Gas Kinematics and Dynamics of Carina Pillars: A Case Study of G287.76-0.87
- Title
- Gas Kinematics and Dynamics of Carina Pillars: A Case Study of G287.76-0.87
- Creator
- Tung N.-D.; Tram L.N.; Soam A.; Reach W.T.; Das E.; Chambers E.; Mathew B.; Richter H.
- Description
- We study the kinematics of a pillar, namely G287.76-0.87, using three rotational lines of 12CO(5-4), 12CO(8-7), 12CO(11-10), and a fine structure line of [O i] 63 ?m in southern Carina observed by SOFIA/GREAT. This pillar is irradiated by the associated massive star cluster Trumpler 16, which includes ? Carina. Our analysis shows that the relative velocity of the pillar with respect to this ionization source is small, ?1 km s?1, and the gas motion in the tail is more turbulent than in the head. We also performed analytical calculations to estimate the gas column density in local thermal equilibrium (LTE) conditions, which yields N CO as (?0.2-5) 1017 cm?2. We further constrain the gass physical properties in non-LTE conditions using RADEX. The non-LTE estimations result in n H 2 ? 10 5 cm ? 3 and N CO ? 1016 cm?2. We found that the thermal pressure within the G287.76-0.87 pillar is sufficiently high to make it stable for the surrounding hot gas and radiation feedback if the winds are not active. While they are active, stellar winds from the clustered stars sculpt the surrounding molecular cloud into pillars within the giant bubble around ? Carina. 2024. The Author(s). Published by the American Astronomical Society.
- Source
- Astrophysical Journal, Vol-969, No. 2
- Date
- 2024-01-01
- Publisher
- Institute of Physics
- Coverage
- Tung N.-D., University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Viet Nam, Universitde Strasbourg, CNRS, Observatoire astronomique de Strasbourg, UMR 7550, 11 rue de lUniversit Strasbourg, 67000, France, UniversitParis Cit UniversitParis-Saclay, CEA, CNRS, AIM, Gif-sur-Yvette, F-91191, France; Tram L.N., Max-Planck-Institut f Radioastronomie, Auf dem Hel 69, Bonn, 53-121, Germany; Soam A., Indian Institute of Astrophysics, II Block Koramangala, Bengaluru, 560034, India, SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center, Moffett Field, 94035, CA, United States; Reach W.T., SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center, Moffett Field, 94035, CA, United States, Space Science Institute, 4765 Walnut Street, STE B, Boulder, 80301, CO, United States; Das E., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bangalore, 560034, India; Chambers E., SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center, Moffett Field, 94035, CA, United States, Space Science Institute, 4765 Walnut Street, STE B, Boulder, 80301, CO, United States; Mathew B., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bangalore, 560034, India; Richter H., German Aerospace Center (DLR), Institute of Optical Sensor Systems, Rutherfordstra 2, Berlin, 12489, Germany
- Rights
- All Open Access; Gold Open Access; Green Open Access
- Relation
- ISSN: 0004637X
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Tung N.-D.; Tram L.N.; Soam A.; Reach W.T.; Das E.; Chambers E.; Mathew B.; Richter H., “Gas Kinematics and Dynamics of Carina Pillars: A Case Study of G287.76-0.87,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/12999.