[vsnet-chat 1209] Deep-sky: IC 1613 Cepheid

[Taichi Kato <tkato>]

Deep-sky: IC 1613 Cepheid

   While checking my potential target list of the old times, I noticed the
extragalactic Cepheid which I considered a challenge for amateur visual
variable star observing.  The target is in IC 1613, the member of the Local
Group, and has a period of 146 days (remember the period-luminosity relation).

IC1613V45:

010500.7 +021043 (2000.0) DCEP 17.7 20.4 28058.3 146.35 38 K2I V22

    This object, well within the reach of modern CCDs, may be the most
distant Cepheid visible to human eyes through large telescopes.  Though M31
Cepheids are slightly more distant, the bright galaxy background may
interfere.  Won't someone try?

Regards,
Taichi Kato

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp