The Formation of a Young Star: IRAS 08235-4316
Scientists discover a young star with unique features in the Vela constellation.
Joshua Bennett Lovell, Kristina Monsch, Garrett K. Keating, David J. Wilner, Gordian Edenhofer, Mark Gurwell, Ramprasad Rao
― 5 min read
Table of Contents
In the vastness of space, where stars are born, we have stumbled across a fascinating find: a young star known as IRAS 08235-4316. This baby star is not just any ordinary star; it sits in the Vela constellation, close to where Puppis begins, and has some intriguing features which make it stand out from the crowd.
What Makes IRAS 08235-4316 Special?
First off, IRAS 08235-4316 is a Class I Young Stellar Object (YSO), which is fancy talk for saying it’s still in its toddler years. This means it’s not fully formed yet and is still working on growing up. It has a dusty disk around it, a bit like a cosmic pastry waiting to be filled with planets. What's exciting is that it has an outflow – think of it as releasing a burst of energy, kind of like when you finally let out a sneeze after holding it in for too long.
The Search for Hidden Gems
The discovery of IRAS 08235-4316 didn’t come out of thin air. Scientists were engaged in a hunt looking for new large and obscure celestial objects. They used two powerful tools: the Dark Energy Camera Plane Survey (DECaPS) and the Submillimeter Array (SMA).
DECaPS took a series of optical pictures, while SMA looked at the millimeter waves. Together, these observations helped paint a clearer picture of this elusive star. The data showed that IRAS 08235-4316 displays a unique shape that resembles spread wings, separated by a dark lane in between.
The Visual Treat: What Do the Images Show?
When looking at the DECaPS images, scientists noticed a striking bi-polar shape, which is a telltale sign of a Protoplanetary Disk. Imagine a butterfly with a dark line down the center; that’s kind of what they’re dealing with here. The SMA images added another layer on top, showing a continuation of the disk along that dark lane, suggesting that this young star is surrounded by lots of materials that could one day form planets.
Gas and Motion
One of the more thrilling discoveries is the presence of Carbon Monoxide (CO) gas observed through the SMA. They detected a velocity pattern in the gas that hints at a possible rotation. It’s like watching a cosmic dance, where the gas is spinning around the star, keeping it company as it grows.
There also seems to be additional CO gas nearby, which could either be falling in or streaming out. It’s the universe’s way of keeping things interesting. You never know what might happen next!
Estimating the Distance
One of the big challenges for astronomers is figuring out just how far away IRAS 08235-4316 is. They estimated it might be around 191 parsecs away, which is a fancy way of saying it's about 624 light-years from Earth. That’s pretty far, but not so far that we can’t see it.
To put it into perspective, if you were to hop on a spaceship moving at the speed of light, you'd still be in for a long journey before you reached this star!
Building the Star: It Takes Time
Just like baking a cake, creating a star takes time and the right ingredients. Starting from small bits and pieces of dust and gas in space, these materials come together to make a star. Over time, as the materials stick together and grow, they form a disk, while the leftover gas can either be blown away in powerful Outflows or collapse inwards, feeding the star.
For IRAS 08235-4316, the materials are there, and it seems to have enough gas to potentially form planets. Isn’t that exciting? The universe is like a cosmic bakery, and we’re witnessing the creation of a new celestial cake!
Young Stars
UnderstandingOver the last decade, studies of young stars have advanced significantly. Observations through various telescopes have revealed the details of star formation, disk properties, and behaviors. However, we still have many questions. For example, how common are these young stars? Scientists are still figuring that out!
Interestingly, most of the stars we’ve found tend to be more on the side of ordinary, but this one is special. It’s a highly inclined young star with an outflow, and we’re only just beginning to understand what that means.
The Search Continues
Finding IRAS 08235-4316 was just the beginning. Scientists want to identify more of these curious young stars to learn about our galaxy’s formation. The hope is that by combining data from different surveys, they can uncover hidden gems like IRAS 08235-4316 and get a better grasp on how stars and planets come together.
Conclusion: A Glimpse into the Future
So, what’s next for IRAS 08235-4316? As it continues growing and developing, scientists will keep a close eye on it. They will study its outflows, gas motions, and surrounding materials. Who knows? Maybe one day we’ll see the first planets forming right before our very eyes!
In the grand scheme of things, IRAS 08235-4316 is a reminder that the universe is full of wonders waiting to be discovered. Out there in the dark, playful and vibrant, stars like IRAS 08235-4316 are forming, preparing to light up the cosmos for generations to come. Keep looking up, because the next big discovery might be just around the corner!
Title: DECaPS and SMA discovery of a highly-inclined class I YSO with an outflow: IRAS 08235-4316
Abstract: We present images of IRAS~08235--4316 with the Dark Energy Camera Plane Survey (DECaPS; spanning 0.398--1.034$\,\mu$m, at ${\sim}1''$ resolution) and the Submillimeter Array (SMA; at 1.38\,mm/217\,GHz, at ${\sim}1.9''\times1.2''$ resolution), a YSO located in the Vela constellation near to the Puppis boundary, detected in a systematic search for new large/extended emission sources. The DECaPS data show an asymmetric bi--polar morphology with a large angular extent of ${\sim}7.1''$ separated by a dark lane, characteristic of highly--inclined protoplanetary disks and less-evolved YSOs with outflows. The SMA data show an extended continuum structure along the optical dark lane with a smaller angular extent of ${\sim}4.6''$. The detected $^{12}$CO J=2--1 emission tentatively shows a velocity gradient along the position angle of the dark lane/millimeter continuum, that may trace rotating gas. Additional $^{12}$CO emission is present which could trace infalling/outflowing gas, and/or a nearby gas cloud. We estimate a distance to IRAS~08235--4316 of at least ${\sim}191\,$pc. Supported by additional SED modelling, we infer IRAS~08235--4316 to be a newly discovered class~I YSO with an outflow, host to an embedded protoplanetary disk, with a large millimeter radius of ${\sim}440$\,au and dust mass ${\gtrsim}11\,M_\oplus$.
Authors: Joshua Bennett Lovell, Kristina Monsch, Garrett K. Keating, David J. Wilner, Gordian Edenhofer, Mark Gurwell, Ramprasad Rao
Last Update: 2024-11-15 00:00:00
Language: English
Source URL: https://arxiv.org/abs/2411.10518
Source PDF: https://arxiv.org/pdf/2411.10518
Licence: https://creativecommons.org/licenses/by-nc-sa/4.0/
Changes: This summary was created with assistance from AI and may have inaccuracies. For accurate information, please refer to the original source documents linked here.
Thank you to arxiv for use of its open access interoperability.
Reference Links
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