2003AJ....126.2495S

Query : 2003AJ....126.2495S

2003AJ....126.2495S - Astron. J., 126, 2495-2501 (2003/November-0)

The spectra of type II cepheids. II. The Hα line in intermediate-period stars.

SCHMIDT E.G., LANGAN S., LEE K.M., JOHNSTON D., NEWMAN P.R. and SNEDDEN S.A.

Abstract (from CDS):

We present 98 Hα profiles for 21 pulsating variable stars with periods from 3 to 8 days. The strength, depth, and shape of Hα vary throughout the cycles of the stars in a way consistent with the temperature changes. Otherwise, they are quite uniform among all the stars, with a single exception. In FM Del, Hα is weaker and has a smaller central depth than in the other stars. This and the wavelength shifts of the core are attributed to incipient emission. The differential velocity of Hα relative to the metal lines is less than 25 km/s for all the stars except QY Cyg, FM Del, and EF Tau. We suggest that this indicates that only these stars are type II Cepheids despite the large distances of some of the others from the Galactic plane.

Abstract Copyright: ∼

Journal keyword(s): Stars: Variables: Cepheids - Stars: Population II

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* BF Cas cC* 00 14 03.2290682280 +60 59 10.556798892   13.74 12.47     ~ 42 0
2 V* AP Cas cC* 00 33 16.1983820016 +62 54 26.147676060   12.68 11.52     F7.5Ib 63 0
3 V* DQ And cC* 00 59 34.4737294104 +45 24 24.200487720   12.29 11.79     hF8mF6 36 0
4 V* AM Cam cC* 03 36 20.1469250256 +62 17 14.011369008           ~ 40 0
5 V* SZ Tau cC* 04 37 14.7776556504 +18 32 34.926940860 7.65 7.13 6.37     F6.7:Ib 305 0
6 V* CK Cam cC* 05 06 31.6433574576 +55 21 12.701178252   8.56 7.59     F8II+ 61 0
7 V* EF Tau cC* 05 43 31.7947483440 +19 25 12.059319072     13.16     ~ 38 0
8 V* FT Mon cC* 06 21 36.0794129472 +04 04 24.841341696   11 12.844 12.23 11.496 ~ 46 0
9 * 48 Aur cC* 06 28 34.0881845487 +30 29 34.929596860 6.73 6.23 5.55   4.777 F5.5-G0Ib 382 0
10 V* V477 Oph WV* 17 59 08.1631779360 +05 38 26.222126604   13.70       ~ 25 0
11 * gam01 Sgr cC* 18 05 01.2264355704 -29 34 48.322222356 5.99 5.47 4.69   3.869 G0Ib/II 348 0
12 V* BB Her cC* 18 45 54.1032230136 +12 20 10.110329988   11.1 10.02     G5 94 0
13 V* V912 Aql cC* 18 48 16.3227619056 +00 49 03.591566652   13.431 11.359 10.74 8.879 G0 16 0
14 V* NW Lyr WV* 19 15 56.3444420064 +34 27 08.108273484   13.03 12.22     ~ 32 0
15 * eta Aql cC* 19 52 28.3689223781 +01 00 20.371980515 5.12 4.61 3.80   3.030 F6Iab+B9.8V 672 0
16 V* V733 Aql cC* 19 57 33.0223559472 +11 02 37.243005648   10.96 10.09     K0 75 0
17 V* QY Cyg cC* 19 58 51.5386344816 +37 38 50.137427364   14.90       ~ 24 0
18 V* KL Aql cC* 20 01 09.8185994112 +15 48 12.685668336   10.95 10.14     hF4mF7/8 90 0
19 V* V572 Aql cC* 20 02 32.6873653728 +00 42 50.052585204   11.70 11.01     ~ 34 0
20 V* GL Cyg cC* 20 03 34.7010205104 +39 09 34.732954656   14.20 13.11     F5 43 0
21 V* V383 Cyg cC* 20 28 58.1572781664 +34 08 06.362995488   12.512 10.883   8.964 ~ 41 0
22 V* FM Del WV* 20 33 44.2573300032 +16 16 17.525671968           F6.5 15 0
23 V* TX Del WV* 20 50 12.6952830192 +03 39 08.360890416   9.95 8.84     F8 103 0
24 V* T Vul cC* 20 51 28.2383768376 +28 15 01.819622952 6.89 6.49 5.77   5.061 F5Ib+A0.8V 342 0
25 V* V1334 Cyg cC* 21 19 22.1791528656 +38 14 14.868825648   6.364 5.882     F1II+B7.0V 190 0
26 V* IT Cep cC* 22 02 29.2237683607 +57 08 38.355714152   15.288 13.506 12.988   ~ 10 0
27 V* V394 Cep cC* 22 02 40.9017952080 +59 27 08.933890032   15.144 13.706 13.589   ~ 16 0
28 * del Cep cC* 22 29 10.2626640314 +58 24 54.697613650 4.71 4.35 3.75   3.219 F5Iab:+B7-8 730 0
29 V* CZ Cas cC* 23 39 27.2938261248 +62 22 19.708663548   13.18 11.73   10.083 F6 51 0
30 V* CD Cas cC* 23 45 02.6274966336 +63 00 13.870675872   11.62 10.64     F6-G5 78 0

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