Infrared properties of Planetary Nebulae with PG1159 central stars
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915069314465792 |
|---|---|
| author | Muthumariappan, C. Khushbu, K. Kerni, V. |
| author_facet | Muthumariappan, C. Khushbu, K. Kerni, V. |
| contents | We study the properties of 26 PNe with PG1159-type central stars known till date and compare them with the properties of PNe having [WR], $wels$ and hydrogen-rich central stars published earlier. We use archival photometric measurements of $2MASS$ for near-IR analysis and $WISE$ and $IRAS$ data for mid- and far-IR analysis and derive the IR properties of PG1159-PNe. We analyze the IR colour-colour diagrams of PG1159-PNe and compare them with the other three groups of PNe. Similar to the [WR]-PNe, many PG1159-PNe also show large amount of near-IR emission from the hot-dust component but their AGB dust is relatively cooler. We also report here the dust colour temperatures, dust masses, dust-to-gas mass ratios, IR luminosities and IR excess of PG1159-PNe and plot them against their surface H$β$ brightness (age) and compare them with the distribution of other groups of PNe. The IR luminosity and dust temperature show strong correlation with surface H$β$ brightness, however, the dust-to-gas mass ratio and IR excess do not show any trend. While the mean dust mass has a lower value for PG1159-PNe, in compared to other groups, the average dust-to-gas mass ratio is found to be marginally larger for PG1159-PNe. An analysis of the number distribution of different groups of PNe against surface H$β$ brightness shows that a) younger [WR]-, $wels$- and normal-PNe have a similar distribution indicating that they all have evolved from the AGB in a similar way, b) while there is an overlap of surface H$β$ brightness between [WR]- and PG1159-PNe, showing an evolutionary connection between them, there exists a significant gap between the values derived for $wels$- and PG1159-PNe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_11721 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Infrared properties of Planetary Nebulae with PG1159 central stars Muthumariappan, C. Khushbu, K. Kerni, V. Solar and Stellar Astrophysics Astrophysics of Galaxies We study the properties of 26 PNe with PG1159-type central stars known till date and compare them with the properties of PNe having [WR], $wels$ and hydrogen-rich central stars published earlier. We use archival photometric measurements of $2MASS$ for near-IR analysis and $WISE$ and $IRAS$ data for mid- and far-IR analysis and derive the IR properties of PG1159-PNe. We analyze the IR colour-colour diagrams of PG1159-PNe and compare them with the other three groups of PNe. Similar to the [WR]-PNe, many PG1159-PNe also show large amount of near-IR emission from the hot-dust component but their AGB dust is relatively cooler. We also report here the dust colour temperatures, dust masses, dust-to-gas mass ratios, IR luminosities and IR excess of PG1159-PNe and plot them against their surface H$β$ brightness (age) and compare them with the distribution of other groups of PNe. The IR luminosity and dust temperature show strong correlation with surface H$β$ brightness, however, the dust-to-gas mass ratio and IR excess do not show any trend. While the mean dust mass has a lower value for PG1159-PNe, in compared to other groups, the average dust-to-gas mass ratio is found to be marginally larger for PG1159-PNe. An analysis of the number distribution of different groups of PNe against surface H$β$ brightness shows that a) younger [WR]-, $wels$- and normal-PNe have a similar distribution indicating that they all have evolved from the AGB in a similar way, b) while there is an overlap of surface H$β$ brightness between [WR]- and PG1159-PNe, showing an evolutionary connection between them, there exists a significant gap between the values derived for $wels$- and PG1159-PNe. |
| title | Infrared properties of Planetary Nebulae with PG1159 central stars |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2412.11721 |