ADS 1359

ADS 1359
Observation data
Epoch J2000      Equinox J2000
Constellation Cassiopeia
Right ascension 01h 44m 17.964s[1]
Declination +57° 32′ 11.81″[1]
Apparent magnitude (V) 6.18[2]
Characteristics
Spectral type G1-2V[3]/G1-2V[3]/A3[4]/G5[5]
U−B color index 0.05[2]
B−V color index 0.13[2]
Variable type Algol[6]
Astrometry
Radial velocity (Rv)7.11±0.30[3] km/s
Proper motion (μ) RA: 46.52±0.52[1] mas/yr
Dec.: 19.17±0.50[1] mas/yr
Parallax (π)17.6 ± 1.5[3] mas
Distance190 ± 20 ly
(57 ± 5 pc)
Orbit[3]
PrimaryADS 1359 A
CompanionADS 1359 B (V773 Cas)
Period (P)184.9±2.7 yr
Semi-major axis (a)0.911±0.065″
Eccentricity (e)0.794±0.050
Inclination (i)133.3±2.6°
Longitude of the node (Ω)125.4±4.3°
Periastron epoch (T)2021.8±2.1
Argument of periastron (ω)
(secondary)		269.5±8.5°
Orbit[3]
PrimaryV773 Cas A
CompanionV773 Cas B
Period (P)2.587332±0.000002 d
Semi-major axis (a)9.96±0.06 R⊙
Inclination (i)84.7±2.2°
Semi-amplitude (K1)
(primary)		97.1±0.9 km/s
Semi-amplitude (K2)
(secondary)		97.0±1.6 km/s
Details[3]
ADS 1359 A
Temperature8522±38 K
Rotational velocity (v sin i)84.55±1.42 km/s
Details[3]
V773 Cas A
Mass0.99±0.03 M☉
Radius1.05±0.05 R☉
Temperature5933±131 K
Rotational velocity (v sin i)32.17±2.32 km/s
V773 Cas B
Mass0.99±0.04 M☉
Radius1.05±0.05 R☉
Temperature5693±161 K
Rotational velocity (v sin i)49.10±7.46 km/s
Other designations
BU 870, V773 Cas, BD+56° 330, HD 10543, HIP 8115, HR 499, WDS J01443+5732AB[7]
Database references
SIMBADdata

ADS 1359 is a quadruple star system in the constellation Cassiopeia. It is composed of two sun like stars in a eclipsing binary with a 2.5-day period, which is in turn orbited by a A-type main-sequence star with a 185-year orbital period.[3] There is also HD 236848 which is a distant proper motion companion.[8]

Visual binary

The visual binary was discovered by Sherburne Wesley Burnham at Dearborn Observatory in Chicago in 1880.[9] A first preliminary orbit was calculated in 1971 by astronomer Georgije Popović using observations from 1880 to 1967.[10] Improved orbits were calculated in 1995[11], 2009[8] and 2017.[3]

Eclipsing binary

The eclipsing binary component designated V773 Cassiopeiae was discovered by the Hipparcos spacecraft.[12] The derived period of variability was 1.29 days,[6] exactly half the orbital period since each orbit produces two almost-identical eclipses.[3] The depth of the eclipses is less than 0.1 magnitudes.[3]

References

  1. 1 2 3 4 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. Vizier catalog entry
  2. 1 2 3 Guetter, H. H.; Hewitt, A. V. (1984). "Photoelectric UBV photometry for 317 PZT and VZT stars". Publications of the Astronomical Society of the Pacific. 96: 441–443. Bibcode:1984PASP...96..441G. doi:10.1086/131362.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 Zasche, P.; et al. (2017). "V773 Cas, QS Aql, and BR Ind: Eclipsing Binaries as Parts of Multiple Systems". The Astronomical Journal. 153 (1). 36. arXiv:1701.02537. Bibcode:2017AJ....153...36Z. doi:10.3847/1538-3881/153/1/36.
  4. ↑ Appenzeller, Immo (1967). "MK Spectral Types for 185 Bright Stars". Publications of the Astronomical Society of the Pacific. 79: 102–109. Bibcode:1967PASP...79..102A. doi:10.1086/128449.
  5. ↑ Halbwachs, J. L. (1986). "Common proper motion stars in the AGK 3". Astronomy and Astrophysics Supplement Series. 66: 131–148. Bibcode:1986A&AS...66..131H.
  6. 1 2 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  7. ↑ "V773 Cas". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-02-24.
  8. 1 2 Hartkopf, William I.; Mason, Brian D. (2009). "Speckle Interferometry at Mount Wilson Observatory: Observations Obtained in 2006–2007 and 35 New Orbits". The Astronomical Journal. 138 (3): 813–826. Bibcode:2009AJ....138..813H. doi:10.1088/0004-6256/138/3/813.
  9. ↑ Burnham, Sherburne Wesley (1883). "Double-star Observations made in 1879 and 1880 with the 18½ inch Refractor of the Dearborn Observatory, Chicago, US". Memoirs of the Royal Astronomical Society. 47: 167–202. Bibcode:1883MmRAS..47..167B.
  10. ↑ Popović, G. M. (1971). "The orbits of four visual double stars. (ADS 1359, 2377, 9126 and 16873)" (PDF). Bulletin de l'Observatoire Astronomique de Belgrade. 29: 31–36. Bibcode:1971BOBeo..29...31P.
  11. ↑ Popović, G. M.; Pavlovic, R. (1995). "Orbital elements of 13 double stars". Bulletin Astronomique de Belgrade. 151: 45–74. Bibcode:1995BABel.151...45P.
  12. ↑ Kazarovets, E. V.; et al. (1999). "The 74th Special Name-list of Variable Stars". Information Bulletin on Variable Stars. 4659. Bibcode:1999IBVS.4659....1K.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.