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


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST01:33:27

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 - 2020
#notes
1 HD 224817 PM* 00 00 58.2793839501 -11 49 25.464459129   9.393 9.113     G2V 58 0
2 HD 208 PM* 00 06 53.8806773685 -03 37 34.549791554   8.73 8.19     G1V 33 0
3 HD 967 PM* 00 14 04.4786001592 -11 18 41.705975952   8.99 8.38     G6wF7 70 0
4 HD 4597 PM* 00 47 30.7544865350 -36 56 24.703387139   8.39 7.85     F7/8V 70 1
5 HD 11397 PM* 01 51 40.5282497713 -16 19 03.562537261   9.63 9.02     G6IV/V 105 0
6 HD 17548 PM* 02 48 51.8532992837 -01 30 34.766609862   8.66 8.18     F7/G0(V) 76 0
7 HD 17865 PM* 02 50 41.4220324816 -44 04 52.687760164   8.74 8.19     F8V 57 0
8 HD 21132 PM* 03 21 24.2776439135 -61 29 17.088431005   8.35 7.86     F5/6V 38 0
9 HD 22879 Pe* 03 40 22.0654223510 -03 13 01.124769689 7.146 7.222 6.667 6.346 6.016 G0VmF2 434 0
10 HD 26887 PM* 04 14 52.0281091812 -05 23 47.353053503   8.98 8.46     F8/G0V 25 0
11 HD 30053 PM* 04 41 19.7147731514 -52 37 32.858423879   8.68 8.14     F7/8V 33 0
12 HD 31128 PM* 04 52 09.9097489102 -27 03 50.940327190   9.55 9.14     F3/5Vw 119 0
13 HD 38510 PM* 05 45 09.6648582995 -26 59 30.439766826   8.75 8.25     F5/6V 65 0
14 HD 40865 PM* 05 59 55.7937374759 -37 03 24.190925015   9.23 8.61     G5V 54 0
15 HD 41248 PM* 06 00 32.7815442690 -56 09 42.597177626   9.42 8.81     G2V 53 1
16 HD 41323 PM* 06 02 14.6713307827 -44 00 33.512375879   9.35 8.71     G3/5V 42 0
17 CD-56 1617 PM* 06 42 34.9143533169 -56 26 42.366656680   10.16 9.47     ~ 22 0
18 HD 51754 PM* 06 58 38.5387307770 -00 28 49.697886299 9.60 9.567 9.009 8.663 8.334 G2V 110 0
19 CD-57 1633 HV* 07 06 28.9517777029 -57 27 29.118056344   10.04 9.54     F7V 86 0
20 HD 56274 PM* 07 15 50.7953272584 -13 02 58.131028647   8.36 7.79     G7VFe-1.5CH-1.3 114 0
21 HD 59984 PM* 07 32 05.7631181661 -08 52 52.773345653   6.431 5.916     G0VFe-1.6CH-0.5 187 0
22 HD 61902 PM* 07 38 53.6547780139 -51 05 00.089759457   8.73 8.25     F5/6wF2 64 0
23 HD 61986 PM* 07 40 54.3764278789 -26 21 48.627502752   9.30 8.66     G5V 56 0
24 HD 68284 PM* 08 11 49.5874485613 +04 16 28.328065141   8.28 7.75     F7/8V 77 0
25 HD 69611 PM* 08 17 29.3479423950 -03 59 22.619129726   8.32 7.74     G0V 117 0
26 HD 71685 PM* 08 28 16.8933699774 -14 35 16.191520493   8.88 8.35     F7V 23 0
27 CD-53 2307 PM* 08 29 37.8178771285 -54 16 33.036791753   10.28 9.51     K0V 34 0
28 HD 75745 PM* 08 49 35.9592788696 -52 28 35.396914157   10.01 9.44     F8wF2 30 0
29 HD 75530 PM* 08 50 21.0008590344 -05 32 09.696606205   9.93 9.19     G8/K0V 97 0
30 HD 76188 PM* 08 51 27.7392296850 -61 21 46.682323695   7.68 7.16     F7V 37 0
31 BD-08 2534 PM* 08 57 16.8623394960 -09 27 46.970000534   10.17 9.51     G0 22 0
32 HD 77110 PM* 08 59 17.8633552348 -35 18 37.115332341   9.43 8.85     G1V 38 0
33 HD 78747 PM* 09 07 56.5761515149 -50 28 56.809652049   8.25 7.74     G5VFe-1.6CH-1 109 0
34 HD 79601 PM* 09 13 44.6281531458 -42 18 37.470774830   8.55 8.02     G2V 77 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 57 0
36 HD 87838 PM* 10 07 33.8085786991 -06 26 21.113320117   8.24 7.72     F7/8V 67 0
37 HD 88474 * 10 09 09.4459342062 -70 21 58.193347436   9.01 8.47     F7IV 28 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 170 0
39 HD 90422 PM* 10 25 29.4913068171 -45 10 57.762571295   8.76 8.24     G0V 39 0
40 HD 91345 Pe* 10 30 04.6049418519 -71 33 39.249378507   9.757 9.510     G0wF3 59 0
41 HD 91379 PM* 10 32 44.4522268588 -19 12 06.296443239   8.66 8.16     F6V 22 0
42 HD 92547 * 10 40 56.0439856308 -13 07 46.300305498   8.65 8.11     F7/G0 41 0
43 HD 93351 PM* 10 46 42.6116725628 -01 41 16.665163849   9.837 9.14     G6V 24 0
44 HD 94444 PM* 10 53 25.6321243288 -44 24 40.789953690   8.62 8.10     F7/8V 56 0
45 HD 97320 Pe* 11 11 00.7344947834 -65 25 37.746274848   9.769 9.269     F3V 122 0
46 HD 97783 PM* 11 14 49.9324727633 -23 38 47.925438535   9.67 9.04     G1/2V 55 0
47 HD 98284 PM* 11 17 58.1801308314 -36 35 47.759500428   8.84 8.30     F6V 35 0
48 HD 101612 PM* 11 41 22.4786034442 -26 40 01.886533461   8.01 7.54     F5/6V 38 0
49 HD 101644 PM* 11 41 45.0515840547 -06 41 04.289090433   9.93 9.25     G5V 20 0
50 HD 104800 PM* 12 04 05.5627465798 +03 20 26.708766113   9.80   8.9   G3V 104 0
51 HD 107094 * 12 18 56.4685772803 -45 52 53.585131043   9.785 9.13   8.97 G5V 34 1
52 HD 108564 PM* 12 28 19.1206283467 -16 54 39.776908119   10.43 9.502 9.676   K5Vmetalweak 86 0
53 HD 109684 * 12 36 28.4428924820 +10 43 47.411051389   9.28 8.73     G0 32 0
54 HD 111515 PM* 12 49 44.8285420006 +01 11 16.938721877   8.86   7.7   G6/8V 117 0
55 HD 111777 PM* 12 52 11.6439211468 -56 34 27.987429903   9.07 8.46     G0/3 76 0
56 HD 114076 PM* 13 08 33.9258254292 -41 38 38.952133249   10.21 9.39     K0V 47 0
57 HD 119173 PM* 13 41 42.6831769936 -04 01 45.880964458   9.39 9.158 8.47 9.377 G0V 53 0
58 HD 119949 PM* 13 46 45.6510892003 -20 51 09.223253841   8.61 8.16     G5V 34 0
59 NAME Cen B QSO 13 46 49.04327124 -60 24 29.3552337         15.74 ~ 125 0
60 HD 121004 PM* 13 53 58.1163515488 -46 32 19.526169178   10.112 9.522     G2V 126 0
61 HD 123651 PM* 14 10 04.8132306862 -46 16 10.021497531   8.72 8.19     G0/1V 46 0
62 HD 126681 PM* 14 27 24.9096361739 -18 24 40.457119166   9.939 9.535     G3V 164 0
63 HD 126803 PM* 14 29 03.2566878468 -46 44 28.040667391   9.62 8.94     G5V 52 0
64 HD 126793 PM* 14 30 12.6566476022 -62 51 44.463503453   8.76 8.24     G0wF3/5 58 0
65 HD 128340 PM* 14 37 00.3855233472 -24 02 18.271682051   9.35 8.88     F5/6V 38 0
66 HD 128571 PM* 14 40 39.1113861786 -65 25 06.033587603   8.32 7.82     F7V 35 0
67 HD 129229 * 14 41 18.8085618649 +03 26 55.568804949   8.98 8.41     G0V 34 0
68 HD 131653 PM* 14 55 07.0767873827 -09 05 50.315620521   10.22 9.50     G8V 62 0
69 HD 134088 PM* 15 08 12.5670991059 -07 54 47.535631396   9.266 9.018     G2/3(V) 91 0
70 HD 133633 PM* 15 08 15.1949011068 -59 57 16.605710635   9.44 8.79     G5/8 33 0
71 HD 134440 PM* 15 10 12.9678041572 -16 27 46.510775897 10.69 10.217 9.426 8.913 8.441 K2V 256 0
72 HD 137676 PM* 15 29 19.0322246712 -49 57 11.097799630   8.45 7.69     G8V 49 0
73 HD 141624 PM* 15 53 22.9184812141 -61 21 47.475008592   8.75 8.19     F8/G0V 21 0
74 HD 144589 * 16 07 38.8165885934 -29 57 44.878912211   10.34 9.80     G8/K1(III)+(F) 21 0
75 HD 145417 PM* 16 13 48.5584718157 -57 34 13.843908786 8.663 8.365 7.540 7.054 6.588 K3VFe-1.7 150 0
76 HD 147518 PM* 16 24 56.3594475504 -51 25 44.234007688   10.00 9.38     G3/5V(w) 36 0
77 HD 148211 PM* 16 27 12.8994238166 -22 07 36.477834294   8.22 7.69     F8/G0V 107 0
78 HD 145344 PM* 16 27 32.3465177026 -83 28 33.475645925   8.90 8.42     F5V 33 0
79 HD 148816 PM* 16 30 28.4586643435 +04 10 41.603810207 7.75 7.81 7.28 6.82 6.49 F7V 283 0
80 HD 150177 PM* 16 39 39.1297665715 -09 33 16.513863824   6.794 6.332     F6V 136 0
81 HD 149747 * 17 19 59.4776622869 -87 14 34.622267207   9.80 9.17     F8V 19 0
82 HD 167300 * 18 18 44.5741516676 -61 56 06.850889603   9.73 9.23     F8V 38 0
83 HD 171028 * 18 32 15.4932880849 +06 56 44.685775444   8.93 8.29     G0 50 1
84 HD 171587 PM* 18 36 09.2195939652 -10 53 26.572284080   9.15 8.48     G5V 33 0
85 HD 172568 PM* 18 43 08.7299280004 -45 54 02.780678242   9.17 8.54     G3V 23 0
86 HD 175607 PM* 19 01 05.4888630172 -66 11 33.642423195   9.31 8.61     G6V 52 0
87 HD 176666 PM* 19 05 20.8798468294 -61 41 24.381846784   8.81 8.29     F6V 34 0
88 HD 181720 PM* 19 22 52.9848477979 -32 55 08.591325059   8.44 7.86     G1V 94 1
89 HD 188815 PM* 19 58 58.5412724667 -46 05 16.962275007   7.92 7.50     F5V 74 0
90 HD 190984 * 20 11 30.7151680891 -64 37 13.687105764   9.27 8.73     F8V 46 1
91 HD 193901 PM* 20 23 35.8472360557 -21 22 14.228814044 9.08 9.22 8.67 8.17 7.87 F7V 255 0
92 HD 195633 PM* 20 32 23.9917031781 +06 31 03.251333868 9.05 9.03 8.52     G0Vw 126 0
93 HD 196892 PM* 20 40 49.3803469997 -18 47 33.286582149   8.73 8.23     F6V 107 0
94 HD 196877 PM* 20 42 18.7827687449 -52 41 57.354516831   10.15 8.82 7.99 7.23 K7V 76 0
95 HD 197083 PM* 20 42 27.4723760699 -33 19 43.147790337   9.808 9.189     G3V 35 1
96 HD 197197 PM* 20 42 37.1761395708 -13 05 41.322314605   8.69 8.07     G0V 35 0
97 HD 197536 PM* 20 44 37.0625792081 -10 29 41.176582482   8.72 8.20     F7V 39 0
98 HD 199288 PM* 20 57 40.0679487434 -44 07 45.739637893   7.11 6.52     G2VFe-1.0 169 0
99 HD 199289 PM* 20 58 08.5241060028 -48 12 13.460660433   8.82 8.30     F5V 102 0
100 HD 199604 PM* 20 59 05.2778033189 -25 22 50.999725662   9.14 8.61     G2V 40 0
101 HD 199847 PM* 21 02 39.0156431250 -61 52 49.992757626   9.40 8.81     G2V(w) 29 0
102 HD 207190 PM* 21 47 40.1470362562 -19 34 40.164876629   8.16 7.66     F6V 40 0
103 HD 206998 PM* 21 47 44.0093556349 -55 39 16.549983104   9.23 8.67     G0wF5 42 0
104 HD 207869 PM* 21 55 10.4601626549 -69 01 14.216993913   9.61 8.97     G6V 35 0
105 HD 210752 PM* 22 12 43.53757 -06 28 08.1198   7.92 7.40     G1V 105 0
106 HD 211532 PM* 22 17 50.8031862007 -07 35 16.211124308   10.06 9.27     K0V 13 0
107 HD 215906 PM* 22 50 05.0510931309 -66 03 01.690140179   8.23 7.76     F6/7V 31 0
108 HD 218504 PM* 23 08 42.9099486717 -18 45 07.007760627   8.65 8.11     G1/2wF3 59 0
109 HD 223854 PM* 23 53 06.8936508432 +02 19 52.009683283   8.53 8.07     F5V 40 0
110 HD 224685 PM* 23 59 55.0696838923 -64 22 20.322656517   9.86 9.22     G5V 21 0

    Equat.    Gal    SGal    Ecl

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2020.07.10-01:33:27

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