Cover Image

Chemical abundances in a high velocity RR Lyrae star near the bulge

Show other versions (1)

Low-mass, variable, high-velocity stars are interesting study cases for many aspects of Galactic structure and evolution. Until recently, the only known high- or hyper-velocity stars were young stars thought to originate from the Galactic centre. Wide-area surveys like APOGEE and BRAVA have found se...

Full description

Saved in:
Bibliographic Details
Main Authors: Hansen, Camilla Juul (Author) , Koch-Hansen, Andreas (Author) , Ludwig, Hans-Günter (Author)
Format: Article (Journal) Chapter/Article
Language:English
Published: March 21, 2016
In: Arxiv

Online Access:Verlag, kostenfrei, Volltext: http://arxiv.org/abs/1603.05654
Get full text
Author Notes:Camilla Juul Hansen, Robert Michael Rich, Andreas Koch, Siyi Xu, Andrea Kunder, Hans-Guenter Ludwig

MARC

LEADER 00000caa a2200000 c 4500
001 1564380351
003 DE-627
005 20220814002259.0
007 cr uuu---uuuuu
008 171013s2016 xx |||||o 00| ||eng c
035 |a (DE-627)1564380351 
035 |a (DE-576)494380357 
035 |a (DE-599)BSZ494380357 
035 |a (OCoLC)1340980609 
040 |a DE-627  |b ger  |c DE-627  |e rda 
041 |a eng 
084 |a 29  |2 sdnb 
100 1 |a Hansen, Camilla Juul  |d 1982-  |e VerfasserIn  |0 (DE-588)1011341824  |0 (DE-627)658459635  |0 (DE-576)341310123  |4 aut 
245 1 0 |a Chemical abundances in a high velocity RR Lyrae star near the bulge  |c Camilla Juul Hansen, Robert Michael Rich, Andreas Koch, Siyi Xu, Andrea Kunder, Hans-Guenter Ludwig 
264 1 |c March 21, 2016 
300 |a 9 
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 13.10.2017 
520 |a Low-mass, variable, high-velocity stars are interesting study cases for many aspects of Galactic structure and evolution. Until recently, the only known high- or hyper-velocity stars were young stars thought to originate from the Galactic centre. Wide-area surveys like APOGEE and BRAVA have found several low-mass stars in the bulge with Galactic rest-frame velocities larger than 350 km/s. In this study we present the first abundance analysis of a low-mass, RR Lyrae star, located close to the Galactic bulge, with a space motion of ~ -400 km/s. Using medium-resolution spectra, we derive abundances (including upper limits) of 11 elements. These allow us to chemically tag the star and discuss its origin, although our derived abundances and metallicity, at [Fe/H] =-0.9 dex, do not point toward one unambiguous answer. Based on the chemical tagging, we cannot exclude that it originated in the bulge. However, combining its retrograde orbit and the derived abundances suggests that the star was accelerated from the outskirts of the inner (or even outer) halo during many-body interactions. Other possible origins include the bulge itself, or the star could be stripped from a star cluster or the Sagittarius dwarf galaxy when it merged with the Milky Way. 
650 4 |a Astrophysics - Astrophysics of Galaxies 
650 4 |a Astrophysics - Solar and Stellar Astrophysics 
700 1 |a Koch-Hansen, Andreas  |e VerfasserIn  |0 (DE-588)1020368721  |0 (DE-627)691194025  |0 (DE-576)360232671  |4 aut 
700 1 |a Ludwig, Hans-Günter  |d 1962-  |e VerfasserIn  |0 (DE-588)120980568  |0 (DE-627)705135152  |0 (DE-576)292479476  |4 aut 
773 0 8 |i Enthalten in  |t Arxiv  |d Ithaca, NY : Cornell University, 1991  |g (2016) Artikel-Nummer 1603.05654, 9 Seiten  |h Online-Ressource  |w (DE-627)509006531  |w (DE-600)2225896-6  |w (DE-576)28130436X  |7 nnas  |a Chemical abundances in a high velocity RR Lyrae star near the bulge 
773 1 8 |g year:2016  |g extent:9  |a Chemical abundances in a high velocity RR Lyrae star near the bulge 
856 4 0 |u http://arxiv.org/abs/1603.05654  |x Verlag  |z kostenfrei  |3 Volltext 
951 |a AR 
992 |a 20171013 
993 |a Article 
998 |g 120980568  |a Ludwig, Hans-Günter  |m 120980568:Ludwig, Hans-Günter  |d 700000  |d 714000  |d 714300  |e 700000PL120980568  |e 714000PL120980568  |e 714300PL120980568  |k 0/700000/  |k 1/700000/714000/  |k 2/700000/714000/714300/  |p 6  |y j 
998 |g 1020368721  |a Koch-Hansen, Andreas  |m 1020368721:Koch-Hansen, Andreas  |d 700000  |d 714000  |d 714300  |e 700000PK1020368721  |e 714000PK1020368721  |e 714300PK1020368721  |k 0/700000/  |k 1/700000/714000/  |k 2/700000/714000/714300/  |p 3 
998 |g 1011341824  |a Hansen, Camilla Juul  |m 1011341824:Hansen, Camilla Juul  |p 1  |x j 
999 |a KXP-PPN1564380351  |e 2983968499 
BIB |a Y 
JSO |a {"physDesc":[{"extent":"9 S."}],"title":[{"title":"Chemical abundances in a high velocity RR Lyrae star near the bulge","title_sort":"Chemical abundances in a high velocity RR Lyrae star near the bulge"}],"relHost":[{"physDesc":[{"extent":"Online-Ressource"}],"title":[{"title_sort":"Arxiv","title":"Arxiv"}],"part":{"extent":"9","text":"(2016) Artikel-Nummer 1603.05654, 9 Seiten","year":"2016"},"pubHistory":["1991 -"],"note":["Gesehen am 28.05.2024"],"titleAlt":[{"title":"Arxiv.org"},{"title":"Arxiv.org e-print archive"},{"title":"Arxiv e-print archive"},{"title":"De.arxiv.org"}],"language":["eng"],"disp":"Chemical abundances in a high velocity RR Lyrae star near the bulgeArxiv","origin":[{"dateIssuedDisp":"1991-","dateIssuedKey":"1991","publisherPlace":"Ithaca, NY ; [Erscheinungsort nicht ermittelbar]","publisher":"Cornell University ; Arxiv.org"}],"recId":"509006531","id":{"zdb":["2225896-6"],"eki":["509006531"]},"type":{"media":"Online-Ressource","bibl":"edited-book"}}],"person":[{"family":"Hansen","role":"aut","display":"Hansen, Camilla Juul","given":"Camilla Juul"},{"given":"Andreas","display":"Koch-Hansen, Andreas","role":"aut","family":"Koch-Hansen"},{"display":"Ludwig, Hans-Günter","family":"Ludwig","role":"aut","given":"Hans-Günter"}],"note":["Gesehen am 13.10.2017"],"language":["eng"],"name":{"displayForm":["Camilla Juul Hansen, Robert Michael Rich, Andreas Koch, Siyi Xu, Andrea Kunder, Hans-Guenter Ludwig"]},"origin":[{"dateIssuedDisp":"March 21, 2016","dateIssuedKey":"2016"}],"id":{"eki":["1564380351"]},"recId":"1564380351","type":{"media":"Online-Ressource","bibl":"chapter"}} 
SRT |a HANSENCAMICHEMICALAB2120 

Similar Items