Gliese 251

Gliese 251
	estrella y near-IR source (en)
Datos d'observación
Ascensión reuta (α)	103,70399193057 °
Declinación (δ)	33,268177300672 °
Distancia a la Tierra	5,5846 pc
Magnitú aparente (V)	10,02 (banda V)
Magnitú absoluta	11,23
Constelación	Xéminis
Velocidá de rotación	−1,43 km/s
Velocidá radial	22,806 km/s
Parallax	179,0629 mas
Carauterístiques físiques
Radiu	0,364 Radius solars
Masa	0,36 M☉
Gravedá superficial	79 000 cm/s²
Tipu espectral	M3.0V
Otros nomes
	Ver llista UCAC4 617-038292 (Fourth USNO CCD Astrograph Catalog (en) ); 2MASS J06544902+3316058 (2MASS (es) ); IRAS 06515+3320 (IRAS (es) ); PLX 1609 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); LSPM J0654+3316 (LSPM-NORTH catalog (en) ); TYC 2441-572-1 (Tycho Catalogue (en) ); ASCC 574333 (All-sky Compiled Catalogue (en) ); GCRV 4506 (General Catalogue of Stellar Radial Velocities (es) ); GJ 251 (Catálogu Gliese); HD 265866 (Catálogu Henry Draper); HIC 33226 (Hipparcos Input Catalogue (en) ); HIP 33226 (Catálogu Hipparcos); JP11 5122 (JP11 (en) ); JP11 5121 (JP11 (en) ); JP11 5123 (JP11 (en) ); JP11 5120 (JP11 (en) ); LFT 497 (Luyten Five-Tenths catalogue (en) ); LHS 1879 (Luyten Half-Second catalogue (en) ); LTT 11941 (Luyten Two-Tenths catalogue (en) ); NLTT 17147 (New Luyten Two-Tenths catalogue (en) ); Zkh 95 (Catálogo Zakhozhaj (es) ); PLX 1609.00 (General Catalogue of Trigonometric Stellar Parallaxes (es) ); UCAC2 43431171 (Second USNO CCD Astrograph Catalog (en) ); Karmn J06548+332 (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS (en) ); AC +33 25644 (A critical investigation of star catalogues, the methods of their construction and their purpose (en) ); Ci 20 400 (Catalogue of proper motion stars (en) ); PM J06548+3316 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) ); Gaia DR1 939072609037892224 (Gaia DR1 (es) ); WEB 6685 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ); Gaia DR2 939072613334579328 (Gaia DR2 (es) ); TIC 68581262 (TESS Input Catalog (en) ); Gaia DR3 939072613334579328 (Gaia DR3 (es) ); UBV M 42939 (UBV Photoelectric Photometry Catalogue (en) );

Coordenaes: 6^h 54^m 48.958^s, 33^° 16^′ 5.438^″

Gliese 251 (GJ 251)^[8] ye una estrella que s'atopa a 18,15 años lluz de distancia del Sistema Solar. Asitiada na constelación de Xéminis, ye la estrella más próxima nesta constelación.^[9] Alcuéntrase cerca de la llende con Auriga a 49 minutos d'arcu de la brillosa θ Geminorum, anque por cuenta del so débil rellumu —magnitú aparente +9,89—^[8] nun puede ser reparada a simple vista. La estrella conocida más cercana a Gliese 251 ye QY Aurigae, distante 3,50 años lluz.^[10]

Gliese 251 ye una nana colorada de tipu espectral M4.0V^[8] con una temperatura efectivo de 3250 K.^[11]^[12] De carauterístiques asemeyaes a les componentes del sistema Struve 2398, a diferencia d'éstes nun esiste constancia de que Gliese 251 seya una estrella acandilante.

Gliese 251 tien una masa ente 0,35^[13] y 0,37 mases solares,^[12] y el so radiu equival al 45% del radiu solar. ^[14] Xira sobre sigo mesma con una velocidá de rotación proyeutada de 2,4 km/s.^[12] La so metalicidá ye inferior a la solar, siendo la so bayura relativa de fierro aproximao'l 70% de la esistente nel Sol.^[13] Observaciones en llonxitú d'onda infrarroxes refuguen la esistencia d'un discu de polvu al so alredor.^[15]

Ver tamién[editar | editar la fonte]

Llista d'estrelles cercanes a la Tierra

Referencies[editar | editar la fonte]

↑ ^1,0 ^1,1 ^1,2 Afirmao en: SIMBAD.
↑ ^2,0 ^2,1 ^2,2 ^2,3 Afirmao en: Gaia EDR3. Stated in source according to: SIMBAD. Llingua de la obra o nome: inglés. Data d'espublización: 3 avientu 2020.
↑ ^3,0 ^3,1 URL de la referencia: http://wwwadd.zah.uni-heidelberg.de/datenbanken/aricns/cnspages/4c00526.htm.
↑ M. Lampón (abril 2018). «The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars» (n'inglés). Astronomy and Astrophysics: páxs. 49–49. doi:10.1051/0004-6361/201732054.
↑ ^5,0 ^5,1 Lev Tal-Or (payares 2020). «The CARMENES search for exoplanets around M dwarfs. Three temperate-to-warm super-Earths». Astronomy and Astrophysics: páxs. A112. doi:10.1051/0004-6361/202038820.
↑ Jason Wright (xunetu 2021). «The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades» (n'inglés). The Astrophysical Journal Supplement Series (1): páxs. 8. doi:10.3847/1538-4365/ABE23C.
↑ A. Klutsch (mayu 2015). «CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS» (n'inglés). Astronomy and Astrophysics: páxs. 128–128. doi:10.1051/0004-6361/201525803.
↑ ^8,0 ^8,1 ^8,2 LHS 1879 -- High proper-motion Star (SIMBAD)
↑ Closest Stars
↑ Stars within 15 light-years of Wolf 294 (The Internet Stellar Database)
↑ O'Neal, Douglas; Neff, James Y.; Saar, Steven H.; Cuntz, Manfred (2004). «Further Results of TiO-Band Observations of Starspots». The Astronomical Journal 128 (4). pp. 1802-1811. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2004AJ....128.1802O&db_key=AST&nosetcookie=1.
↑ ^12,0 ^12,1 ^12,2 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. (2009). «Rotational Velocities for M Dwarfs». The Astrophysical Journal 704 (2). pp. 975-988. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1.
↑ ^13,0 ^13,1 Bonfils, X.; Delfosse, X.; Udry, S.; Santos, N. C.; Forveille, T.; Ségransan, D. (2005). «Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence». Astronomy and Astrophysics 442 (2). pp. 635-642. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005A%26A...442..635B&db_key=AST&nosetcookie=1.
↑ Catalogue of Stellar Diameters (CADARS) (VizieR, SIMBAD)
↑ Beichman, C. A.; Bryden, G.; Stapelfeldt, K. R.; Gautier, T. N.; Grogan, K.; Shao, M.; Velusamy, T.; Lawler, S. M.; Blaylock, M.; Rieke, G. H.; Lunine, J. I.; Fischer, D. A.; Marcy, G. W.; Greaves, J. S.; Wyatt, M. C.; Holland, W. S.; Dent, W. R. F. (2006). «New Debris Disks around Nearby Main-Sequence Stars: Impact on the Direct Detection of Planets». The Astrophysical Journal 652 (2). pp. 1674-1693. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2006ApJ...652.1674B&db_key=AST&nosetcookie=1.

Coordenaes: 6^h 54^m 48.958^s, 33^° 16^′ 5.438^″

[8ba559d5760a03bedaaacc3c347bbfe4981560bf-1] 1,0 ^1,1 ^1,2 Afirmao en: SIMBAD.

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

[59bbe18e79dc0a4502e79bae503d10b1264c7611-3] 3,0 ^3,1 URL de la referencia: http://wwwadd.zah.uni-heidelberg.de/datenbanken/aricns/cnspages/4c00526.htm.

[2361909060399d4806afed555596a195f35ed509-4] M. Lampón (abril 2018). «The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars» (n'inglés). Astronomy and Astrophysics: páxs. 49–49. doi:10.1051/0004-6361/201732054.

[d138cb793e6fcc9d1d434ae3a3d4b297a88c7712-5] 5,0 ^5,1 Lev Tal-Or (payares 2020). «The CARMENES search for exoplanets around M dwarfs. Three temperate-to-warm super-Earths». Astronomy and Astrophysics: páxs. A112. doi:10.1051/0004-6361/202038820.

[a44d9a97bc87eaeee10abf86bcf7f301a57627cb-6] Jason Wright (xunetu 2021). «The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades» (n'inglés). The Astrophysical Journal Supplement Series (1): páxs. 8. doi:10.3847/1538-4365/ABE23C.

[785bee3c2a7bc70efda5af7bbcce63e42f599213-7] A. Klutsch (mayu 2015). «CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS» (n'inglés). Astronomy and Astrophysics: páxs. 128–128. doi:10.1051/0004-6361/201525803.

[SIMBAD-8] 8,0 ^8,1 ^8,2 LHS 1879 -- High proper-motion Star (SIMBAD)

[9] Closest Stars

[10] Stars within 15 light-years of Wolf 294 (The Internet Stellar Database)

[LopezMorales-11] O'Neal, Douglas; Neff, James Y.; Saar, Steven H.; Cuntz, Manfred (2004). «Further Results of TiO-Band Observations of Starspots». The Astronomical Journal 128 (4). pp. 1802-1811. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2004AJ....128.1802O&db_key=AST&nosetcookie=1.

[Jenkins-12] 12,0 ^12,1 ^12,2 Jenkins, J. S.; Ramsey, L. W.; Jones, H. R. A.; Pavlenko, Y.; Gallardo, J.; Barnes, J. R.; Pinfield, D. J. (2009). «Rotational Velocities for M Dwarfs». The Astrophysical Journal 704 (2). pp. 975-988. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009ApJ...704..975J&db_key=AST&nosetcookie=1.

[Bonfils-13] 13,0 ^13,1 Bonfils, X.; Delfosse, X.; Udry, S.; Santos, N. C.; Forveille, T.; Ségransan, D. (2005). «Metallicity of M dwarfs. I. A photometric calibration and the impact on the mass-luminosity relation at the bottom of the main sequence». Astronomy and Astrophysics 442 (2). pp. 635-642. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005A%26A...442..635B&db_key=AST&nosetcookie=1.

[14] Catalogue of Stellar Diameters (CADARS) (VizieR, SIMBAD)

[15] Beichman, C. A.; Bryden, G.; Stapelfeldt, K. R.; Gautier, T. N.; Grogan, K.; Shao, M.; Velusamy, T.; Lawler, S. M.; Blaylock, M.; Rieke, G. H.; Lunine, J. I.; Fischer, D. A.; Marcy, G. W.; Greaves, J. S.; Wyatt, M. C.; Holland, W. S.; Dent, W. R. F. (2006). «New Debris Disks around Nearby Main-Sequence Stars: Impact on the Direct Detection of Planets». The Astrophysical Journal 652 (2). pp. 1674-1693. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2006ApJ...652.1674B&db_key=AST&nosetcookie=1.

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