Principal     Comenzar     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astrofotografía     La Colección     Foro     Blog New!     FAQ     Prensa     Login  

HD 178719


Contenidos

Imágenes

Subir su imagen

DSS Images   Other Images


Artículos relacionados

A photometric investigation of RV Tauri and yellow semiregular variables
Results are presented for DDO and UBV photoelectric photometry of 52 RVTau and semiregular variables and candidates. CN abundances, effectivetemperatures, surface gravities, absolute visual magnitudes, and massestimates are derived in the framework of the spectroscopic groupingsproposed by Preston et al. (1963). The photometry suggests a furtherdivision of Preston's group A, and a possible physical connection isindicated between this group and the semiregular variables. Thespectroscopic groups are shown to be well separated in the DDOcolor-color diagrams when mean colors are used for individual stars. Anupper limit of about 3 solar masses is determined for stars in eachgroup. A correlation between derived iron abundances and published IRexcesses obtained from flux measurements at 3.6 and 11.3 microns isfound which supports the contention that dust production incircumstellar shells increases with increasing metallicity.

Light and radial velocity observations of classical Cepheids
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976ApJS...32..399E&db_key=AST

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:Águila
Ascensión Recta:19h09m42.14s
Declinación:+01°14'05.0"
Magnitud Aparente:8.832
Distancia:84.602 parsecs
Movimiento Propio en Ascensión Recta:-21.3
Movimiento Propio en Declinación:-141.7
B-T magnitude:9.766
V-T magnitude:8.91

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 178719
TYCHO-2 2000TYC 463-1480-1
USNO-A2.0USNO-A2 0900-14043659
HIPHIP 94131

→ Solicitar más catálogos y designaciones a VizieR