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Can anyone explain Of stars? I've seen references to them in papers about WR and LBV stars but when I search for them I can't find much.

orangewhale wrote:Can anyone explain Of stars? I've seen references to them in papers about WR and LBV stars but when I search for them I can't find much.

Here. I'm not certain, but the spectral features sound to me like they would be indicative of being slightly more evolved than an O-type main sequence star.

How do y'all prepare notes for this event?

alchzh wrote:How do y'all prepare notes for this event?

Start off with Wikipedia and get the general concepts down, along with specific details for the general information. After, if you can get yourself a copy of Carroll and Ostlie, it usually does wonders. For DSOs, start off with Wikipedia and then gradually move onto research papers. It's useful to have a lot of images of each of the DSOs as well. For math, I just have one big formula sheet of stuff I've found over the years.

Hi, I need to know how you guys get information on DSOs because I can't get some information for some of the objects. Please do let me know ASAP if there is a database which I can access because even Wikipedia and NASA don't have all of the information. Thank you in advance!

Also, what resources like computers and sheets are we allowed to bring for the tests and how many for each team of two?

ashucha wrote:Hi, I need to know how you guys get information on DSOs because I can't get some information for some of the objects. Please do let me know ASAP if there is a database which I can access because even Wikipedia and NASA don't have all of the information. Thank you in advance!

Research papers and Chandra.

ashucha wrote:Also, what resources like computers and sheets are we allowed to bring for the tests and how many for each team of two?

Any laptop is allowed with no WiFi. Must have at most a total of 2 binders and laptops (i.e. 1 laptop 1 binder, 2 laptops, etc). You can bring whatever information you want.

antoine_ego wrote:

ashucha wrote:Hi, I need to know how you guys get information on DSOs because I can't get some information for some of the objects. Please do let me know ASAP if there is a database which I can access because even Wikipedia and NASA don't have all of the information. Thank you in advance!

Research papers and Chandra.

First of all, thank you. I used Chandra and some research papers but they still could not give me more information than NASA and Wikipedia. I would really appreciate it if you could tell me which research papers you used. Thanks!

ashucha wrote:

antoine_ego wrote:

ashucha wrote:Hi, I need to know how you guys get information on DSOs because I can't get some information for some of the objects. Please do let me know ASAP if there is a database which I can access because even Wikipedia and NASA don't have all of the information. Thank you in advance!

Research papers and Chandra.

First of all, thank you. I used Chandra and some research papers but they still could not give me more information than NASA and Wikipedia. I would really appreciate it if you could tell me which research papers you used. Thanks!

Generally, searching the DSO on arxiv is enough to get a decent amount of information. There is a limit to the amount of information an ES will dare ask on a test, so you don't need every last little detail.

antoine_ego wrote:

ashucha wrote:

antoine_ego wrote:
Research papers and Chandra.

First of all, thank you. I used Chandra and some research papers but they still could not give me more information than NASA and Wikipedia. I would really appreciate it if you could tell me which research papers you used. Thanks!

Generally, searching the DSO on arxiv is enough to get a decent amount of information. There is a limit to the amount of information an ES will dare ask on a test, so you don't need every last little detail.

Another good resource is SIMBAD; It usually has almost all the numbers I need for a DSO. Arxiv is better for very specific things and if you're good at reading these kinds of documents. Chandra is the most user-friendly probably. AAVSO is also a nice website to find light curves of variable stars on; I've found that many tests-makers use it. All of these sites should have all the information you will ever need for the DSOs, but even more research on your own time can never hurt.