Zobrazeno 1 - 10
of 390
pro vyhledávání: '"Fehér, O."'
Autor:
Priestley, F. D., Clark, P. C., Glover, S. C. O., Ragan, S. E., Fehér, O., Prole, L. R., Klessen, R. S.
We present synthetic line observations of a simulated molecular cloud, utilising a self-consistent treatment of the dynamics and time-dependent chemical evolution. We investigate line emission from the three most common CO isotopologues ($^{12}$CO, $
Externí odkaz:
http://arxiv.org/abs/2406.06702
Recent advances in identifying giant molecular filaments in galactic surveys allow us to study the interstellar material and its dense, potentially star forming phase on scales comparable to resolved extragalactic clouds. Two large filaments detected
Externí odkaz:
http://arxiv.org/abs/2403.19269
Autor:
Priestley, F. D., Clark, P. C., Glover, S. C. O., Ragan, S. E., Fehér, O., Prole, L. R., Klessen, R. S.
Star formation activity in molecular clouds is often found to be correlated with the amount of material above a column density threshold of $\sim 10^{22} \, {\rm cm^{-2}}$. Attempts to connect this column density threshold to a ${\it volume}$ density
Externí odkaz:
http://arxiv.org/abs/2310.06037
Autor:
Priestley, F. D., Clark, P. C., Glover, S. C. O., Ragan, S. E., Fehér, O., Prole, L. R., Klessen, R. S.
Much of what we know about molecular clouds, and by extension star formation, comes from molecular line observations. Interpreting these correctly requires knowledge of the underlying molecular abundances. Simulations of molecular clouds typically on
Externí odkaz:
http://arxiv.org/abs/2307.13072
Autor:
Kóspál, Á., de Miera, F. Cruz-Sáenz, White, J. A., Ábrahám, P., Chen, L., Csengeri, T., Dong, R., Dunham, M. M., Fehér, O., Green, J. D., Hashimoto, J., Henning, Th., Hogerheijde, M., Kudo, T., Liu, H. B., Takami, M., Vorobyov, E. I.
FU Orionis-type objects (FUors) are low-mass pre-main sequence stars undergoing a temporary, but significant increase of mass accretion rate from the circumstellar disk onto the protostar. It is not yet clear what triggers the accretion bursts and wh
Externí odkaz:
http://arxiv.org/abs/2106.14409
Autor:
White, Jacob Aaron, Tapia-Vázquez, F., Hughes, A. G., Moór, A., Matthews, B., Wilner, D., Aufdenberg, J., Fehér, O., Hughes, A. M., De la Luz, V., McNaughton, A., Zapata, L. A.
The radio spectra of main-sequence stars remain largely unconstrained due to the lack of observational data to inform stellar atmosphere models. As such, the dominant emission mechanisms at long wavelengths, how they vary with spectral type, and how
Externí odkaz:
http://arxiv.org/abs/2104.09332
Autor:
Kim, Gwanjeong, Tatematsu, Kenichi, Liu, Tie, Yi, Miss Hee-Weon, He, Jinhua, Hirano, Naomi, Liu, Sheng-Yuan, Choi, Minho, Sanhueza, Patricio, Toth, L. Viktor, Evans, Neal J., Feng, Siyi, Juvela, Mika, Kim, Kee-Tae, Vastel, Charlotte, Lee, Jeong-Eun, Nguyn-Lu'o'ng, Quang, Kang, Miju, Ristorcelli, Isabelle, Fehér, O., Wu, Yuefang, Ohashi, Satoshi, Wang, Ke, Kandori, Ryo, Hirota, Tomoya, Sakai, Takeshi, Lu, Xing, Thompson, Mark A., Fuller, Gary A., Li, Di, Shinnaga, Hiroko, Kim, Jungha
We present the results of a single-pointing survey of 207 dense cores embedded in Planck Galactic Cold Clumps distributed in five different environments ($\lambda$ Orionis, Orion A, B, Galactic plane, and high latitudes) to identify dense cores on th
Externí odkaz:
http://arxiv.org/abs/2007.12319
Publikováno v:
Origins: From the Protosun to the First Steps of Life, Proceedings of the International Astronomical Union, 2020, Volume 345, pp. 87-90
The earliest phases of star formation are characterised by intense mass accretion from the circumstellar disk to the central star. One group of young stellar objects, the FU Orionis-type stars exhibit accretion rate peaks accompanied by bright erupti
Externí odkaz:
http://arxiv.org/abs/2101.09204
Publikováno v:
Origins: From the Protosun to the First Steps of Life. Proceedings of the International Astronomical Union, Volume 345, pp. 320-321 (2020)
Having disk-to-star accretion rates on the order of 10$^{-4}\,M_{\odot}$/yr, FU Orionis-type stars (FUors) are thought to be the visible examples for episodic accretion. FUors are often surrounded by massive envelopes, which replenish the disk materi
Externí odkaz:
http://arxiv.org/abs/2002.04342
Autor:
White, Jacob Aaron, Kóspál, Á., Rab, C., Ábrahám, P., de Miera, F. Cruz-Sáenz, Csengeri, T., Fehér, O., Güsten, R., Henning, T., Vorobyov, E., Audard, M., Postel, A.
The accretion-driven outbursts of young FU Orionis-type stars may be a common stage of pre-main sequence evolution and can have a significant impact on the circumstellar environment as it pertains to the growth of solids and eventually planets. This
Externí odkaz:
http://arxiv.org/abs/1904.07269