Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27806
Title: | New photometric and spectroscopic observations of 53 Per | Authors: | Niemczura, Ewa Pigulski, Andrzej Kamińska, Monika K. Kamiński, Krzysztof Lehmann, Holger Hełminiak, Krzysztof G. CATANZARO, Giovanni Stateva, Ivanka Napetova, Mirela Różański, Tomasz |
Issue Date: | 2018 | Journal: | PROCEEDINGS OF THE POLISH ASTRONOMICAL SOCIETY | Volume: | XXXVIII Polish Astronomical Society Meeting | Editors: | Różańska, Agata | Number: | 7 | First Page: | 162 | Abstract: | We present the analysis of the variability of the SPB-type star 53 Per based on space photometry from BRITE-Constellation nano-satellites and SMEI-Coriolis experiment. The two photometries allowed us to detect 17 independent sinusoidal terms in the range 0.2 - 1.4 d^{-1} plus one combination, and one harmonic. The independent terms can be attributed to g modes excited in this star. Only three of these modes have been known earlier. In addition, we gathered almost 3500 new mid- and high-resolution spectra of 53 Per, which were used to calculate radial velocities. The frequency spectrum of the time-series radial-velocity data revealed four independent terms and one combination, all consistent with the frequencies detected in BRITE and SMEI photometry. The high-resolution and high signal-to-noise averaged spectrum was used to obtain atmospheric parameters of 53 Per, T_eff = 15600 ± 400 K and log (g/(cm s^{-2}))= 3.85 ± 0.10. | Conference Name: | XXXVIII Polish Astronomical Society Meeting | Conference Place: | Zielona Góra, Poland | Conference Date: | 11–14 September, 2017 | URI: | http://hdl.handle.net/20.500.12386/27806 | URL: | https://www.pta.edu.pl/proc/v7p162 https://www.pta.edu.pl/proc/v7p1 |
ISSN: | 2545-1022 | ISBN: | 978-83-950430-0-0 | Bibcode ADS: | 2018pas7.conf..162N | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
v7p162.pdf | Pdf editoriale | 451.46 kB | Adobe PDF | View/Open |
Page view(s)
46
checked on Apr 23, 2024
Download(s)
15
checked on Apr 23, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.