Optical image of the Milky Way (360 degrees)
Download
1 / 32

Optical image of the Milky Way (360 degrees) - PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on

Optical image of the Milky Way (360 degrees). Kapteyn (1922). Shapley (1919). COBE near-infrared image of the Milky Way. NGC 891. Magellanic clouds. Fornax dwarf galaxy. Leo I dwarf galaxy. M31 = Andromeda galaxy + NGC 205 + M32 (+ Moon, for scale).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Optical image of the Milky Way (360 degrees)' - drew


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript








M31 =

Andromeda galaxy

+ NGC 205 + M32

(+ Moon, for scale)



Semimajor axis = 950 AU

Pericenter = 120 AU






Van Albada et al. (1985)

why doesn’t “disk” plus “halo” add up to total?






Ten nearest stars Ten brightest stars


SDSS galaxy counts brightest stars

Yasuda et al. (2001)


Gamma-ray burst counts brightest stars

Fishman & Meegan (1995)


Reid et al. (2002) brightest stars

red = no correction for binaries

green = corrected for binaries

purple = Wielen et al. (1983)


The mass-luminosity relation for main-sequence stars brightest stars

(Reid et al. 2002)

Sun


Mass function in the solar neighborhood brightest stars

dN = ξ(m) d log m = n(m)dm

dN  dm/m


Initial mass function in the solar neighborhood brightest stars

dN = ξ(m) d log m = n(m)dm

dN  dm/m2.35 (Salpeter)



ad