MASERS AS TRACERS OF ANGULAR MOMENTUM IN MOLECULAR OUTFLOWS

Diana V. López; Esteban D. Araya

Submitted January 11, 2023

Published 2023-01-25

Artículos

Vol. 25 No. 1 (2023): Tecnociencia

MASERS AS TRACERS OF ANGULAR MOMENTUM IN MOLECULAR OUTFLOWS

Diana V. López⁺⁻
Esteban D. Araya⁺⁻

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DOI: ND

Published: 2023-01-25

How to Cite

López, D. V. and Araya, E. D. (2023) “MASERS AS TRACERS OF ANGULAR MOMENTUM IN MOLECULAR OUTFLOWS”, Tecnociencia, 25(1), pp. 180–192. Available at: https://revistas.up.ac.pa/index.php/tecnociencia/article/view/3443 (Accessed: 23 November 2024).

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Abstract

The dissipation of angular momentum of collapsing molecular cores is a key component in the formation of stars. Previous observations have reported that highly collimated protostellar jets can remove angular momentum from low-mass protostars. In contrast, there is no clear evidence that this occurs for high-mass protostars. Here we report the results of developing a data analysis platform to investigate whether molecular masers in the outflows of two high-mass star forming regions, DR21(OH) and W75N(B), trace net angular momentum. No statistically significant evidence was found for masers to trace net angular momentum transfer in these regions. However, our results show that high-angular resolution observations of masers near high-mass protostars have the potential of revealing this phenomenon at scales similar to the specific angular momentum carried by planets in our Solar System.

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References

Araya, E., Kurtz, S., Hofner, P., & Hendrik, L. (2009). Radio continuum and methanol observations of DR21(OH). Astrophysical Journal, 698(1), 1321-1329.
Araya, E. D., Olmi, L., Morales Ortiz, J., Brown, J. E., Hofner, P., Kurtz, S., Linz, H., & Creech-Eakman, M. J. (2015). Formaldehyde masers: exclusive tracers of high-mass star formation. The Astrophysical Journal Supplement Series, 221(1), 10
Baart, E., Cohen, R., Davies, R., Norris, R., & Rowland, P. (1986). Merlin observations of oh outflow in W75N. Monthly Notices of the Royal Astronomical Society, 219, 145-155.
Carrasco-González, C., Torrelles, J.M., Cantó, J., Curiel, S., Surcis, G., Vlemmings, W.H.T., van Langevelde, H.J., Goddi, C., Anglada, G., Kim, S.-W., Kim, J.-S., & Gómez, J.F. (2015). Observing the onset of outflow collimation in a massive protostar. Science, 348, 114-117.
Haschick, A., Reid, M., Burke, B., Moran, J., & Miller, G. (1981). VLBI aperture synthesis observations of the oh maser source W75N. Astrophysical Journal, 244, 76-87.
Kogan, L., & Slysh, V. (1998). VLA imaging of class I methanol masers at 7 millimeters with angular resolution ~0".2. The Astrophysical Journal, 800-806.
Kurtz, S., Hofner, P., & Vargas Álvarez, C. (2004). A catalog of CH3OH 70 –61 A+ maser sources in massive star-forming regions. The Astrophysical Journal Supplement Series, 149-165.
Lee, C.-F., Ho, P., Zhi-Yun, L., Hirano, N., Zhang, Q., & Shang, H. (2017). A rotating protostellar jet launched from the innermost disk of HH212. Nature Astronomy, 1(1), 0152.
Motte, F., Bontemps, S., & Louvet, F. (2018). High-mass star and massive cluster formation in the milky way. Annual Review of Astronomy and Astrophysics, 56, 41-82.
Paulson, S. T., & Pandian, J. D. (2020). Probing the early phases of high-mass star formation with 6.7 GHZ methanol masers. Monthly Notices of the Royal Astronomical Society, 492(1), 1335-1347.
Saldaño, H. P. (2016). Propiedades físicas de núcleos pre-estelares masivos. Argentina: Universidad Nacional de Córdoba.
Torrelles, J., Gómez, J., & Rodríguez, L. (1997). A radio maser system in W75N(B) at a 200 Au scale: Exploring the H2O Jet. The Astrophysical Journal, 489(1), 744-752.