Changes between Version 1 and Version 2 of u/JCSep0612

Timestamp:

09/06/12 15:11:04 (12 years ago)

Author:

Jonathan

Comment:

—

u/JCSep0612

@@ -5 +5 @@
 
 == Background ==
- * Investigate interaction of strong flux of IR (irradiation) with MCs (Molecular Clouds)
+ * Investigate interaction of strong flux of IR (ionizing radiation) with MCs (Molecular Clouds)
  * Secondary star formation
  * '''Small''' molecular clouds can undergo ''radiation driven implosion''
@@ -20 +20 @@
 
 == Initial conditions ==
- * mass = 400 solar masses
+ * mass = 400 solar masses  
  * radius = 1 pc
- * density = 1.6 x 10^4^/cm^3^ (uniform)
- * T=20 K
+ * density = 4.9 x 10^3^/cm^3^ (uniform)
+ * T=20 K 
  * Mach 10 Guassian velocity field with steep power-spectrum [[latex($P(k) \propto k^{-4}$)]] from wave numbers 1 to 8 (but no units :| )
- * [[latex($t_{ff} = .27 \mbox{Myr}$)]]
+ * [[latex($t_{ff} = .8 \mbox{Myr}$)]] although they quote [[latex($.27 \mbox{Myr}$)]] which might be the dynamical time...?
+ * Jeans length ~ .34 pc
+ * Jeans mass ~ 2 solar masses
+ * So box has 200 jeans masses and a virial parameter of 8 ~ [[latex($\left ( \frac{M\lambda_J}{R} \right ) ^2$)]]?
+
+
 
 == Evolution ==
- * Simulation was run for [[latex($.2 t_{ff}$)]]
+ * Simulation was run for .05 Myr and then used as a starting point for runs with irradiation
+
+-------------
+[[Image(JCSep6_1.png)]]
+--------------
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+|| 1 || No ionizing radiation ||
+|| 2 || 36,000 K ||
+|| 3 || 47,000 K ||
+|| 4 || 51,000 K ||
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+||  .25 Myr  ||  .24 Myr  ||
+|| [[Image(JCSep6_1b.png, width=400)]] || [[Image(JCSep6_2.png, width=400)]] ||
+||  .20 Myr  ||  .1 Myr  ||
+|||| [[Image(JCSep6_3.png, width=800)]] ||
+
+-------
+
+[[Image(JCSep6_4.png)]]
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+[[Image(JCSep6_6.png)]]
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+== Conclusions ==
+
+* Turbulence was injected by radiation driven shocks
+* Stronger radiation => stronger turbulence => faster evolution time => earlier star formation