1 / 5

The Stellar Content of the CDF-N Survey: A Deep GALACTIC survey

The Stellar Content of the CDF-N Survey: A Deep GALACTIC survey. Ann E. Hornschemeier. Collaborators. Eric Feigelson (PSU) Giusi Micela (Palermo) Franz Bauer (PSU). Mark Bautz (MIT) Pat Broos (PSU) Leisa Townsley (PSU) George Chartas (PSU) Wal Sargent (Caltech) Gillian Wilson (SSC).

sven
Download Presentation

The Stellar Content of the CDF-N Survey: A Deep GALACTIC survey

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. The Stellar Content of the CDF-N Survey:A Deep GALACTIC survey Ann E. Hornschemeier

  2. Collaborators Eric Feigelson (PSU) Giusi Micela (Palermo) Franz Bauer (PSU) Mark Bautz (MIT) Pat Broos (PSU) Leisa Townsley (PSU) George Chartas (PSU) Wal Sargent (Caltech) Gillian Wilson (SSC) David Alexander (PSU) Niel Brandt (PSU) Gordon Garmire (PSU) Don Schneider (PSU)

  3. The Evolution of Stellar X-ray Activity Decline in magnetic activity: rotational spin-down (Shrijver & Zwaan 2000) • From studying stellar clusters  magnetic activity evolves strongly in stellar youth(e.g., Micela et al. 1985, Guedel et al. 1997, Feigelson & Montmerle 1999, Micela 2002) • Stellar magnetic activity on long timescales (1-10 Gyr) not well-constrained • High Galactic latitude & sensitivity of the CDF surveys  study of old-disk stars Micela et al. 2002

  4. Observational Tests • Verification  EMSS(Favata et al. 1995) • Star counts probe Galactic structure (e.g., review: Bahcall 1986) • XCOUNT (Micela et al. 1992) Convolution of stellar XLF and spatial distribution of stars XCOUNT Prediction for 1 Ms CDF-N (assuming V=22.5 completeness)

  5. XCOUNT Predictions for CDF-N Survey • Overall, 20 stars predicted while 12 observed • Agreement in # of dM stars • Disagreement in # of “yellow” stars XCOUNT Prediction for 1 Ms CDF-N (assuming V=22.5 completeness)

More Related