PDS 110

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PDS 110

PDS 110
Credit: Two Micron All Sky Survey (2MASS)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 05h 23m 31.008s
Declination –01° 04′ 23.68″
Apparent magnitude (V) 10.4
Characteristics
Spectral type keF6IVeb[1][2]
Distance
1035[2] ly
(335[2] pc)
Absolute magnitude (MV)+2.54[2]
Details
Myr
TYC
 4753-1534-1
Database references
SIMBADdata

PDS 110 is a young 11th magnitude star located approximately 1,090 light-years (335 pc)[2] away in the constellation Orion. In 2017, it was discovered that the star is orbited by an exoplanet or brown dwarf with a disk of dust around it.

Description

PDS 110 is a young star still approaching the

emission lines indicative of a T Tauri classification are somewhat weaker than a typical T Tauri star, interpreted as a post-T Tauri stage.[3]

Dust disk around secondary object

The PDS 110 planetary system
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b
 		1.8-70 MJ 2 808 ± 2 — — —

Brightness measurements from

SuperWASP and KELT showed two similar reductions in brightness in November 2008 and January 2011, both with a maximal luminosity reduction of 30% and a duration of 25 days. These events were interpreted as transits of a structure with a period of 808 ± 2 days, corresponding to an orbital distance of about 2 AU. The large reduction in brightness could have happened due to a planet or brown dwarf with a circum-secondary disk of dust with a radius of 0.3 AU around a central object with a mass between 1.8 and 70 times the mass of Jupiter. Another transit was predicted for September 2017,[2] but nothing similar to the previous events was seen, ruling out a periodic event.[5]


See also

References

  1. Bibcode:1999A&A...347..137M
    .
  2. ^
    S2CID 119450480
    .
  3. ^
    doi:10.1111/j.1365-2966.2008.13355.x
    .
  4. doi:10.1046/j.1365-8711.2002.05716.x
    .
  5. ^ PDS 110 Observing Campaign - Monitoring the potential September 2017 eclipse of young star PDS 110.

External links

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