Z Andromedae

Z Andromedae

Z Andromedae
Observation data Epoch J2000      Equinox J2000
Constellation	Andromeda
Right ascension	23h 33m 39.9505s
Declination	+48° 49′ 05.947″
Apparent magnitude (V)	10.53
Characteristics
Spectral type	M6.5
B−V color index	1.1
Variable type	symbiotic variable star
Astrometry
Radial velocity (Rv)	3 km/s
Proper motion (μ)	RA: -6.72 mas/yr Dec.: -6.21 mas/yr
Parallax (π)	2.34 ± 2.91 mas
Absolute magnitude (MV)	11.88
Details
Mass	0,6 M☉
Radius	0,5 R☉
Luminosity	0,04 L☉
Temperature	26000 K
Other designations
EM* MWC 416, HIP 116287, SAO 53146, AG+48° 2087, GCRV 14773, IRAS 23312+4832, HV 193, AN 41.1901, JP11 3636, TYC 3645-2066-1, BD+48° 4093, GSC 03645-02066, 2MASS J23333994+4849059, AAVSO 2328+48, 2E 2331.6+4834, HD 221650, PLX 5697, 2E 4735, HIC 116287, PPM 64386.
Database references
SIMBAD	data
Data sources:
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.)

Z Andromedae is a symbiotic variable star with an hourglass-shaped nebula (like the Homonculus Nebula or Supernova 1987A). It is the prototype for symbiotic variables, which are a subset of cataclysmic variables.

Additional reading

• TOMOV N.A.; TOMOVA M.T.; TARANOVA O.G. (2004). "Broad-band multicolour observations of the symbiotic binary Z And during quiescence and its activity at the end of 2002". The Astrophysical Journal. 428: 985–992. Bibcode:2004A&A...428..985T.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• TARANOVA O.G.; TOMOV N.A.; TOMOVA M.T.; SHENAVRIN V.I (2004). "The symbiotic system Z Andromedae during the flare of 2000-2002". Astron. Rep. 48 (9): 742–750. Bibcode:2004ARep...48..742T. doi:10.1134/1.1800174.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• IKEDA Y.; AKITAYA H.; MATSUDA K.; HOMMA K.; SEKI M.; KAWABATA K.S.; HIRATA R.; OKAZAKI A. (2004). "Polarized Hα wings in the symbiotic stars AG Draconis and Z Andromedae". The Astrophysical Journal. 604: 357–361. Bibcode:2004ApJ...604..357I. doi:10.1086/381877.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• TOMOV N.A.; TARANOVA O.G.; TOMOVA M.T. (2003). "Mass ejection by the symbiotic binary Z And during its 2000-2002 outburst". The Astrophysical Journal. 401: 669–676. Bibcode:2003A&A...401..669T.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• SKOPAL A. (2003). "Discovery of the eclipse in the symbiotic binary Z Andromedae". The Astrophysical Journal. 401: L17–L20. Bibcode:2003A&A...401L..17S.
• SOKOLOSKI J.L.; BROCKSOPP C.; KAISER C.; SEYMOUR N. (2002). "A radio "Jet" in the prototypical symbiotic star Z Andromedae?". American Astron. Soc. Meeting. 201: #17.12. Bibcode:2002AAS...201.1712S.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• BISIKALO D.V.; BOYARCHUK A.A.; KILPIO E.Y.; KUZNETSOV O.A. (2002). "Structure of gas flows in Z And in quiescence and during outbursts". Astron. Rep. 46 (12): 1022–1029. Bibcode:2002ARep...46.1022B. doi:10.1134/1.1529260.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• GALLEGO M.C.; GARCIA J.A.; VAQUERO J.M.; SANCHEZ-BAJO F. (1999). "A strange attractor on a daily timescale in the visual observations of Z And ?". Acta Astron. 49: 171–180. Bibcode:1999AcA....49..171G.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• SOKOLOSKI J.L.; BILDSTEN L. (1999). "Discovery of a magnetic white dwarf in the symbiotic binary Z Andromedae". The Astrophysical Journal. 517 (2): 919–924. Bibcode:1999ApJ...517..919S. doi:10.1086/307234.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• BIRRIEL J.J.; ESPEY B.R.; SCHULTE-LADBECK R.E. (1998). "Near-simultaneous observations of direct and raman-scattered lines in the symbiotic star Z Andromedae". The Astrophysical Journal. 507: L75–L78. Bibcode:1998ApJ...507L..75B. doi:10.1086/311673.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• SCHMID H.M.; SCHILD H. (1997). "The polarimetric orbit of Z Andromedae". The Astrophysical Journal. 327: 219–223. Bibcode:1997A&A...327..219S.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• SKOPAL A.; VITTONE A.A.; ERRICO L.; OTSUKA M.; TAMURA S.; WOLF M.; ELKIN V.G. (2006). "Structure of the hot object in the symbiotic prototype Z Andromedae during its 2000-03 active phase". The Astrophysical Journal. 453: 279–293. Bibcode:2006A&A...453..279S.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• SKOPAL A.; PRIBULLA T. (2006). "The first detection of the bipolar jets from the symbiotic prototype Z And". The Astronomer's Telegram. 882: 1. Bibcode:2006ATel..882....1S.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• SOKOLOSKI J.L.; KENYON S.J.; ESPEY B.R.; KEYES C.D.; McCANDLISS S.R.; KONG A.K.H.; AUFDENBERG J.P.; FILIPPENKO A.V.; LI W.; BROCKSOPP C.; KAISER C.R.; CHARLES P.A.; RUPEN M.P.; STONE R.P.S. (2006). "A ``Combination nova outburst in Z Andromedae: nuclear shell burning triggered by a disk instability". The Astrophysical Journal. 636 (2): 1002–1019. Bibcode:2006ApJ...636.1002S. doi:10.1086/498206.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• LEIBOWITZ E.M.; FORMIGGINI L. (2008). "Activity cycle of the giant star of Z Andromedae and its spin period". Mon. Not. R. Astron. Soc. 385: 445–452. Bibcode:2008MNRAS.385..445L. doi:10.1111/j.1365-2966.2008.12847.x.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• BURMEISTER M.; LEEDJAERV L. (2007). "Evidence for bipolar jets from the optical spectra of the prototypical symbiotic star Z Andromedae". The Astrophysical Journal. 461: L5–L8. Bibcode:2007A&A...461L...5B.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• TOMOV N.A.; TOMOVA M.T.; BISIKALO D.V. (2007). "Bipolar ejection by the symbiotic binary system Z And during its 2006 outburst". Mon. Not. R. Astron. Soc. 376: L16–L19. Bibcode:2007MNRAS.376L..16T. doi:10.1111/j.1745-3933.2007.00277.x.{{cite journal}}: CS1 maint: multiple names: authors list (link)
• Iudin, B. F. (1986). "Choice of a model for Z Andromedae". The Astrophysical Journal. 30: 84–92. Bibcode:1986AZh....63..137I.

External links

• Image Z Andromedae
• Chart Z Andromedae
• Chart Z Andromedae
• view the long-term light curve of Z And
• www.aavso.org/
• HIC 116287
• A model for symbiotic star Z Andromedae