AD Leonis

AD Leonis
	estrella variable eruptiva (es)
Parte de	Castor Moving Group (en)
Datos d'observación
Ascensión reuta (α)	154,90117007551 °
Declinación (δ)	19,870002901825 °
Distancia a la Tierra	4,966 pc
Magnitú aparente (V)	9,52 (banda V)
Magnitú absoluta	10,96
Constelación	Lleo
Velocidá de rotación	7 km/s
Velocidá radial	12,43 km/s
Parallax	201,4064 mas
Carauterístiques físiques
Radiu	0,39 Radius solars
Masa	0,39 M☉
Gravedá superficial	52 000 cm/s²
Tipu espectral	M3.5
Otros nomes
	Ver llista 2MASS J10193634+1952122 (2MASS (es) ); SAO 81292 (Catálogu SAO); IRAS 10169+2007 (IRAS (es) ); GJ 388 (Catálogu Gliese); ADS 7724 C (Aitken Double Star Catalogue (en) ); 1ES 1016+20.1 (Einstein Slew survey, Version No. 1 (en) ); 1RXS J101936.3+195215 (1RXS (en) ); 2EUVE J1019+19.8 (The second Extreme Ultraviolet Explorer source catalog (en) ); ASCC 863621 (All-sky Compiled Catalogue (en) ); BD+20 2465 (Bonner Durchmusterung); CCDM J10199+1951C (Catalog of Components of Double and Multiple Stars (en) ); EUVE J1019+19.8 (The first Extreme Ultraviolet Explorer source catalog (en) ); GC 14167 (Boss General Catalogue (es) ); GCRV 6499 (General Catalogue of Stellar Radial Velocities (es) ); JP11 62 (JP11 (en) ); LHS 5167 (Luyten Half-Second catalogue (en) ); LSPM J1019+1952 (LSPM-NORTH catalog (en) ); LTT 12761 (Luyten Two-Tenths catalogue (en) ); NLTT 24015 (New Luyten Two-Tenths catalogue (en) ); PLX 2420 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); PLX 2420.00 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); PPM 127309 (Catálogo de estrellas PPM (es) ); RBS 855 (ROSAT All-Sky Survey Bright Source Catalogue (en) ); TYC 1423-174-1 (Tycho Catalogue (en) ); UBV 9550 (UBV Photoelectric Photometry Catalogue (en) ); UCAC4 550-048962 (Fourth USNO CCD Astrograph Catalog (en) ); AD Leo (General Catalogue of Variable Stars); Zkh 141 (Catálogo Zakhozhaj (es) ); UCAC2 38796273 (Second USNO CCD Astrograph Catalog (en) ); Karmn J10196+198AB (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS (en) ); Ci 18 1244 (Catalogue of proper motion stars (en) ); Ci 20 574 (Catalogue of proper motion stars (en) ); GPM 154.902458+19.870105 (GPM - compiled catalogue of absolute proper motions of stars in selected areas of sky with galaxies (en) ); [GKL99] 216 (Catalogue and bibliography of the UV Cet-type flare stars and related objects in the solar vicinity (en) ); RX J1019.6+1952 (X-ray survey of the Large Magellanic Cloud by ROSAT (en) ); [ZEH2003] RX J1019.6+1952 3 (The Hamburg/RASS Catalogue of optical identifications. Northern high-galactic latitude ROSAT Bright Source Catalogue X-ray sources (en) ); PM J10196+1952 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ); WEB 9274 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ); Gaia DR2 625453654702751872 (Gaia DR2 (es) ); Karmn J10196+198 (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS (en) ); Gaia DR3 625453654702751872 (Gaia DR3 (es) ); TIC 95431305 (TESS Input Catalog (en) ); AG+20 1170 (AGK3U (en) );

Coordenaes: 10^h 19^m 36.281^s, 19^° 52^′ 12.01^″

AD Leonis (GJ 388 / LHS 5167 / SAO 81292)^[10] ye una estrella cercana al Sistema Solar asitiada a daqué menos de 16 años lluz de distancia. Ye una nana colorada de tipu espectral M3V^[11] que'l so rellumu fluctúa ente magnitú aparente +8,07 y +11.^[12]Alcuéntrase naconstelación de Lleo y nun ye visible a simple vista. Con una lluminosidá 277 vegaes inferior a la del Sol, tien una temperatura efectivo de 3410 K.^[13] El so radiu equival al 39% del radiu solar y la so masa ye tan solo el 42% de la masa solar.^[14] La so velocidá de rotación proyeutada ye d'aproximao 3 km/s.^[13]

AD Leonis una estrella acandilante, una de les más actives nel hemisferiu norte y una de les más estudiaes. En munchos aspeutos, les erupciones en AD Leonis asemeyar a les que tienen llugar nel Sol. Reparóse que les propiedaes de les emisiones d'AD Leonis son notablemente similares ente sigo, inclusive en fogarales que la so morfoloxía evolutiva ye bien distinta. Esto suxer un mecanismu de calentamientu común y una estructura atmosférica que ye independiente de la evolución individual de cada erupción.^[15]

Les vecines más próximes a AD Leonis son tamién dos nanes coloraes, GJ 1116, a 5,6 años lluz, y Gliese 408, a 6,5 años lluz.^[16]

Al tar visualmente a 5 minutos d'arcu d'Algieba (γ Leonis), AD Leonis recibió'l nome de Gamma Leonis C, magar nun ta gravitacionalmente xunida al sistema estelar Algieba, que ta 8 vegaes más alloñáu.

Ver tamién

Llista d'estrelles cercanes a la Tierra

Referencies

↑ «General catalogue of variable stars: Version GCVS 5.1» (n'inglés). Astronomy Reports (1): páxs. 80–88. xineru 2017. doi:10.1134/S1063772917010085.
↑ Antonio Frasca (2014). «Reliable probabilistic determination of membership in stellar kinematic groups in the young disk» (n'inglés). Astronomy and Astrophysics: páxs. 52–52. doi:10.1051/0004-6361/201322575.
↑ ^3,0 ^3,1 ^3,2 Afirmao en: Gaia EDR3. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 3 avientu 2020.
↑ Afirmao en: Gaia DR2. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 25 abril 2018.
↑ ^5,0 ^5,1 URL de la referencia: http://wwwadd.zah.uni-heidelberg.de/datenbanken/aricns/cnspages/4c00797.htm.
↑ ^6,0 ^6,1 Afirmao en: SIMBAD.
↑ Claire Moutou (abril 2018). «SPIRou Input Catalogue: global properties of 440 M dwarfs observed with ESPaDOnS at CFHT» (n'inglés). Monthly Notices of the Royal Astronomical Society (2): páxs. 1960–1986. doi:10.1093/MNRAS/STX3246.
↑ URL de la referencia: http://www.recons.org/TOP100.posted.htm. Direición web d'archivu: https://www.webcitation.org/69Ys1TXkI?url=http://www.recons.org/TOP100.posted.htm. Data d'archivu: 31 xunetu 2012.
↑ «G.P. Kuiper's spectral classifications of proper-motion stars». The Astrophysical Journal Supplement Series: páxs. 197–227. ochobre 1985. doi:10.1086/191069.
↑ AD Leonis (SIMBAD)
↑ The one hundred nearest star systems (RECONS)
↑ AD Leonis (The Bright Star Catalogue. Variable stars/UV Ceti type)
↑ ^13,0 ^13,1 Reiners, A.; Basri, G. (2007). «The First Direct Measurements of Surface Magnetic Fields on Very Low Mass Stars». The Astrophysical Journal 656 (2). páxs. 1121-1135. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJ...656.1121R&db_key=AST&nosetcookie=1.
↑ Reiners, A.; Basri, G.; Browning, M. (2009). «Evidence for Magnetic Flux Saturation in Rapidly Rotating M Stars». The Astrophysical Journal 692 (1). páxs. 538-545. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...692..538R&db_key=AST&nosetcookie=1.
↑ Suzanne L. Hawley, Joel C. Allred, Christopher M. Johns‐Krull, George H. Fisher, William P. Abbett, Ilya Alekseev, Stavros I. Avgoloupis, Susana Y. Deustua, Alastair Gunn, John H. Seiradakis, Martin M. Sirk, Jeff A. Valenti (2003). «[http://www.journals.uchicago.edu/doi/abs/10.1086/378351 Multiwavelength Observations of Flares on AD Leonis]». The Astrophysical Journal 597. páxs. 535–554. http://www.journals.uchicago.edu/doi/abs/10.1086/378351.
↑ AD Leonis. The Internet Stellar Database

Coordenaes: 10^h 19^m 36.281^s, 19^° 52^′ 12.01^″

[91c9cd22d252c5e5fac5ddc59708cef9b7d9e81f-1] «General catalogue of variable stars: Version GCVS 5.1» (n'inglés). Astronomy Reports (1): páxs. 80–88. xineru 2017. doi:10.1134/S1063772917010085.

[b0b9f50a53db783812eb9f2a34a611f24de8a4c3-2] Antonio Frasca (2014). «Reliable probabilistic determination of membership in stellar kinematic groups in the young disk» (n'inglés). Astronomy and Astrophysics: páxs. 52–52. doi:10.1051/0004-6361/201322575.

[88f46fab9cce60c7e274ff942763157775017282-3] 3,0 ^3,1 ^3,2 Afirmao en: Gaia EDR3. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 3 avientu 2020.

[930587e73b5b66c983eb1a1b6178ebadc15ac870-4] Afirmao en: Gaia DR2. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 25 abril 2018.

[d0978559f69b9a21a568601ed708db98e3d27533-5] 5,0 ^5,1 URL de la referencia: http://wwwadd.zah.uni-heidelberg.de/datenbanken/aricns/cnspages/4c00797.htm.

[8ba559d5760a03bedaaacc3c347bbfe4981560bf-6] 6,0 ^6,1 Afirmao en: SIMBAD.

[eb208fe17310d411cfb83033aa030ad2ac903d5e-7] Claire Moutou (abril 2018). «SPIRou Input Catalogue: global properties of 440 M dwarfs observed with ESPaDOnS at CFHT» (n'inglés). Monthly Notices of the Royal Astronomical Society (2): páxs. 1960–1986. doi:10.1093/MNRAS/STX3246.

[c8193c8a38ecb0f5a5d14be6d6a77fbdcbb86f32-8] URL de la referencia: http://www.recons.org/TOP100.posted.htm. Direición web d'archivu: https://www.webcitation.org/69Ys1TXkI?url=http://www.recons.org/TOP100.posted.htm. Data d'archivu: 31 xunetu 2012.

[968d9143bcb6276efaa3906777fa257c86d9498d-9] «G.P. Kuiper's spectral classifications of proper-motion stars». The Astrophysical Journal Supplement Series: páxs. 197–227. ochobre 1985. doi:10.1086/191069.

[10] AD Leonis (SIMBAD)

[RECONS-11] The one hundred nearest star systems (RECONS)

[12] AD Leonis (The Bright Star Catalogue. Variable stars/UV Ceti type)

[Reiners07-13] 13,0 ^13,1 Reiners, A.; Basri, G. (2007). «The First Direct Measurements of Surface Magnetic Fields on Very Low Mass Stars». The Astrophysical Journal 656 (2). páxs. 1121-1135. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJ...656.1121R&db_key=AST&nosetcookie=1.

[Reiners09-14] Reiners, A.; Basri, G.; Browning, M. (2009). «Evidence for Magnetic Flux Saturation in Rapidly Rotating M Stars». The Astrophysical Journal 692 (1). páxs. 538-545. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...692..538R&db_key=AST&nosetcookie=1.

[15] Suzanne L. Hawley, Joel C. Allred, Christopher M. Johns‐Krull, George H. Fisher, William P. Abbett, Ilya Alekseev, Stavros I. Avgoloupis, Susana Y. Deustua, Alastair Gunn, John H. Seiradakis, Martin M. Sirk, Jeff A. Valenti (2003). «[http://www.journals.uchicago.edu/doi/abs/10.1086/378351 Multiwavelength Observations of Flares on AD Leonis]». The Astrophysical Journal 597. páxs. 535–554. http://www.journals.uchicago.edu/doi/abs/10.1086/378351.

[16] AD Leonis. The Internet Stellar Database

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