WISE J071322.55−291751.9 (designation abbreviated to WISE 0713−2917) is a brown dwarf of spectral class Y0,[1] located in constellation Canis Major at approximately 30 light-years from Earth.[3]
| Observation data Epoch J2000[1] Equinox J2000[1] | |
|---|---|
| Constellation | Canis Major |
| Right ascension | 07h 13m 22.55s[1] |
| Declination | −29° 17′ 51.9″[1] |
| Characteristics | |
| Spectral type | Y0[1] |
| Apparent magnitude (J (MKO-NIR filter system)) | 19.64 ± 0.15[1] |
| Apparent magnitude (J (SOAR/OSIRIS)) | 20.06 ± 0.21[1] |
| Apparent magnitude (H (MKO-NIR filter system)) | >19.3[1] |
| Apparent magnitude (H (SOAR/OSIRIS)) | 21.16 ± 0.66[1] |
| Astrometry | |
| Proper motion (μ) | RA: 354.1 ± 0.9 mas/yr[2] Dec.: −410.3 ± 0.9 mas/yr[2] |
| Parallax (π) | 109.3 ± 2.1 mas[2] |
| Distance | 29.8 ± 0.6 ly (9.1 ± 0.2 pc) |
| Details | |
| Temperature | 464 ± 88[2] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
Discovery
editWISE 0713−2917 was discovered in 2012 by J. Davy Kirkpatrick and colleagues from data collected by the Wide-field Infrared Survey Explorer (WISE) in the infrared at a wavelength of 40 cm (16 in), whose mission lasted from December 2009 to February 2011. In 2012 Kirkpatrick et al. published a paper in The Astrophysical Journal, where they presented discovery of seven new found by WISE brown dwarfs of spectral type Y, among which also was WISE 0713−2917.[1]
Distance
editCurrently the most accurate distance estimate of WISE 0713−2917 is a trigonometric parallax, published in 2014 by Beichman et al.: 0.106 ± 0.013 arcsec, corresponding to a distance of 9.4 ± 1.2 pc (30.7 ± 3.9 ly).[3] An improved parallax was published in 2021, placing WISE 0713−2917 at around 30 light years.[2]
Physical properties
editMass estimates are 19−33 MJ[4] and 13−19 MJ[5] for WISE 0713−2917 depending on the study. No evidence for it being a binary was detected.[4]
See also
editLists:
The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012):[1]
- WISE 0146+4234 (Y0)
- WISE 0350−5658 (Y1)
- WISE 0359−5401 (Y0)
- WISE 0535−7500 (≥Y1)
- WISE 0734−7157 (Y0)
- WISE 2220−3628 (Y0)
References
edit- ^ a b c d e f g h i j k l m n Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amy K.; Burgasser, Adam J.; Tinney, Chris G.; Parker, Stephen; Salter, Graeme (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal. 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156. S2CID 119279752.
- ^ a b c d Kirkpatrick, J. Davy; Gelino, Christopher R.; Faherty, Jacqueline K.; Meisner, Aaron M.; Caselden, Dan; Schneider, Adam C.; Marocco, Federico; Cayago, Alfred J.; Smart, R. L.; Eisenhardt, Peter R.; Kuchner, Marc J.; Wright, Edward L.; Cushing, Michael C.; Allers, Katelyn N.; Bardalez Gagliuffi, Daniella C. (2021-03-01). "The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs". The Astrophysical Journal Supplement Series. 253 (1): 7. arXiv:2011.11616. Bibcode:2021ApJS..253....7K. doi:10.3847/1538-4365/abd107. ISSN 0067-0049.
- ^ a b Beichman, C.; Gelino, Christopher R.; Kirkpatrick, J. Davy; Cushing, Michael C.; Dodson-Robinson, Sally; Marley, Mark S.; Morley, Caroline V.; Wright, E. L. (2014). "WISE Y Dwarfs As Probes of the Brown Dwarf-Exoplanet Connection". The Astrophysical Journal. 783 (2): 68. arXiv:1401.1194v2. Bibcode:2014ApJ...783...68B. doi:10.1088/0004-637X/783/2/68. S2CID 119302072.
- ^ a b Fontanive, Clémence; Biller, Beth; Bonavita, Mariangela; Allers, Katelyn (2018-09-01). "Constraining the multiplicity statistics of the coolest brown dwarfs: binary fraction continues to decrease with spectral type". Monthly Notices of the Royal Astronomical Society. 479 (2): 2702–2727. arXiv:1806.08737. Bibcode:2018MNRAS.479.2702F. doi:10.1093/mnras/sty1682. ISSN 0035-8711.
- ^ Leggett, S. K.; Tremblin, P.; Esplin, T. L.; Luhman, K. L.; Morley, Caroline V. (2017-06-01). "The Y-type Brown Dwarfs: Estimates of Mass and Age from New Astrometry, Homogenized Photometry, and Near-infrared Spectroscopy". The Astrophysical Journal. 842 (2): 118. arXiv:1704.03573. Bibcode:2017ApJ...842..118L. doi:10.3847/1538-4357/aa6fb5. ISSN 0004-637X.