2013A&A...549A..49B


Query : 2013A&A...549A..49B

2013A&A...549A..49B - Astronomy and Astrophysics, volume 549A, 49-49 (2013/1-1)

SOPHIE+: first results of an octagonal-section fiber for high-precision radial velocity measurements.

BOUCHY F., DIAZ R.F., HEBRARD G., ARNOLD L., BOISSE I., DELFOSSE X., PERRUCHOT S. and SANTERNE A.

Abstract (from CDS):

High-precision spectrographs play a key role in exoplanet searches and Doppler asteroseismology using the radial velocity technique. The 1 m/s level of precision requires very high stability and uniformity of the illumination of the spectrograph. In fiber-fed spectrographs such as SOPHIE, the fiber-link scrambling properties are one of the main conditions for high precision. To significantly improve the radial velocity precision of the SOPHIE spectrograph, which was limited to 5-6m/s, we implemented a piece of octagonal-section fiber in the fiber link. We present here the scientific validation of the upgrade of this instrument, demonstrating a real improvement. The upgraded instrument, renamed SOPHIE+, reaches radial velocity precision in the range of 1-2m/s. It is now fully efficient for the detection of low-mass exoplanets down to 5-10M and for the identification of acoustic modes down to a few tens of cm/s.

Abstract Copyright:

Journal keyword(s): instrumentation: spectrographs - techniques: radial velocities - planetary systems - stars: oscillations

Simbad objects: 18

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Number of rows : 18
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 * eta Cas PM* 00 49 06.2945942922 +57 48 54.638239716 4.04 4.02 3.44 2.94 2.58 F9V 621 0
2 HD 7924b Pl 01 21 59.1132210377 +76 42 37.037320840           ~ 33 1
3 HD 7924 * 01 21 59.1137270904 +76 42 37.038255120   8.018 7.167     K0.5V 135 1
4 HD 9407 PM* 01 34 33.2647932084 +68 56 53.289515638   7.21   6.1   G6.5V 144 0
5 HD 30708 PM* 04 51 29.4431041608 +35 48 54.503773128 7.720 7.470 6.790     G5 55 0
6 HD 55575 PM* 07 15 50.1391766472 +47 14 23.868404124 6.19 6.16   5.2   F9V 285 0
7 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1836 0
8 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 592 1
9 Ross 905b Pl 11 42 11.0933874353 +26 42 23.658083337           ~ 739 1
10 * bet CVn ** 12 33 44.5442516547 +41 21 26.921352859 4.91 4.86 4.25 3.73 3.42 G0V 563 0
11 HD 139324 PM* 15 36 12.6619090032 +35 42 19.424436840 8.260 8.100   7.1   G5 42 0
12 HD 147512 PM* 16 22 32.7220397832 -04 14 57.290559972   8.06 7.33     G8/K0V 76 0
13 * sig Dra PM* 19 32 21.5902098601 +69 39 40.235805206 5.860 5.460 4.680 4.04 3.63 K0V 611 0
14 HD 190360c Pl 20 03 37.4049065078 +29 53 48.495330996           ~ 50 1
15 HD 190360 PM* 20 03 37.4050868074 +29 53 48.492435887   6.44   5.2   G7IV-V 425 1
16 HD 219828 * 23 18 46.7341555224 +18 38 44.619358200   8.68 8.01     G0IV 105 1
17 HD 219828b Pl 23 18 46.7342252140 +18 38 44.615175013           ~ 27 1
18 HD 221354 PM* 23 31 22.2087431778 +59 09 55.867801045   7.57   6.2   K0V 162 0

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2023.02.04-10:35:06

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