Zobrazeno 1 - 10
of 898
pro vyhledávání: '"Tang X. D."'
Autor:
Zhao, X., Tang, X. D., Henkel, C., Gong, Y., Lin, Y., Li, D. L., He, Y. X., Ao, Y. P., Lu, X., Liu, T., Sun, Y., Wang, K., Chen, X. P., Esimbek, J., Zhou, J. J., Wu, J. W., Qiu, J. J., Zheng, X. W., Li, J. S., Luo, C. S., Zhao, Q.
Publikováno v:
A&A 687, A207 (2024)
The kinetic temperature structure of the massive filament DR21 has been mapped using the IRAM 30 m telescope. This mapping employed the para-H$_2$CO triplet ($J_{\rm K_aK_c}$ = 3$_{03}$--2$_{02}$, 3$_{22}$--2$_{21}$, and 3$_{21}$--2$_{20}$) on a scal
Externí odkaz:
http://arxiv.org/abs/2405.18767
Autor:
Gong, Y., Henkel, C., Menten, K. M., Chen, C. -H. R., Zhang, Z. Y., Yan, Y. T., Weiss, A., Langer, N., Wang, J. Z., Mao, R. Q., Tang, X. D., Yang, W., Ao, Y. P., Wang, M.
Publikováno v:
A&A 679, L6 (2023)
Sulfur isotope ratios have emerged as a promising tool for tracing stellar nucleosynthesis, quantifying stellar populations, and investigating the chemical evolution of galaxies. While extensively studied in the Milky Way, in extragalactic environmen
Externí odkaz:
http://arxiv.org/abs/2309.15155
Autor:
Gong, Y., Du, F. J., Henkel, C., Jacob, A. M., Belloche, A., Wang, J. Z., Menten, K. M., Yang, W., Quan, D. H., Bop, C. T., Ortiz-León, G. N., Tang, X. D., Rugel, M. R., Liu, S.
Publikováno v:
A&A 679, A39 (2023)
Protonated hydrogen cyanide, HCNH$^{+}$, plays a fundamental role in astrochemistry because it is an intermediary in gas-phase ion-neutral reactions within cold molecular clouds. However, the impact of the environment on the chemistry of HCNH$^{+}$ r
Externí odkaz:
http://arxiv.org/abs/2308.15521
Autor:
Fang X., Tan W. P., Beard M., deBoer R. J., Gilardy G., Jung H., Liu Q., Lyons S., Robertson D., Setoodehnia K., Seymour C., Stech E., Vande Kolk B., Wiescher M., de Souza R., Hudan S., Singh V., Tang X. D., Uberseder E.
Publikováno v:
EPJ Web of Conferences, Vol 178, p 04008 (2018)
The total cross sections of the 12C+16O fusion have been experimentally determined at low energies to investigate the role of this reaction during late stellar evolution burning phases. A high-intensity oxygen beam was produced by the 5MV pelletron a
Externí odkaz:
https://doaj.org/article/53d5083c493e4690b3bf7b07b9007718
Autor:
Gao, B., Jiao, T. Y., Li, Y. T., Chen, H., Lin, W. P., An, Z., Ru, L. H., Zhang, Z. C., Tang, X. D., Wang, X. Y., Zhang, N. T., Fang, X., Xie, D. H., Fan, Y. H., Ma, L., Zhang, X., Bai, F., Wang, P., Fan, Y. X., Liu, G., Huang, H. X., Wu, Q., Zhu, Y. B., Chai, J. L., Li, J. Q., Sun, L. T., Wang, S., Cai, J. W., Li, Y. Z., Su, J., Zhang, H., Li, Z. H., Li, Y. J., Li, E. T., Chen, C., Shen, Y. P., Lian, G., Guo, B., Li, X. Y., Zhang, L. Y., He, J. J., Sheng, Y. D., Chen, Y. J., Wang, L. H., Zhang, L., Cao, F. Q., Nan, W., Nan, W. K., Li, G. X., Song, N., Cui, B. Q., Chen, L. H., Ma, R. G., Yan, S. Q., Liao, J. H., Wang, Y. B., Zeng, S., Nan, D., Fan, Q. W., Qi, N. C., Sun, W. L., Guo, X. Y., Zhang, P., Chen, Y. H., Zhou, Y., Zhou, J. F., He, J. R., Shang, C. S., Li, M. C., Kubono, S., Liu, W. P., deBoer, R. J., Wiescher, M., Pignatari, M.
Publikováno v:
Physical Review Letters 129, 132701 (2022)
The $^{13}$C($\alpha$,$n$)$^{16}$O reaction is the main neutron source for the slow-neutron-capture (s-) process in Asymptotic Giant Branch stars and for the intermediate (i-) process. Direct measurements at astrophysical energies in above-ground lab
Externí odkaz:
http://arxiv.org/abs/2210.03222
Autor:
Chen, J. L., Zhang, J. S., Henkel, C., Yan, Y. T., Yu, H. Z., Qiu, J. J., Tang, X. D., Wang, J., Liu, W., Wang, Y. X., Zheng, Y. H., Zhao, J. Y., Zou, Y. P.
Our aim is to measure the interstellar 14N/15N ratio across the Galaxy, to establish a standard data set on interstellar ammonia isotope ratios, and to provide new constraints on the Galactic chemical evolution. The (J, K ) = (1, 1), (2, 2), and (3,
Externí odkaz:
http://arxiv.org/abs/2208.03977
Autor:
Li, Y. T., Lin, W. P., Gao, B., Chen, H., Huang, H., Huang, Y., Jiao, T. Y., Li, K. A., Tang, X. D., Wang, X. Y., Fang, X., Huang, H. X., Ren, J., Ru, L. H., Ruan, X. C., Zhang, N. T., Zhang, Z. C.
A low-background neutron detector array was developed to measure the cross section of the $^{13}$C($\alpha$,n)$^{16}$O reaction, which is the neutron source for the $s$-process in AGB stars, in the Gamow window ($E_{c.m.}$ = 190 $\pm$ 40 keV) at the
Externí odkaz:
http://arxiv.org/abs/2111.12552
Autor:
Tursun, K., Henkel, C., Esimbek, J., Tang, X. D., Wilson, T. L., Malawi, A., Alkhuja, E., Wyrowski, F., Mauersberger, R., Immer, K., Asiri, H., Zhou, J. J., Wu, G.
Publikováno v:
A&A 658, A34 (2022)
At a distance of 2.4kpc, W33 is an outstanding massive and luminous 10pc sized star forming complex containing quiescent infrared dark clouds as well as highly active infrared bright cloud cores heated by young massive stars. We report measurements o
Externí odkaz:
http://arxiv.org/abs/2111.06200
Autor:
Yan, S. Q., Li, X. Y., Nishio, K., Lugaro, M., Li, Z. H., Makii, H., Pignatari, M., Wang, Y. B., Orlandi, R., Hirose, K., Tsukada, K., Mohr, P., Li, G. S., Wang, J. G., Gao, B. S., Han, Y. L., Guo, B., Li, Y. J., Shen, Y. P., Sato, T. K., Ito, Y., Suzaki, F., Su, J., Yang, Y. Y., Wang, J. S., Ma, J. B., Ma, P., Bai, Z., Xu, S. W., Ren, J., Fan, Q. W., Zeng, S., Han, Z. Y., Nan, W., Nan, W. K., Chen, C., Lian, G., Hu, Q., Duan, F. F., Jin, S. Y., Tang, X. D., Liu, W. P.
The long-lived $^{60}$Fe (with a half-life of 2.62 Myr) is a crucial diagnostic of active nucleosynthesis in the Milky Way galaxy and in supernovae near the solar system. The neutron-capture reaction $^{59}$Fe(n,$\gamma$)$^{60}$Fe on $^{59}$Fe (half-
Externí odkaz:
http://arxiv.org/abs/2109.12654
Autor:
Tang, X. D., Henkel, C., Menten, K. M., Gong, Y., Chen, C. -H. R., Li, D. L., Lee, M. -Y., Mangum, J. G., Ao, Y. P., Mühle, S., Aalto, S., García-Burillo, S., Martín, S., Viti, S., Muller, S., Costagliola, F., Asiri, H., Levshakov, S. A., Spaans, M., Ott, J., Impellizzeri, C. M. V., Fukui, Y., He, Y. X., Esimbek, J., Zhou, J. J., Zheng, X. W., Zhao, X., Li, J. S.
Publikováno v:
A&A 655, A12 (2021)
We mapped the kinetic temperature structure of two massive star-forming regions, N113 and N159W, in the Large Magellanic Cloud (LMC). We have used $\sim$1\hbox{$\,.\!\!^{\prime\prime}$}6\,($\sim$0.4\,pc) resolution measurements of the para-H$_2$CO\,$
Externí odkaz:
http://arxiv.org/abs/2108.10519