Auditing Database Objects Drop/Create Using Default Trace.

First find out the Default Trace File for your server.

SELECT * FROM ::fn_trace_getinfo(0)

Then Query the Trace File

SELECT  

 loginname, 

 loginsid, 

 spid, 

 hostname, 

 applicationname, 

 servername, 

 databasename, 

 objectName, 

 e.category_id, 

 cat.name , 

 textdata, 

 starttime, 

 eventclass, 

 eventsubclass,

 e.name as EventName

FROM ::fn_trace_gettable('G:\SQLLog\LOG\log_115.trc',0)     /* Give your trace file here */

INNER JOIN sys.trace_events e      

ON eventclass = trace_event_id 

INNER JOIN sys.trace_categories AS cat      

ON e.category_id = cat.category_id

WHERE databasename = 'master' AND

 --objectname IS NULL AND /* filter by objectname if needed */

 e.category_id = 5 AND /* 5 is objects     */

 e.trace_event_id = 47  /* 46=Create Obj,47=Drop Obj,164=Alter Obj */