ADS 48

Last updated
ADS 48
Observation data
Epoch J2000        Equinox J2000
Constellation Andromeda [1]
ADS 48 A
Right ascension 00h 05m 41.0219s [2]
Declination +45° 48′ 43.545″ [2]
Apparent magnitude  (V)8.826 [3]
ADS 48 B
Right ascension 00h 05m 41.0028s [4]
Declination +45° 48′ 37.354″ [4]
Apparent magnitude  (V)8.995 [3]
Characteristics
ADS 48 A
Spectral type K6V [5]
B−V color index +1.344 [3]
ADS 48 B
Spectral type M0.5V [5]
B−V color index +1.345 [3]
Astrometry
Radial velocity (Rv)1.49±0.1 [6] km/s
Proper motion (μ)RA: 887.48±1.02 [7] mas/yr
Dec.: −152.02±1.04 [7] mas/yr
Parallax (π)88.44±1.56  mas [7]
Distance 36.9 ± 0.7  ly
(11.3 ± 0.2  pc)
Absolute magnitude  (MV)+7.93 [1]
Orbit [8]
Period (P)557±120  yr
Semi-major axis (a)74±10  AU
Eccentricity (e)0.19±0.08
Inclination (i)54.3±2.3°
Longitude of the node (Ω)12.5±2.8°
Periastron epoch (T)2110±30
Argument of periastron (ω)
(secondary)		256±31°
Details
ADS 48 A
Mass 0.50 [9]   M☉
ADS 48 B
Mass 0.53 [9]   M☉
Other designations
HD 38, HIP 473, GJ 4, CCDM J00057+4548AB, WDS J00057+4549AB
ADS 48 A: HD 38A, SAO 36046, GC 71, GJ 4 A, CCDM J00057+4548A, WDS J00057+4549A
ADS 48 B: HD 38B, SAO 36048, GC 72, GJ 4 B, CCDM J00057+4548B, WDS J00057+4549B
Database references
SIMBAD AB
A
B

ADS 48 is a binary system in the constellation of Andromeda.

The components have apparent visual magnitudes of 8.826 and 8.995. [3] Component A is a K-type main-sequence star, while component B is an M-type main-sequence star (red dwarf). [5] The stars are orbiting with a period of 550 years and a separation of 74  AU . [8]

Multiple stars lie close to ADS 48 in the line of sight, and have been considered components C, D and E of the system, but are background objects. ADS 48 F (Gliese 2) is at a similar distance from the pair and share similar proper motions, but is moving faster than the escape velocity of the pair and thus is not gravitationally bound. [10] The existence of an unseen companion of 0.05  M☉ has also been proposed, [9] but this was refuted. [8]

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  3. 1 2 3 4 5 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy & Astrophysics. 355: L27 –L30. Bibcode:2000A&A...355L..27H.
  4. 1 2 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  5. 1 2 3 Tamazian, Vakhtang S.; Docobo, José A.; Melikian, Norair D.; Karapetian, Arthur A. (2006). "MK Classification and Dynamical Masses for Late-Type Visual Binaries". Publications of the Astronomical Society of the Pacific. 118 (844): 814. Bibcode:2006PASP..118..814T. doi: 10.1086/504881 .
  6. ↑ Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S. (2002). "Radial Velocities for 889 Late-Type Stars". The Astrophysical Journal Supplement Series. 141 (2): 503–522. arXiv: astro-ph/0112477 . Bibcode:2002ApJS..141..503N. doi:10.1086/340570. S2CID   51814894.
  7. 1 2 3 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600. Vizier catalog entry
  8. 1 2 3 Kiyaeva, O. V.; Zhuchkov, R. Ya; Izmailov, I. S. (2021). "Investigation of relative motion in the triple system ADS 48 on the basis of Gaia DR2 and Pulkovo 26-inch refractor observations". Astronomical and Astrophysical Transactions. 32 (2): 89–98. Bibcode:2021A&AT...32...89K. ISSN   1055-6796.
  9. 1 2 3 Kiyaeva, O. V. (2001). "An astrometric study of the triple star ADS 48". Astronomy Letters. 21 (6): 391–397. Bibcode:2001AstL...27..391K. doi:10.1134/1.1374678. S2CID   121012446.
  10. ↑ Cvetković, Z.; et al. (2012). "System ADS 48: Visual Binary or Multiple System". The Astronomical Journal. 144 (3) 80. Bibcode: 2012AJ....144...80C . doi: 10.1088/0004-6256/144/3/80 . S2CID   120045704.
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