Astronomy:ADS 48

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Short description: Multiple star system with 7 stars in the constellation of Andromeda
ADS 48
Observation data
{{#ifeq:J2000|J2000.0 (ICRS)|Epoch J2000.0      Equinox J2000.0 (ICRS)| [[History:Epoch|Epoch J2000]]      [[Astronomy:Equinox (celestial coordinates)|Equinox J2000}}
Constellation Andromeda
ADS 48 A
Right ascension  00h 05m 41.0219s[1]
Declination +45° 48′ 43.5452″[1]
Apparent magnitude (V) 8.826[2]
ADS 48 B
Right ascension  00h 05m 41.0028s[3]
Declination +45° 48′ 37.3535″[3]
Apparent magnitude (V) 8.995[2]
ADS 48 F
Right ascension  00h 05m 10.8892s[4]
Declination +45° 47′ 11.6395″[4]
Apparent magnitude (V) 9.949[5]
Characteristics
ADS 48 A
Spectral type K6V[6]
B−V color index +1.344[2]
ADS 48 B
Spectral type M0.5V[6]
B−V color index +1.345[2]
ADS 48 F
Spectral type M1V[5]
U−B color index +1.18[7]
B−V color index +1.50[7]
Astrometry
ADS 48 AB
Radial velocity (Rv)1.49±0.1[8] km/s
Proper motion (μ) RA: 887.48±1.02[9] mas/yr
Dec.: −152.02±1.04[9] mas/yr
Parallax (π)88.44 ± 1.56[9] mas
Distance36.9 ± 0.7 ly
(11.3 ± 0.2 pc)
ADS 48 F
Radial velocity (Rv)−0.39±0.09[8] km/s
Proper motion (μ) RA: 870.753±0.057[4] mas/yr
Dec.: −151.267±0.036[4] mas/yr
Parallax (π)86.9567 ± 0.0407[4] mas
Distance37.51 ± 0.02 ly
(11.500 ± 0.005 pc)
Orbit[10]
PrimaryA
CompanionB
Period (P)509.65 ± 96.99 yr
Semi-major axis (a)6.21 ± 0.77″
Eccentricity (e)0.22 ± 0.04
Inclination (i)54.9 ± 2.4°
Longitude of the node (Ω)13.5 ± 2.3°
Periastron epoch (T)2115.80 ± 123.47
Argument of periastron (ω)
(secondary)		267.2 ± 27.4°
Details
ADS 48 A
Mass0.50[10] M☉
ADS 48 B
Mass0.53[10] M☉
ADS 48 F
Radius0.618±0.027[5] R☉
Temperature3484±50[5] K
Rotation15.37(9)[11] days
Rotational velocity (v sin i)2.76[5] km/s
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
ADS 48 F: HIP 428, GJ 2, CCDM J00057+4548F, WDS J00057+4549F
Database references
SIMBADAB
A
B
F

ADS 48 is a multiple star system in the constellation of Andromeda consisting of 7 stars. The components, in order from A to G, have apparent visual magnitudes of 8.826, 8.995,[2] 13.30,[12] 12.53, 11.68,[2] 9.949,[5] and 13.00.[13]

ADS 48A and ADS 48B are in orbital motion around each other while ADS 48F is a common proper motion companion not gravitationally bound to the pair. The others are unassociated background stars, and component C could be a double star itself.[14] It has also been proposed the existence of an unseen companion of 0.05 M☉.[10]

References

  1. ↑ 1.0 1.1 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars", Astronomy & Astrophysics 355: L27–L30, Bibcode: 2000A&A...355L..27H. 
  3. ↑ 3.0 3.1 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  4. ↑ 4.0 4.1 4.2 4.3 4.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Houdebine, E. R. (2010). "Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars". Monthly Notices of the Royal Astronomical Society 407 (3): 1657–1673. doi:10.1111/j.1365-2966.2010.16827.x. Bibcode: 2010MNRAS.407.1657H. 
  6. ↑ 6.0 6.1 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. doi:10.1086/504881. Bibcode: 2006PASP..118..814T. 
  7. ↑ 7.0 7.1 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode: 1986EgUBV........0M. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1986EgUBV........0M&db_key=AST&nosetcookie=1. 
  8. ↑ 8.0 8.1 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. doi:10.1086/340570. Bibcode: 2002ApJS..141..503N. 
  9. ↑ 9.0 9.1 9.2 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V. http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL.  Vizier catalog entry
  10. ↑ 10.0 10.1 10.2 10.3 Kiyaeva, O. V. (2001). "An astrometric study of the triple star ADS 48". Astronomy Letters 21 (6): 391–397. doi:10.1134/1.1374678. Bibcode: 2001AstL...27..391K. 
  11. ↑ Díez Alonso, E. et al. (January 2019). "CARMENES input catalogue of M dwarfs". Astronomy and Astrophysics 621. doi:10.1051/0004-6361/201833316. Bibcode: 2019A&A...621A.126D.  Vizier catalog entry
  12. ↑ "GSC 03246-01561". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GSC+03246-01561. 
  13. ↑ "GSC 03246-00320". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GSC+03246-00320. 
  14. ↑ Cvetković, Z. et al. (2012). "System ADS 48: Visual Binary or Multiple System". The Astronomical Journal 144 (3). doi:10.1088/0004-6256/144/3/80. Bibcode: 2012AJ....144...80C. 



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