2007A&A...462..965M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST12:08:19

2007A&A...462..965M - Astronomy and Astrophysics, volume 462, 965-976 (2007/2-2)

The surface brightness of the Galaxy at the solar neighbourhood.

MELCHIOR A.-L., COMBES F. and GOULD A.

Abstract (from CDS):

We present a new determination of the surface brightness of our Galaxy at the Solar Neighbourhood as observed from outside the Galaxy. We rely on various existing optical and infra-red surveys to obtain a multiwavelength estimate. On the one hand, scattered light does not contribute significantly to the surface brightness. On the other hand, optical and infrared integrated all-sky surveys (Pioneer 10/11 and COBE/DIRBE) show a systematically larger value than our synthetic local estimate based on Hipparcos data. This local estimate is also compatible with our Galactic simulations normalised at the Solar Neighbourhood and assuming a homogeneous stellar distribution. We interpret this disagreement as a signature of the presence of a local minimum of the stellar density compatible with Gould's belt. According to this result, the global luminosity of the Milky Way should follow the Tully-Fisher relation established for external galaxies.

Abstract Copyright:

Journal keyword(s): Galaxy: solar neighbourhood - cosmology: diffuse radiation - radiation mechanisms: thermal - methods: data analysis - ISM: general

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Gal Anticenter reg 05 46 +28.9           ~ 737 0
2 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11760 0
3 NAME Gould Belt PoG ~ ~           ~ 724 1

    Equat.    Gal    SGal    Ecl

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2020.10.24-12:08:19

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