التفاصيل البيبلوغرافية
| العنوان: |
External UV Environments and Photoevaporating Protoplanetary Disks: Most Common UV Environment of Stellar Nurseries in the Solar Neighborhood - NGC 1977 |
| المؤلفون: |
Kim, Jinyoung Serena, Hartman, Peter, Haworth, Thomas, J., Fang, Min, Facchini, Stefano, Pascucci, Ilaria, Heo, Jeong-Eun |
| المساهمون: |
Brun, Allan Sacha, Bouvier, Jérôme, Petit, Pascal |
| المصدر: |
CS21, The 21st Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, Toulouse, France, 04-08 July 2022 |
| بيانات النشر: |
Zenodo |
| سنة النشر: |
2023 |
| المجموعة: |
Zenodo |
| مصطلحات موضوعية: |
Protoplanetary Disk, External Photoevaporation, Star and Planet Formation, Star Forming Environment |
| الوصف: |
External UV environments play a crucial role in star and planet formation and protoplanetary disk evolution. We discuss ranges of diverse UV environments for star forming regions, then focus on an intermediate UV environment (~3000 G0, where G0~1-2 for the local ISM FUV flux). We present up-to-date census and kinematic studies of photoevaporating protoplanetary disks (proplyds) in an intermediate radiation environment NGC 1977 in the Orion A cloud. Proplyds provide direct evidence of interplay between protoplanetary disks and UV radiation from massive O, B stars. These are excellent laboratories to study the effects radiation environment plays on planet forming disks. Theorists suggest that an intermediate UV environment such as in NGC 1977 is the most “common” star forming environment in the solar neighborhood. NGC 1977 is a sibling of the Orion Nebula Cluster (ONC) in Orion A cloud which has similar ages (1-2 Myr) as young stars in ONC. However, NGC 1977 provide a different star forming environment compared to ONC. NGC 1977 harbors the weakest UV environment to date, where proplyds have been identified around a B1V star, 42 Or. It harbors the second most number of known proplyds, after ONC, where 100s of proplyds have been found around a O6 star. Latest discovery of new proplyds in NGC 2024 covers more embedded and younger star forming region around B0.5 and O9 stars. To date, most known proplyd nurseries (NGC 1977, NGC 2024, ONC) are found in Orion Star Forming Regions. We show preliminary results from the latest spectroscopic observations, which are being analyzed to estimate accretion activity, winds, and jets for three proplyds in NGC 1977. We also used Gaia DR3 data and SDSS/APOGEE-2 radial velocity data to study kinematics of proplyds and YSOs to address lifetime problem of proplyds. In NGC 1977, YSOs and proplyds show similar proper motions, while the proper motion of 42 Ori (B1V) is different from the rest of YSOs suggesting that the ionizing source responsible for external photoevaporation of ... |
| نوع الوثيقة: |
conference object |
| اللغة: |
unknown |
| Relation: |
https://zenodo.org/communities/cs21; https://doi.org/10.5281/zenodo.7591726; https://doi.org/10.5281/zenodo.7591727; oai:zenodo.org:7591727 |
| DOI: |
10.5281/zenodo.7591727 |
| الاتاحة: |
https://doi.org/10.5281/zenodo.7591727 |
| Rights: |
info:eu-repo/semantics/openAccess ; Creative Commons Attribution 4.0 International ; https://creativecommons.org/licenses/by/4.0/legalcode |
| رقم الانضمام: |
edsbas.F96F4B98 |
| قاعدة البيانات: |
BASE |