Contingut
Imatges
Carregar la teva Imatge
DSS Images Other Images
Articles Relacionats
Infrared observations of metal-deficient stars
Infrared magnitudes in the J, H, K and L bands for 64 metal-deficientstars spanning a wide range in effective temperature, luminosity andmetal content are presented. An accuracy of 0.02 magnitude is obtainedfor the JHK bands and 0.03 for the L filter. Infrared-infrared andoptical-infrared color-color diagrams are discussed and compared withthe mean intrinsic tracks for Population I stars. It is concluded thatinfrared colors are not notably dependent on metallicity, with someexceptions for the reddest giants, which can be also interpreted byresidual effects in the transformation equations between differentsystems. The near infrared photometric system of the Observatorio delTeide, from the Instituto de Astrofisica de Canarias, is also brieflydiscussed.
|
Enviar un nou article
Enllaços Relacionats
- - No s'ha trobat enllaços -
Enviar un nou enllaç
Membre dels grups següents:
|
Dades d'Observació i Astrometria
| Constel·lació: | Octans |
| Ascensió Recta: | 01h50m16.57s |
| Declinació: | -87°13'42.6" |
| Magnitud Aparent: | 9.209 |
| Moviment propi RA: | -24.5 |
| Moviment propi Dec: | -22.7 |
| B-T magnitude: | 9.868 |
| V-T magnitude: | 9.264 |
Catàlegs i designacions:
|
