1 / 17

Studies of the Properties of Blue Stragglers

Studies of the Properties of Blue Stragglers. Liu Guoqing 2006.04.14. Outline. Motivation The progress and results of my work Future steps of my work. Motivation. Bluer and more luminous than MS turnoff. Working sample: Blue stragglers in M67.

psyche
Download Presentation

Studies of the Properties of Blue Stragglers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Studies of the Properties of Blue Stragglers Liu Guoqing 2006.04.14

  2. Outline • Motivation • The progress and results of my work • Future steps of my work

  3. Motivation • Bluer and more luminous than MS turnoff

  4. Working sample: Blue stragglers in M67 • Data from the 2.12-m Guillermo Haro Telescope, at Cananea, Mexico (May 25) Boller & Chivens spectrograph Cassegrain focus grating:150l/mm slit:250μ 3900~7000A Resolution:6.4A R=2500 gain:1.85 noise:3.7 • All the reduction has been finished with IRAF (July) ccdproc zerocombine flatcombine response imcombine cosmicrays apall identify sensfunc calibrate

  5. 9.38 0.045

  6. Fundamental quantities:(1) Lick indices

  7. Another way to calibrate

  8. Fundamental quantities: (2) spectral fitting 8790

  9. Future steps of my work • Derive the basic parameters of blue stragglers by Lick indices • Analysis the intrinsic properties of blue stragglers • Analysis the possible formation ways of blue stragglers • Analysis the environment of stellar system

  10. Thank you !

More Related