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2002ApJ...567..277B - Astrophys. J., 567, 277-288 (2002/March-1)
Spectroscopy of blue supergiants in the spiral galaxy NGC 300.
BRESOLIN F., GIEREN W., KUDRITZKI R.-P., PIETRZYNSKI G. and PRZYBILLA N.
Abstract (from CDS):
Using the Balmer Hβ line profile, we have estimated the mass-loss rate for one of the brightest A2 supergiants in the sample. Under additional reasonable assumptions, we determined the wind momentum of the star and compared it with the value expected from the empirical wind momentum-luminosity relationship (WLR) for A-type supergiants of Kudritzki et al. Good agreement is obtained. We will derive mass-loss rates and wind momenta for all stars in our sample from the Hα line profiles in forthcoming work, and we will then thoroughly test the usefulness of the WLR for distance measurement out to about 15 Mpc.
Abstract Copyright: ∼
Journal keyword(s): galaxies: individual (NGC 300) - Galaxies: Stellar Content - Stars: Early-Type - Stars: Winds, Outflows
Nomenclature: Table 2: [BGK2002] ANN (Nos A1-A19, B1-B19, C1-C19, D1-D18).
Simbad objects: 85