1996A&AS..119..403M

Query : 1996A&AS..119..403M

1996A&AS..119..403M - Astron. Astrophys., Suppl. Ser., 119, 403-412 (1996/November-1)

Stroemgren four-color photometry of X-ray active late-type stars: Evidence for activity-induced deficiency in the m1 index.

MORALE F., MICELA G., FAVATA F. and SCIORTINO S.

Abstract (from CDS):

We present the results of a uvby-β photometric study of a sample of active late-type stars (F-K) selected from the Einstein Extended Medium Sensitivity Survey. Our work shows the presence in the sample of a star population with the photometric index c1 typical of main sequence stars and an unexpected deficiency in m1 index. Stars with more anomalous values of m1 have also very high values of f_ X/fV_ and X-ray surface fluxes, near the "saturation" limit observed in the most active stars and similar to the flux observed in solar active regions. We discuss these results in the light of similar results found in the Sun comparing m1 indices in quiet and active regions and in other samples of active stars.

Abstract Copyright: ∼

Journal keyword(s): stars: activity - stars: late-type - stars: abundances - X-rays: stars

Simbad objects: 89

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Number of rows : 89
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 42 * 00 05 24.2984958120 +16 19 44.418262980   9.07 8.770     G0 27 0
2 HD 105 PM* 00 05 52.5447817152 -41 45 11.044988352   8.13 7.53     G0V 203 0
3 V* LN Peg RS* 00 12 30.2951225569 +14 33 48.897713959   9.40   8.0   G8V+K5V 111 0
4 * kap Phe PM* 00 26 12.2013436436 -43 40 47.390371480 4.22 4.11 3.94 3.78 3.70 A5IVn 158 0
5 HD 3126 PM* 00 34 27.1714801752 -06 30 14.052355416   7.37 6.91     F4V 55 0
6 * p Eri B PM* 01 39 47.5647128524 -56 11 47.213189871   6.692 5.797     K2V 145 0
7 * p Eri A PM* 01 39 47.8126958280 -56 11 35.944312380   6.549 5.685 6.36   K2V 165 0
8 * chi Cet PM* 01 49 35.1027660619 -10 41 11.070999501 5.04 5.00 4.68 4.38 4.22 F0V 215 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 HD 13191 ** 02 08 42.2871560041 -10 05 18.980500414   9.63 9.32 9.39 8.115 G8V 20 0
11 HD 14214 SB* 02 18 01.4433164917 +01 45 28.123488501   6.18 5.59 5.2   G1V 197 0
12 V* FT Cet BY* 02 36 41.7624882231 -03 09 22.094410260 9.768 9.046 8.100 7.578 7.13 K1V 110 0
13 2E 0234.7-0210 * 02 37 17.7 -01 57 41     10.38     G9V 8 0
14 HD 16525 ** 02 38 56.022 -01 35 07.24   8.8 9.1     F8V 16 0
15 BD-00 431 RS* 02 47 26.9130062184 -00 12 22.464084672   10.440 9.681 9.813 8.614 G5 50 0
16 V* IR Eri RS* 03 02 32.6830414824 -15 16 21.424205136   9.30 8.45     K0V 53 0
17 * 94 Cet PM* 03 12 46.4365677072 -01 11 45.955808988   5.631 5.070     F8.5V 478 1
18 BD-19 660 PM* 03 20 50.7089403936 -19 16 08.721788736   11.40 10.32     K7V 31 0
19 HD 21019 PM* 03 23 17.7011620632 -07 47 38.755366656   6.92 6.23     G5/6V 168 0
20 * omi Tau SB* 03 24 48.7983185016 +09 01 43.930632036 5.090 4.490 3.600 2.92 2.47 G6III 237 0
21 BD-20 638 * 03 26 22.0480755456 -20 01 48.729580176   11.15 10.49     G4V 18 0
22 BD-20 646 * 03 28 54.1419221544 -19 58 47.171271252   10.577 10.097 9.95   F8 42 0
23 V* AK For SB* 03 29 22.8752567640 -24 06 03.098788272   10.46 9.36     K3VkFe+0.4 54 0
24 HD 22211 * 03 34 49.0820502384 +06 25 03.700502112   7.114 6.482     G0 77 0
25 1E 0333.1+0607 * 03 35 45.8 +06 17 51     10.31     F6V 8 0
26 HD 22853 SB? 03 40 09.3640170936 -01 53 48.319545480   8.37 7.27     K0III 26 0
27 V* LO Eri RS* 03 50 30.8226917856 -13 55 29.757472356   11.65 10.759   9.816 K0-K1+K1-K2 25 0
28 HD 25102 SB* 03 59 40.4960115792 +10 19 49.359946008   6.762 6.340 6.097 5.860 F5V 156 0
29 2E 0420.3-3900 * 04 22 06.3 -38 53 14     12.04     F6V 7 0
30 * del Tau SB* 04 22 56.0951595936 +17 32 33.049802364 5.56 4.74 3.76 5.56   G9.5IIICN0.5 542 0
31 * 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
32 TYC 87-288-1 * 04 41 09.4427543304 +02 18 46.825308900   11.56 10.70     F9V 11 0
33 * pi.04 Ori SB* 04 51 12.3657730111 +05 36 18.373859886 2.700 3.500 3.680 3.74 3.90 B2III 319 0
34 2E 0452.2+0225 * 04 54 49.5 +02 30 30     10.59     K0V 7 0
35 V* V1192 Ori RS* 05 00 08.2195942104 +03 17 12.024920724   8.75 7.503   6.223 K1/2III 89 0
36 V* V1855 Ori TT* 05 17 54.4112840016 -07 08 19.373753148   11.64 10.695   9.714 K2e 32 0
37 * gam Col Pu* 05 57 32.2100566192 -35 16 59.811551333 3.52 4.18 4.36     B2.5IV 145 0
38 HD 53501 PM* 06 59 50.5350748656 -67 54 59.200292484   6.57 5.17     K3III 53 0
39 * kap Gem ** 07 44 26.8438122013 +24 23 52.787290890 5.19 4.49 3.57 2.86 2.41 G8III-IIIb 308 0
40 * g Gem SB* 07 46 07.4484186384 +18 30 35.993172960 8.09 6.33 4.87 3.72 2.89 K4III 183 0
41 * 11 LMi RS* 09 35 39.5021937366 +35 48 36.477051175 6.560 6.110 5.340 4.79 4.42 G8Va 407 0
42 * 56 UMa SB* 11 22 49.5779879928 +43 28 57.714470868 6.86 6.04 5.03 4.30 3.81 G8IIIa 161 0
43 * c Vir RG* 12 20 20.9813922197 +03 18 45.255217001 7.27 6.12 4.96 4.07 3.46 K0.5IIIbFe-0.5 380 0
44 HD 111487 SB* 12 49 38.6982565560 -06 04 44.864911128   10.402 9.719 9.861 8.834 G5/6V 80 0
45 HD 112542 PM* 12 57 26.2364022504 +01 25 40.787538334   7.35 6.90     F3V 42 0
46 HD 117860 PM* 13 33 11.3140750320 -08 26 36.051691992   8.00 7.36     G2V 75 0
47 HD 118646 PM* 13 38 42.0709958256 -29 33 39.123093744   6.221 5.810     F3V 75 0
48 * i Cen SB* 13 45 41.2439386102 -33 02 37.381099823 4.61 4.61 4.23 3.90 3.69 F2V 173 0
49 V* NZ Vir EB* 14 30 43.9225098912 +07 19 32.021183712   11.65 11.04     F7V 12 0
50 CD-26 10417 ** 14 39 47.0250367116 -26 41 53.048173901   10.751 9.781 9.810   K4V 47 0
51 * 109 Vir PM* 14 46 14.9234473441 +01 53 34.381780831 3.69 3.72 3.73 3.66 3.68 A0IIInn 346 0
52 * alf01 Lib SB* 14 50 41.1718805688 -15 59 49.957540152 5.53 5.57 5.16 4.78 4.59 F3V 214 0
53 2E 1456.9+2108 * 14 59 16.7 +20 56 25     11.16     F8V 5 0
54 * i Lup * 15 14 37.3198417440 -31 31 08.845840812   5.273 4.918     F3III 106 0
55 V* UV CrB SB* 15 22 25.3263055704 +25 37 26.926262328   8.53 7.26     K1III 78 0
56 HD 138290 * 15 30 55.4332050912 +08 34 44.731399008   6.921 6.563     F2Vs 109 0
57 RX J1535.3+0909 Ro* 15 35 22.7596069992 +09 09 10.576928052   12.41 11.53   9.878 K4Ve 15 0
58 * lam Ser PM* 15 46 26.6142121632 +07 21 11.047378824 5.13 5.03 4.42 3.92 3.60 G0-V 618 0
59 HD 142361 TT* 15 54 59.8695458688 -23 47 18.180029616   9.68 8.960   8.092 G3V 74 0
60 * eps CrB PM* 15 57 35.2514020181 +26 52 40.366652765 6.650 5.360 4.130 3.27 2.64 K2IIIab 280 1
61 CD-22 11298 Or* 16 01 25.6301810064 -22 40 40.289030832   13.02 13.44     K1IV 75 0
62 V* V1154 Sco Or* 16 02 10.4340916128 -22 41 28.824128520   12.46 11.32 10.96   K5+K5 56 0
63 * ome02 Sco PM* 16 07 24.3270139738 -20 52 07.551954425 5.68 5.17 4.33 3.68 3.25 G4II-III 136 0
64 * d Her * 17 01 36.3612969768 +33 34 05.766475152   5.288 5.267     A3IV 113 0
65 * w Her RG* 17 20 39.5674498400 +32 28 03.877958860 6.08 6.01 5.39 4.89 4.56 G0V 481 0
66 * bet Oph PM* 17 43 28.3519097803 +04 34 02.293206489 5.150 3.930 2.750 1.96 1.38 K2IIICN0.5 490 0
67 BD+18 3497 PM* 17 55 44.8981205376 +18 30 01.385136504 11.495 10.35 9.151 8.427 7.824 K5V 91 0
68 HD 341448 BY* 18 01 00.5157583704 +23 39 45.452185596   11.57 10.557 10.09 9.391 K0 11 0
69 * 68 Oph ** 18 01 45.1974936313 +01 18 18.306278873   4.453 4.429     A0.5Van 153 0
70 * alf CrA PM* 19 09 28.3415149600 -37 54 16.107840507   4.146 4.087     A2Va 120 0
71 1E 1907.0-6405 * 19 11 45.7 -64 00 15     11.79     K4V 7 0
72 * eta Del PM* 20 33 57.0419447520 +13 01 37.933915620   5.453 5.380     A3IVs 75 0
73 V* HS Aqr SB* 20 40 53.9957742720 -00 35 50.685516528   9.75 9.152   8.417 F8/G0(V) 48 0
74 * eta Cap ** 21 04 24.2968539274 -19 51 18.330775981 5.07 5.02 4.84 4.68 4.61 A5V 121 0
75 V* KV Peg EB* 21 22 03.6604613328 +17 07 51.484092564   11.98 11.45 11.46   F6 15 0
76 2E 2125.5-1503 * 21 28 16.3 -14 50 05           ~ 4 0
77 * 9 Peg V* 21 44 30.6958020785 +17 21 00.062899998 6.48 5.52 4.35 3.53 2.98 G5Ib 274 0
78 [BSF97] J215038.77+143342.3 * 21 50 38.85 +14 33 42.5     11.35     K3IV/V 14 0
79 * mu. PsA PM* 22 08 23.0113421424 -32 59 18.491668224 4.60 4.55 4.50 4.43 4.38 A1.5IVn 132 0
80 * ksi Peg PM* 22 46 41.5798542334 +12 10 22.388860108 4.66 4.69 4.20 3.73 3.42 F6V 406 0
81 RX J2256.8+0235 Ro* 22 56 49.5199589280 +02 35 39.048958536   11.18 10.327   9.327 K1IV 18 0
82 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1216 1
83 HD 218033 * 23 04 39.9472990128 +08 51 11.589421500   8.60 7.37     K5 18 0
84 HD 218023 ** 23 05 14.8499556624 -44 11 38.495633676   10.49 9.908 9.76   G3/5V 25 0
85 * gam Tuc PM* 23 17 25.7564454336 -58 14 08.524954176 4.35 4.37 3.98 3.57 3.33 F4V 169 0
86 2E 2315.1-3640 * 23 17 52.3 -36 24 34     11.26     K2V 8 0
87 HD 222111 PM* 23 37 49.1263465872 +03 22 12.849885192   7.75 7.28     F3V 37 0
88 * iot Psc PM* 23 39 57.0406036160 +05 37 34.653911951 4.640 4.620 4.120 3.68 3.37 F7V 641 0
89 V* BS Psc BY* 23 52 24.3672858072 -00 55 59.825843904   11.48 10.76     G7V 26 0

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