Zobrazeno 1 - 10
of 48 242
pro vyhledávání: '"Molecular cloud"'
The extinction curve of interstellar dust in the dense molecular cloud cores is crucial for understanding dust properties, particularly size distribution and composition. We investigate the infrared extinction law in four nearby isolated molecular cl
Externí odkaz:
http://arxiv.org/abs/2411.00619
Autor:
Nonhebel, M., Barnes, A. T., Immer, K., Armijos-Abendaño, J., Bally, J., Battersby, C., Burton, M. G., Butterfield, N., Colzi, L., García, P., Ginsburg, A., Henshaw, J. D., Hu, Y., Jiménez-Serra, I., Klessen, R. S., Kruijssen, J. M. D., Liang, F. -H., Longmore, S. N., Lu, X., Martín, S., Mills, E. A. C., Nogueras-Lara, F., Petkova, M. A., Pineda, J. E., Rivilla, V. M., Sánchez-Monge, Á., Santa-Maria, M. G., Smith, H. A., Sofue, Y., Sormani, M. C., Tolls, V., Walker, D. L., Wallace, J., Wang, Q. D., Williams, G. M., Xu, F. -W.
The Milky Way's Central Molecular Zone (CMZ) differs dramatically from our local solar neighbourhood, both in the extreme interstellar medium conditions it exhibits (e.g. high gas, stellar, and feedback density) and in the strong dynamics at play (e.
Externí odkaz:
http://arxiv.org/abs/2409.12185
Autor:
Chen, Michael Chun-Yuan, Di Francesco, James, Friesen, Rachel K., Pineda, Jaime E., Caselli, Paola, Ginsburg, Adam, Kirk, Helen, Punanova, Anna, Collaboration, the GAS
Observations suggest that filaments in molecular clouds can grow by mass accretion while forming cores via fragmentation. Here we present one of the first large sample studies of filament accretion using velocity gradient measurements of star-forming
Externí odkaz:
http://arxiv.org/abs/2410.16372
Autor:
Feng, Haoran, Chen, Zhiwei, Jiang, Zhibo, Ma, Yuehui, Yang, Yang, Yu, Shuling, Ge, Dongqing, Zhou, Wei, Du, Fujun, Wang, Chen, Zhang, Shiyu, Su, Yang, Yang, Ji
Structures in molecular ISM are observed to follow a power-law relation between the velocity dispersion and spatial size, known as Larson's first relation, which is often attributed to the turbulent nature of molecular ISM and imprints the dynamics o
Externí odkaz:
http://arxiv.org/abs/2410.15034
The increasingly large number of complex organic molecules detected in the interstellar medium necessitates robust kinetic models that can be relied upon for investigating the involved chemical processes. Such models require rate constants for each o
Externí odkaz:
http://arxiv.org/abs/2410.09212
Observations indicate that dense molecular filamentary clouds are sites of star formation. The filament width determines the fragmentation scale and influences the stellar mass. Therefore, understanding the evolution of filaments and the origin of th
Externí odkaz:
http://arxiv.org/abs/2410.04455
Cold ($\sim$10 K) and dense ($\sim$10$^{5}$ cm$^{-3}$) cores of gas and dust within molecular clouds, known as starless and dynamically evolved prestellar cores, are the birthplaces of low-mass ($M$ $\leq$ few M$_\odot$) stars. As detections of inter
Externí odkaz:
http://arxiv.org/abs/2408.11613
Autor:
Alfaro, R., Alvarez, C., Arteaga-Velázquez, J. C., Rojas, D. Avila, Solares, H. A. Ayala, Babu, R., Belmont-Moreno, E., Bernal, A., Caballero-Mora, K. S., Capistrán, T., Carramiñana, A., Casanova, S., Cotti, U., Cotzomi, J., de León, S. Coutiño, De la Fuente, E., de León, C., Depaoli, D., Desiati, P., Di Lalla, N., Hernandez, R. Diaz, Dingus, B. L., DuVernois, M. A., Engel, K., Ergin, T., Espinoza, C., Fan, K. L., Fang, K., Fraija, N., Fraija, S., García-González, J. A., Garfias, F., González, M. M., Goodman, J. A., Groetsch, S., Harding, J. P., Hernández-Cadena, S., Herzog, I., Hinton, J., Huang, D., Hueyotl-Zahuantitla, F., Humensky, T. B., Hüntemeyer, P., Kaufmann, S., Kieda, D., Lee, W. H., Lee, J., Vargas, H. León, Linnemann, J. T., Longinotti, A. L., Luis-Raya, G., Malone, K., Martinez, O., Martínez-Castro, J., Matthews, J. A., Miranda-Romagnoli, P., Montes, J. A., Moreno, E., Mostafá, M., Nellen, L., Nisa, M. U., Olivera-Nieto, L., Omodei, N., Araujo, Y. Pérez, Pérez-Pérez, E. G., Rho, C. D., Rosa-González, D., Salazar, H., Salazar-Gallegos, D., Sandoval, A., Schneider, M., Serna-Franco, J., Smith, A. J., Son, Y., Springer, R. W., Tibolla, O., Tollefson, K., Torres, I., Torres-Escobedo, R., Turner, R., Ureña-Mena, F., Varela, E., Villaseñor, L., Wang, X., Wang, Z., Watson, I. J., Willox, E., Yu, S., Yun-Cárcamo, S., Zhou, H.
Publikováno v:
A&A 691, A89 (2024)
Supernova remnants (SNRs) are believed to be capable of accelerating cosmic rays (CRs) to PeV energies. SNR G106.3+2.7 is a prime PeVatron candidate. It is formed by a head region, where the pulsar J2229+6114 and its boomerang-shaped pulsar wind nebu
Externí odkaz:
http://arxiv.org/abs/2407.10729
Publikováno v:
A&A 689, A3 (2024)
Recent studies suggest that filamentary structures are representative of the initial conditions of star formation in molecular clouds and support a filament paradigm for star formation, potentially accounting for the origin of the stellar initial mas
Externí odkaz:
http://arxiv.org/abs/2406.08004
Mapping and characterizing magnetic fields in the Rho Ophiuchus-A molecular cloud with SOFIA/HAWC$+$
Autor:
Lê, Ngân, Tram, Le Ngoc, Karska, Agata, Hoang, Thiem, Diep, Pham Ngoc, Hanasz, Michał, Ngoc, Nguyen Bich, Phuong, Nguyen Thi, Menten, Karl M., Wyrowski, Friedrich, Nguyen, Dieu D., Hoang, Thuong Duc, Khang, Nguyen Minh
Publikováno v:
A&A 690, A191 (2024)
(abridged) Together with gravity, turbulence, and stellar feedback, magnetic fields (B-fields) are thought to play a critical role in the evolution of molecular clouds and star formation processes. We aim to map the morphology and measure the strengt
Externí odkaz:
http://arxiv.org/abs/2408.17122