Photometric Stromgren-H beta Quantification for O and B Stars
of Luminosity Class V

J 2017

Photometric Stromgren-H beta Quantification for O and B Stars of Luminosity Class V

KALTCHEVA, Nadia, Valeri GOLEV a Ernst PAUNZEN

Základní údaje

Originální název

Photometric Stromgren-H beta Quantification for O and B Stars of Luminosity Class V

Autoři

KALTCHEVA, Nadia (840 Spojené státy), Valeri GOLEV (100 Bulharsko) a Ernst PAUNZEN (40 Rakousko, garant, domácí)

Vydání

Publications of the Astronomical Society of the Pacific, Bristol, IOP PUBLISHING LTD, 2017, 0004-6280

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 3.409

Kód RIV

RIV/00216224:14310/17:00099901

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1088/1538-3873/aa8cbd

UT WoS

000412416800001

Klíčová slova anglicky

stars: early-type; techniques: photometric; stars: fundamental parameters

Štítky

NZ, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 10. 4. 2018 15:17, Ing. Nicole Zrilić

Anotace

V originále

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.

Citovat

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.

@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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