ParticleEmitter.useWorldSpace

If enabled, the particles don't move when the emitter moves. If false, when you move the emitter, the particles follow it around.

JavaScripts

particleEmitter.useWorldSpace = true;

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void Awake() {
particleEmitter.useWorldSpace = true;
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def Awake():
particleEmitter.useWorldSpace = true