2018PASP..130e4201K

Query : 2018PASP..130e4201K

2018PASP..130e4201K - Publ. Astron. Soc. Pac., 130, part no 5, 4201-54201 (2018/May-0)

Metal-poor Type II Cepheids with periods less than three days.

KOVTYUKH V., WALLERSTEIN G., YEGOROVA I., ANDRIEVSKY S., KOROTIN S., SAVIANE I., BELIK S., DAVIS C.E. and FARRELL E.M.

Abstract (from CDS):

We have analyzed 10 high-resolution spectra of Type II Cepheids with periods less than 3 days. We find that they clearly separate into two groups: those with near or slightly below solar metallicities, and those with [Fe/H] between -1.5 and -2.0. While the former are usually called BL Her stars, we suggest that the latter be called UY Eri stars. The UY Eri subclass appears to be similar to the short period variables in globular clusters of the Galactic Halo. Globular clusters with [Fe/H] > -1.0 almost never have Type II Cepheids.

Abstract Copyright: © 2018. The Astronomical Society of the Pacific. All rights reserved.

Journal keyword(s):

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* UY Eri WV* 03 13 39.1354081104 -10 26 32.405933364   11.744 11.281 11.318   F 80 0
2 V* XX Vir WV* 14 16 48.5934410448 -06 17 15.064681488   12.38 11.65     F6 68 0
3 HD 129981 WV* 14 46 33.6355780248 -32 10 15.265235964   8.92 8.27 9.14   G5I/IIIpCH 110 0
4 V* BF Ser cC* 15 16 28.5001622760 +16 26 39.692610348   12.08 12.02     A9.5 51 0
5 V* UY CrB RR* 16 06 21.7639663320 +28 07 03.841797432     13.00     ~ 28 0
6 V* V716 Oph cC* 16 30 49.4656238088 -05 30 19.571456772   11.60 11.79     F2 52 0
7 V* V1287 Sco cC* 16 36 52.8533692896 -28 05 34.218492792           ~ 9 0
8 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 857 0
9 V* BL Her WV* 18 01 09.2240599584 +19 14 56.696475012   10.54 9.70     F0 182 0
10 ASAS J182630-2449.4 cC* 18 26 29.9051317584 -24 49 18.016011084       13.272 12.245 ~ 7 1
11 V* AU Peg WV* 21 24 00.2421322416 +18 16 43.777873164   9.993 9.355 9.203   F8 111 0

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