2017A&A...602L...5N


Query : 2017A&A...602L...5N

2017A&A...602L...5N - Astronomy and Astrophysics, volume 602, L5-5 (2017/6-1)

π Aquarii is another γ Cassiopeiae object.

NAZE Y., RAUW G. and CAZORLA C.

Abstract (from CDS):

The γ Cas category is a subgroup of Be stars displaying a strong, hard, and variable thermal X-ray emission. An XMM-Newton observation of π Aqr reveals spectral and temporal characteristics that clearly make this Be star another member of the γ Cas category. Furthermore, π Aqr is a binary but, contrary to γ Cas, the nature of the companion to the Be star is known; it is a non-degenerate (stellar) object and its small separation from the Be star does not leave much room for a putative compact object close to the Be disk. This renders the accretion scenario difficult to apply in this system, and, hence, this discovery favors a disk-related origin for the γ Cas phenomenon.

Abstract Copyright: © ESO, 2017

Journal keyword(s): stars: early-type - stars: emission-line, Be - X-rays: stars - stars: individual: pi Aqr - stars: individual: pi Aqr

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 - 2024
#notes
1 * gam Cas HXB 00 56 42.5310945 +60 43 00.264089 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1211 0
2 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 312 0
3 * pi. Aqr Be* 22 25 16.6230017410 +01 22 38.634449478 3.64 4.60 4.64 4.48 4.48 B1III-IVe 416 0

To bookmark this query, right click on this link: simbad:objects in 2017A&A...602L...5N and select 'bookmark this link' or equivalent in the popup menu