Zobrazeno 1 - 10
of 493
pro vyhledávání: '"Tian, Z. J."'
Autor:
Liu, G. -C., Huang, Y., Zhang, H. -W., Xiang, M. -S., -J., J., Ren, Chen, B. -Q., Yuan, H. -B., Wang, C., Yang, Y., Tian, Z. -J., Wang, F., Liu, X. -W.
We present a catalog of 5,290 RR Lyrae stars (RRLs) with metallicities estimated from spectra of the LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) and the Sloan Extension for Galactic Understanding and Exploration (SEGUE) surve
Externí odkaz:
http://arxiv.org/abs/2002.01188
Autor:
Chen, B. -Q., Li, G. -X., Yuan, H. -B., Huang, Y., Tian, Z. -J., Wang, H. -F., Zhang, H. -W., Wang, C., Liu, X. -W.
We present a large, homogeneous catalogue of molecular clouds within 4 kpc from the Sun at low Galactic latitudes ($|b|$ $<$ 10\degr) with unprecedented accurate distance determinations. Based on the three-dimensional dust reddening map and estimates
Externí odkaz:
http://arxiv.org/abs/2001.11682
According to \emph{Wind} observations between June 2004 and May 2019, this Letter investigates the proton and alpha particle temperatures in the space of ($\theta_d$, $V_d/V_A$) for the first time, where $\theta_d$ and $V_d$ are the radial angle and
Externí odkaz:
http://arxiv.org/abs/2001.07172
Autor:
Miao, Yuhu, Liu, Y., Shen, Y. D., Elmhamdi, A., Kordi, A. S., Li, H. B., Abidin, Z. Z., Tian, Z. J.
In this paper,we report a detailed analysis of recurrent jets originated from a location with emerging, canceling and converging negative magnetic field at the east edge of NOAA active region AR11166 from 2011 March 09 to 10. The event presented seve
Externí odkaz:
http://arxiv.org/abs/1904.05496
Autor:
Wang, J. M., Feng, H. Q., Li, H. B., Zhao, A. K., Tian, Z. J., Zhao, G. Q., Zhao, Y., Liu, Q.
Previous studies indicate that interplanetary small magnetic flux ropes (SMFRs) are manifestations of microflare-associated small coronal mass ejections (CMEs), and the hot material with high charge states heated by related microflares are found in S
Externí odkaz:
http://arxiv.org/abs/1903.11218
Autor:
Wang, C., Huang, Y., Yuan, H. -B., Xiang, M. -S., Chen, B. -Q., Wang, H. -F., Wu, Y. -Q., Zhang, H. -W., Tian, Z. -J., Yang, Y., Zhang, M., Liu, X. -W.
We have investigated the distributions of stellar azimuthal and radial velocity components $V_{\Phi}$ and $V_{R}$ in the vertical position-velocity plane $Z$-$V_{Z}$ across the Galactic disc of $6.34 \lesssim R \lesssim 12.34$\,kpc and $|\Phi| \lesss
Externí odkaz:
http://arxiv.org/abs/1903.09982
Autor:
Wang, C., Liu, X. -W., Xiang, M. -S., Huang, Y., Chen, B. -Q., Yuan, H. -B., Ren, J. -J., Zhang, H. -W., Tian, Z. -J.
We have investigated the metallicity distributions of mono-age stellar populations across the disc of $6 \lesssim R \lesssim 12$\,kpc and $|Z| \lesssim 2$\,kpc using samples selected from the main-sequence turn-off and sub-giant (MSTO-SG) stars targe
Externí odkaz:
http://arxiv.org/abs/1810.05958
Autor:
Chen, B. -Q., Huang, Y., Yuan, H. -B., Wang, C., Fan, D. -W., Xiang, M. -S., Zhang, H. -W., Tian, Z. -J., Liu, X. -W.
We present new three-dimensional (3D) interstellar dust reddening maps of the Galactic plane in three colours, E(G-Ks), E(Bp-Rp) and E(H-Ks). The maps have a spatial angular resolution of 6 arcmin and covers over 7000 deg$^2$ of the Galactic plane fo
Externí odkaz:
http://arxiv.org/abs/1807.02241
Autor:
Chen, B. -Q., Liu, X. -W., Yuan, H. -B., Xiang, M. -S., Huang, Y., Wang, C., Zhang, H. -W., Tian, Z. -J.
We present a detailed analysis of the selection function of the LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC). LSS-GAC was designed to obtain low resolution optical spectra for a sample of more than 3 million stars in the Galactic
Externí odkaz:
http://arxiv.org/abs/1802.06777
The sky brightness is a critical parameter for estimating the coronal observation conditions for solar observatory. As part of a site-survey project in Western China, we measured the sky brightness continuously at the Lijiang Observatory in Yunnan pr
Externí odkaz:
http://arxiv.org/abs/1709.02053