2001A&A...369..981K


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.27CET13:34:38

2001A&A...369..981K - Astronomy and Astrophysics, volume 369, 981-985 (2001/4-3)

On the δ Scuti variability in the pre-main sequence Herbig Ae star HR 5999.

KURTZ D.W. and CATALA C.

Abstract (from CDS):

A reanalysis of photometric data for the bright, southern Herbig Ae star HR 5999 obtained by Praderie et al. (1991A&AS...89...91P) at ESO in 1985 shows δ Scuti pulsation with the same period, 4.812d–1, and semi-amplitude, 6 mmag, found by Kurtz & Marang (1995MNRAS.276..191K) in data obtained from SAAO in 1994. HR 5999 is, therefore, a potential candidate to test Breger & Pamyatnykh's (1998A&A...332..958B) predictions of evolutionary period changes 10 to 100 times faster in pre-main sequence δ Scuti stars than in post-main sequence stars. We argue that the low frequency, low amplitude α2 CVn variability of HR 6000 with a period near 2 d, and its long-term variability are no hindrance to using it as a comparison star for study of the δ Scuti variability of HR 5999. With a separation of 44 arcsec between HR 5999 and HR 6000, and similar brightnesses for the two stars, we urge the use of small telescopes with CCD photometers to obtain the long-term data necessary for the study of period change. We point out that this can be done under less-than-ideal photometric conditions and urban lighting with CCD photometers on small telescopes which are widely available at small observatories, at universities and at the home observatories of serious amateur astronomers.

Abstract Copyright:

Journal keyword(s): stars: circumstellar matter - stars: individual: HR 5999 - stars: oscillations: pre-main sequence: variables: δ Sct

CDS comments: p.981 V599 Mon misprint for V589 Mon

Simbad objects: 15

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Number of rows : 15

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 HD 35929 dS* 05 27 42.7907337821 -08 19 38.446457813   8.55 8.11     F2IV/V 88 0
2 V* V351 Ori Ae* 05 44 18.7949420603 +00 08 40.411665342 9.44 9.22 8.87     A7V 100 0
3 V* V588 Mon dS* 06 39 05.9034782739 +09 41 03.436577731   9.93 9.75     A5/7 51 0
4 V* V589 Mon dS* 06 39 28.4638678350 +09 42 03.963430050   10.6 10.3     F0/2 57 0
5 NGC 2264 OpC 06 40 58 +09 53.7     3.9     ~ 1602 1
6 V* XX Pyx dS* 08 58 39.0320174189 -24 35 10.585991007           A4V 81 0
7 V* DX Cha Ae* 12 00 05.0870448691 -78 11 34.559255151   6.81 6.60     A0_sh 308 0
8 * kap01 Boo SB* 14 13 27.8241117808 +51 47 16.622477020 7.04 7.08 6.69     F2V 79 0
9 * kap02 Boo dS* 14 13 29.0092522950 +51 47 23.877557568   4.74 4.51     A7IV 146 0
10 HD 142666 TT* 15 56 40.0222941557 -22 01 40.004849949 9.41 9.37 8.82 8.31 8.01 F0V_sh 219 0
11 V* V856 Sco Ae* 16 08 34.2868591379 -39 06 18.326059778 7.66 7.41 7.05 6.92   A7IIIne_sh 353 0
12 V* V1027 Sco a2* 16 08 34.5611688784 -39 05 34.277434873   6.552 6.629 6.66   A0/3III 176 0
13 Cl* NGC 6823 HOAG 157 V* 19 43 06.7593756724 +23 16 37.281214300     14.6     ~ 9 0
14 NGC 6823 OpC 19 43 09 +23 18.0   7.71 7.1     ~ 251 2
15 Cl* NGC 6823 BL 50 V* 19 43 09.0494581690 +23 17 49.017594678   15.09 14.5     ~ 10 0

    Equat.    Gal    SGal    Ecl

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2020.10.27-13:34:38

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