2004A&A...424..719L


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.07CET20:27:47

2004A&A...424..719L - Astronomy and Astrophysics, volume 424, 719-726 (2004/9-3)

First observations with an H-band integrated optics beam combiner at the VLTI.

LEBOUQUIN J.B., ROUSSELET-PERRAUT K., KERN P., MALBET F., HAGUENAUER P., KERVELLA P., SCHANEN I., BERGER J.P., DELBOULBE A., AREZKI B. and SCHOELLER M.

Abstract (from CDS):

This paper reports results obtained with the Very Large Telescope Interferometer Commissioning Instrument (VLTI-VINCI) where the fiber interferometric coupler MONA was temporarily replaced by an integrated optics beam combiner (IONIC). The two-beam combiner operating in the H atmospheric band was tested at Paranal during two weeks in July 2002. Fringes were recorded on several stars with the siderostats and the Unit Telescopes (UT). We demonstrate that integrated optics allows beam combination with a high interferometric efficiency, stability and spatial filtering. The instrumental visibility of VLTI+IONIC is better than 85%, which is just 5% under the visibility of the IONIC device alone. During this run, the flux injection in the IONIC combiner was not optimized since we used the K-band MONA optics. However, we obtain fringes with the 35cm siderostats on a star of magnitude mH=2.47 (κ2 Scl). It allows us to extrapolate a magnitude around mH∼6 with 8m telescopes without adaptive optics and in the same poor injection conditions.

Abstract Copyright:

Journal keyword(s): techniques: interferometric - methods: data analysis - instrumentation: interferometers

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * kap02 Scl * 00 11 34.4207812578 -27 47 58.998278679   6.756 5.404     K2III 43 0
2 * iot Cet * 00 19 25.6741634 -08 49 26.111055 5.94 4.77 3.55 2.70 2.11 K1+IIICN0.5 169 0
3 * alf Eri Be* 01 37 42.84548 -57 14 12.3101 -0.36 0.30 0.46 0.49 0.60 B6Vpe 447 0
4 * chi Phe PM* 02 01 42.3769730947 -44 42 48.626974441 8.45 6.63 5.14 3.92 3.03 K5IV 57 0
5 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1734 1
6 * bet Ori s*b 05 14 32.27210 -08 12 05.8981 -0.56 0.10 0.13 0.13 0.15 B8Iae 733 0
7 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1157 0
8 * E Hya PM* 14 50 17.3014618197 -27 57 37.338519560 7.28 5.81 4.41 3.33 2.57 K2.5IIIbFe-1: 77 0
9 * eta Ser PM* 18 21 18.6005560 -02 53 55.776595 4.84 4.19 3.25 2.55 2.05 K0III-IV 356 0
10 * lam Sgr PM* 18 27 58.2407185 -25 25 18.114589 4.75 3.85 2.81 2.06 1.50 K1IIIb 261 0
11 * alf Aql dS* 19 50 46.99855 +08 52 05.9563 1.07 0.98 0.76 0.62 0.49 A7Vn 829 0
12 HD 189831 PM* 20 03 33.4657417275 -37 56 26.478353712   6.176 4.764     K4III 40 0
13 * alf Ind PM* 20 37 34.0320077 -47 17 29.402601 4.90 4.11 3.11     K0III-IV 124 0
14 * 24 Cap PM* 21 07 07.6673269 -25 00 21.079041 8.04 6.11 4.50 3.22 2.24 M1-III 75 0
15 * tau Aqr * 22 49 35.5015682 -13 35 33.476641 7.51 5.57 3.98 2.79 1.84 M0III 79 0
16 HD 216149 * 22 51 02.1592317599 -39 09 24.607417936   6.851 5.400     K3III 53 0
17 * alf PsA ** 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1135 3

    Equat.    Gal    SGal    Ecl

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