Location of WISE 0350−5658 in the constellation
Reticulum | |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Reticulum |
Right ascension | 03h 50m 00.32s [1] |
Declination | −56° 58′ 30.2″ [1] |
Characteristics | |
Spectral type | Y1 [1] |
Apparent magnitude (J ( MKO-NIR filter system)) | >22.8 [1] |
Apparent magnitude (H ( MKO-NIR filter system)) | >21.5 [1] |
Astrometry | |
Proper motion (μ) |
RA: −208.7±1.0
mas/
yr
[2] Dec.: −575.4±1.1 mas/ yr [2] |
Parallax (π) | 176.4 ± 2.3 mas [2] |
Distance | 18.5 ± 0.2
ly (5.67 ± 0.07 pc) |
Details | |
Temperature | 388±88 [2] K |
Other designations | |
Database references | |
SIMBAD | data |
WISE J035000.32−565830.2 (designation abbreviated to WISE 0350−5658) is a (sub-)brown dwarf of spectral class Y1, [1] located in constellation Reticulum, the nearest known star/ brown dwarf in this constellation. Being approximately 18.5 light-years from Earth, [2] it is one of the Sun's nearest neighbors.
WISE 0350−5658 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 the discovery of seven new brown dwarfs of spectral type Y that had been found by WISE, among which was WISE 0350−5658. [1]
WISE 0350−5658 is one of the nearest known brown dwarfs: its trigonometric parallax is 0.184 ± 0.010 arcsecond, corresponding to a direct distance of 5.4 pc (17.7 ly). [3]
WISE 0350−5658 was observed together with WISEP J1738+2732 with the Gemini Observatory. The researchers found that non-equilibrium chemistry models reproduce the spectra of these two brown dwarfs better than equilibrium models. The researchers also found an effective temperature of 350±25 K and surface gravity of log g=4.0±0.25 for WISE 0350−5658. A mass of 7−9 MJ was estimated in this work. [4] Later work using the Spitzer Space Telescope and J-band photometry found that WISE 0350−5658 has a low tangential velocity, could be metal-rich and also found a similar mass of 3−8 MJ. These properties could be an indicator that it is a young Y-dwarf. [5] Another work using Hubble found a slightly higher mass of 7−13 MJ. [6]
The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012): [1]
Location of WISE 0350−5658 in the constellation
Reticulum | |
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Reticulum |
Right ascension | 03h 50m 00.32s [1] |
Declination | −56° 58′ 30.2″ [1] |
Characteristics | |
Spectral type | Y1 [1] |
Apparent magnitude (J ( MKO-NIR filter system)) | >22.8 [1] |
Apparent magnitude (H ( MKO-NIR filter system)) | >21.5 [1] |
Astrometry | |
Proper motion (μ) |
RA: −208.7±1.0
mas/
yr
[2] Dec.: −575.4±1.1 mas/ yr [2] |
Parallax (π) | 176.4 ± 2.3 mas [2] |
Distance | 18.5 ± 0.2
ly (5.67 ± 0.07 pc) |
Details | |
Temperature | 388±88 [2] K |
Other designations | |
Database references | |
SIMBAD | data |
WISE J035000.32−565830.2 (designation abbreviated to WISE 0350−5658) is a (sub-)brown dwarf of spectral class Y1, [1] located in constellation Reticulum, the nearest known star/ brown dwarf in this constellation. Being approximately 18.5 light-years from Earth, [2] it is one of the Sun's nearest neighbors.
WISE 0350−5658 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 the discovery of seven new brown dwarfs of spectral type Y that had been found by WISE, among which was WISE 0350−5658. [1]
WISE 0350−5658 is one of the nearest known brown dwarfs: its trigonometric parallax is 0.184 ± 0.010 arcsecond, corresponding to a direct distance of 5.4 pc (17.7 ly). [3]
WISE 0350−5658 was observed together with WISEP J1738+2732 with the Gemini Observatory. The researchers found that non-equilibrium chemistry models reproduce the spectra of these two brown dwarfs better than equilibrium models. The researchers also found an effective temperature of 350±25 K and surface gravity of log g=4.0±0.25 for WISE 0350−5658. A mass of 7−9 MJ was estimated in this work. [4] Later work using the Spitzer Space Telescope and J-band photometry found that WISE 0350−5658 has a low tangential velocity, could be metal-rich and also found a similar mass of 3−8 MJ. These properties could be an indicator that it is a young Y-dwarf. [5] Another work using Hubble found a slightly higher mass of 7−13 MJ. [6]
The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012): [1]