论文标题
KKH 22，IC 342的第一个矮人球形卫星
KKH 22, the first dwarf spheroidal satellite of IC 342
论文作者
论文摘要
我们通过高级摄像头进行了观察，以在附近的矮人球形星系kkh的哈勃太空望远镜上进行调查，22 = Leda 2807114在大型螺旋星系IC 342附近。我们得出了使用3.12+-0.19 MPC的距离，使用了3.12+-0.19 MPC使用红色Giant分支（TRGB）。我们还使用6 M BTA光谱法测量了KKH22中球状簇的地层径向速度为 +30 +-10 km/s。 DSPH Galaxy KKH 22具有-12.19 mag的V波段绝对幅度，中央表面亮度MU_V，0 = 24.1 mag/sq.arcsec。 KKH 22的速度和距离都与DSPH星系在重力上与IC 342结合。附近的另一个Dir Galaxy KKH 34，低地中心速度+106 km/s的TRGB距离为7.28 +-0.36 MPC，在背景下为4.28 +-0.36 MPC，该速度为IC 342。 KKH 34具有-236+-26 km/s的令人惊讶的高阴性速度。
We present observations with the Advanced Camera for Surveys on the Hubble Space Telescope of the nearby dwarf spheroidal galaxy KKH 22 = LEDA 2807114 in the vicinity of the massive spiral galaxy IC 342. We derived its distance of 3.12+-0.19 Mpc using the tip of red giant branch (TRGB) method. We also used the 6 m BTA spectroscopy to measure a heliocentric radial velocity of the globular cluster in KKH22 to be +30+-10 km/s. The dSph galaxy KKH 22 has the V-band absolute magnitude of -12.19 mag and the central surface brightness mu_v,0 = 24.1 mag/sq.arcsec. Both the velocity and the distance of KKH 22 are consistent with the dSph galaxy being gravitationally bound to IC 342. Another nearby dIr galaxy, KKH 34, with a low heliocentric velocity of +106 km/s has the TRGB distance of 7.28+-0.36 Mpc residing in the background with respect to the IC 342 group. KKH 34 has a surprisingly high negative peculiar velocity of -236+-26 km/s.
