern.
Weintraub and Kastner observed V1647 Ori in March.
They found that the star released more X-rays in early March while
it was bright, and it released fewer X-rays in late March when it
was fading. Ted Gibson in Hawaii also found that the X-ray strength
was directly correlated with the flaring of the star.
Currently, scientists think that X-ray production
from stars is dependent on how fast the star spins and how fast
heat energy is leaving the star. However, the X-rays produced from
V1647 Ori are much stronger than expected. Weintraub and Kastner
have proposed that V1647 Ori contains a small disk around it made
of gas and dust leftover from the star’s formation. From this
disk, planets may form. Flares of V1647 Ori may then occur because
pieces of the disk’s material fall onto the surface of the
star, resulting in much more intense X-rays.
“The X-rays are produced and the magnetic
field of the star gets tangled up with the magnetic field of the
disk. Those two magnetic fields act like two ropes that get tangled
up and twisted up, and the star is rotating faster than the disk
is revolving. So those ropes get twisted and twisted and twisted
until they snap,” Weintraub explains, indicating how the protoplanetary
disk may form into a planet.
If Weintraub and Kastner’s hypothesis is valid,
X-ray observation may help distinguish planets that have protoplanetary
disks from those that do not. This hypothesis would also lead to
improved theories about the formation of planets.
Jay McNeil’s nightly study of the sky has
led to a new hypothesis about the formation of our solar system.
McNeil remains quite excited about his discovery, especially since
he is an amateur astronomer and is one of millions of people who
scan the skies nightly.
"I have spent countless hours seeking out the
darkest of skies and peering into the largest of telescopes at distant
galaxies,” remarks McNeil. “So who would have known
that I would take an image of a famous object with a small telescope
from my back yard and find a sun-like star being born."