Lambda Andromedae

Lambda Andromedae
Behaketa
Distantzia Lurretik	25,9245 pc
Itxurazko magnitudea (V)	3,82, 5,54, 4,84, 3,04, 2,47, 1,98, 1,4, 1,3 eta 3,404353
Magnitude absolutua	1,753
Mota espektrala	G8IVk
Metaltasuna	−0,63
Konstelazioa	Andromeda
Abiadura erradiala	6,84 km/s
Igoera zuzena	354,39101158368 °
Deklinazioa	46,458151311419 °
Ezaugarri fisikoak
Erradioa	7 Eguzki erradio
Diametroa	9.140.000 km
Masa	1 M☉
Argitasuna	1,2 L☉
Izendapenak
	ikusi $12MASS J23373382+4627298; Smithsonian Astrophysical Observatory Star Catalog (en) : SAO 53204; Henry Draper katalogoa: HD 222107; Hipparcos Catalogue (en) : HIP 116584; Bright Star Catalogue (en) : HR 8961; IRAS (en) : IRAS 23350+4610; Gliese katalogoa: GJ 9832; Bayerren izendapena: λ And; $11ES 2335+46.1; General Catalogue of Trigonometric Stellar Parallaxes (en) : PLX 5716; LSPM-NORTH catalog (en) : LSPM J2337+4627; Tycho Catalogue (en) : TYC 3638-2515-1; All-sky Compiled Catalogue (en) : ASCC 370402; Durchmusterung (en) : BD+45 4283; Catalog of Components of Double and Multiple Stars (en) : CCDM J23377+4627A; FK5 (en) : FK5 890; Boss General Catalogue (en) : GC 32832; General Catalogue of Stellar Radial Velocities (en) : GCRV 14808; Hipparcos Input Catalogue (en) : HIC 116584; Index Catalogue of Visual Double Stars (en) : IDS 23327+4555 A; Two-Micron Sky Survey (en) : IRC +50471; JP11 (en) : JP11 3640; Luyten Two-Tenths catalogue (en) : LTT 16964; Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) : N30 5188; New Luyten Two-Tenths catalogue (en) : NLTT 57442; Tokyo Photoelectric Meridian Circle Catalog (en) : PMC 90-93 626; PPM Star Catalogue (en) : PPM 64456; The Revised AFGL (RAFGL) catalogue (en) : RAFGL 3122; Catalogue of rotational velocities of the stars (en) : ROT 3426; TD1 Catalog of Stellar Ultraviolet Fluxes (en) : TD1 29974; UBV Photoelectric Photometry Catalogue (en) : UBV 21479; General Catalogue of Variable Stars (en) : lam And; General Catalogue of Trigonometric Stellar Parallaxes (en) : PLX 5716.00; $11RXS J233733.3+462736; $12EUVE J2337+46.4; The first Extreme Ultraviolet Explorer source catalog (en) : EUVE J2337+46.4; Washington Double Star Catalog (en) : WDS J23376+4627A; uvbyβ Photoelectric Photometric Catalogue (en) : uvby98 100222107; Eighth catalogue of the orbital elements of spectroscopic binary systems (en) : SBC9 1450; Catalogue of proper motion stars (en) : Ci 20 1442; Seventh catalogue of the orbital elements of spectroscopic binary systems (en) : SBC7 963; X-ray survey of the Large Magellanic Cloud by ROSAT (en) : RX J2337.5+4627; Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) : WEB 20581; Gaia Data Release 2 (en) : Gaia DR2 1939115478596951296; $116 And; TESS Input Catalog (en) : TIC 176788601; Gaia Data Release 3 (en) : Gaia DR3 1939115478598580352; AGK3U (en) : AG+46 2169; UBV Photoelectric Photometry Catalogue (en) : UBV M 27136;

Lambda Andromedae (λ And, λ Andromedae) iparraldeko Andromeda konstelazioko izar bitar baten Bayer izendapena da. Lurretik 86,1 argi-urte ingurura (26,4 parsec) dago eta +3,8ko itxurazko magnitudea du.^[1] Behar adinako distira du inolako begi hutsez ikusi ahal izateko.

Lambda Andromedae lerro bakarreko izar bitar espektroskopikoa da, 20,5212 eguneko orbita-periodokoa.^[2] Izar honen masa Eguzkiaren antzekoa da; erradioa, ordea, Eguzkiaren baino zazpi bider inguru handiagoa da. Bere kanpo-geruzak Eguzkiak baino 23< bider argi gehiago igortzen du 4800 K-ko tenperatura eraginkorrean^[3], G-motako izar baten berezko tonu horixka emanez.

Erreferetziak aldatu

↑ Jennens, P. A.; Helfer, H. L.. (September 1975). «A new photometric metal abundance and luminosity calibration for field G and K giants.» Monthly Notices of the Royal Astronomical Society 172: 667–679. doi:10.1093/mnras/172.3.667. Bibcode: 1975MNRAS.172..667J..
↑ Frasca, A.; Biazzo, K.; Taş, G.; Evren, S.; Lanzafame, A. C.. (2008ko otsaila). «Spots, plages, and flares on λ Andromedae and II Pegasi» Astronomy and Astrophysics 479 (2): 557–565. doi:10.1051/0004-6361:20077915. Bibcode: 2008A&A...479..557F..
↑ Drake, Jeremy J.; Ball, B.; Eldridge, John J.; Ness, J.-U.; Stancliffe, Richard J.. (2011ko azaroa). «Close to the dredge: precise X-Ray C and N abundances in λ Andromeda and its precocious red giant branch mixing problem» The Astronomical Journal 142 (5): 144. doi:10.1088/0004-6256/142/5/144. Bibcode: 2011AJ....142..144D..

Kanpo estekak aldatu

Datuak: Q749234

[mnras172_667-1] Jennens, P. A.; Helfer, H. L.. (September 1975). «A new photometric metal abundance and luminosity calibration for field G and K giants.» Monthly Notices of the Royal Astronomical Society 172: 667–679. doi:10.1093/mnras/172.3.667. Bibcode: 1975MNRAS.172..667J..

[aaa479_2_557-2] Frasca, A.; Biazzo, K.; Taş, G.; Evren, S.; Lanzafame, A. C.. (2008ko otsaila). «Spots, plages, and flares on λ Andromedae and II Pegasi» Astronomy and Astrophysics 479 (2): 557–565. doi:10.1051/0004-6361:20077915. Bibcode: 2008A&A...479..557F..

[aj142_5_144-3] Drake, Jeremy J.; Ball, B.; Eldridge, John J.; Ness, J.-U.; Stancliffe, Richard J.. (2011ko azaroa). «Close to the dredge: precise X-Ray C and N abundances in λ Andromeda and its precocious red giant branch mixing problem» The Astronomical Journal 142 (5): 144. doi:10.1088/0004-6256/142/5/144. Bibcode: 2011AJ....142..144D..

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