2014A&A...566A..35S


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.18CEST22:45:47

2014A&A...566A..35S - Astronomy and Astrophysics, volume 566A, 35-35 (2014/6-1)

The HARPS search for southern extra-solar planets. XXXV. The interesting case of HD 41248 : stellar activity, no planets ?

SANTOS N.C., MORTIER A., FARIA J.P., DUMUSQUE X., ADIBEKYAN V.Z., DELGADO-MENA E., FIGUEIRA P., BENAMATI L., BOISSE I., CUNHA D., GOMES DA SILVA J., LO CURTO G., LOVIS C., MARTINS J.H.C., MAYOR M., MELO C., OSHAGH M., PEPE F., QUELOZ D., SANTERNE A., SEGRANSAN D., SOZZETTI A., SOUSA S.G. and UDRY S.

Abstract (from CDS):

The search for planets orbiting metal-poor stars is of utmost importance for our understanding of planet formation models. However, no dedicated searches have been conducted so far for very low mass planets orbiting such objects. Only a few cases of low-mass planets orbiting metal-poor stars are thus known. Amongst these, HD41248 is a metal-poor, solar-type star on the orbit of which a resonant pair of super-Earth-like planets has been announced. This detection was based on 62 radial velocity measurements obtained with the HARPS spectrograph (public data). We present a new planet search program that is using the HARPS spectrograph to search for Neptunes and super-Earths that orbit a sample of metal-poor FGK dwarfs. We then present a detailed analysis of 162 additional radial velocity measurements of HD41248, obtained within this program, with the goal of confirming the existence of the proposed planetary system. We analysed the precise radial velocities, obtained with the HARPS spectrograph, together with several stellar activity diagnostics and line profile indicators. A careful analysis shows no evidence for the planetary system. One of the signals, with a period of ∼25days, is shown to be related to the rotational period of the star, and is clearly seen in some of the activity proxies. We were unable to convincingly retrieve the remaining signal (P∼18days) in the new dataset. We discuss possible causes for the complex (evolving) signals observed in the data of HD41248, proposing that they might be explained by the appearance and disappearance of active regions on the surface of a star with strong differential rotation, or by a combination of the sparse data sampling and active region evolution.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: HD 41248 - stars: solar-type - stars: activity - stars: abundances - surveys

VizieR on-line data: <Available at CDS (J/A+A/566/A35): table1.dat hd41248.dat>

Simbad objects: 110

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Number of rows : 110

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 HD 224817 PM* 00 00 58.2793839501 -11 49 25.464459129   9.393 9.113     G2V 57 0
2 HD 208 PM* 00 06 53.8806773685 -03 37 34.549791554   8.73 8.19     G1V 31 0
3 HD 967 PM* 00 14 04.4786001592 -11 18 41.705975952   8.99 8.38     G6wF7 66 0
4 HD 4597 PM* 00 47 30.7544865350 -36 56 24.703387139   8.39 7.85     F7/8V 68 1
5 HD 11397 PM* 01 51 40.5282497713 -16 19 03.562537261   9.63 9.02     G6IV/V 102 0
6 HD 17548 PM* 02 48 51.8532992837 -01 30 34.766609862   8.66 8.18     F7/G0(V) 74 0
7 HD 17865 PM* 02 50 41.4220324816 -44 04 52.687760164   8.74 8.19     F8V 54 0
8 HD 21132 PM* 03 21 24.2776439135 -61 29 17.088431005   8.35 7.86     F5/6V 37 0
9 HD 22879 Pe* 03 40 22.0654223510 -03 13 01.124769689 7.146 7.222 6.667 6.346 6.016 G0VmF2 420 0
10 HD 26887 PM* 04 14 52.0281091812 -05 23 47.353053503   8.98 8.46     F8/G0V 24 0
11 HD 30053 PM* 04 41 19.7147731514 -52 37 32.858423879   8.68 8.14     F7/8V 31 0
12 HD 31128 PM* 04 52 09.9097489102 -27 03 50.940327190   9.55 9.14     F3/5Vw 117 0
13 HD 38510 PM* 05 45 09.6648582995 -26 59 30.439766826   8.75 8.25     F5/6V 64 0
14 HD 40865 PM* 05 59 55.7937374759 -37 03 24.190925015   9.23 8.61     G5V 52 0
15 HD 41248 PM* 06 00 32.7815442690 -56 09 42.597177626   9.42 8.81     G2V 50 1
16 HD 41323 PM* 06 02 14.6713307827 -44 00 33.512375879   9.35 8.71     G3/5V 39 0
17 CD-56 1617 PM* 06 42 34.9143533169 -56 26 42.366656680   10.16 9.47     ~ 21 0
18 HD 51754 PM* 06 58 38.5387307770 -00 28 49.697886299 9.60 9.567 9.009 8.663 8.334 G2V 108 0
19 CD-57 1633 HV* 07 06 28.9517777029 -57 27 29.118056344   10.04 9.54     F7V 84 0
20 HD 56274 PM* 07 15 50.7953272584 -13 02 58.131028647   8.36 7.79     G7VFe-1.5CH-1.3 112 0
21 HD 59984 PM* 07 32 05.7631181661 -08 52 52.773345653   6.431 5.916     G0VFe-1.6CH-0.5 183 0
22 HD 61902 PM* 07 38 53.6547780139 -51 05 00.089759457   8.73 8.25     F5/6wF2 62 0
23 HD 61986 PM* 07 40 54.3764278789 -26 21 48.627502752   9.30 8.66     G5V 53 0
24 HD 68284 PM* 08 11 49.5874485613 +04 16 28.328065141   8.28 7.75     F7/8V 75 0
25 HD 69611 PM* 08 17 29.3479423950 -03 59 22.619129726   8.32 7.74     G0V 114 0
26 HD 71685 PM* 08 28 16.8933699774 -14 35 16.191520493   8.88 8.35     F7V 22 0
27 CD-53 2307 PM* 08 29 37.8178771285 -54 16 33.036791753   10.28 9.51     K0V 32 0
28 HD 75745 PM* 08 49 35.9592788696 -52 28 35.396914157   10.01 9.44     F8wF2 28 0
29 HD 75530 PM* 08 50 21.0008590344 -05 32 09.696606205   9.93 9.19     G8/K0V 95 0
30 HD 76188 PM* 08 51 27.7392296850 -61 21 46.682323695   7.68 7.16     F7V 34 0
31 BD-08 2534 PM* 08 57 16.8623394960 -09 27 46.970000534   10.17 9.51     G0 21 0
32 HD 77110 PM* 08 59 17.8633552348 -35 18 37.115332341   9.43 8.85     G1V 36 0
33 HD 78747 PM* 09 07 56.5761515149 -50 28 56.809652049   8.25 7.74     G5VFe-1.6CH-1 107 0
34 HD 79601 PM* 09 13 44.6281531458 -42 18 37.470774830   8.55 8.02     G2V 73 0
35 HD 304636 PM* 09 21 37.6013907608 -60 16 55.030802577 12.145 10.955 9.465 8.517 7.511 M0.0 53 0
36 HD 87838 PM* 10 07 33.8085786991 -06 26 21.113320117   8.24 7.72     F7/8V 65 0
37 HD 88474 * 10 09 09.4459342062 -70 21 58.193347436   9.01 8.47     F7IV 27 0
38 HD 88725 PM* 10 14 08.3345668419 +03 09 04.675865338 8.34 8.33 7.73 7.24 6.89 G3/5V 167 0
39 HD 90422 PM* 10 25 29.4913068171 -45 10 57.762571295   8.76 8.24     G0V 37 0
40 HD 91345 Pe* 10 30 04.6049418519 -71 33 39.249378507   9.757 9.510     G0wF3 57 0
41 HD 91379 PM* 10 32 44.4522268588 -19 12 06.296443239   8.66 8.16     F6V 21 0
42 HD 92547 * 10 40 56.0439856308 -13 07 46.300305498   8.65 8.11     F7/G0 39 0
43 HD 93351 PM* 10 46 42.6116725628 -01 41 16.665163849   9.837 9.14     G6V 23 0
44 HD 94444 PM* 10 53 25.6321243288 -44 24 40.789953690   8.62 8.10     F7/8V 54 0
45 HD 97320 PM* 11 11 00.7344947834 -65 25 37.746274848   9.769 9.269     F3V 119 0
46 HD 97783 PM* 11 14 49.9324727633 -23 38 47.925438535   9.67 9.04     G1/2V 54 0
47 HD 98284 PM* 11 17 58.1801308314 -36 35 47.759500428   8.84 8.30     F6V 33 0
48 HD 101612 PM* 11 41 22.4786034442 -26 40 01.886533461   8.01 7.54     F5/6V 36 0
49 HD 101644 PM* 11 41 45.0515840547 -06 41 04.289090433   9.93 9.25     G5V 19 0
50 HD 104800 PM* 12 04 05.5627465798 +03 20 26.708766113   9.80   8.9   G3V 102 0
51 HD 107094 * 12 18 56.4685772803 -45 52 53.585131043   9.785 9.13   8.97 G5V 33 1
52 HD 108564 PM* 12 28 19.1206283467 -16 54 39.776908119   10.43 9.502 9.676   K5Vmetalweak 82 0
53 HD 109684 * 12 36 28.4428924820 +10 43 47.411051389   9.28 8.73     G0 30 0
54 HD 111515 PM* 12 49 44.8285420006 +01 11 16.938721877   8.86   7.7   G6/8V 114 0
55 HD 111777 PM* 12 52 11.6439211468 -56 34 27.987429903   9.07 8.46     G0/3 73 0
56 HD 114076 PM* 13 08 33.9258254292 -41 38 38.952133249   10.21 9.39     K0V 45 0
57 HD 119173 PM* 13 41 42.6831769936 -04 01 45.880964458   9.39 9.158 8.47 9.377 G0V 50 0
58 HD 119949 PM* 13 46 45.6510892003 -20 51 09.223253841   8.61 8.16     G5V 32 0
59 NAME Cen B QSO 13 46 49.04327124 -60 24 29.3552337         15.74 ~ 120 0
60 HD 121004 PM* 13 53 58.1163515488 -46 32 19.526169178   10.112 9.522     G2V 123 0
61 HD 123651 PM* 14 10 04.8132306862 -46 16 10.021497531   8.72 8.19     G0/1V 44 0
62 HD 126681 PM* 14 27 24.9096361739 -18 24 40.457119166   9.939 9.535     G3V 162 0
63 HD 126803 PM* 14 29 03.2566878468 -46 44 28.040667391   9.62 8.94     G5V 51 0
64 HD 126793 PM* 14 30 12.6566476022 -62 51 44.463503453   8.76 8.24     G0wF3/5 56 0
65 HD 128340 PM* 14 37 00.3855233472 -24 02 18.271682051   9.35 8.88     F5/6V 36 0
66 HD 128571 PM* 14 40 39.1113861786 -65 25 06.033587603   8.32 7.82     F7V 33 0
67 HD 129229 * 14 41 18.8085618649 +03 26 55.568804949   8.98 8.41     G0V 32 0
68 HD 131653 PM* 14 55 07.0767873827 -09 05 50.315620521   10.22 9.50     G8V 61 0
69 HD 134088 PM* 15 08 12.5670991059 -07 54 47.535631396   9.266 9.018     G2/3(V) 88 0
70 HD 133633 PM* 15 08 15.1949011068 -59 57 16.605710635   9.44 8.79     G5/8 31 0
71 HD 134440 PM* 15 10 12.9678041572 -16 27 46.510775897 10.69 10.217 9.426 8.913 8.441 K2V 252 0
72 HD 137676 PM* 15 29 19.0322246712 -49 57 11.097799630   8.45 7.69     G8V 47 0
73 HD 141624 PM* 15 53 22.9184812141 -61 21 47.475008592   8.75 8.19     F8/G0V 20 0
74 HD 144589 * 16 07 38.8165885934 -29 57 44.878912211   10.34 9.80     G8/K1(III)+(F) 20 0
75 HD 145417 PM* 16 13 48.5584718157 -57 34 13.843908786 8.663 8.365 7.540 7.054 6.588 K3VFe-1.7 146 0
76 HD 147518 PM* 16 24 56.3594475504 -51 25 44.234007688   10.00 9.38     G3/5V(w) 34 0
77 HD 148211 PM* 16 27 12.8994238166 -22 07 36.477834294   8.22 7.69     F8/G0V 106 0
78 HD 145344 PM* 16 27 32.3465177026 -83 28 33.475645925   8.90 8.42     F5V 31 0
79 HD 148816 PM* 16 30 28.4586643435 +04 10 41.603810207 7.75 7.81 7.28 6.82 6.49 F7V 277 0
80 HD 150177 PM* 16 39 39.1297665715 -09 33 16.513863824   6.794 6.332     F6V 134 0
81 HD 149747 * 17 19 59.4776622869 -87 14 34.622267207   9.80 9.17     F8V 18 0
82 HD 167300 * 18 18 44.5741516676 -61 56 06.850889603   9.73 9.23     F8V 36 0
83 HD 171028 * 18 32 15.4932880849 +06 56 44.685775444   8.93 8.29     G0 48 1
84 HD 171587 PM* 18 36 09.2195939652 -10 53 26.572284080   9.15 8.48     G5V 31 0
85 HD 172568 PM* 18 43 08.7299280004 -45 54 02.780678242   9.17 8.54     G3V 22 0
86 HD 175607 PM* 19 01 05.4888630172 -66 11 33.642423195   9.31 8.61     G6V 51 0
87 HD 176666 PM* 19 05 20.8798468294 -61 41 24.381846784   8.81 8.29     F6V 32 0
88 HD 181720 PM* 19 22 52.9848477979 -32 55 08.591325059   8.44 7.86     G1V 92 1
89 HD 188815 PM* 19 58 58.5412724667 -46 05 16.962275007   7.92 7.50     F5V 72 0
90 HD 190984 * 20 11 30.7151680891 -64 37 13.687105764   9.27 8.73     F8V 45 1
91 HD 193901 PM* 20 23 35.8472360557 -21 22 14.228814044 9.08 9.22 8.67 8.17 7.87 F7V 253 0
92 HD 195633 PM* 20 32 23.9917031781 +06 31 03.251333868 9.05 9.03 8.52     G0Vw 124 0
93 HD 196892 PM* 20 40 49.3803469997 -18 47 33.286582149   8.73 8.23     F6V 105 0
94 HD 196877 PM* 20 42 18.7827687449 -52 41 57.354516831   10.15 8.82 7.99 7.23 K7V 73 0
95 HD 197083 PM* 20 42 27.4723760699 -33 19 43.147790337   9.808 9.189     G3V 33 1
96 HD 197197 PM* 20 42 37.1761395708 -13 05 41.322314605   8.69 8.07     G0V 33 0
97 HD 197536 PM* 20 44 37.0625792081 -10 29 41.176582482   8.72 8.20     F7V 36 0
98 HD 199288 PM* 20 57 40.0679487434 -44 07 45.739637893   7.11 6.52     G2VFe-1.0 165 0
99 HD 199289 PM* 20 58 08.5241060028 -48 12 13.460660433   8.82 8.30     F5V 100 0
100 HD 199604 PM* 20 59 05.2778033189 -25 22 50.999725662   9.14 8.61     G2V 38 0
101 HD 199847 PM* 21 02 39.0156431250 -61 52 49.992757626   9.40 8.81     G2V(w) 27 0
102 HD 207190 PM* 21 47 40.1470362562 -19 34 40.164876629   8.16 7.66     F6V 38 0
103 HD 206998 PM* 21 47 44.0093556349 -55 39 16.549983104   9.23 8.67     G0wF5 41 0
104 HD 207869 PM* 21 55 10.4601626549 -69 01 14.216993913   9.61 8.97     G6V 33 0
105 HD 210752 PM* 22 12 43.53757 -06 28 08.1198   7.92 7.40     G1V 104 0
106 HD 211532 PM* 22 17 50.8031862007 -07 35 16.211124308   10.06 9.27     K0V 12 0
107 HD 215906 PM* 22 50 05.0510931309 -66 03 01.690140179   8.23 7.76     F6/7V 30 0
108 HD 218504 PM* 23 08 42.9099486717 -18 45 07.007760627   8.65 8.11     G1/2wF3 57 0
109 HD 223854 PM* 23 53 06.8936508432 +02 19 52.009683283   8.53 8.07     F5V 38 0
110 HD 224685 PM* 23 59 55.0696838923 -64 22 20.322656517   9.86 9.22     G5V 20 0

    Equat.    Gal    SGal    Ecl

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2019.10.18-22:45:47

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