SIMBAD references

2018MNRAS.478.4590T - Mon. Not. R. Astron. Soc., 478, 4590-4601 (2018/August-3)

RR Lyrae variables in M31 and its satellites: an analysis of the galaxy's population.

TANAKUL N. and SARAJEDINI A.

Abstract (from CDS):

We present an analysis of M31 RR Lyrae stars in six different fields using archival imaging from the Hubble Space Telescope. Published data for M31, M33, and several M31 dwarf spheroidal galaxies are also used to study the global properties of RR Lyrae in these systems. From the properties of RR Lyrae stars, we found that the majority of M31 and M33 RRLs are of Oosterhoff I (OoI),while those in M31 dSphs are of Oosterhoff intermediate. The main parameter affecting these Oosterhoff types is likely to be metallicity. Metallicity also plays a role in the lack of RRLs in the high amplitude short period(HASP, defined as those with P <= 0.48 and AV >= 0.75 mag) variables in M31 dSphs. This difference in the properties of RRLs between their parent galaxy and satellites, as well as the lack of RRLs in the HASP region in dSphs can also be observed in the Milky Way (MW). Therefore, systems like these dSphs are unlikely to be the main building blocks of the M31 and MW halo.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: variables: RR Lyrae - galaxies: individual: (M31) - Local Group

VizieR on-line data: <Available at CDS (J/MNRAS/478/4590): tableb1a.dat tableb1b.dat table4.dat>

Nomenclature: [TS2018] ne7 wfc1 NNNNNN N=21 among (Nos 22960-124515), [TS2018] ne7 wfc2 NNNNNN N=20 among (Nos 61943-122846), [TS2018] sw5 wfc1 NNNNN N=68 among (Nos 1641-17003), [TS2018] sw5 wfc2 NNNNN N=67 among (Nos 2228-27525), [TS2018] sw20a wfc1 NNNNN N=6 among (Nos 15559-21279), [TS2018] sw20a wfc2 NNNNN N=10 among (Nos 16332-22047), [TS2018] sw20b uvis1 NNNNN N=7 among (Nos 4917-10706), [TS2018] sw20b uvis2i NNNNN N=5 among (Nos 5965-11309), [TS2018] sw23a wfc1 NNNNN N=11 among (Nos 8274-18395), [TS2018] sw23a wfc2 NNNNN N=4 among (Nos 10420-14574), [TS2018] sw23b uvis1 NNNN (Nos 3026, 3407, 3536), [TS2018] sw23b uvis2 NNNN (Nos 3184, 3443).

Simbad objects: 237

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