Classsification of Pre main sequence(PMS) stars

  • Context: Graduate 
  • Thread starter Thread starter vrinda mukund
  • Start date Start date
  • Tags Tags
    Stars
Click For Summary

Discussion Overview

The discussion revolves around the classification of pre-main sequence (PMS) stars based on color-color diagrams, specifically the distinctions among class 0, class I, and class II. Participants are exploring the application of these classifications in the context of plotting color-color diagrams using data from the Wide-field Infrared Survey Explorer (WISE) for an open cluster.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests clarification on the classification of PMS stars and seeks resources for plotting color-color diagrams.
  • Another participant asserts that the classification applies to PMS stars, countering a claim that it pertains only to main sequence stars.
  • A different participant references a specific paper (Koenig et al., 2012) to support the applicability of the classification to PMS stars.
  • There is a request for better references to the mentioned paper, indicating that not all participants are familiar with it.
  • Additional references to related papers and resources are provided by a participant, including links to various studies and notes on young stellar objects.

Areas of Agreement / Disagreement

Participants express disagreement regarding the applicability of the classification to PMS stars versus main sequence stars. Some participants assert that it is applicable to PMS, while others challenge this assertion, indicating that the discussion remains unresolved.

Contextual Notes

There are limitations in the discussion regarding the familiarity of participants with specific references and the assumptions underlying the classification system. The discussion does not resolve the differing views on the applicability of the classification.

vrinda mukund
Messages
36
Reaction score
0
Hello everyone,
there is a classification of PMS based on color-color diagram as class 0, class I and class II. can some one please explain more about this classification or provide me with some useful link. I am trying to plot color-color diagram of an Open cluster using Wise Band data.
 
Astronomy news on Phys.org
That applies to main sequence stars, not protostars.
 
no, its applicable to PMS. see the appendix portion of the paper by Koenig et.al(2012).
 
@vrinda - please post a better reference - meaning we did not happen to read the paper you have in mind, so how can we read it, too?
 
vrinda mukund said:
no, its applicable to PMS. see the appendix portion of the paper by Koenig et.al(2012).
This paper?

Koenig, X. P. and Leisawitz, D. T. and Benford, D. J. and Rebull, L. M. and Padgett, D. L. and Assef, R. J. (2012) Wide-field Infrared Survey Explorer Observations of the Evolution of Massive Star-forming Regions. Astrophysical Journal, 744 (2). p. 130. ISSN 0004-637X
http://resolver.caltech.edu/CaltechAUTHORS:20120130-115037613

There is a paper by Koenig (2008) http://arxiv.org/abs/0808.3284 that is referenced by:

Wide-Field Survey of Emission-line Stars in IC 1396
http://arxiv.org/pdf/1201.2761.pdf

Pre-main-sequence population in NGC 1893 region
http://arxiv.org/pdf/1207.5632.pdf


Perhaps this is of interest: Introduction to Young Stellar Objects
http://astro.berkeley.edu/~ay216/08/NOTES/Lecture24-08.pdf

http://hubblesite.org/hubble_discoveries/science_year_in_review/pdf/2007/progressive_star_formation_in_the_magellanic_clouds.pdf
 
Last edited:

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 21 ·
Replies
21
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 72 ·
3
Replies
72
Views
8K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
2
Views
1K