Can anyone point me toward an article that converts the LST values on the MODIS LST Image to degrees Celsius?
My purpose is find a reference (article, book or theses) for this formula that converts DN to degree celsius
Your question is a little unclear, but I found this documentation
The Land Surface Temperature data is in degrees Kelvin. You can convert between Kelvin and Celsius through the formula below.
K − 273.15 = degC
EDIT: after review of other questions on the site (once the OP clarified that they are looking for a reference for multiplying LST by 0.2), I found this answer which referred to the MODIS LST User Guide:
How do I convert the LST values on the MODIS LST Image to degree celsius. The documentation referenced is the actual user guide for Modis LST. https://icess.eri.ucsb.edu/modis/LstUsrGuide/usrguide_mod11.html#sds
Per the linked post, Temperature in °C will be:
DN * 0.02 - 273.15
Verify which sensor your data is using just in case they have different calibration values and then look for the appropriate user guide.
Per the Modis 11 Level 2 Product user Guide:
The effective calibration formula for the "LST" SDS is LST = the SDS data in uint16 * 0.02, giving a value in the range of 150-1310.7K.