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| Query : 2024AJ....168..221E |
2024AJ....168..221E - Astron. J., 168, 221 (2024/November-0)
The Components of Cepheid Systems: The FN Vel System.
EVANS N.R., KERVELLA P., KURASZKIEWICZ J., GUNTHER H.M., ANDERSON R.I., PROFFITT C., GALLENNE A., MERAND A., TRAHIN B., VIVIANI G. and SHETYE S.
Abstract (from CDS):
Cepheid masses continue to be important tests of evolutionary tracks for intermediate-mass stars as well as important predictors of their future fate. For systems where the secondary is a B star, Hubble Space Telescope ultraviolet spectra have been obtained. From these spectra a temperature can be derived, and from this a mass of the companion M2. Once Gaia DR4 is available, proper motions can be used to determine the inclination of the orbit. Combining mass of the companion, M2, the mass function from the ground-based orbit of the Cepheid and the inclination produces the mass of the Cepheid, M1. The Cepheid system FN Vel is used here to demonstrate this approach and what limits can be put on the Cepheid mass for inclination between 50° and 130°.
Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.
Journal keyword(s): Cepheid variable stars - Stellar masses
Simbad objects: 6
| Number of rows : 6 |
| 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 | * alf Eri | Be* | 01 37 42.84548 | -57 14 12.3101 | -0.36 | 0.30 | 0.46 | 0.49 | 0.60 | B6Vpe | 495 | 1 |
| 2 | * rho Aur | SB* | 05 21 48.4165451880 | +41 48 16.459353360 | 5.070 | 5.207 | B4V | 167 | 0 | |||
| 3 | NAME LMC | G | 05 23 34.6 | -69 45 22 | 0.4 | ~ | 19090 | 0 | ||||
| 4 | V* FN Vel | cC* | 09 48 41.4894764448 | -55 31 10.350795792 | 11.24 | 10.25 | F9II+? | 61 | 0 | |||
| 5 | V* V350 Sgr | cC* | 18 45 17.4968424336 | -20 38 50.552766852 | 8.321 | 7.450 | 8.41 | 6.421 | F8Ib/II | 231 | 0 | |
| 6 | V* V1334 Cyg | cC* | 21 19 22.1791528656 | +38 14 14.868825648 | 6.364 | 5.882 | F1II+B7.0V | 211 | 0 |
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