Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Distraction
Airspace Violation All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural FAR
General None Reported / Taken
Procedure; Human Factors
On the DFW HRPER departure two hours after sunrise; at about 9000 feet; the First Officer asked if I saw an object go by at close range.  I did not.  I asked him if it was an airplane.  He said no.  I asked if it was a balloon.  He said no.  I asked if it was a drone.  He said it could be.  He then notified ATC.  The flight continued uneventfully.
An air carrier aircraft departed on the DFW HRPER2 Departure (RNAV) mid-morning and at 9;000 feet the First Officer saw an object believed to be a drone pass by at a close range. The flying Captain did not take evasive action.