little h and vacum simulations

From: Pedro Colin <>
Date: Wed, 23 Nov 2005 06:43:31 -0600 (CST)


I am running an isolated model galaxy composed of a halo plus a disk using
Gadget. I am using the units described in the Gadget manual, namely,
UnitLength_in_cm 3.085678e21, UnitMass_in_g 1.989e43, etc. The manual
says that the above choice sets the length unit to 1.0 kpc/h, etc., but
what does h mean in this context?

Best regards,

Pedro Colin
Received on 2005-11-23 17:59:08

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