39 Tauri

39 Tauri
Datos d'observación; (Dómina J2000.0)
Constelación	Tauru
Ascensión reuta (α)	04h 05min 20,26s
Declinación (δ)	+22º 00’ 32,0’’
Mag. aparente (V)	+5,90
Carauterístiques físiques
Clasificación estelar	G5V
Masa solar	1,07 M☉
Radiu	(1,01 R☉)
Magnitú absoluta	4,76
Gravedá superficial	4,55 (log g)
Lluminosidá	1,02 L☉
Temperatura superficial	5895 K
Metalicidá	[Fe/H] = +0,05
Periodu de rotación	9,1
Astrometría
Velocidá radial	+25,4 km/s
Distancia	55 años lluz (16,9 pc)
Paralax	59,04 ± 0,33 mas
Referencies
SIMBAD	enllaz
NStED	enllaz
Otres designaciones
	HD 25680 / HR 1262 / HIP 19076 / SAO 76348 / BD+21 587
	[editar datos en Wikidata]

39 Tauri (39 Tau) ye una estrella na constelación de Tauru de magnitú aparente +5,90^[1] que s'atopa a 55 años lluz del Sistema Solar. L'analís de la so historia cinemática suxure que nun pertenez a nengún de los once grupos o corrientes estelares conocíos.^[2]

39 Tauri ye una nana mariella de tipu espectral G5V^[1] —asemeyáu por casu a 61 Virginis— con una temperatura efectivo de 5895 K.^[3] La so lluminosidá ye aproximao igual a la solar^[4] y tien un radiu apenes un 1% más grande que'l del Sol.^[5] Xira sobre sigo mesma con una velocidá de rotación proyeutada de 7,0 km/s, siendo el so periodu de rotación de 9,1 díes.^[6] Ye un 7% más masiva que'l Sol y la so edá cífrase ente los 2800^[4] y los 3700 millones d'años.^[7]

39 Tauri exhibe una metalicidá llixeramente cimera a la del Sol ([Fe/H] = 0,05).^[3] Polo xeneral, tolos elementos evaluaos amuesen valores comparables a les solares.^[8] Namái cobre y samariu son relativamente deficitarios en comparanza al Sol, siendo la bayura d'esti últimu metal la metá que na nuesa estrella ([Sm/H] = -0,30).^[9] Coles mesmes, el so conteníu de litiu ye más eleváu que la solar,^[8] anque hai que considerar que'l Sol paez tar emprobecíu nesti elementu en rellación con otres estrelles análogues de la nuesa redolada.

Referencies[editar | editar la fonte]

↑ ^1,0 ^1,1 39 Tau (SIMBAD)
↑ Nakajima, Tadashi; Morino, Jun-Ichi; Fukagawa, Misato (2010). «Potential Members of Stellar Kinematical Groups within 20 pc of the Sun». The Astronomical Journal 140 (3). pp. 713-722. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010AJ....140..713N&db_key=AST&nosetcookie=1.
↑ ^3,0 ^3,1 Soubiran, C.; Bienaymé, O.; Mishenina, T. V.; Kovtyukh, V. V. (2008). «Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants». Astronomy and Astrophysics 480 (1). pp. 91-101. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...480...91S&db_key=AST&nosetcookie=1.
↑ ^4,0 ^4,1 Valenti, Jeff A.; Fischer, Debra A. (2005). «Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs». The Astrophysical Journal Supplement Series 159 (1). pp. 141-166. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005ApJS..159..141V&db_key=AST&nosetcookie=1.
↑ Takeda, Genya; Ford, Eric B.; Sills, Alison; Rasio, Frederic A.; Fischer, Debra A.; Valenti, Jeff A. (2007). «Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog». The Astrophysical Journal Supplement Series 168 (2). pp. 297-318. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJS..168..297T&db_key=AST&nosetcookie=1.
↑ López-Santiago, J.; Montes, D.; Gálvez-Ortiz, M. C.; Crespo-Chacón, I.; Martínez-Arnáiz, R. M.; Fernández-Figueroa, M. J.; de Castro, Y.; Cornide, M. (2010). «A high-resolution spectroscopic survey of late-type stars: chromospheric activity, rotation, kinematics, and age». Astronomy and Astrophysics 514. A97. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010A%26A...514A..97L&db_key=AST&nosetcookie=1.
↑ Holmberg, J.; Nordström, B.; Andersen, J. (2009). «The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics». Astronomy and Astrophysics 501 (3). pp. 941-947. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009A%26A...501..941H&db_key=AST&nosetcookie=1.
↑ ^8,0 ^8,1 Mishenina, T. V.; Soubiran, C.; Bienaymé, O.; Korotin, S. A.; Belik, S. I.; Usenko, I. A.; Kovtyukh, V. V. (2008). «Spectroscopic investigation of stars on the lower main sequence». Astronomy and Astrophysics 489 (2). pp. 923-930. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...489..923M&db_key=AST&nosetcookie=1.
↑ Luck, R. Earle; Heiter, Ulrike (2006). «Dwarfs in the Local Region». The Astronomical Journal 131 (6). pp. 3069-3092. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2006AJ....131.3069L&db_key=AST&nosetcookie=1.

Coordenaes: 4^h 5^m 20.258^s, 22^° 0^′ 32.057^″

[SIMBAD-1] 1,0 ^1,1 39 Tau (SIMBAD)

[Nakajima-2] Nakajima, Tadashi; Morino, Jun-Ichi; Fukagawa, Misato (2010). «Potential Members of Stellar Kinematical Groups within 20 pc of the Sun». The Astronomical Journal 140 (3). pp. 713-722. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010AJ....140..713N&db_key=AST&nosetcookie=1.

[Soubiran-3] 3,0 ^3,1 Soubiran, C.; Bienaymé, O.; Mishenina, T. V.; Kovtyukh, V. V. (2008). «Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants». Astronomy and Astrophysics 480 (1). pp. 91-101. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...480...91S&db_key=AST&nosetcookie=1.

[Valenti-4] 4,0 ^4,1 Valenti, Jeff A.; Fischer, Debra A. (2005). «Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs». The Astrophysical Journal Supplement Series 159 (1). pp. 141-166. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2005ApJS..159..141V&db_key=AST&nosetcookie=1.

[Takeda-5] Takeda, Genya; Ford, Eric B.; Sills, Alison; Rasio, Frederic A.; Fischer, Debra A.; Valenti, Jeff A. (2007). «Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog». The Astrophysical Journal Supplement Series 168 (2). pp. 297-318. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2007ApJS..168..297T&db_key=AST&nosetcookie=1.

[LS-6] López-Santiago, J.; Montes, D.; Gálvez-Ortiz, M. C.; Crespo-Chacón, I.; Martínez-Arnáiz, R. M.; Fernández-Figueroa, M. J.; de Castro, Y.; Cornide, M. (2010). «A high-resolution spectroscopic survey of late-type stars: chromospheric activity, rotation, kinematics, and age». Astronomy and Astrophysics 514. A97. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2010A%26A...514A..97L&db_key=AST&nosetcookie=1.

[Geneva2009-7] Holmberg, J.; Nordström, B.; Andersen, J. (2009). «The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics». Astronomy and Astrophysics 501 (3). pp. 941-947. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2009A%26A...501..941H&db_key=AST&nosetcookie=1.

[Mishenina-8] 8,0 ^8,1 Mishenina, T. V.; Soubiran, C.; Bienaymé, O.; Korotin, S. A.; Belik, S. I.; Usenko, I. A.; Kovtyukh, V. V. (2008). «Spectroscopic investigation of stars on the lower main sequence». Astronomy and Astrophysics 489 (2). pp. 923-930. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2008A%26A...489..923M&db_key=AST&nosetcookie=1.

[Luck-9] Luck, R. Earle; Heiter, Ulrike (2006). «Dwarfs in the Local Region». The Astronomical Journal 131 (6). pp. 3069-3092. http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?2006AJ....131.3069L&db_key=AST&nosetcookie=1.

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