Zobrazeno 1 - 10
of 254
pro vyhledávání: '"Fu J. N."'
Autor:
Frasca, A., Molenda-Zakowicz, J., Alonso-Santiago, J., Catanzaro, G., De Cat, P., Fu, J. N., Zong, W., Wang, J. X., Cang, T., Wang, J. T.
Publikováno v:
A&A 664, A78 (2022)
In this work we present the results of our analysis of 16,300 medium-resolution LAMOST spectra of late-type stars in the Kepler field with the aim of determining the stellar parameters, activity level, lithium atmospheric content, and binarity. We ha
Externí odkaz:
http://arxiv.org/abs/2205.04757
Autor:
Mukadam A. S., Kepler S. O., Winget D. E., Nather R. E., Kilic M., Mullally F., Hippel T. von, Kleinman S. J., Nitta A., Guzik J. A., Bradley P. A., Matthews J., Sekiguchi K., Sullivan D. J., Shobbrook R. R., Birch P., Jiang X. J., Xu D. W., Joshi S., Ashoka B.N., Ibbetson P., Leibowitz E., Ofek E. O., Meištas E. G., Janulis R., Ališauskas D., Kalytis R., Handler G., Kilkenny D., O’Donoghue D., Kurtz D. W., Müller M., Moskalik P., Ogłoza W., Zoła S., Krzesiński J., Johannessen F., Gonzalez-Perez J. M., Solheim J-E., Silvotti R., Bernabei S., Vauclair G., Dolez N., Fu J. N., Chevreton M., Manteiga M., Súarez O., Ulla A., Cunha M. S., Metcalfe T. S., Kanaan A., Fraga L., Costa A. F. M., Giovannini O., Fontaine G., Bergeron P., O’Brien M. S., Sanwal D., Wood M. A., Ahrens T. J., Silvestri N., Klumpe E. W., Kawaler S. D., Riddle R., Reed M. D., Watson T. K.
Publikováno v:
Open Astronomy, Vol 12, Iss 1, Pp 71-103 (2003)
We report our analysis of the stability of pulsation periods in the DAV star (pulsating hydrogen atmosphere white dwarf) ZZ Ceti, also called R548. Based on observations that span 31 years, we conclude that the period 213.132605 s observed in ZZ Ceti
Externí odkaz:
https://doaj.org/article/2f43468678c44bc7b5f349f3b424d8fd
Autor:
Duan, R. M., Zong, W., Fu, J. -N., Chen, Y. H., Hermes, J. J., Vanderbosch, Zachary P., Ma, X. Y., Charpinet, S.
We present analysis of a new pulsating helium-atmosphere (DB) white dwarf, EPIC~228782059, discovered from 55.1~days of {\em K2} photometry. The long duration, high quality light curves reveal 11 independent dipole and quadruple modes, from which we
Externí odkaz:
http://arxiv.org/abs/2108.13988
Autor:
Fu, J. N., De Cat, P., Zong, W., Frasca, A., Gray, R. O., Ren, A. B., Molenda-Żakowicz, J., Corbally, C. J., Catanzaro, G., Shi, J. R., Luo, A. L., Zhang, H. T.
The NASA $Kepler$ mission obtained long-term high-quality photometric observations for a large number of stars in its original field of view from 2009 to 2013. In order to provide reliable stellar parameters in a homogeneous way, the LAMOST telescope
Externí odkaz:
http://arxiv.org/abs/2008.10776
Autor:
Moździerski, D., Pigulski, A., Kołaczkowski, Z., Michalska, G., Kopacki, G., Carrier, F., Walczak, P., Narwid, A., Stęślicki, M., Fu, J. -N., Jiang, X. -J., Zhang, Ch., Jackiewicz, J., Telting, J., Morel, T., Saesen, S., Zahajkiewicz, E., Bruś, P., Śródka, P., Vučković, M., Verhoelst, T., Van Helshoecht, V., Lefever, K., Gielen, C., Decin, L., Vanautgaerden, J., Aerts, C.
Publikováno v:
A&A 632, A95 (2019)
Asteroseismology offers the possibility of probing stellar interiors and testing evolutionary and seismic models. Precise photometry and spectroscopy obtained during multi-site campaigns on young open clusters allows discovering rich samples of pulsa
Externí odkaz:
http://arxiv.org/abs/1910.11873
Autor:
Wang, R., Luo, A. -L., Chen, J. -J., Bai, Z. -R., Chen, L., Chen, X. -F., Dong, S. -B., Du, B., Fu, J. -N., Han, Z. -W., Hou, J. -L., Hou, Y. -H., Hou, W., Jiang, D. -K., Kong, X., Li, L. -F., Liu, C., Liu, J. -M., Qin, L., Shi, J. -R., Tian, H., Wu, H., Wu, C. -J., Xie, J. -W., Zhang, H. -T., Zhang, S., Zhao, G., Zhao, Y. -H., Zhong, J., Zong, W. -K., Zuo, F.
Publikováno v:
2019ApJS..244...27W
The radial velocity (RV) is a basic physical quantity which can be determined through Doppler shift of the spectrum of a star. The precision of RV measurement depends on the resolution of the spectrum we used and the accuracy of wavelength calibratio
Externí odkaz:
http://arxiv.org/abs/1908.04773
Autor:
Fu, J. -N., Vauclair, G., Su, J., Machado, L. Fox, Colas, F., Kim, S. -L., Cang, T. Q., Li, C., Niu, H. B., Xue, H. F., Li, Y., Jiang, X. -J., Michel, R., Alvarez, M., Dolez, N., Ma, L., Esamdin, A., Liu, J. Z.
An increasing number of white dwarf stars show atmospheric chemical composition polluted by heavy elements accreted from debris disk material. The existence of such debris disks strongly suggests the presence of one or more planet(s) whose gravitatio
Externí odkaz:
http://arxiv.org/abs/1904.07586
This paper presents a photometric and spectroscopic study of the short-period binary star Cl*~Melotte~111~AV~1224. Measurements in the $B$, $V$, and $R$ passbands obtained during three observing runs between 2014 and 2017 and medium-resolution spectr
Externí odkaz:
http://arxiv.org/abs/1808.02565
Autor:
Li, C., Fu, J. -N., Vauclair, G., Dolez, N., Fox-Machedo, L., Michel, R., Chavez, M., Bertone, E.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 449, Issue 4, p.3360-3369, 2015
Asteroseismology is a unique tool to explore the internal structure of stars through both observational and theoretical research. The internal structure of pulsating hydrogen shell white dwarfs (ZZ Ceti stars) detected by asteroseismology is regarded
Externí odkaz:
http://arxiv.org/abs/1709.09206
Autor:
Ren, A. B., Zhang, X. B., Fu, J. N., Zhang, Y. P., Cang, T. Q., Fox-Machado, L., Li, C. Q., Khokhuntod, P., Luo, Y. P.
Time-series, multi-color photometry and high-resolution spectra of the short period eclipsing binary V Tri were obtained by observations. The completely covered light and radial velocity curves of the binary system are presented. All times of light m
Externí odkaz:
http://arxiv.org/abs/1704.00852