Other
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8372w&link_type=abstract
HST Proposal ID #8372
Other
Hst Proposal Id #8372 Field Stellar Populations
Scientific paper
The HST archive contains numerous exposures in HAlpha and continuum light of nearby {< 10 Mpc} galaxies. We propose to analyze these archival images to create a database of massive stars with high mass-loss rates for galaxies of different Hubble types. The catalog is expected to include candidate Luminous Blue Variables {cLBV}, Be stars and possibly some Wolf-Rayet stars. The HST data are unique for several reasons: 1} the high spatial resolution and inclusion of continuum exposures allows us to extend successful ground-based searches for stars with high mass loss rates in the MCs, M31 and M33 out to ten times larger distances. Their HAlpha luminosities and continuum emission provide estimates of the mass loss rates; 2} for galaxies out to a few Mpc, the high resolution allows a search for resolved nebulae possibly indicating eruptive mass loss; such nebulae are known to exist around LBVs in the Galaxy and the LMC; and 3} data are available for different galaxy types with a range of metallicities which will ultimately help in testing the ``Conti scenario'' for massive stellar evolution. The number of cLBVs and other extreme mass-loss stars we expect to find, ranges from a few in the closest galaxies to as much as 50 in M101. Finding these objects is an important first step in shedding light on the poorly understood post-main sequence evolution of massive stars.
No associations
LandOfFree
Massive emission-line stars in nearby galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Massive emission-line stars in nearby galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Massive emission-line stars in nearby galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-993387