2009A&A...501..291S


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.06CEST03:46:29

2009A&A...501..291S - Astronomy and Astrophysics, volume 501, 291-295 (2009/7-1)

The nature of the line profile variability in the spectrum of the massive binary HD 152219.

SANA H.

Abstract (from CDS):

HD 152219 is a massive binary system with O9.5 III + B1-2 V/III components and a short orbital period of 4.2d. Its primary component further displays clear line profile variability (LPV). The primary component being located within the pulsational instability domain predicted for high-luminosity stars, we previously suggested that the observed LPV could be associated with non-radial pulsations. The aim of the present work is to determine the nature of the observed LPV in the spectrum of the primary component of HD 152219. During a 4-night FEROS monitoring campaign, we collected a new set of 134 high signal-to-noise spectra. These new observations were then used to re-investigate the variability of different line profiles in the spectrum of HD 152219. Based on the present analysis, we discard the non-radial pulsations and point out the Rossiter-McLaughlin effect as the cause of the LPV in HD 152219. The upper limit on the amplitude of possible weak pulsations is set at a few parts per thousand of the continuum level.

Abstract Copyright:

Journal keyword(s): stars: individual: HD 152219 - stars: oscillations - binaries: close - binaries: spectroscopic - stars: early-type - line: profiles

VizieR on-line data: <Available at CDS (J/A+A/501/291): table2.dat>

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * ksi Per ** 03 58 57.9022917 +35 47 27.713205 3.190 4.080 4.060 3.88 3.89 O7.5III(n)((f)) 790 0
2 HD 34656 Em* 05 20 43.0823042222 +37 26 19.213246169 5.87 6.77 6.76     O7.5II(f) 191 0
3 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1093 1
4 HD 93521 * 10 48 23.5116139485 +37 34 13.089937784 5.67 6.79 7.03     O9.5IIInn 403 1
5 * zet Oph Be* 16 37 09.5390545 -10 34 01.529471 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1728 2
6 HD 152219 Al* 16 53 55.6076307131 -41 52 51.497348038 6.950 7.705 7.569   7.267 O9.5III(n) 90 0
7 NGC 6231 OpC 16 54 08.51 -41 49 36.0   2.83 2.6     ~ 487 0
8 HD 152249 s*b 16 54 11.6391931444 -41 50 57.294733186 5.91 6.65 6.45     OC9Iab 217 0
9 * lam Cep s*b 22 11 30.5750839949 +59 24 52.147736074 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 646 1

    Equat.    Gal    SGal    Ecl

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2020.08.06-03:46:29

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