J/A+A/697/A99 SHINE IV. (Chomez+, 2025)
The SPHERE infrared survey for exoplanets (SHINE). IV. Complete observations,
data reduction and analysis, detection performances, and final results.
Chomez A., Delorme P., Lagrange A.-M., Gratton R., Flasseur O., Chauvin G.,
Langlois M., Mazoyer J., Zurlo A., Desidera S., Mesa D., Bonnefoy M.,
Feldt M., Hagelberg J., Meyer M., Vigan A., Ginski C., Kenworthy M.,
Albert D., Bergeon S., Beuzit J.-L., Biller B., Bhowmik T., Boccaletti A.,
Bonavita M., Brandner W., Cantalloube F., Cheetham A., D'Orazi V.,
Dominik C., Fontanive C., Galicher R., Henning T., Janson M., Kral Q.,
Lagadec E., Lazzoni C., Le Coroller H., Ligi R., Maire A.-L., Marleau G.-D.,
Menard F., Messina S., Meunier N., Mordasini C., Moutou C., Mueller A.,
Perrot C., Samland M., Schmid H.M., Schmidt T., Squicciarini V., Sissa E.,
Turatto M., Udry S., Abe L., Antichi J., Asensio-Torres R., Baruffolo A.,
Baudoz P., Baudrand J., Bazzon A., Blanchard P., Bohn A.J.,
Brown Sevilla S., Carbillet M., Carle M., Cascone E., Charton J., Claudi R.,
Costille A., De Caprio V., Delboulbe A., Dohlen K., Engler N., Fantinel D.,
Feautrier P., Fusco T., Gigan P., Girard J.H., Giro E., Gisler D., Gluck L.,
Gry C., Hubin N., Hugot E., Jaquet M., Kasper M., Le Mignant D., Llored M.,
Madec F., Magnard Y., Martinez P., Maurel D., Moeller-Nilsson O.,
Mouillet D., Moulin T., Origne A., Pavlov A., Perret D., Petit C., Pragt J.,
Puget P., Rabou P., Ramos J., Rickman E.L., Rigal F., Rochat S.,
Roelfsema R., Rousset G., Roux A., Salasnich B., Sauvage J.-F., Sevin A.,
Soenke C., Stadler E., Suarez M., Wahhaj Z., Weber L., Wildi F.
<Astron. Astrophys. 697, A99 (2025)>
=2025A&A...697A..99C 2025A&A...697A..99C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Spectra, infrared
Keywords: methods: observational - methods: statistical -
techniques: high angular resolution - techniques: image processing -
planets and satellites: detection - brown dwarfs
Abstract:
Over the past decade, large surveys with state-of-the-art
planet-finder instruments such as Spectro-Polarimetric High-contrast
Exoplanet REsearch on board Very Large Telescope (SPHERE@VLT), coupled
with coronagraphic devices and extreme adaptive optics (AO) systems,
have unveiled around 20 planetary mass companions at a semi-major axis
greater than 10 astronomical units (au). Since direct imaging is the
only detection technique with the ability to probe this outer region
of planetary systems, the SPHERE infrared survey for exoplanets
(SHINE) was designed and conducted from 2015 to 2021 to study the
demographics of such young gas giant planets around 400 young nearby
solar-type stars. The analysis of the first part of the survey focused
on 150 stars (SHINE F150) was already published in a series of papers
in 2021. An additional filler campaign called snapSHINE was conducted
to acquire second epoch data, using shallow observations.
In this paper, we present the observing strategy, data quality, and
point source analysis of the full SHINE statistical sample as well as
snapSHINE.
Both surveys used the SPHERE@VLT instrument with the IRDIS dual band
imager in conjunction with the integral field spectrograph (IFS) and
the angular differential imaging observing technique. All SHINE data
(650 datasets), corresponding to 400 stars, including the targets of
the F150 survey, are processed in a uniform manner, with an advanced
post-processing algorithm called PACO ASDI. An emphasis is put on the
classification and identification of the most promising candidate
companions.
Compared to the previous early analysis SHINE F150, the use of
advanced post-processing techniques significantly improved the
contrast detection limits by one or two magnitudes (x3-x6), which will
allow us to put even tighter constraints on the radial distribution of
young gas giants. This increased sensitivity directly sets SHINE apart
as the largest and deepest direct imaging survey ever conducted. We
detected and classified more than 3500 physical sources. One
additional substellar companion was confirmed during the second phase
of the survey (HIP 74865 B) and several new promising candidate
companions are awaiting follow-up epoch confirmations.
Description:
We process, in a uniform manner, the full F400 SHINE GTO survey using
SPHERE/VLT/ESO.
Tables with the astro-photometry of all detected sources by IRDIS and
IFS, as well as the IFS spectrum of all sub-stellar companions.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
irdis.dat 164 5916 IRDIS detection table
ifs.dat 110 80 IFS detection table
list.dat 59 39 List of spectra
sp/* . 39 Individual spectra
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See also:
J/A+A/651/A70 : SHINE sample definition (Desidera+, 2021)
J/A+A/651/A71 : SHINE II (Langlois+, 2021)
Byte-by-byte Description of file: irdis.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name SIMBAD main identifier
25- 47 A23 --- Object Star name as filled in the OBJECT keywords
in fits files
49- 70 A22 "datime" Obs.Date Observing night
72- 79 A8 --- Filter IRDIS filter
81- 86 F6.1 --- S/N ? Signal to noise ratio
88- 94 F7.2 mas Sep Separation
96-104 F9.2 mas e_Sep ?=999000.0 Error on separation
106-111 F6.2 deg PA Position angle
113-118 F6.2 deg e_PA ?=999.0 error on position angle
120-127 E8.3 --- Contl1 Contrast relative to the star
in the first band
129-136 E8.3 --- e_Contl1 ? Error on contrast relative to the star
in the first band
138-145 E8.3 --- Contl2 Contrast relative to the star
in the second band
147-154 E8.3 --- e_Contl2 ? Error on contrast relative to the star
in the second band
156-174 A19 --- Status Final status of the detection
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Byte-by-byte Description of file: ifs.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 15 A15 --- Name SIMBAD main identifier
17- 39 A23 --- Object Star name as filled in the OBJECT keywords
in fits files
41- 62 A22 "datime" Obs.Date Observing night
64- 69 A6 --- Filter Description of filter
71- 75 F5.1 --- S/N Signal to noise ratio
77- 82 F6.1 mas Sep Separation
84- 89 F6.2 mas e_Sep Error on separation
91- 95 F5.1 deg PA Position angle
97-101 F5.2 deg e_PA Error on position angle
103-110 A8 --- Status Final status of the detection
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- Name Planet name
14- 16 A3 --- Filt [YJH ] Filter names
18- 27 A10 "date" Obs.Date Observation date
29- 59 A31 --- FileName Name of the spectrum file in subdirectory sp
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Byte-by-byte Description of file: sp/*
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Bytes Format Units Label Explanations
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1- 18 F18.16 um lambda Wavelength
20- 29 E10.5 --- Cont Contrast relative to the star
31- 40 E10.5 --- e_Cont Contrast error relative to the star
42- 44 F3.1 --- LimFlux [0/1] Upper limit on the flux,
1 indicate an upper limit
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Acknowledgements:
Antoine Chomez, antoine.chomez(at)obspm.fr
References:
Desidera et al., Paper I, 2021A&A...651A..70D 2021A&A...651A..70D : F150 sample description
Langlois et al., Paper II, 2021A&A...651A..71L 2021A&A...651A..71L :
F150 observations, data reduction and analysis
Vigan et al., Paper III, 2021A&A...651A..72V 2021A&A...651A..72V :
F150 demographics of young giant exoplanets below 300 au with SPHERE
(End) Patricia Vannier [CDS] 24-Feb-2025