Distance Determination to M33 with FGLR
An application of the flux-weighted gravity - luminosity relation (FGLR), a spectroscopic distance determination technique proven successful for finding the distance modulus to other galaxies (e.g. Urbaneja et al. 2008; Kudritzki et al. 2008), is presented in the case of M33. We analyze a sample of 17 BA-type supergiants spanning the face-on view of the Triangulum Galaxy using highresolution DEIMOS spectra. A quantitative spectroscopic study described here aUows us to derive atmospheric parameters such as effective temperature, surface gravity, and metallicity. Along with dereddened absolute bolometric magnitude, the tight linear relationship among these quantities gives us a measurement of the distance modulus μ = 24.87 ± 0.11 for M33.
supergiants galaxies distances and redshifts galaxies individual (M33)
Vivian U Miguel A. Urbaneja Rolf P.Kudritzki Fabio Bresolin
Institute for Astronomy, University of Hawaii, Honolulu, HI, USA
国际会议
The 10th Asian-Pacific Regional International Astronomical Union Meeting(第十届亚洲及太平洋地区天文学大会 APRIM)
昆明
英文
167-168
2008-08-03（万方平台首次上网日期，不代表论文的发表时间）