2003A&A...411..197M


Query : 2003A&A...411..197M

2003A&A...411..197M - Astronomy and Astrophysics, volume 411197-202 (2003/11-4)

Two new bright Ae stars.

MONIN D.N., WADE G.A. and FABRIKA S.N.

Abstract (from CDS):

Two newly identified Ae stars, ν Cyg and κ UMa, were discovered in the course of the Magnetic Survey of Bright main sequence stars (Monin et al., 2002A&A...396..131M). We present their Hα profiles along with measurements of their equivalent width and parameters of emission features. Emission in the Hα line of ν Cyg is variable on a time scale of 3 years. κ UMa exhibits weak emission which is rather stable. The emission is thought to arise from a circumstellar disk, and we have estimated the size of that disk.Both new emission stars are IRAS sources. Their IR color excesses are consistent with those of classical Ae stars. Thus, ν Cyg and κ UMa appear not to belong to the class of Herbig Ae/Be stars. We argue that the frequency of Ae stars may be underestimated due to the difficulty of detection of weak emission in some A stars.

Abstract Copyright: ∼

Journal keyword(s): stars: emission line, Be - stars: individual: ν Cyg - stars: individual: κ UMa

Simbad objects: 3

goto Full paper

goto View the references in ADS

Number of rows : 3
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 * kap UMa ** 09 03 37.52762 +47 09 23.4890   3.55 3.55     A1Vn 175 0
2 * gam UMa Em* 11 53 49.8473166 +53 41 41.135025 2.440 2.450 2.440 2.44 2.47 A0V 417 0
3 * nu. Cyg ** 20 57 10.4187305125 +41 10 01.671428052 3.96 3.96 3.94 3.89 3.89 A0IIIn 163 0

To bookmark this query, right click on this link: simbad:objects in 2003A&A...411..197M and select 'bookmark this link' or equivalent in the popup menu