Principal     To Survive in the Universe    
Services
    Why to Inhabit     Top Contributors     Astrofotografía     La Colección     Foro     Blog New!     FAQ     Login  
→ Adopt this star  

TYC 297-281-1


Contenidos

Imágenes

Subir su imagen

DSS Images   Other Images


Artículos relacionados

Absolute magnitudes of carbon stars from HIPPARCOS parallaxes
Hipparcos trigonometric parallaxes and photometric data for about 40bright carbon stars have been analysed. Individual absolute visual andbolometric magnitudes, normal color indices (B-V)_0, absorption valuesand distance moduli were determined. By comparison with stellarevolutionary tracks for initial mass 1<= M/M_ȯ<=4 it is foundthat the majority of CH- and R-stars are on the giant and subgiantbranches, but N-stars occupy a region -4

The ages and dimensions of Trapezium systems
MK spectral types and memberships were obtained for 120 stars in 31systems thought to be Trapezium systems. Twenty-eight optical componentswere found, after the removal of which, 17 systems are hierarchical andthree have no companions. Practically all of the remaining Trapeziumsystems are either the same age or younger than the Hyades, i.e., lessthan 10 to the 8.9th years old. The maximum radii of Trapezium combinedwith hierarchical systems exhibit a dramatic decrease with primaryspectral type or age T, ranging from about 50,000 AU for OB primaries to1000 AU for G dwarfs. If stars have an observed binary separation ofabout 5000 AU, it is unlikely that the sun would have a stellarcompanion at 92,000 AU. A Ba II star with a physical companion, a starwith strong double Ca II emission lines, and a chance projection of anearby quadruple hierarchical system on a distant triple hierarchicalsystem is discussed.

Enviar un nuevo artículo


Enlaces relacionados

  • - No se han encontrado enlaces -
En viar un nuevo enlace


Miembro de los siguientes grupos:


Datos observacionales y astrométricos

Constelación:Virgo
Ascensión Recta:12h52m31.64s
Declinación:+07°12'30.3"
Magnitud Aparente:9.366
Movimiento Propio en Ascensión Recta:-36.3
Movimiento Propio en Declinación:13.5
B-T magnitude:11.132
V-T magnitude:9.512

Catálogos y designaciones:
Nombres Propios
TYCHO-2 2000TYC 297-281-1
USNO-A2.0USNO-A2 0900-07254392
HIPHIP 62831

→ Solicitar más catálogos y designaciones a VizieR