With 1k Ω in series with 15Ω the current from AREF would be 1.1V / 1015Ω = 1.08mA. May be OK?
Only 15 ADC counts @ 15Ω, lousy resolution. 450Ω would be about 0.76mA, 0.341V and 317 counts, lousy linearity. 
Unconventional, but if it works? Connect your voltmeter to AREF and watch the voltage as you warm the sensor up, if it starts falling, abandon.