2008AJ....135.2217H


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.16CEST19:17:54

2008AJ....135.2217H - Astron. J., 135, 2217-2221 (2008/June-0)

The peculiar cepheid FN Aql.

HURLEY M., MADORE B.F. and FREEDMAN W.L.

Abstract (from CDS):

We draw attention to the singularly peculiar photometric properties of the 9.5-day Cepheid FN Aql. An initial study of its color-color plots shows an unusually wide trajectory in the (U - B)-(B - V) diagnostic plane. A closer investigation reveals that the photometric residuals around fits to the individual mean light curves are highly correlated, decreasing in amplitude as a function of increasing wavelength. That correlation and trend suggest time-variable dust extinction; however, the grain properties must be different from the general interstellar medium. FN Aql is an IRAS source and also appears in the proto-planetary nebulae candidate in the 1989 listing of Volk & Kwok. The source of the changing extinction is probably localized and intrinsic to the Cepheid itself, possibly a wind. Further photometric studies of this peculiar Cepheid are recommended.

Abstract Copyright:

Journal keyword(s): Cepheids

Simbad objects: 6

goto Full paper

goto View the reference in ADS

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 - 2021
#notes
1 V* SU Cas cC* 02 51 58.7508894403 +68 53 18.601570075 6.92 6.44 5.80     F5.5III+ 412 1
2 V* SV Per cC* 04 49 47.9361288171 +42 17 22.964422403   9.74 8.86     F6-G1 138 0
3 V* RS Pup cC* 08 13 04.2157137938 -34 34 42.691837063 8.89 8.00 6.70   5.453 F8Iab 325 0
4 * L Car * 10 22 58.1460612 -66 54 05.390302 4.35 4.86 4.99     B8V 105 0
5 V* V339 Cen cC* 14 21 48.5455617856 -61 32 58.662312019   9.68 8.57     F7II 91 0
6 V* FN Aql cC* 19 12 47.3150076412 +03 33 26.704507437   9.58 7.96     F8/G0Iab/b 170 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008AJ....135.2217H and select 'bookmark this link' or equivalent in the popup menu


2021.05.16-19:17:55

© Université de Strasbourg/CNRS

    • Contact