1999A&A...343..222E

Query : 1999A&A...343..222E

1999A&A...343..222E - Astronomy and Astrophysics, volume 343222-228 (1999/3-1)

The Wilson-Bappu effect of the MgIIk line - dependence on stellar temperature, activity and metallicity.

ELGAROY O., ENGVOLD O. and LUND N.

Abstract (from CDS):

The Wilson-Bappu effect is investigated using accurate absolute magnitudes of 65 stars obtained through early release of data from the Hipparcos satellite together with MgII k line widths determined from high resolution spectra observed with the International Ultraviolet Explorer (IUE) observatory. Stars of spectral classes F, G, K and M and luminosity classes I-V are represented in the sample. Wilson-Bappu relations for the MgIIk line for stars of different temperatures i.e. spectral classes are determined. The relation varies with spectral class and there is a significant scatter of the line widths around the regression lines. The sample contains slowly rotating stars of different activity levels and is suitable for investigations of a possible relation between line width and stellar activity. A difference in behavior between dwarfs and giants (and supergiants) of spectral class K seems to be present. Magnetic activity affects the width of the MgIIk line in dwarfs. Metallicity is found to influence the MgIIk line width in giants and supergiants. Possible interpretations of the new results are briefly discussed.

Abstract Copyright: ∼

Journal keyword(s): stars: activity - stars: chromospheres

Simbad objects: 66

goto View the references in ADS

Number of rows : 66
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 166 BY* 00 06 36.7840068588 +29 01 17.412693890   6.82 6.07 5.6   G8V 392 0
2 * zet Tuc PM* 00 20 04.2586334956 -64 52 29.257190108 4.82 4.80 4.23 3.73 3.40 F9.5V 415 0
3 * 9 Cet BY* 00 22 51.7884553555 -12 12 33.969921319 7.29 7.05 6.39     G2.5V 510 0
4 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 631 0
5 * bet Cet PM* 00 43 35.37090 -17 59 11.7827 3.90 3.02 2.01 1.29 0.78 G9.5IIICH-1 543 1
6 * bet And PM* 01 09 43.92388 +35 37 14.0075 5.58 3.62 2.05 0.81 -0.19 M0+IIIa 572 1
7 * 44 And PM* 01 10 18.7404097416 +42 04 53.309986932   6.249 5.665     F8V 194 0
8 * nu. Phe PM* 01 15 11.1214282378 -45 31 53.992580679 5.65 5.54 4.96 4.47 4.11 F9VFe+0.4 281 0
9 * alf Ari PM* 02 07 10.40570 +23 27 44.7032 4.29 3.17 2.01 1.15 0.54 K2-IIIbCa-1 644 2
10 BD+47 612 PM* 02 22 14.6437562448 +47 52 48.104862600   10.85   9.104   M0V 176 0
11 V* VY Ari RS* 02 48 43.7287198695 +31 06 54.592461256   7.72   6.4   G9 241 0
12 HD 17925 RS* 02 52 32.1281856011 -12 46 10.968056223 7.48 6.91 6.05 5.34 4.89 K1V 557 0
13 * kap01 Cet BY* 03 19 21.6964175772 +03 22 12.714979884 5.71 5.52 4.85 4.27 3.91 G5V 948 0
14 HD 21531 SB* 03 27 52.40603 -19 48 16.1409 10.995 9.712 8.367 7.548 6.818 K5V 132 0
15 * 39 Tau ** 04 05 20.2580439192 +22 00 32.057399592   6.54 5.90 5.5   G5V 235 0
16 * 50 Per RS* 04 08 36.6171573432 +38 02 23.058806100 7.78 5.97   5.2   F8V 238 0
17 * eps Ret PM* 04 16 29.0281470260 -59 18 07.755891304 6.59 5.52 4.44 3.62 3.08 K2III 262 1
18 HD 28343 PM* 04 29 00.1238230176 +21 55 21.717292296 10.988 9.688 8.300 7.446 6.656 M0.5V 224 0
19 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1298 2
20 * bet Cae PM* 04 42 03.4822983552 -37 08 39.588865224   5.42 5.05     F3IV 102 0
21 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1207 0
22 * 111 Tau B PM* 05 23 38.3794959384 +17 19 26.820864372 10.093 9.048 7.919 7.266 6.703 K4V 141 0
23 HD 37394 BY* 05 41 20.3356800431 +53 28 51.808818686 7.58 7.07 6.23 5.54 5.11 K0V 365 0
24 * 36 Dor PM* 05 54 06.0545851778 -63 05 23.209034464   5.70 4.66     K2III-IV 114 0
25 * chi01 Ori SB* 05 54 22.9829893 +20 16 34.222038 5.08 5.00 4.40 3.90 3.59 G0V 895 0
26 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1789 0
27 HD 260655 PM* 06 37 10.7988015297 +17 33 53.333221083 12.303 11.104 9.593 8.661 7.718 M0.0V 217 0
28 HD 52698 SB* 07 01 13.7314874136 -25 56 55.491750492 8.203 7.58 6.688     K1V 97 0
29 V* YZ CMi PM* 07 44 40.1723046464 +03 33 08.875227574 13.761 12.831 11.225 9.958 8.263 M4.0Ve 957 0
30 * B Car SB* 08 09 00.6369168474 -61 18 08.545898653   5.163 4.742     F6VFe-0.8CH-0.4 175 0
31 HD 72673 PM* 08 32 51.4956803280 -31 30 03.064960317   7.17 6.38     K1V 242 0
32 HD 74576 PM* 08 43 18.0303716918 -38 52 56.570847350   7.49 6.56     K3V 157 0
33 * 11 LMi RS* 09 35 39.5021937366 +35 48 36.477051175 6.560 6.110 5.340 4.79 4.42 G8Va 407 0
34 HD 88230 PM* 10 11 22.1399492383 +49 27 15.251007087 9.23 7.94 6.61 5.36 4.56 K6VeFe-1 494 0
35 * 47 UMa PM* 10 59 27.9727514012 +40 25 48.920572724   5.66   4.7   G1-VFe-0.5 824 1
36 * 61 UMa PM* 11 41 03.0162706212 +34 12 05.881605449 6.31 6.08 5.34 4.73 4.38 G8V 654 0
37 HD 104304 SB* 12 00 44.4601479291 -10 26 46.067117528 6.76 6.32 5.55     G8IV 264 0
38 * alf Crv PM* 12 08 24.8172764085 -24 43 43.952148016   4.33 4.01     F1V 202 0
39 * gam Cru PM* 12 31 09.95961 -57 06 47.5684 5.01 3.23 1.64 -0.02 -1.44 M3.5III 291 1
40 * 10 CVn PM* 12 44 59.4049642264 +39 16 44.098132297 6.47 6.50 5.95 5.41 5.12 F9V_Fe-0.3 400 0
41 HD 115043 PM* 13 13 37.0081725552 +56 42 29.759356008   7.423 6.813     G1Va 274 0
42 * 70 Vir PM* 13 28 25.8085908881 +13 46 43.638308807 5.930 5.680 4.970 4.37 3.98 G4Va 754 1
43 * tet Cen PM* 14 06 40.94752 -36 22 11.8371 3.94 3.04 2.05 1.29 0.76 K0-IIIb 262 1
44 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1
45 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
46 * 42 Lib * 15 40 16.8973226160 -23 49 05.101136148 7.80 6.29 4.96 4.00 3.32 K3-IIICN2 121 0
47 * alf Ser PM* 15 44 16.0741095811 +06 25 32.268792881 5.080 3.800 2.630 1.82 1.25 K2IIIbCN1 533 0
48 BD+55 1823 SB* 16 17 05.3518858129 +55 16 08.771396846 12.00 10.92 9.46 9.552 8.55 M1.5Ve 220 0
49 * alf TrA * 16 48 39.89508 -69 01 39.7626   3.33 1.88     K2III_Ba1 251 0
50 * eps Sco PM* 16 50 09.8108127 -34 17 35.633735 4.61 3.45 2.29 1.43 0.83 K1III 228 0
51 * w Her RG* 17 20 39.5674498400 +32 28 03.877958860 6.08 6.01 5.39 4.89 4.56 G0V 481 0
52 * bet Dra * 17 30 25.9616959 +52 18 04.999351 4.43 3.79 2.81 2.12 1.64 G2Ib-IIa 428 0
53 * del Sgr * 18 20 59.6428936493 -29 49 41.168145329   4.069 2.668     K2.5IIIaCN0.5 184 0
54 HD 183650 PM* 19 29 21.4443359218 +31 36 31.163027581   7.67   6.5   G6 90 0
55 HD 191408 PM* 20 11 11.9387690214 -36 06 04.351725607   5.44 5.32     K2.5V 294 1
56 HD 191408B PM* 20 11 12.8028949300 -36 06 32.166102762           M3.5 230 1
57 V* AT Mic Er* 20 41 51.15925 -32 26 06.8283 12.753 11.909 10.343 9.098 7.383 M4.5Ve+M4.5Ve 371 0
58 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1344 0
59 * eta Cep PM* 20 45 17.3751675120 +61 50 19.614231888 4.960 4.320 3.410 2.76 2.27 K0IV 461 0
60 V* AX Mic PM* 21 17 15.2690680973 -38 52 02.503938581   8.06 6.68     M1V 249 0
61 * zet Cap SB* 21 26 40.0306553034 -22 24 40.753242596 5.35 4.75 3.74 3.09 2.65 G4Ib:Ba2 293 1
62 * bet Aqr * 21 31 33.5320760349 -05 34 16.229381029 4.27 3.71 2.89 2.29 1.84 G0Ib 463 0
63 V* HN Peg BY* 21 44 31.3299461136 +14 46 18.983292600       6.16   G0V+ 561 0
64 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 616 0
65 * alf Aqr * 22 05 47.0355458275 -00 19 11.463439527 4.65 3.90 2.94 2.27 1.76 G2Ib 451 0
66 * lam And RS* 23 37 33.8427800830 +46 27 29.344721109 5.54 4.84 3.82 3.04 2.47 G8IVk 693 0

To bookmark this query, right click on this link: simbad:objects in 1999A&A...343..222E and select 'bookmark this link' or equivalent in the popup menu