2014A&A...568A..32D


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.22CET12:14:52

2014A&A...568A..32D - Astronomy and Astrophysics, volume 568A, 32-32 (2014/8-1)

Searching for δ Scuti-type pulsation and characterising northern pre-main-sequence field stars.

DIAZ-FRAILE D., RODRIGUEZ E. and AMADO P.J.

Abstract (from CDS):

Pre-main-sequence (PMS) stars are objects evolving from the birthline to the zero-age main sequence (ZAMS). Given a mass range near the ZAMS, the temperatures and luminosities of PMS and main-sequence stars are very similar. Moreover, their evolutionary tracks intersect one another causing some ambiguity in the determination of their evolutionary status. In this context, the detection and study of pulsations in PMS stars is crucial for differentiating between both types of stars by obtaining information of their interiors via asteroseismic techniques. A photometric variability study of a sample of northern field stars, which previously classified as either PMS or Herbig Ae/Be objects, has been undertaken with the purpose of detecting δ Scuti-type pulsations. Determination of physical parameters for these stars has also been carried out to locate them on the Hertzsprung-Russell diagram and check the instability strip for this type of pulsators. Multichannel photomultiplier and CCD time series photometry in the uvby Stroemgren and BVI Johnson bands were obtained during four consecutive years from 2007 to 2010. The light curves have been analysed, and a variability criterion has been established. Among the objects classified as variable stars, we have selected those which present periodicities above 4d–1, which was established as the lowest limit for δ Scuti-type pulsations in this investigation. Finally, these variable stars have been placed in a colour-magnitude diagram using the physical parameters derived with the collected uvbyβ Stroemgren-Crawford photometry. Five PMS δ Scuti- and three probable β Cephei-type stars have been detected. Two additional PMS δ Scuti stars are also confirmed in this work. Moreover, three new δ Scuti- and two γ Doradus-type stars have been detected among the main-sequence objects used as comparison or check stars.

Abstract Copyright:

Journal keyword(s): asteroseismology - stars: pre-main sequence - stars: variables: T Tauri, Herbig Ae/Be - stars: variables: δ Scuti - stars: fundamental parameters - Hertzsprung-Russell and C-M diagrams

Simbad objects: 68

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Number of rows : 68

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 V* VX Cas Ae* 00 31 30.6816836826 +61 58 50.982831889 11.83 11.59 10.50 11.19 10.94 A0Vep 125 0
2 BD+61 154 Ae* 00 43 18.2564711093 +61 54 40.138272968 10.83 11.13 10.60     B8eq 188 1
3 V* V1185 Tau Ir* 03 39 00.5584302634 +29 41 45.727114612   11.04 10.67     A0 18 0
4 HD 283817 TT* 04 40 32.6390643711 +24 26 31.332766721   11.49 10.61     K2e+A 33 0
5 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 901 2
6 HD 31648 Ae* 04 58 46.2654165113 +29 50 36.990341242 7.84 7.78 7.62 7.76 7.43 A5Vep 375 0
7 V* UX Ori Ae* 05 04 29.9881676817 -03 47 14.288047238 10.25 10.93 8.70 9.62 9.43 A4IVe 328 1
8 V* V1366 Ori EB* 05 16 00.4764811920 -09 48 35.394685295 10.19 10.16 9.84 9.77 9.63 B9.5V 158 0
9 HD 35187 Y*O 05 24 01.17261 +24 57 37.5791   8.05 7.78     A2e+A7 92 1
10 HD 287823 Y*O 05 24 08.0485438854 +02 27 46.881461343   9.91 9.74     A0 25 0
11 Haro 6-42 Or* 05 26 09.4846648143 +11 23 35.812330440   15.36 14.00 13.78   ~ 7 0
12 HD 290409 SB* 05 27 05.4730040752 +00 25 07.624475177   10.07 9.96     B8.5Ve 28 0
13 V* CO Ori TT* 05 27 38.3352 +11 25 38.923 12.96 12.33 10.30 10.33 9.63 F7Ve 155 0
14 HD 35909 * 05 28 34.7736313780 +13 40 44.327196227   6.502 6.340     A4V 29 0
15 V* V1650 Ori Or* 05 29 11.4396287730 -06 08 05.404023469   11.02 10.39     F7 23 0
16 HD 290500 * 05 29 48.0516419641 -00 23 43.506251089   11.35 11.04     A2 17 0
17 HD 244314 Or* 05 30 19.0245506752 +11 20 20.002575675   10.33 10.18     A1V 19 0
18 HD 36112 Ae* 05 30 27.5286772598 +25 19 57.082162439   8.57 8.27     A8Ve 325 0
19 HD 244604 Or* 05 31 57.2512002483 +11 17 41.374206174   9.61 9.43     A0Vesh 53 0
20 V* RY Ori Or* 05 32 09.9419985443 -02 49 46.769539985 12.62 12.76 10.80 10.82 10.34 F7 45 0
21 HD 36408 ** 05 32 14.14223 +17 03 29.2492           B7III 83 0
22 HD 245185 Ae* 05 35 09.6040600795 +10 01 51.465846371 10.05 10.07 9.93     A0Vae 101 0
23 V* CQ Tau Ae* 05 35 58.4671238887 +24 44 54.086375712 11.290 10.780 10.000   8.33 F5IVe 246 0
24 BD-06 1253 Ae* 05 36 25.4313245626 -06 42 57.684449700   11.65 10.9 10.29   A1e 403 1
25 HD 290770 Em* 05 37 02.4475773705 -01 37 21.362759254   9.29 9.30     B9 26 0
26 V* BF Ori Ae* 05 37 13.2623698298 -06 35 00.565420577 10.37 10.00 9.69 10.06 9.31 A7III 267 0
27 HD 37357 Ae* 05 37 47.0795535305 -06 42 30.203876953   8.96 8.85     A1V 94 0
28 V* V1247 Ori dS* 05 38 05.2518310146 -01 15 21.696624736   10.18 9.82     F0V 65 0
29 HD 37411 Or* 05 38 14.5075249942 -05 25 13.317577897 10.03 9.91 9.79 9.60 9.45 hA3VakA0mA0(eb)_lB 81 0
30 V* RR Tau Ae* 05 39 30.5114685049 +26 22 26.961204895 11.64 12.09 11.28 10.58 10.17 A0:IVe 216 0
31 HD 37594 * 05 39 31.1505275696 -03 33 52.928620584   6.260 5.974     A9V 70 0
32 V* V350 Ori Em* 05 40 11.7641189614 -09 42 11.085315699 12.74 12.08 11.42 11.38 10.96 A7V 62 0
33 HD 37806 Be* 05 41 02.2930276072 -02 43 00.729083804 7.67 7.93 7.90     B9/9.5II/III 133 0
34 HD 38120 Be* 05 43 11.8931815256 -04 59 49.881886291 9.08 9.10 9.1     B9Vnne 69 0
35 V* V351 Ori Ae* 05 44 18.7949420603 +00 08 40.411665342 9.44 9.22 8.87     A7V 97 0
36 HD 249879 Ae* 05 58 55.7825517101 +16 39 57.333192163   10.65 10.62     B8?e 19 0
37 HD 250550 Ae* 06 01 59.9894900068 +16 30 56.724889160   9.60 9.593 9.64   B9e 228 1
38 BD-10 1351 Ae* 06 02 14.8851098137 -10 00 59.514570899   10.54 10.40     B3V[e] 27 0
39 BD-14 1319 Em* 06 03 37.0742 -14 53 03.174   10.95 10.96     A0Va-e 26 0
40 2MASS J06133726-0625017 TT* 06 13 37.2612265184 -06 25 01.676344464   12.35 11.82     A7V 8 0
41 HD 261387 * 06 39 20.7853285573 +09 33 50.938327056   10.90 10.87     A2/3 9 0
42 HD 50083 Be* 06 51 45.7533498072 +05 05 03.863508792 6.22 6.98 6.92     B3 92 0
43 HD 52343 * 07 00 41.8768691571 -06 26 34.816628603   8.49 8.17     F0V 13 0
44 HD 52721 Ae* 07 01 49.50977 -11 18 03.3219 5.88 6.65 6.59 7.52   B2Vne 199 0
45 EM* LkHA 218 Ae* 07 02 42.5311084174 -11 26 11.826251745   13       A0e 56 0
46 HD 53240 * 07 03 57.4565076519 -10 07 25.554393485 6.03 6.357 6.428     B8III: 46 0
47 EM* LkHA 220 Ae* 07 04 06.7001589080 -11 26 08.503450864   11.62 11.60     B8e 47 0
48 HD 53367 Ae* 07 04 25.53209 -10 27 15.7404 6.81 7.40 6.96 7.92   B0IV/Ve 300 0
49 GSC 04823-00146 * 07 08 38.7905669928 -04 19 04.843454487 12.48 12.71 12.06     B0 32 0
50 HD 141569 pr* 15 49 57.7484743862 -03 55 16.344023102 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 454 0
51 V* VV Ser Ae* 18 28 47.8619658319 +00 08 39.924642619 12.99 12.63 11.80 11.01 10.24 A5Ve 224 0
52 EM* MWC 300 Ae* 18 29 25.6915000349 -06 04 37.289920628 12.55 12.67 13.795     B1Ia+[e] 125 0
53 HD 174571 Be* 18 50 47.1748610693 +08 42 10.085910050 9.19 9.35 8.89     B2 58 1
54 HD 179218 Ae* 19 11 11.2540715594 +15 47 15.632212730 7.55 7.476 7.39 7.25 7.21 A0Ve 213 0
55 V* WW Vul Ae* 19 25 58.7494596284 +21 12 31.333220807 11.46 10.99 10.25 10.38 10.12 A2IVe 214 0
56 V* PX Vul Or* 19 26 40.2533631097 +23 53 50.777553057 12.56 12.57 11.83 10.90 10.30 F3Ve 48 0
57 Min 1-92 pA* 19 36 18.830 +29 32 50.86 12.13 12.35 11.75 11.54   B0.5IV[e] 234 1
58 HD 190073 Ae* 20 03 02.5098091524 +05 44 16.658081203 7.91 7.86 7.73   7.65 A2IVe 220 0
59 BD+40 4124 Ae* 20 20 28.2415737117 +41 21 51.527810947 11.11 11.36 10.62 10.510   B2Ve 271 1
60 V* V1658 Cyg Mi* 20 25 25.6208577624 +42 26 28.556405858       15.66   M9 7 0
61 HD 200775 Ae* 21 01 36.9184805541 +68 09 47.770037306 7.34 7.73 7.36     B2Ve 503 0
62 HD 202901 * 21 15 36.7877712387 +65 51 48.861913257   8.65 8.36     F0 5 0
63 HD 203024 Y*O 21 16 03.0494926186 +68 54 52.100583837   9.02 8.86     A 43 1
64 HD 203573 * 21 20 05.9769963045 +64 37 53.861922296   8.12 7.86     F0 6 0
65 BD+65 1637 Ae* 21 42 50.1799735837 +66 06 35.184005596 10.21 10.56 10.53 10.29   B3IV-Vne 142 1
66 BD+46 3471 Ae* 21 52 34.0992388111 +47 13 43.600551484 10.72 10.56 10.15     A0.5IIIer 190 1
67 V* BH Cep Ae* 22 01 42.8726806026 +69 44 36.423728031 12.18 11.54 11.01 10.62 10.32 F5IIIe 53 0
68 V* SV Cep Ae* 22 21 33.2175224577 +73 40 27.096415978 11.40 11.25 10.35 10.28 10.08 A2IVe 122 0

    Equat.    Gal    SGal    Ecl

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2019.11.22-12:14:52

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