The Mysterious Star MWC349

A very young massive star.

The Mysterious Star MWC349
An infrared 3-color image of the region of star formation which includes the mysterious maser star MWC349 (the very bright star at the right). New spectroscopic results find that the star is probably not physically associated with a nearby star whose age (assuming it was a binary companion) had been used to constrain the age of MWC349 itself. As a result, MWC349 might be a very young massive star. Strelnitski et al., 2013

Atomic mists in interstellar space can once in a while create natural masers that sparkle with bright, narrow beams emissions. Areas of dynamic star arrangement produce the absolute most tremendous such masers- in one case transmitting as much vitality in a solitary unearthly line as does our Sun in its whole unmistakable range.

In these sources, the maser radiation originates from atoms like water or OH that are energized by impacts and the radiation condition around the youthful stars.

In 1989, astronomers discovered maser emission from atoms of atomic hydrogen gas around the star MWC349. The emissions are bright enough that varies themselves in time,  thus, they change sensitivity to changes in the detailed excitation processes.

Consequent observations throughout the decades have discovered various masing hydrogen lines around this star. This enables researchers to demonstrate the transmitting area all the more precisely.

MWC349 has two especially baffling highlights. To begin with, it is a practically remarkable case of a hydrogen maser source. Despite many years of looking for comparative sources, just a couple of different cases have been found, and they are for the most part much fainter and less sensational. The second is that its age isn’t known: it has been recommended to be an exceptionally youthful star as yet moving toward the fundamental succession, or an advanced star very much into its primary arrangement development.

To carefully measures the velocities of the two stars from the wavelengths of their spectral lines, scientists used the TRES spectrograph of the 1.5-meter Tillinghast Reflector of the Fred L. Whipple Observatory and the Keck/HIRES spectrograph. Doing this, they found that the two differ by about thirty-five kilometers per second, making the binary companion scenario unlikely.

According to scientists, this could probably the second star at a coincidental alignment. They suggest MWC349 is not gravitationally bound and is a young, massive star in a region of active star formation.