Počet záznamů: 1
The circumstellar environments of B[e] Supergiants
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SYSNO ASEP 0485384 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV Záznam nebyl označen do RIV Název The circumstellar environments of B[e] Supergiants Tvůrce(i) Maravelias, Grigorios (ASU-R) ORCID
Kraus, Michaela (ASU-R) RID, ORCID
Cidale, L.S. (AR)
Arias, M.L. (AR)
Aret, Anna (ASU-R) ORCID
Borges Fernandes, M. (BR)Zdroj.dok. The Lives and Death-Throes of Massive Star. - Cambridge : Cambridge University Press, 2017 - ISSN 1743-9213 - ISBN 9781107170063 Rozsah stran s. 421-421 Poč.str. 1 s. Forma vydání Tištěná - P Akce Symposium of the International Astronomical Union /329./ Datum konání 28.11.2016 - 02.12.2016 Místo konání Auckland Země NZ - Nový Zéland Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova stars ; circumstellar matter ; emission-line Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GA14-21373S GA ČR - Grantová agentura ČR Institucionální podpora ASU-R - RVO:67985815 UT WOS 000455603400100 DOI 10.1017/S1743921317002605 Anotace The evolution of massive stars encompasses short-lived transition phases in which mass-loss is more enhanced and usually eruptive. A complex environment, combining atomic, molecular and dust regions, is formed around these stars. In particular, the circumstellar environment of B[e] Supergiants is not well understood. To address that, we have initiated a campaign to investigate their environments for a sample of Galactic and Magellanic Cloud sources. Using high-resolution optical and near-infrared spectra (MPG-ESO/FEROS, GEMINI/Phoenix and VLT/CRIRES, respectively), we examine a set of emission features ([OI], [CaII], CO bandheads) to trace the physical conditions and kinematics in their formation regions. We find that the B[e] Supergiants are surrounded by a series of rings of different temperatures and densities, a probable result of previous mass-loss events. In many cases the CO forms very close to the star, while we notice also an alternate mixing of densities and temperatures (which give rise to the different emission features) along the equatorial plane. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2018
Počet záznamů: 1