Table 1
CLOUDY physical model parameters and initial elemental abundance set for QU Vul epoch D550 (Schwarz 2002), RS Oph epoch D22 (Pandey et al. 2022), and V1716 Sco epoch D132.8 (Woodward et al. 2024).
| Parameter | QU Vul D550 | RS Oph D22 | V1716 Sco D132.8 |
|---|---|---|---|
| Temperature of central ionizing WD TBB (K) | 3.2 × 105 | 6.60 × 104 | 5.5 × 105 |
| Luminosity of central ionizing WD (erg s–1) | 3.7 × 1037 | 1.0 × 1037 | 3.16 × 1037 |
| Hydrogen density, n(H) (cm–3) | 5.6 × 106 | 0.35 × 1010(a), 1.77 × 108(b) | 7.08 × 107(a), 2.51 × 106(b) |
| Inner radius, rin (cm) | 4.7 × 1015 | 3.16 × 1014 | 1.02 × 1015 |
| Outer radius, rout (cm) | 2.3 × 1016 | 5.49 × 1014 | 2.17 × 1015 |
| Cylinder height, h (cm) | – | – | 2.24 × 1015 |
| α | –3 | –3 | –3 |
| Covering factor | 1.0 | 0.61(a), 0.39(b) | 0.5 |
| Filling factor, f(r) | 0.10 | 0.01 | 0.20(a), 0.80(b) |
| β | 0.0 | 0.0 | 0.0 |
Galactic cosmic-ray ionization rate,  (s–1) |
4.6 × 10–16 | 4.6 × 10–16 | 4.6 × 10–16 |
| Initial elemental abundance (with respect to total hydrogen nuclei) set | |||
| Species | QU Vul D5509* | RS Oph D22* | V1716 Sco D132.8 |
| He | 1.16 | 1.9 | 1.87 × 10–1 |
| C | 0.2 | – | 1.74 × 10–3 |
| N | 12 | 95 | 1.67 × 10–2 |
| O | 2.5 | 2.6 | 9.31 × 10–3 |
| Ne | 21.7 | – | 2.18 × 10–4 |
| Mg | 10 | – | 1.19 × 10–4 |
| Al | 53.3 | – | 1.69 × 10–5 |
| Si | 2.0 | – | 7.13 × 10–5 |
| Ar | 0.28 | – | – |
| Fe | 0.53 | 1.0 | 6.32 × 10–5 |
| S | – | – | 9.90 × 10–5 |
| Ca | – | – | 5.26 × 10–6 |
| P | – | – | 3.08 × 10–5 |
Notes. The initial elemental abundance set for QU Vul is considered by taking an average over all four epochs (D310, D470, D550, and D630; Schwarz 2002). The initial elemental abundances of the ejecta (only those that were observed) are noted. All other elements (without observed lines) are kept at their solar abundances (Grevesse & Noels 1993; Grevesse et al. 2010). (*)Relative to solar values. (a)High-density (“clump”) component of ejecta. (b)Low-density (“diffuse”) component of ejecta.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.