(Table \[tab:newJHK\]; and see also Figure \[fig:LCs\]). By combining the new data with the previous data, we obtained more precise periods (Table \[tab:obj\]) with a longer baseline, and can more accurately estimate the pulsational phases at which the following spectroscopic observations were made.

![ $H$-band light curves of the target Cepheids. Magnitudes of [GCC-a]{}, -b, and -c in June 2010 and July 2012 are indicated by open triangles and open circles, respectively. The photometric data in @Matsunaga-2013 are also included. Vertical dotted lines indicate the dates (YY-MM-DD) and phases of the IRCS spectroscopic observations (see Tables \[tab:log\] and \[tab:vel\]). \[fig:LCs\]](fig1.ps){width="0.98\hsize"}

[cccrrr]{} & 17:46:06.01 & $-$28:46:55.1 & $+$0.186 & $-$0.009 & 23.528\
[GCC-b]{} & 17:45:32.27 & $-$29:02:55.2 & $-$0.105 & $-$0.043 & 19.942\
[GCC-c]{} & 17:45:30.89 & $-$29:03:10.5 & $-$0.112 & $-$0.041 & 22.755\
[GCC-d]{} & 17:44:56.90 & $-$29:13:33.7 & $-$0.324 & $-$0.026 & 18.886

[cccccccc]{} 2454172.62180 & 54172.12153 & 15.63 & 0.05 & 12.10 & 0.01 & 10.33 & 0.03\
2454220.48339 & 54219.97875 & 15.71 & 0.11 & 12.08 & 0.01 & 10.27 & 0.01\
2454224.47362 & 54223.96870 & 15.87 & 0.08 & 12.12 & 0.01 & 10.33 & 0.01\
2454231.50812 & 54231.00275 & 15.35 & 0.07 & 12.02 & 