2007A&A...463..225A


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.16CEST23:22:04

2007A&A...463..225A - Astronomy and Astrophysics, volume 463, 225-232 (2007/2-3)

Is 44 Tauri an exceptional case among the δ Scuti stars?

ANTOCI V., BREGER M., RODLER F., BISCHOF K. and GARRIDO R.

Abstract (from CDS):

This paper investigates the pulsational behavior of the exceptionally slow rotating δ Scuti star 44 Tau. During 2000 and 2003 we carried out a photometric observing campaign and obtained 470 h of Stroemgren photometry (v and y). We observed 29 pulsational frequencies, from which 16 linear combinations were detected. Amplitude variations were found to be significant for three frequencies. Furthermore a close frequency pair was derived. The pulsational constant Q has been calculated for all frequencies. The radial fundamental and the first overtone were identified based on Q and the positive phase shifts in all three observing seasons. Additionally we found evidence for the presence of g modes. The newly derived value of the projected rotational velocity of vsini=2±1km/s is discussed. Fast rotation can be excluded, but there are no evident proofs to favor slow rotation or pole-on view.

Abstract Copyright:

Journal keyword(s): stars: variables: δ Sct - stars: oscillations - stars: individual: 44 Tau - techniques: photometric

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 * 28 And dS* 00 30 07.3626822971 +29 45 05.592507696   5.467 5.214     A7III 198 1
2 V* CC And dS* 00 43 48.0123102508 +42 16 55.769016158   9.693 9.347 9.40   F3IV-V 88 0
3 HD 25768 SB* 04 06 04.5550052083 +26 12 42.442883643 8.100 8.080 7.580     F8 23 0
4 * psi Tau PM* 04 07 00.4569690568 +29 00 04.708418391   5.57 5.2     F0 82 0
5 * p Tau dS* 04 10 49.8603883663 +26 28 51.433802246   5.715 5.387     F2IV-V 191 0
6 * 1 Mon dS* 05 59 01.0804535741 -09 22 56.007927198   6.46 6.16     F2/3IV 139 0
7 V* BI CMi dS* 08 05 31.7136507824 +02 09 31.667473929   9.61 9.19     F0IV 30 0
8 V* FG Vir dS* 12 14 15.4567370777 -05 42 59.750421714   6.807 6.558     A8/9V 206 0
9 * 4 CVn dS* 12 23 47.0114947753 +42 32 33.866981068   6.382 6.022     F3III-IV 186 0
10 V* V974 Oph dS* 17 37 33.7432962186 -29 45 25.235708849   11.81 11.50     A5 24 0

    Equat.    Gal    SGal    Ecl

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2019.09.16-23:22:04

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