2MASS J18450079–1409036
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Scutum |
Right ascension | 18h 45m 00.79s |
Declination | –14° 09′ 03.6″ |
Apparent magnitude (V) | 13.221 |
Characteristics | |
Spectral type | M5 / M5 |
Astrometry | |
Gaia EDR3 4105057482987021184 | |
Proper motion (μ) | RA: 47.53±0.04[1] mas/yr Dec.: -85.95±0.03[1] mas/yr |
Parallax (π) | 55.2002 ± 0.0422[1] mas |
Distance | 59.09 ± 0.05 ly (18.12 ± 0.01 pc) |
Gaia EDR3 4105057482994688384 | |
Radial velocity (Rv) | -23.0±0.3[2] km/s |
Proper motion (μ) | RA: 33.48±0.04[3] mas/yr Dec.: -91.47±0.03[3] mas/yr |
Parallax (π) | 55.1253 ± 0.0443[3] mas |
Distance | 59.17 ± 0.05 ly (18.14 ± 0.01 pc) |
Orbit[4] | |
Primary | 2MASS J18450097–1409053 A |
Companion | 2MASS J18450097–1409053 B |
Period (P) | 586 yr |
Semi-major axis (a) | 3.224±0.016" (52 AU) |
Details[4] | |
2MASS J18450079–1409036 | |
Mass | 0.2 M☉ |
2MASS J18450097–1409053 | |
Mass | 0.2 M☉ |
Surface gravity (log g) | 4.50±0.05[5] cgs |
Temperature | 3000±23[5] K |
Metallicity [Fe/H] | -0.25±0.2[5] dex |
Age | 40±10[2] Myr |
Other designations | |
2MASS J18450097–1409053AB | |
2MASS J18450097–1409053A: UCAC3 152-2811762, UCAC4 380-128133, 2MASS J18450079–1409036 | |
2MASS J18450097–1409053B: UCAC3 152-281185, UCAC4 380-128136, 2MASS J18450097-1409053 | |
Database references | |
SIMBAD | 2MASS J18450079–1409036 |
2MASS J18450097–1409053 |
2MASS J18450079–1409036 and 2MASS J18450097–1409053 is a system of two red dwarf stars both of which have spectral types of M5,[6] with projected separation of 3.2 seconds of arc.[7] The system is located in the constellation Scutum. The Gaia parallaxes place the system at 18.2 parsecs (59 light-years) from Earth.[1][3] Kinematically, it belongs to young (30-50 million years) Argus association.[2]
Proper motion[]
2MASS J18450079–1409036 and 2MASS J18450097-1409053 appear to be a common proper motion pair,[8] confirmed to be bound in 2016.[4]
References[]
- ^ 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. Gaia EDR3 record for this source at VizieR.
- ^ a b c A W ISE-based search for debris discs amongst M-dwarfs in nearby, young, moving groups, 2016, arXiv:1611.07416
- ^ 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. Gaia EDR3 record for this source at VizieR.
- ^ a b c Binaries among low-mass stars in nearby young moving groups, 2016, arXiv:1612.02443
- ^ a b c The PASTEL catalogue : B/pastel
- ^ Riaz, Basmah; Gizis, John E.; Harvin, James (2006). "Identification of New M Dwarfs in the Solar Neighborhood". The Astronomical Journal. 132 (2): 866–872. arXiv:astro-ph/0606617. Bibcode:2006AJ....132..866R. doi:10.1086/505632. Table 1.
- ^ [HAZMAT. III. The UV Evolution of Mid- to Late-M Stars with GALEX HAZMAT. III. The UV Evolution of Mid- to Late-M Stars with GALEX, Table: Target Sample GALEX Photometry]
- ^ 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.
Categories:
- Scutum (constellation)
- Binary stars
- M-type main-sequence stars
- 2MASS objects
- Multiple star stubs
- Red dwarf star stubs