2005A&A...430..279H


Query : 2005A&A...430..279H

2005A&A...430..279H - Astronomy and Astrophysics, volume 430, 279-286 (2005/1-4)

Radial velocity variations in pulsating Ap stars. V. 10 Aquilae.

HATZES A.P. and MKRTICHIAN D.E.

Abstract (from CDS):

We have used precise stellar radial velocities to study the pulsational motion of the rapidly oscillating Ap star 10 Aql. Observations were made on three separate nights using the high resolution spectrograph of the Harlan J. Smith 2.7m telescope at McDonald Observatory. A high radial velocity precision was achieved by using an iodine gas absorption cell. The integrated radial velocity measurements using the full wavelength region covered by iodine absorption lines (5000-6300Å) failed to detect any coherent pulsational velocity variations to a level of 2.5-5m/s. An analysis over a much narrower wavelength range revealed that pulsational radial velocity variations are indeed present in 10 Aql, but only in 5 spectral lines. The amplitude of these variations ranged from about 100m/s to as high as 398m/s for an unidentified feature at λ5471.40Å. Other spectral features showing pulsational radial velocity variations are tentatively identified as Sm II and Tm II.

Abstract Copyright:

Journal keyword(s): stars: chemically peculiar - stars: oscillations - stars: individual: 10 Aql

Simbad objects: 9

goto Full paper

goto View the references in ADS

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 - 2023
#notes
1 V* DO Eri a2* 03 55 16.1313315312 -12 05 56.727712752 6.35 6.32 6.00     A9VpSrEuCr 388 0
2 V* PP Vir a2* 14 04 48.9376773456 +05 24 51.459774732   8.70 8.29     F0 75 0
3 * alf Cir a2* 14 42 30.4195804 -64 58 30.493451 3.55 3.43 3.19 2.96 2.86 A7VpSrCrEu 353 0
4 V* HI Lib a2* 15 09 02.4051867312 -13 59 58.675373736   7.84 7.46     F2VpSrCrEu 126 0
5 * bet CrB a2* 15 27 49.7315305 +29 06 20.522375 4.08 3.97 3.68 3.50 3.45 F2VpSrCrEuSi 673 0
6 * 33 Lib a2* 15 29 34.7424021408 -17 26 27.377921220 7.22 7.07 6.69     F0VspEuGdSr 243 0
7 V* V694 CrA a2* 18 12 25.8347418984 -37 45 09.271268532   8.34 7.92     ApSrCrEu 112 0
8 * 10 Aql a2* 18 58 46.9240671288 +13 54 23.941711692 6.23 6.14 5.89     A7VpSrEu_Ksn 278 0
9 * gam Equ a2* 21 10 20.5000721160 +10 07 53.691967776 5.03 4.94 4.68 4.43 4.32 A9VpSrCrEu 533 0

To bookmark this query, right click on this link: simbad:objects in 2005A&A...430..279H and select 'bookmark this link' or equivalent in the popup menu


2022.12.06-16:27:19

© Université de Strasbourg/CNRS

    • Contact