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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 |
| Distance | approx. 1000 ly (approx. 400 pc) |
| Absolute magnitude (MV) | 11.88 |
| Details | |
| Mass | 0,6 M☉ |
| Radius | 0,5 R☉ |
| Luminosity | 0,04 L☉ |
| Temperature | 26000 K |
| Other designations | |
| 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)[1]. It is the prototype for symbiotic variables, which are a subset of cataclysmic variables[2].
References
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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2004A%26A...428..985T.
- 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: 742–750. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2004ARep...48..742T.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2004ApJ...604..357I.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2003A%26A...401..669T.
- SKOPAL A. (2003). "Discovery of the eclipse in the symbiotic binary Z Andromedae.". The Astrophysical Journal 401: L17–L20. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2003A%26A...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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2002AAS...201.1712S.
- 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: 1022–1029. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2002ARep...46.1022B.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?1999AcA....49..171G.
- SOKOLOSKI J.L.; BILDSTEN L. (1999). "Discovery of a magnetic white dwarf in the symbiotic binary Z Andromedae.". The Astrophysical Journal 517: 919–924. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?1999ApJ...517..919S.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?1998ApJ...507L..75B.
- SCHMID H.M.; SCHILD H. (1997). "The polarimetric orbit of Z Andromedae.". The Astrophysical Journal 327: 219–223. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?1997A%26A...327..219S.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2006A%26A...453..279S.
- SKOPAL A.; PRIBULLA T. (2006). "The first detection of the bipolar jets from the symbiotic prototype Z And.". The Astronomer's Telegram 882: 1. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2006ATel..882....1S.
- 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: 1002–1019. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2006ApJ...636.1002S.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2008MNRAS.385..445L.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2007A%26A...461L...5B.
- 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. doi:. http://simbad3.u-strasbg.fr/cgi-bin/cdsbib4?2007MNRAS.376L..16T.
- Iudin, B. F. (1986). "Choice of a model for Z Andromedae". The Astrophysical Journal 30: 84–92. doi:. http://adsabs.harvard.edu/abs/1986AZh....63..137I.
- 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
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