K-type main-sequence star - Wikipedia
WEBA K-type main-sequence star, also referred to as a K-type dwarf, or orange dwarf, is a main-sequence (hydrogen-burning) star of spectral type K and luminosity class V. These stars are intermediate in size between red M-type main-sequence stars ("red dwarfs") and yellow/white G-type main-sequence stars .
'Orange dwarfs' may be the best stars to study in search for life
WEBJan 21, 2020 · Luckily for scientists, orange dwarfs (also known as K stars) represent relatively easy targets for finding planets. The light of such stars is slightly dimmer than our own star,...
Orange dwarf stars may pose challenges for their ‘habitable’ …
WEBApr 20, 2022 · Far-ultraviolet radiation from orange dwarfs could endanger planetary atmospheres. Orange dwarfs, such as those of the nearby double-star system 70 Ophiuchi (illustrated), could have...
Habitability of K-type main-sequence star systems - Wikipedia
WEBK-type main-sequence stars, also known as orange dwarfs, may be candidates for supporting extraterrestrial life.
What Are K-Type Stars? - YouTube
WEBK-type stars, also known as Orange dwarfs, may be the best stars to study in search for life. That's because they are stable in the main sequence phase for a very long time -- 20 to 70 billion...
Dwarf Star: Types, Characteristics, and More Exciting Features
WEBOrange Dwarfs. An orange dwarf is a K-type main-sequence star. The range of its mass is between 0.5 and 0.8 solar masses. Its surface temperature is between 3,900 and 5,200 K. Just like any stars in the main sequence, it is of luminosity class V. Orange dwarfs stay in the main sequence for about 18 to 34 billion years, longer than yellow dwarfs.
3 New Super-Earths Could Accelerate Our Search for ET Life
WEBJun 26, 2024 · Orange dwarfs are intriguing stellar candidates for supporting life, as they’re less active than Red dwarfs, but produce less radiation that Yellow dwarfs. A new study from an international team of...
Orange Dwarfs: ‘Goldilocks’ Stars for Life? - Centauri Dreams
WEBJan 13, 2020 · Unlike our Sun, which is about halfway through its 10 billion year lifetime, orange dwarfs can live for tens of billions of years, offering abundant opportunity for life’s growth and evolution. While not as ubiquitous as M-dwarfs, K-dwarfs appear to be about three times more numerous than G-dwarfs like the Sun.
Orange stars are just right for life - New Scientist
WEBMay 6, 2009 · Orange dwarfs are about three to four times as abundant as sun-like stars, making planet searches easier. Indeed, some planets have already been found around orange dwarfs, though outside...
Goldilocks Stars Are Best Places to Look for Life | HubbleSite
WEBJan 8, 2020 · An emerging idea, bolstered by stellar surveys performed by Hubble and other telescopes, is that the orange dwarfs are "Goldilocks stars" — not too hot, not too cool, and above all, not too violent to host life-friendly planets over a vast horizon of cosmic time.
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