LS IV-14 116

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LS IV-14 116[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquarius
Right ascension +20h 57m 38.875s[2]
Declination −14° 25′ 44.01″[2]
Apparent magnitude (V) +12.93[3]
Characteristics
Spectral type sdB0.5VIIHe18[4]
B−V color index −0.16[3]
Variable type
sdBVr[5][6]
Details
Surface gravity (log g)5.94 ± 0.04[7] cgs
Temperature34,950 ± 250[7] K
UCAC4
 378-169675
Database references
SIMBADdata

LS IV-14 116 is a hot

tip of the red giant branch.[9]

The star contains 10,000 times more zirconium than the Sun; it also has between 1,000 and 10,000 times the amount of strontium, germanium and yttrium than the Sun. The heavy metals are believed to be in cloud layers in the atmosphere where the ions of each metal have a particular opacity that allows radiational levitation to balance gravitational settling.[8]

References

  1. Bibcode:1963LS....C04....0N
    .
  2. ^
    Bibcode:2003yCat.1289....0Z
    .
  3. ^
    Bibcode:2012yCat.1322....0Z
    .
  4. doi:10.1051/0004-6361/201219433
    .
  5. S2CID 54615595
    .
  6. doi:10.1051/0004-6361:200500136
    .
  7. ^
    S2CID 122292750
    .
  8. ^
    S2CID 118469201
    .
  9. S2CID 118525163
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=LS_IV-14_116&oldid=1122085991"