Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Gilligan, Christina"'
Autor:
Gilligan, Christina K., Chaboyer, Brian, Marengo, Massimo, Mullen, Joseph P., Bono, Giuseppe, Braga, Vittorio F., Crestani, Juliana, Dall'Ora, Massimo, Fiorentino, Giuliana, Monelli, Matteo, Neeley, Jill R., Fabrizio, Michele, Martínez-Vázquez, Clara E., Thévenin, Frédéric, Sneden, Christopher
Accurate metallicities of RR Lyrae are extremely important in constraining period-luminosity-metallicity relationships (PLZ), particularly in the near-infrared. We analyse 69 high-resolution spectra of Galactic RR Lyrae stars from the Southern Africa
Externí odkaz:
http://arxiv.org/abs/2103.11012
Autor:
Mullen, Joseph P., Marengo, Massimo, Martínez-Vázquez, Clara E., Neeley, Jillian R., Bono, Giuseppe, Dall'Ora, Massimo, Chaboyer, Brian, Thévenin, Frédéric, Braga, Vittorio F., Crestani, Juliana, Fabrizio, Michele, Fiorentino, Giuliana, Gilligan, Christina K., Monelli, Matteo, Stetson, Peter B.
We present newly-calibrated period-$\phi_{31}$-[Fe/H] relations for fundamental mode RR Lyrae stars in the optical and, for the first time, mid-infrared. This work's calibration dataset provides the largest and most comprehensive span of parameter sp
Externí odkaz:
http://arxiv.org/abs/2103.09372
Autor:
Morokuma, Tomoki, Utsumi, Yousuke, Ohta, Kouji, Yamanaka, Masayuki, Kawabata, Koji S., Inoue, Yoshiyuki, Tanaka, Masaomi, Yoshida, Michitoshi, Itoh, Ryosuke, Sasada, Mahito, Tominaga, Nozomu, Mori, Hiroki, Kawabata, Miho, Nakaoka, Tatsuya, Chogi, Maiko, Abe, Taisei, Huang, Ruochen, Kawahara, Naoki, Kimura, Hiroki, Nagashima, Hiroki, Takagi, Kengo, Yamazaki, Yuina, Liu, Wei, Ohsawa, Ryou, Sako, Shigeyuki, Murata, Katsuhiro L., Morihana, Kumiko, Gilligan, Christina K., Isogai, Keisuke, Kimura, Mariko, Wakamatsu, Yasuyuki, Ohnishi, Ryuhei, Takayama, Masaki, Honda, Satoshi, Matsuoka, Yoshiki, Yamashita, Takuji, Nagataki, Shigehiro, Tanaka, Yasuyuki T.
We present our follow-up observations to search for an electromagnetic counterpart of the IceCube high-energy neutrino, IceCube-170922A. Monitoring observations of a likely counterpart, TXS 0506+056, are also described. First, we quickly took optical
Externí odkaz:
http://arxiv.org/abs/2011.04957
Autor:
Gilligan, Christina K., Chaboyer, Brian, Cummings, Jeffrey D., Mackey, Dougal, Cohen, Roger E., Geisler, Douglas, Grocholski, Aaron J., Parisi, M. C., Sarajedini, Ata, Ventura, Paolo, Villanova, Sandro, Yang, Soung-Chul
We examine four ancient Large Magellanic Cloud (LMC) globular clusters (GCs) for evidence of multiple stellar populations using the Advanced Camera for Surveys and Wide Field Camera 3 on the Hubble Space Telescope Programme GO-14164. NGC 1466, NGC 18
Externí odkaz:
http://arxiv.org/abs/2003.09473
Autor:
Kunder, Andrea, Tilton, Alex, Maertens, Dylon, Ogata, Jonathan, Nataf, David, Rich, R. Michael, Johnson, Christian I., Gilligan, Christina, Chaboyer, Brian
Radial velocities of fifteen double-mode bulge RR Lyrae (RR01) stars are presented, six of which belong to a compact group of RR01 stars in pulsation space, with the ratio of first-overtone period to fundamental-mode period, P_{fo}/P_{f}~0.74, and P_
Externí odkaz:
http://arxiv.org/abs/1905.03256
Autor:
Gilligan, Christina K., Chaboyer, Brian, Cummings, Jeffrey D., Mackey, Dougal, Cohen, Roger E., Geisler, Doug, Grocholski, Aaron J., Parisi, M. C., Sarajedini, Ata, Ventura, Paolo, Villanova, Sandro, Yang, Soung-Chul, Wagner-Kaiser, Rachel
We present a multiple population search in two old Large Magellanic Cloud (LMC) Globular Clusters, Hodge 11 and NGC 2210. This work uses data from the Advanced Camera for Surveys and Wide Field Camera 3 on the Hubble Space Telescope from programme GO
Externí odkaz:
http://arxiv.org/abs/1904.01434
The recent Gaia Data Release 1 of stellar parallaxes provides ample opportunity to find metal-poor main-sequence stars with precise parallaxes. We select 21 such stars with parallax uncertainties better than $\sigma_\pi/\pi\leq0.10$ and accurate abun
Externí odkaz:
http://arxiv.org/abs/1703.01915
Autor:
Gilligan, Christina1
Publikováno v:
MNASSA: Monthly Notes of the Astronomical Society of Southern Africa. Feb2022, Vol. 81 Issue 1/2, p12-15. 4p.
Akademický článek
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Autor:
Gilligan, Christina K, Chaboyer, Brian, Marengo, Massimo, Mullen, Joseph P, Bono, Giuseppe, Braga, Vittorio F, Crestani, Juliana, Dall'Ora, Massimo, Fiorentino, Giuliana, Monelli, Matteo, Neeley, Jill R, Fabrizio, Michele, Martínez-Vázquez, Clara E, Thévenin, Frédéric, Sneden, Christopher
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jun2021, Vol. 503 Issue 4, p4719-4733, 15p