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Searching for the brightest stars in galaxies outside the Local Group. / Tikhonov, Nikolay; Galazutdinova, Olga; Sholukhova, Olga; Valcheva, Antoniya; Nedialkov, Petko; Merkulova, Olga.

In: Research in Astronomy and Astrophysics, Vol. 21, No. 4, 098, 05.2021.

Research output: Contribution to journal › Article › peer-review

Harvard

Tikhonov, N, Galazutdinova, O, Sholukhova, O, Valcheva, A, Nedialkov, P & Merkulova, O 2021, 'Searching for the brightest stars in galaxies outside the Local Group', Research in Astronomy and Astrophysics, vol. 21, no. 4, 098. https://doi.org/10.1088/1674-4527/21/4/98

APA

Tikhonov, N., Galazutdinova, O., Sholukhova, O., Valcheva, A., Nedialkov, P., & Merkulova, O. (2021). Searching for the brightest stars in galaxies outside the Local Group. Research in Astronomy and Astrophysics, 21(4), [098]. https://doi.org/10.1088/1674-4527/21/4/98

Vancouver

Tikhonov N, Galazutdinova O, Sholukhova O, Valcheva A, Nedialkov P, Merkulova O. Searching for the brightest stars in galaxies outside the Local Group. Research in Astronomy and Astrophysics. 2021 May;21(4). 098. https://doi.org/10.1088/1674-4527/21/4/98

Author

Tikhonov, Nikolay ; Galazutdinova, Olga ; Sholukhova, Olga ; Valcheva, Antoniya ; Nedialkov, Petko ; Merkulova, Olga. / Searching for the brightest stars in galaxies outside the Local Group. In: Research in Astronomy and Astrophysics. 2021 ; Vol. 21, No. 4.

BibTeX

@article{abed4addefeb48ee87b787d279389e58,
title = "Searching for the brightest stars in galaxies outside the Local Group",
abstract = "This paper introduces a technique for searching for bright massive stars in galaxies beyond the Local Group. To search for massive stars, we processed the results of stellar photometry from the Hubble Space Telescope (HST) images using the DAOPHOT and DOLPHOT packages. The results of such searches are demonstrated with examples of the galaxies DDO 68, M94 and NGC 1672. In the galaxy DDO 68, the LBV star changes its brightness, and massive stars in M94 can be identified by excess in the Hα band. For the galaxy NGC 1672, we measure the distance for the first time by the TRGB method, which enabled determining the luminosities of the brightest stars, likely hypergiants, in the young star formation region. So far, we have performed stellar photometry on HST images of 320 northern sky galaxies located at a distance less than 12 Mpc. This allowed us to identify 53 galaxies with probable hypergiants. Further photometric and spectral observations of these galaxies are planned to search for massive stars. ",
keywords = "DDO 68, individual, LBV galaxies, M94, massive stars, NGC 1672, stars, variables, LBV, galaxies, M31, massive, CANDIDATES",
author = "Nikolay Tikhonov and Olga Galazutdinova and Olga Sholukhova and Antoniya Valcheva and Petko Nedialkov and Olga Merkulova",
note = "Publisher Copyright: {\textcopyright} 2021 National Astronomical Observatories, CAS and IOP Publishing Ltd..",
year = "2021",
month = may,
doi = "10.1088/1674-4527/21/4/98",
language = "English",
volume = "21",
journal = "Research in Astronomy and Astrophysics",
issn = "1674-4527",
publisher = "IOP Publishing Ltd.",
number = "4",

}

RIS

TY - JOUR

T1 - Searching for the brightest stars in galaxies outside the Local Group

AU - Tikhonov, Nikolay

AU - Galazutdinova, Olga

AU - Sholukhova, Olga

AU - Valcheva, Antoniya

AU - Nedialkov, Petko

AU - Merkulova, Olga

N1 - Publisher Copyright: © 2021 National Astronomical Observatories, CAS and IOP Publishing Ltd..

PY - 2021/5

Y1 - 2021/5

N2 - This paper introduces a technique for searching for bright massive stars in galaxies beyond the Local Group. To search for massive stars, we processed the results of stellar photometry from the Hubble Space Telescope (HST) images using the DAOPHOT and DOLPHOT packages. The results of such searches are demonstrated with examples of the galaxies DDO 68, M94 and NGC 1672. In the galaxy DDO 68, the LBV star changes its brightness, and massive stars in M94 can be identified by excess in the Hα band. For the galaxy NGC 1672, we measure the distance for the first time by the TRGB method, which enabled determining the luminosities of the brightest stars, likely hypergiants, in the young star formation region. So far, we have performed stellar photometry on HST images of 320 northern sky galaxies located at a distance less than 12 Mpc. This allowed us to identify 53 galaxies with probable hypergiants. Further photometric and spectral observations of these galaxies are planned to search for massive stars.

AB - This paper introduces a technique for searching for bright massive stars in galaxies beyond the Local Group. To search for massive stars, we processed the results of stellar photometry from the Hubble Space Telescope (HST) images using the DAOPHOT and DOLPHOT packages. The results of such searches are demonstrated with examples of the galaxies DDO 68, M94 and NGC 1672. In the galaxy DDO 68, the LBV star changes its brightness, and massive stars in M94 can be identified by excess in the Hα band. For the galaxy NGC 1672, we measure the distance for the first time by the TRGB method, which enabled determining the luminosities of the brightest stars, likely hypergiants, in the young star formation region. So far, we have performed stellar photometry on HST images of 320 northern sky galaxies located at a distance less than 12 Mpc. This allowed us to identify 53 galaxies with probable hypergiants. Further photometric and spectral observations of these galaxies are planned to search for massive stars.

KW - DDO 68

KW - individual

KW - LBV galaxies

KW - M94

KW - massive stars

KW - NGC 1672

KW - stars

KW - variables

KW - LBV

KW - galaxies

KW - M31

KW - massive

KW - CANDIDATES

UR - http://www.scopus.com/inward/record.url?scp=85107764939&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/5d2d7dc6-0540-3b44-a10a-cecb847772c7/

U2 - 10.1088/1674-4527/21/4/98

DO - 10.1088/1674-4527/21/4/98

M3 - Article

AN - SCOPUS:85107764939

VL - 21

JO - Research in Astronomy and Astrophysics

JF - Research in Astronomy and Astrophysics

SN - 1674-4527

IS - 4

M1 - 098

ER -

ID: 86508040