ADS 48
| Observation data Epoch J2000 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 mas[9] |
| Distance | 36.9 ± 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 mas[4] |
| Distance | 37.51 ± 0.02 ly (11.500 ± 0.005 pc) |
| Orbit[10] | |
| Primary | A |
| Companion | B |
| 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 | |
| Mass | 0.50[10] M☉ |
| ADS 48 B | |
| Mass | 0.53[10] M☉ |
| ADS 48 F | |
| Radius | 0.618±0.027[5] R☉ |
| Temperature | 3484±50[5] K |
| Rotation | 15.37(9)[11] days |
| Rotational velocity (v sin i) | 2.76[5] km/s |
| Other designations | |
| 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 | |
| SIMBAD | AB |
| 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
[edit]- ^ a b 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.
- ^ a b c d e f 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.
- ^ a b 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.
- ^ a b c d e 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.
- ^ a b c d e f 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. Bibcode:2010MNRAS.407.1657H. doi:10.1111/j.1365-2966.2010.16827.x.
- ^ a b 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.
- ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
- ^ a b 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.
- ^ a b c 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
- ^ a b c d 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.
- ^ Díez Alonso, E.; et al. (January 2019). "CARMENES input catalogue of M dwarfs". Astronomy and Astrophysics. 621 A126. arXiv:1810.03338. Bibcode:2019A&A...621A.126D. doi:10.1051/0004-6361/201833316. Vizier catalog entry
- ^ "GSC 03246-01561". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 July 2013.
- ^ "GSC 03246-00320". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 July 2013.
- ^ 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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