Cover Image

The MAGIC project - II. Discovery of two new Galactic lithium-rich Cepheids

We report the discovery of two new lithium-rich Cepheids in the Milky Way (A(Li) ≈ 2.9 dex) among the targets of the MAGIC spectroscopic survey with the Southern African Large Telescope spectrographs. The 6707 Å Li feature is usually not detectable in the atmosphere of Cepheids. Only three Cepheids...

Full description

Saved in:
Bibliographic Details
Main Authors: Kovtyukh, Valery (Author) , Lemasle, Bertrand (Author) , Grebel, Eva K. (Author)
Format: Article (Journal)
Language:English
Published: 22 July 2019
In: Monthly notices of the Royal Astronomical Society
Year: 2019, Volume: 488, Issue: 3, Pages: 3211-3221
ISSN:1365-2966
DOI:10.1093/mnras/stz1872
Online Access:Verlag, Volltext: https://doi.org/10.1093/mnras/stz1872
Verlag: https://academic.oup.com/mnras/article/488/3/3211/5536945
Get full text
Author Notes:V. Kovtyukh, B. Lemasle, A. Kniazev, L. Berdnikov, G. Bono, I. Usenko, E.K. Grebel, G. Hajdu and E. Pastukhova

MARC

LEADER 00000caa a2200000 c 4500
001 1678655147
003 DE-627
005 20220817000500.0
007 cr uuu---uuuuu
008 191010s2019 xx |||||o 00| ||eng c
024 7 |a 10.1093/mnras/stz1872  |2 doi 
035 |a (DE-627)1678655147 
035 |a (DE-599)KXP1678655147 
035 |a (OCoLC)1341245273 
040 |a DE-627  |b ger  |c DE-627  |e rda 
041 |a eng 
084 |a 29  |2 sdnb 
100 1 |a Kovtyukh, Valery  |e VerfasserIn  |0 (DE-588)1177085151  |0 (DE-627)1048358224  |0 (DE-576)517283972  |4 aut 
245 1 4 |a The MAGIC project - II. Discovery of two new Galactic lithium-rich Cepheids  |c V. Kovtyukh, B. Lemasle, A. Kniazev, L. Berdnikov, G. Bono, I. Usenko, E.K. Grebel, G. Hajdu and E. Pastukhova 
264 1 |c 22 July 2019 
300 |a 11 
336 |a Text  |b txt  |2 rdacontent 
337 |a Computermedien  |b c  |2 rdamedia 
338 |a Online-Ressource  |b cr  |2 rdacarrier 
500 |a Gesehen am 10.10.2019 
520 |a We report the discovery of two new lithium-rich Cepheids in the Milky Way (A(Li) ≈ 2.9 dex) among the targets of the MAGIC spectroscopic survey with the Southern African Large Telescope spectrographs. The 6707 Å Li feature is usually not detectable in the atmosphere of Cepheids. Only three Cepheids (two in the Milky Way and one in the Large Magellanic Cloud) had been reported so far with high lithium abundances. We examine the possibility that the Li-rich Cepheids are evolving towards the red giant branch, crossing the instability strip for the first time, as well as other possible scenarios. The two stars are mixed-mode Cepheids pulsating simultaneously in the first and in the second overtone modes. We briefly discuss the possible connection between their unusual chemical composition and their pulsational properties. 
700 1 |a Lemasle, Bertrand  |e VerfasserIn  |0 (DE-588)1142258106  |0 (DE-627)1001430220  |0 (DE-576)494750596  |4 aut 
700 1 |a Grebel, Eva K.  |d 1966-  |e VerfasserIn  |0 (DE-588)1020239085  |0 (DE-627)691153221  |0 (DE-576)359782833  |4 aut 
773 0 8 |i Enthalten in  |a Royal Astronomical Society  |t Monthly notices of the Royal Astronomical Society  |d Oxford : Oxford Univ. Press, 1827  |g 488(2019), 3, Seite 3211-3221  |h Online-Ressource  |w (DE-627)314059164  |w (DE-600)2016084-7  |w (DE-576)090955420  |x 1365-2966  |7 nnas 
773 1 8 |g volume:488  |g year:2019  |g number:3  |g pages:3211-3221  |g extent:11  |a The MAGIC project - II. Discovery of two new Galactic lithium-rich Cepheids 
856 4 0 |u https://doi.org/10.1093/mnras/stz1872  |x Verlag  |x Resolving-System  |3 Volltext 
856 4 0 |u https://academic.oup.com/mnras/article/488/3/3211/5536945  |x Verlag 
951 |a AR 
992 |a 20191010 
993 |a Article 
994 |a 2019 
998 |g 1020239085  |a Grebel, Eva K.  |m 1020239085:Grebel, Eva K.  |d 700000  |d 714000  |d 714100  |e 700000PG1020239085  |e 714000PG1020239085  |e 714100PG1020239085  |k 0/700000/  |k 1/700000/714000/  |k 2/700000/714000/714100/  |p 7 
998 |g 1142258106  |a Lemasle, Bertrand  |m 1142258106:Lemasle, Bertrand  |d 500000  |d 500881  |e 500000PL1142258106  |e 500881PL1142258106  |k 0/500000/  |k 1/500000/500881/  |p 2 
999 |a KXP-PPN1678655147  |e 352110124X 
BIB |a Y 
SER |a journal 
JSO |a {"name":{"displayForm":["V. Kovtyukh, B. Lemasle, A. Kniazev, L. Berdnikov, G. Bono, I. Usenko, E.K. Grebel, G. Hajdu and E. Pastukhova"]},"id":{"eki":["1678655147"],"doi":["10.1093/mnras/stz1872"]},"origin":[{"dateIssuedDisp":"22 July 2019","dateIssuedKey":"2019"}],"relHost":[{"physDesc":[{"extent":"Online-Ressource"}],"id":{"issn":["1365-2966"],"eki":["314059164"],"doi":["10.1111/(ISSN)1365-2966"],"zdb":["2016084-7"]},"origin":[{"publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]","dateIssuedDisp":"1827-","dateIssuedKey":"1827","publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell"}],"recId":"314059164","language":["eng"],"corporate":[{"display":"Royal Astronomical Society","roleDisplay":"VerfasserIn","role":"aut"}],"type":{"media":"Online-Ressource","bibl":"periodical"},"disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","note":["Gesehen am 15.01.2018"],"part":{"volume":"488","text":"488(2019), 3, Seite 3211-3221","extent":"11","year":"2019","pages":"3211-3221","issue":"3"},"pubHistory":["1.1827 -"],"title":[{"title_sort":"Monthly notices of the Royal Astronomical Society","title":"Monthly notices of the Royal Astronomical Society"}]}],"physDesc":[{"extent":"11 S."}],"person":[{"family":"Kovtyukh","given":"Valery","roleDisplay":"VerfasserIn","display":"Kovtyukh, Valery","role":"aut"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Lemasle, Bertrand","given":"Bertrand","family":"Lemasle"},{"family":"Grebel","given":"Eva K.","roleDisplay":"VerfasserIn","display":"Grebel, Eva K.","role":"aut"}],"title":[{"title":"The MAGIC project - II. Discovery of two new Galactic lithium-rich Cepheids","title_sort":"MAGIC project - II. Discovery of two new Galactic lithium-rich Cepheids"}],"recId":"1678655147","language":["eng"],"note":["Gesehen am 10.10.2019"],"type":{"media":"Online-Ressource","bibl":"article-journal"}} 
SRT |a KOVTYUKHVAMAGICPROJE2220 

Similar Items