| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 01h 22m 50.9353s [1] |
| Declination | −24° 39′ 50.6933″ [1] |
| Apparent magnitude (V) | 14.24±0.07 [1] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | M3.5V [2] |
| Astrometry | |
| Proper motion (μ) |
RA: 120.215
[3]
mas/
yr Dec.: −123.561 [3] mas/ yr |
| Parallax (π) | 29.6409 ± 0.0273 mas [3] |
| Distance | 110.0 ± 0.1
ly (33.74 ± 0.03 pc) |
| Details | |
| Mass | 0.4 [4] M☉ |
| Luminosity | 0.019 [2] L☉ |
| Temperature | 3530±50 [2] K |
| Rotation | 1.49±0.02 d [5] |
| Age | 0.12[ citation needed] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
2MASS J01225093−2439505 is a M-type main-sequence star. Its surface temperature is 3530±50 K. 2MASS J01225093−2439505 is much younger than the Sun at an age of 0.12 billion years. Kinematically, the star belongs to the AB Doradus moving group. [6]
Multiplicity surveys did not detect any stellar companions to 2MASS J01225093−2439505 as of 2016. [7]
Planetary system
In 2013, one
superjovian planet (may be a
brown dwarf),
[5] named
2MASS J01225093−2439505 b, was discovered by direct imaging.
[2] The measured planetary temperature is 1600±100
K,
[4] and it exhibits an unusual, short-lived atmospheric dust type due to its relatively low surface gravity and young age.
[2] The planetary spectrum is classified as L3.7±1.0.
[4] The planetary rotation axis is inclined to its orbit, obliquity is 33+17
−9°, while the orbit is well aligned with the equatorial plane of the star, misalignment is 1+28
−1°. The planet is rotating rapidly, with a period of 6.8±1.8 hours.
[5]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 19.5±7.5 MJ | 50 | — | — | 103+16 −6 [5] ° |
1.04±0.18 [5] RJ |
References
- ^ a b c d "LEHPM 1481". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-08.
- ^ a b c d e Bowler, Brendan P.; Liu, Michael C.; Shkolnik, Evgenya L.; Dupuy, Trent J. (2013). "Planets Around Low-Mass Stars. III. A Young Dusty L Dwarf Companion at the Deuterium-Burning Limit". The Astrophysical Journal. 774 (1): 55. arXiv: 1307.2237. Bibcode: 2013ApJ...774...55B. doi: 10.1088/0004-637X/774/1/55. S2CID 119107288.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c d Hinkley, Sasha; Bowler, Brendan P.; Vigan, Arthur; Aller, Kimberly M.; Liu, Michael C.; Mawet, Dimitri; Matthews, Elisabeth; Wahhaj, Zahed; Kraus, Stefan; Baraffe, Isabelle; Chabrier, Gilles (2015). "Early Results from VLT Sphere: Long-Slit Spectroscopy of 2Mass 0122–2439 B, A Young Companion Near the Deuterium Burning Limit". The Astrophysical Journal. 805 (1): L10. arXiv: 1504.07240. Bibcode: 2015ApJ...805L..10H. doi: 10.1088/2041-8205/805/1/L10. S2CID 20992122.
- ^ a b c d e Bryan, Marta L.; Chiang, Eugene; Bowler, Brendan P.; Morley, Caroline V.; Millholland, Sarah; Blunt, Sarah; Ashok, Katelyn B.; Nielsen, Eric; Ngo, Henry; Mawet, Dimitri; Knutson, Heather A. (2020). "Obliquity Constraints on an Extrasolar Planetary-mass Companion". The Astronomical Journal. 159 (4): 181. arXiv: 2002.11131. Bibcode: 2020AJ....159..181B. doi: 10.3847/1538-3881/ab76c6. S2CID 211505793.
- ^ Zhou, Yifan; Apai, Dániel; Lew, Ben W. P.; Schneider, Glenn; Manjavacas, Elena; Bedin, Luigi R.; Cowan, Nicolas B.; Marley, Mark S.; Radigan, Jacqueline; Karalidi, Theodora; Lowrance, Patrick J.; Miles-Páez, Paulo A.; Metchev, Stanimir; Burgasser, Adam J. (2019). "Cloud Atlas: High-contrast Time-resolved Observations of Planetary-mass Companions". The Astronomical Journal. 157 (3): 128. arXiv: 1902.00085. Bibcode: 2019AJ....157..128Z. doi: 10.3847/1538-3881/ab037f. S2CID 119074052.
- ^ Bryan, Marta L.; Bowler, Brendan P.; Knutson, Heather A.; Kraus, Adam L.; Hinkley, Sasha; Mawet, Dimitri; Nielsen, Eric L.; Blunt, Sarah C. (2016). "Searching for Scatterers: High-Contrast Imaging of Young Stars Hosting Wide-Separation Planetary-Mass Companions". The Astrophysical Journal. 827 (2): 100. arXiv: 1606.06744. Bibcode: 2016ApJ...827..100B. doi: 10.3847/0004-637X/827/2/100. S2CID 8681056.
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
 | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 01h 22m 50.9353s [1] |
| Declination | −24° 39′ 50.6933″ [1] |
| Apparent magnitude (V) | 14.24±0.07 [1] |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | M3.5V [2] |
| Astrometry | |
| Proper motion (μ) |
RA: 120.215
[3]
mas/
yr Dec.: −123.561 [3] mas/ yr |
| Parallax (π) | 29.6409 ± 0.0273 mas [3] |
| Distance | 110.0 ± 0.1
ly (33.74 ± 0.03 pc) |
| Details | |
| Mass | 0.4 [4] M☉ |
| Luminosity | 0.019 [2] L☉ |
| Temperature | 3530±50 [2] K |
| Rotation | 1.49±0.02 d [5] |
| Age | 0.12[ citation needed] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
2MASS J01225093−2439505 is a M-type main-sequence star. Its surface temperature is 3530±50 K. 2MASS J01225093−2439505 is much younger than the Sun at an age of 0.12 billion years. Kinematically, the star belongs to the AB Doradus moving group. [6]
Multiplicity surveys did not detect any stellar companions to 2MASS J01225093−2439505 as of 2016. [7]
Planetary system
In 2013, one
superjovian planet (may be a
brown dwarf),
[5] named
2MASS J01225093−2439505 b, was discovered by direct imaging.
[2] The measured planetary temperature is 1600±100
K,
[4] and it exhibits an unusual, short-lived atmospheric dust type due to its relatively low surface gravity and young age.
[2] The planetary spectrum is classified as L3.7±1.0.
[4] The planetary rotation axis is inclined to its orbit, obliquity is 33+17
−9°, while the orbit is well aligned with the equatorial plane of the star, misalignment is 1+28
−1°. The planet is rotating rapidly, with a period of 6.8±1.8 hours.
[5]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 19.5±7.5 MJ | 50 | — | — | 103+16 −6 [5] ° |
1.04±0.18 [5] RJ |
References
- ^ a b c d "LEHPM 1481". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-08.
- ^ a b c d e Bowler, Brendan P.; Liu, Michael C.; Shkolnik, Evgenya L.; Dupuy, Trent J. (2013). "Planets Around Low-Mass Stars. III. A Young Dusty L Dwarf Companion at the Deuterium-Burning Limit". The Astrophysical Journal. 774 (1): 55. arXiv: 1307.2237. Bibcode: 2013ApJ...774...55B. doi: 10.1088/0004-637X/774/1/55. S2CID 119107288.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c d Hinkley, Sasha; Bowler, Brendan P.; Vigan, Arthur; Aller, Kimberly M.; Liu, Michael C.; Mawet, Dimitri; Matthews, Elisabeth; Wahhaj, Zahed; Kraus, Stefan; Baraffe, Isabelle; Chabrier, Gilles (2015). "Early Results from VLT Sphere: Long-Slit Spectroscopy of 2Mass 0122–2439 B, A Young Companion Near the Deuterium Burning Limit". The Astrophysical Journal. 805 (1): L10. arXiv: 1504.07240. Bibcode: 2015ApJ...805L..10H. doi: 10.1088/2041-8205/805/1/L10. S2CID 20992122.
- ^ a b c d e Bryan, Marta L.; Chiang, Eugene; Bowler, Brendan P.; Morley, Caroline V.; Millholland, Sarah; Blunt, Sarah; Ashok, Katelyn B.; Nielsen, Eric; Ngo, Henry; Mawet, Dimitri; Knutson, Heather A. (2020). "Obliquity Constraints on an Extrasolar Planetary-mass Companion". The Astronomical Journal. 159 (4): 181. arXiv: 2002.11131. Bibcode: 2020AJ....159..181B. doi: 10.3847/1538-3881/ab76c6. S2CID 211505793.
- ^ Zhou, Yifan; Apai, Dániel; Lew, Ben W. P.; Schneider, Glenn; Manjavacas, Elena; Bedin, Luigi R.; Cowan, Nicolas B.; Marley, Mark S.; Radigan, Jacqueline; Karalidi, Theodora; Lowrance, Patrick J.; Miles-Páez, Paulo A.; Metchev, Stanimir; Burgasser, Adam J. (2019). "Cloud Atlas: High-contrast Time-resolved Observations of Planetary-mass Companions". The Astronomical Journal. 157 (3): 128. arXiv: 1902.00085. Bibcode: 2019AJ....157..128Z. doi: 10.3847/1538-3881/ab037f. S2CID 119074052.
- ^ Bryan, Marta L.; Bowler, Brendan P.; Knutson, Heather A.; Kraus, Adam L.; Hinkley, Sasha; Mawet, Dimitri; Nielsen, Eric L.; Blunt, Sarah C. (2016). "Searching for Scatterers: High-Contrast Imaging of Young Stars Hosting Wide-Separation Planetary-Mass Companions". The Astrophysical Journal. 827 (2): 100. arXiv: 1606.06744. Bibcode: 2016ApJ...827..100B. doi: 10.3847/0004-637X/827/2/100. S2CID 8681056.
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| This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
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| This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |