2MASS J18450079−1409036

2MASS J18450079−1409036 / 2MASS J18450097−1409053
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Scutum
2MASS J18450079−1409036
Right ascension 18h 45m 00.79s[1]
Declination −14° 09′ 04.0″[1]
Apparent magnitude (V) 12.95[2]
2MASS J18450097−1409053
Right ascension 18h 45m 00.98s[3]
Declination −14° 09′ 5.7″[3]
Apparent magnitude (V) 13.75[4]
Characteristics
Spectral type M5 / M5
Astrometry
2MASS J18450079−1409036
Proper motion (μ) RA: +47.53±0.04 mas/yr[1]
Dec.: −85.95±0.03 mas/yr[1]
Parallax (π)55.2002±0.0422 mas[1]
Distance59.09 ± 0.05 ly
(18.12 ± 0.01 pc)
2MASS J18450097−1409053
Radial velocity (Rv)−23.0±0.3[5] km/s
Proper motion (μ) RA: +33.48±0.04 mas/yr[3]
Dec.: −91.47±0.03 mas/yr[3]
Parallax (π)55.1253±0.0443 mas[3]
Distance59.17 ± 0.05 ly
(18.14 ± 0.01 pc)
Orbit[6]
Primary2MASS J18450097−1409053 A
Name2MASS J18450097−1409053 B
Period (P)586 yr
Semi-major axis (a)3.224±0.016"
(52 AU)
Details
2MASS J18450079−1409036
Mass0.2[6] M☉
Radius0.40[7] R☉
Luminosity0.012[1] L☉
Surface gravity (log g)4.57[1] cgs
Temperature3,444[7] K
2MASS J18450097−1409053
Mass0.2[6] M☉
Radius0.40[4] R☉
Luminosity0.018[8] L☉
Surface gravity (log g)4.50±0.05[9] cgs
Temperature3,443[7] K
Metallicity [Fe/H]−0.25±0.2[9] dex
Age40±10[5] Myr
Other designations
WDS J18450-1409
A: 2MASS J18450079−1409036, UCAC3 152-2811762, UCAC4 380-128133
B: 2MASS J18450097−1409053, UCAC3 152-281185, UCAC4 380-128136
Database references
SIMBAD2MASS 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,[10] with projected separation of 3.2 seconds of arc.[11] 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.[5]

2MASS J18450079−1409036 and 2MASS J18450097−1409053 appear to be a common proper motion pair,[12] confirmed to be bound in 2016.[6]

References

  1. ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  2. ^ Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3. Proper-motion anomaly and resolved common proper-motion pairs". Astronomy and Astrophysics. 657. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146.
  3. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  4. ^ a b Suissa, Gabrielle; Mandell, Avi M.; Wolf, Eric T.; Villanueva, Geronimo L.; Fauchez, Thomas; Kopparapu, Ravi Kumar (2020). "Dim Prospects for Transmission Spectra of Ocean Earths around M Stars". The Astrophysical Journal. 891 (1): 58. arXiv:1912.08235. Bibcode:2020ApJ...891...58S. doi:10.3847/1538-4357/ab72f9.
  5. ^ a b c Binks, A. S.; Jeffries, R. D. (2016), "A WISE-based search for debris discs amongst M dwarfs in nearby, young, moving groups", Monthly Notices of the Royal Astronomical Society, 469: 579–593, arXiv:1611.07416, doi:10.1093/mnras/stx838
  6. ^ a b c d Janson, Markus; Durkan, Stephen; Hippler, Stefan; Dai, Xiaolin; Brandner, Wolfgang; Schlieder, Joshua; Bonnefoy, Mickaël; Henning, Thomas (2016), "Binaries among low-mass stars in nearby young moving groups", Astronomy & Astrophysics, 599: A70, arXiv:1612.02443, doi:10.1051/0004-6361/201629945, S2CID 32267273
  7. ^ a b c Sebastian, D.; Gillon, M.; Ducrot, E.; Pozuelos, F. J.; Garcia, L. J.; Günther, M. N.; Delrez, L.; Queloz, D.; Demory, B. O.; Triaud, A. H. M. J.; Burgasser, A.; De Wit, J.; Burdanov, A.; Dransfield, G.; Jehin, E.; McCormac, J.; Murray, C. A.; Niraula, P.; Pedersen, P. P.; Rackham, B. V.; Sohy, S.; Thompson, S.; Van Grootel, V. (2021). "SPECULOOS: Ultracool dwarf transit survey. Target list and strategy". Astronomy and Astrophysics. 645. arXiv:2011.02069. Bibcode:2021A&A...645A.100S. doi:10.1051/0004-6361/202038827.
  8. ^ Fernandes, Rachel B.; Hardegree-Ullman, Kevin K.; Pascucci, Ilaria; Bergsten, Galen J.; Mulders, Gijs D.; Cunha, Katia; Mamajek, Eric E.; Pearson, Kyle A.; Feiden, Gregory A.; Curtis, Jason L. (2023). "Using Photometrically Derived Properties of Young Stars to Refine TESS's Transiting Young Planet Survey Completeness". The Astronomical Journal. 166 (4): 175. arXiv:2308.13039. Bibcode:2023AJ....166..175F. doi:10.3847/1538-3881/acf4f0.
  9. ^ a b "The PASTEL catalogue : B/pastel". Archived from the original on 2021-05-26. Retrieved 2021-05-26.
  10. ^ 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. S2CID 6282011. Table 1.
  11. ^ [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]
  12. ^ 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.


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