1 / 33

New ZZ Cetis

New ZZ Cetis. S.O. Kepler & Bárbara Castanheira Brazil. Montreal Bright. NOV. SDSS. 147 known ZZ Cetis 87 SDSS. Montreal Bright. NOV. SDSS. Frequency. NOV. Combined modes. Period (s). Hydrogen layer mass. Our own SNR>50 strip: 160*. PG1159-035 - DOV. 198 identified modes.

ranger
Download Presentation

New ZZ Cetis

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. New ZZ Cetis S.O. Kepler & Bárbara Castanheira Brazil

  2. Montreal Bright NOV SDSS

  3. 147 known ZZ Cetis 87 SDSS

  4. Montreal Bright NOV SDSS

  5. Frequency

  6. NOV

  7. Combined modes Period (s)

  8. Hydrogen layer mass

  9. Our own SNR>50 strip: 160*

  10. PG1159-035 - DOV

  11. 198 identified modes

  12. Average multiplets i=70o

  13. Results • dP/dt (516s)= 1ms/yr = (13.146+0.003)x10-11 s/s, • (517s)=(15.172+0.045)x10-11s/s , (539s)=(-0.339+0.015)x10-11s/s • d2P/dt2 =(1.93+0.08)x10-20 s/s, (517s)=(-81.7+2.7)+10-20 s/s • Protation=1.3935+0.0008 d • dProt/dt=(-2.13+0.05)x10-6 s/s • dR/dt=(-2.8+0.2)x10-12 s/s • dT/dt=(-7.6+0.2)x10-11 s/s • Trapping at 0.83R*+0.05 • DP(l=1)=21.43+0.03s M=0.59+0.02 MSun • DP(l=2)=12.38+0.01s • B<2000G

More Related