LW discussion of YSOs
Hey guys, Here's the questions we decided to answer. Write your answers with your signature and list more questions you came up with.--Peggy Piper 10:14, 6 June 2012 (PDT)
Contents
When is an object a young stellar object?
Young Stellar Objects are stars in the earliest stage of development. Two Types: Protostars and pre-main sequence stars.--*Emily Venezio* 19:53, 10 June 2012 (PDT)Emily
Where do you find YSOs?
YSOs are almost always found within or near gas and dust in outer space, most often embedded in molecular clouds. --Ashley 15:20, 6 June 2012 (PDT)
How do you decide its a YSO?
YSO's are classified based on using the slope of their SED.--*Emily Venezio* 19:50, 10 June 2012 (PDT)Emily
When does it stop being a YSO?
According to Wikipedia, a YSO (pre-main sequence) turns into a main sequence star when "nuclear fusion of hydrogen becomes the dominant energy production process and the excess energy gained from gravitational contraction has been lost." I assume fusion could still occur in the pre-main sequence phase, but it is not the dominant source of energy.
What are the qualities of a YSO?
There are 2 types of YSOs: protostars and pre-main sequence (PMS) stars. --Ashley 15:33, 6 June 2012 (PDT)
Yes, there are two types YSOs, the protostars are the more mysterious and exotic being so embedded in surrounding in gas and dust that they are invisible at the traditional optical wavelength. --*Emily Venezio* 19:50, 10 June 2012 (PDT)Emily
Why study YSOs?
If we know more about stars and star formation, we can learn more about what makes a star optimal for supporting life. The earliest stages of a star's life often last the shortest amount of time, so we have the least amount of information on these stages.
Other info?
"Protostars are the most mysterious and exotic YSOs being so heavily embedded in surrounding gas and dust that they are invisible at the traditional optical wavelengths and can only be studied in the infrared, millimeter or sub-millimeter wavelength bands." (got this info from Harvard-Smithsonian Center for Astrophysics --Ashley 15:33, 6 June 2012 (PDT)
