What do scientists consider a red star?

Scientists consider a red star to be a type of star that has a relatively low surface temperature, typically ranging from about 2,500 to 3,500 degrees Celsius. These stars emit light primarily in the red and infrared wavelengths, giving them their characteristic color. Red stars are often classified as red dwarfs or red giants, depending on their size and stage in the stellar lifecycle. They are generally cooler and less massive than other types of stars, like yellow or blue stars.