Table 1.
Evolutionary stages of DPV V4142 Sgr.
| Stage | Age (Myr) | M (M⊙) | R (R⊙) | Po (d) | Log T (K) | Ṁ (M⊙ yr−1) | Ev. process | |
|---|---|---|---|---|---|---|---|---|
| Donor | A | 0.000 | 3.5000 | 2.2246 | 15.0000 | 4.1325 | −3.9127E−12 | Zero Age Main Sequence (ZAMS) |
| B | 0.8910 | 3.4997 | 2.6004 | 15.0027 | 4.1130 | −3.6946E−12 | Terminal Age Main Sequences (TAMS) | |
| X1 | 138.0000 | 3.4995 | 2.9399 | 15.0045 | 4.1010 | −4.9005E−12 | Inversion of the 1H/4He ratio | |
| C | 278.5000 | 3.4930 | 7.2768 | 15.0456 | 3.9665 | −2.2170E−10 | Depletion of central hydrogen 1H | |
| D | 279.7160 | 3.4927 | 6.1764 | 15.0471 | 4.0229 | −1.3642E−10 | Size increase beyond the RL due to depletion of 1H | |
| E | 280.0550 | 3.4863 | 19.8061 | 14.9438 | 3.7316 | −3.7128E−06 | Initiation of mass transfer | |
| U1 | 280.1115 | 2.4907 | 11.8353 | 8.9929 | 3.6434 | −2.2477E−05 | Mass inversion | |
| F | 280.1337 | 1.9019 | 11.8784 | 10.7057 | 3.6265 | −2.9974E−05 | Minimum Roche lobe value | |
| G | 280.1578 | 1.1747 | 17.0432 | 24.0015 | 3.6119 | −2.1044E−05 | End of optically thick mass transfer (U2) | |
| X2 | 280.1676 | 1.0477 | 19.2030 | 30.6325 | 3.6463 | −7.7595E−06 | Current stage | |
| H | 280.9710 | 0.7026 | 30.2055 | 77.1262 | 3.7964 | −2.8307E−08 | End mass transfer stage | |
| I | 306.0468 | 0.6883 | 0.2368 | 7.5859 | 4.5723 | −3.7117E−10 | Helium depletion (4He) | |
| Gainer | ||||||||
| a | 0.000 | 1.5000 | 1.4857 | 15.000 | 3.8444 | −2.0314E−12 | Zero Age Main Sequence (ZAMS) | |
| b | 280.0550 | 1.5057 | 1.8255 | 14.9438 | 4.0391 | 3.6931E−06 | Initiation of mass accretion | |
| c | 280.0900 | 2.0795 | 16.6218 | 9.7658 | 3.8433 | 2.0099E−05 | Rejuvenation by hydrogen 1H | |
| U1 | 280.1115 | 2.4962 | 18.7188 | 8.9929 | 3.8588 | 2.2360E−05 | Mass inversion | |
| d | 280.1337 | 3.0818 | 18.0276 | 10.7057 | 3.9272 | 2.9817E−05 | Return to the Main Sequence (RMS) | |
| e | 280.1578 | 3.8052 | 10.4409 | 24.0015 | 4.0842 | 2.0936E−05 | Transition to the threshold of rejuvenated B type stars | |
| X2 | 280.1676 | 3.9316 | 6.3856 | 30.6325 | 4.1702 | 7.7184E−06 | Current stage | |
| f | 280.9710 | 4.2672 | 2.2439 | 77.1262 | 4.2185 | 4.8843E-09 | End of mass accretion and relocation to the MS | |
| g | 306.0468 | 4.2668 | 2.6559 | 7.5859 | 4.1957 | −2.0541E−11 | Second Main Sequence turnoff | |
Notes. Exploring the evolutionary stages of DPV V4142 Sgr: from the ZAMS to 4He depletion of the donor star. Detailed descriptions of key features are provided, along with corresponding ages measured in Mega years (Myr). Additionally, the threshold of rejuvenation for B-type stars is presented.
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.