KALTCHEVA, Nadia, Valeri GOLEV a Ernst PAUNZEN. Photometric Stromgren-H beta Quantification for O and B Stars of Luminosity Class V. Publications of the Astronomical Society of the Pacific. Bristol: IOP PUBLISHING LTD, 2017, roč. 129, č. 981, s. 114201-114210. ISSN 0004-6280. Dostupné z: https://dx.doi.org/10.1088/1538-3873/aa8cbd. |
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@article{1406903, author = {Kaltcheva, Nadia and Golev, Valeri and Paunzen, Ernst}, article_location = {Bristol}, article_number = {981}, doi = {http://dx.doi.org/10.1088/1538-3873/aa8cbd}, keywords = {stars: early-type; techniques: photometric; stars: fundamental parameters}, language = {eng}, issn = {0004-6280}, journal = {Publications of the Astronomical Society of the Pacific}, title = {Photometric Stromgren-H beta Quantification for O and B Stars of Luminosity Class V}, volume = {129}, year = {2017} }
TY - JOUR ID - 1406903 AU - Kaltcheva, Nadia - Golev, Valeri - Paunzen, Ernst PY - 2017 TI - Photometric Stromgren-H beta Quantification for O and B Stars of Luminosity Class V JF - Publications of the Astronomical Society of the Pacific VL - 129 IS - 981 SP - 114201-114210 EP - 114201-114210 PB - IOP PUBLISHING LTD SN - 00046280 KW - stars: early-type KW - techniques: photometric KW - stars: fundamental parameters N2 - In any photometric system, the relationship between the spectral type and the intrinsic colors is fundamental for the photometric stellar classification and for a reliable derivation of stellar parameters. Such relationships are being constantly verified and improved based on larger and better samples. The capability of the Stromgren-H beta photometry to provide reddening-free quantities allows the classification of reddened stars over the entire spectral sequence. However, a detailed consistent tabulation of the uvby beta quantities for the O-B9 part of the main sequence is currently warranted. We combine spectral types and photometry from the literature to provide a new empirical tabulation of the intrinsic color b - y, color differences c(1), m(1), [c(1)] and [m(1)] and the H beta index for main-sequence (luminosity class V) stars of spectral types O4.5 through B9.5 in terms of spectral sub-types. Our survey is based on more than 1400 stars. We use the established c(1) versus b - y intrinsic line and the accepted reddening slopes to obtain dereddened quantities and then calculate their median values as a function of the spectral sub-type. The classification ability of the system in this spectral range is reliable and the photometric quantities are not affected by the stellar rotation. ER -
KALTCHEVA, Nadia, Valeri GOLEV a Ernst PAUNZEN. Photometric Stromgren-H beta Quantification for O and B Stars of Luminosity Class V. \textit{Publications of the Astronomical Society of the Pacific}. Bristol: IOP PUBLISHING LTD, 2017, roč.~129, č.~981, s.~114201-114210. ISSN~0004-6280. Dostupné z: https://dx.doi.org/10.1088/1538-3873/aa8cbd.
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