turtlebot_apps and turtlebot-rviz-launchers package is not being located. What could be the reasons?

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I installed ROS (jade) and tried navigate and gazebo WORLD. Both were working fine. Then, somehow I had to reinstall ubuntu and reinstalled ROS. Since then, I am facing the problem given below. I installed ROS using link text .

baban@baban-H81M-DS2:~$ sudo apt-get install ros-jade-turtlebot-apps ros-jade-turtlebot-rviz-launchers

[sudo] password for baban: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package ros-jade-turtlebot-apps
E: Unable to locate package ros-jade-turtlebot-rviz-launchers


baban@baban-H81M-DS2:~$ sudo apt-get install ros-indigo-turtlebot-gazebo

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ros-indigo-turtlebot-gazebo : Depends: ros-indigo-gazebo-ros but it is not going to be installed
                               Depends: ros-indigo-kobuki-gazebo-plugins but it is not going to be installed
E: Unable to correct problems, you have held broken packages.