How To Make A Comet From A Solar Flare
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1 LTT 560 and Wind Accretion in Pre-CVs Claus Tappert (Boris Gänsicke, Matthias Schreiber; Stella Kafka, Kent Honeycutt) Departamento de Astronomía y Astrofísica Pontificia Universidad Católica de Chile, Santiago, Chile ctappert@astro.puc.cl - ctappert/ SOCHIAS, Jan 16, 2009 Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
2 Cataclysmic Variables The Legoland Version: P orb = 80 min 10 h Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
3 Formation of CVs 1) 4) 2) 5) 3) 6) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
4 Formation of CVs 1) 4) 2) 5) pre-cv 3) 6) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
5 LTT 560: Spectroscopy T WD = 7500 K log g = 8.0 SpT Sec = M5.5V (Tappert et al., 2007) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
6 LTT 560: Photometry ellipsoidal variation P orb = 3.54 h flares (Tappert et al., 2007) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
7 LTT 560: Hα Line Profile broad + narrow component antiphased (Tappert et al., 2007) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
8 LTT 560 Echelle: Metal lines Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
9 LTT 560 Echelle: Hα + NaI Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
10 LTT 560 Echelle: Radial velocities Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
11 LTT 560 Echelle: Radial velocities Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
12 LTT 560 Echelle: Radial velocities Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
13 LTT 560 Echelle: Radial velocities Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
14 LTT 560 Echelle: Radial velocities Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
15 LTT 560 Echelle: Doppler Maps Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
16 EC The only other non-magnetic pre-cv to show additional emission (O Donoghue et al., 2003) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
17 Other Non-Magnetic Pre-CVs: UV Spectra Kawka et al., 2008: Ṁ = M /yr Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
18 Magnetic Pre-CVs?: Low Accretion Rate Polars example J2048 (Kafka et al., in prep.) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
19 Non-Magnetic Short Period Pre-CVs: Comparison LTT 560 EC Period [h] Secondary M V M3.5-4V Primary T K log g γ K 1 [km/s] K 2 [km/s] q i Hα flares yes yes Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
20 Non-Magnetic Short Period Pre-CVs: Comparison emission no emission LTT 560 EC MS Peg BPM Period [h] Secondary M V M3.5-4V M3-5V M2.5V Primary T K log g γ 19 63?? K 1 [km/s] (62) K 2 [km/s] q (0.5) i (30) Hα flares yes yes?? Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
21 Non-Magnetic Short Period Pre-CVs: Comparison emission no emission LTT 560 EC MS Peg BPM Period [h] Secondary M V M3.5-4V M3-5V M2.5V Primary T K log g γ 19 63?? K 1 [km/s] (62) K 2 [km/s] q (0.5) i (30) Hα flares yes yes?? + NN Ser (T WD = K): 5 well-studied systems (optical range) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
22 Conclusions Accretion in pre-cvs Surprise, Surprise? Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
23 Conclusions Accretion in pre-cvs Surprise, Surprise? No: late-type dwarfs activity wind Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
24 Conclusions Accretion in pre-cvs Surprise, Surprise? No: late-type dwarfs activity wind Yes: coronal WD emission / active secondaries in CVs? Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
25 Conclusions Accretion in pre-cvs Surprise, Surprise? No: late-type dwarfs activity wind Yes: coronal WD emission / active secondaries in CVs? Potential: CV evolution / AML / mass-transfer modulation Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
26 Conclusions Accretion in pre-cvs Surprise, Surprise? No: late-type dwarfs activity wind Yes: coronal WD emission / active secondaries in CVs? Potential: CV evolution / AML / mass-transfer modulation Problem: low number statistics (5!) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
27 Conclusions Accretion in pre-cvs Surprise, Surprise? No: late-type dwarfs activity wind Yes: coronal WD emission / active secondaries in CVs? Potential: CV evolution / AML / mass-transfer modulation Problem: low number statistics (5!) Future: UVES survey on short period SDSS/SEGUE pre-cvs (Winter 2009) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
28 Conclusions Accretion in pre-cvs Surprise, Surprise? No: late-type dwarfs activity wind Yes: coronal WD emission / active secondaries in CVs? Potential: CV evolution / AML / mass-transfer modulation Problem: low number statistics (5!) Future: UVES survey on short period SDSS/SEGUE pre-cvs (Winter 2009) Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
29 The End Claus Tappert (PUC) LTT 560 and Wind Accretion in Pre-CVs SOCHIAS, Jan 16, / 16
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