J/A+A/641/A156 IC 4665 multi-band photometry (Miret-Roig+, 2020)
Searching for debris discs in the 30 Myr open cluster IC 4665.
Miret-Roig N., Huelamo N., Bouy H.
<Astron. Astrophys. 641, A156 (2020)>
=2020A&A...641A.156M 2020A&A...641A.156M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry, infrared ; Optical
Keywords: circumstellar matter - infrared: stars -
open clusters and associations: individual: IC 4665
Abstract:
Debris discs orbiting young stars are key to understand dust evolution
and the planetary formation process.We take advantage of a recent
membership analysis of the 30Myr nearby open cluster IC 4665 based on
the Gaia and DANCe surveys to revisit the disc population of this
cluster.
We aim to study the disc population of IC 4665 using Spitzer (MIPS and
IRAC) and WISE photometry.
We use several colour-colour diagrams with empirical photospheric
sequences to detect the sources with an infrared excess.
Independently, we also fit the spectral energy distribution (SED) of
our debris disc candidates with the Virtual Observatory SED analyser
(VOSA) which is capable of automatically detecting infrared excesses
and provides effective temperature estimates.
We find six candidates debris disc host-stars (five with MIPS and one
with WISE) and two of them are new candidates. We estimate a disc
fraction of 24±10% for the B-A stars, where our sample is expected
to be complete. This is similar to what has been reported in other
clusters of similar ages (Upper Centaurus Lupus, Lower Centaurus Crux,
the $β$ Pictoris moving group, and the Pleiades). For solar type
stars we find a disk fraction of 9±9%, lower than that observed in
regions with comparable ages.
Our candidates debris disc host-stars are excellent targets to be
studied with ALMA or the future James Webb Space Telescope (JWST).
Description:
Table A.1 contains all the photometric data analysed in this work.
The photometry comes from the Gaia DR2 catalogue, the DANCe catalogue
(J/A+A/631/A57) and the WISE catalogue.
The Spitzer photometry has been reduced and measured in this work.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 876 820 Photometric bands used to detect an IR excess
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See also:
J/A+A/631/A57 : IC 4665 DANCe (Miret-Roig+, 2019)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 18 F18.14 deg RAdeg Rigth ascension (J2000)
20- 37 F18.16 deg DEdeg Declination (J2000)
39- 56 F18.15 mag Gmag ? Gaia DR2 G magnitude
58- 78 F21.19 mag e_Gmag ? Standard error of G magnitude
80- 97 F18.15 mag BPmag ? Gaia DR2 BP magnitude
99-118 F20.18 mag e_BPmag ? Standard error of BP magnitude
120-138 F19.16 mag RPmag ? Gaia DR2 RP magnitude
140-159 F20.18 mag e_RPmag ? Standard error of RP magnitude
161-178 F18.15 mag gmag ? Pan-STARRS PS1 g magnitude
180-199 F20.18 mag e_gmag ? Standard error of Pan-STARRS PS1 g magnitude
201-218 F18.15 mag rmag ? Pan-STARRS PS1 r magnitude
220-239 F20.18 mag e_rmag ? Standard error of Pan-STARRS PS1 r magnitude
241-258 F18.15 mag imag ? Pan-STARRS PS1 i magnitude
260-279 F20.18 mag e_imag ? Standard error of Pan-STARRS PS1 i magnitude
281-298 F18.15 mag zmag ? Pan-STARRS PS1 z magnitude
300-319 F20.18 mag e_zmag ? Standard error of Pan-STARRS PS1 z magnitude
321-338 F18.15 mag ymag ? Pan-STARRS PS1 y magnitude
340-359 F20.18 mag e_ymag ? Standard error of Pan-STARRS PS1 y magnitude
361-379 F19.16 mag Jmag ? 2MASS J magnitude
381-400 F20.18 mag e_Jmag ? Standard error of J magnitude
402-420 F19.16 mag Hmag ? 2MASS H magnitude
422-441 F20.18 mag e_Hmag ? Standard error of H magnitude
443-461 F19.16 mag Ksmag ? 2MASS Ks magnitude
463-482 F20.18 mag e_Ksmag ? Standard error of Ks magnitude
484-502 F19.16 mag W1mag ? WISE/W1 magnitude (3.35um)
504-523 F20.18 mag e_W1mag ? Standard error of W3 magnitude (11.6um)
525 I1 --- f_W1mag [0/1] Flag 1 indicates the photometric
measurements used in the study
527 A1 --- l_W1mag Upper limit flag on W1mag
529-547 F19.16 mag W2mag ? WISE/W2 magnitude (4.6um)
549-568 F20.18 mag e_W2mag ? Standard error of W2 magnitude (4.6um)
570 I1 --- f_W2mag [0/1] Flag 1 indicates the photometric
measurements used in the study
572 A1 --- l_W2mag Upper limit flag on W2mag
574-592 F19.16 mag W3mag ? WISE/W3 magnitude (11.6um)
594-613 F20.18 mag e_W3mag ? Standard error of W3 magnitude (11.6um)
615 I1 --- f_W3mag [0/1] Flag 1 indicates the photometric
measurements used in the study
617 A1 --- l_W3mag Upper limit flag on W3mag
619-636 F18.16 mag W4mag ? WISE/W4 magnitude (22.1um)
638-656 F19.17 mag e_W4mag ? Standard error of W4 magnitude (22.1um)
658 I1 --- f_W4mag [0/1] Flag 1 indicates the photometric
measurements used in the study
660 A1 --- l_W4mag Upper limit flag on W4mag
662-680 F19.16 mag IRAC1 ? IRAC/I1 magnitude (3.6um)
682-701 F20.18 mag e_IRAC1 ? Standard error of I1 magnitude (3.6um)
703 I1 --- f_IRAC1 [0/1] Flag 1 indicates the photometric
measurements used in the study
705-723 F19.16 mag IRAC2 ? IRAC/I2 magnitude (4.5um)
725-745 F21.18 mag e_IRAC2 ? Standard error of I2 magnitude (4.5um)
747 I1 --- f_IRAC2 [0/1] Flag 1 indicates the photometric
measurements used in the study
749-766 F18.15 mag IRAC3 ? IRAC/I3 magnitude (5.8um)
768-787 F20.18 mag e_IRAC3 ? Standard error of I3 magnitude (5.8um)
789 I1 --- f_IRAC3 [0/1] Flag 1 indicates the photometric
measurements used in the study
791-809 F19.16 mag IRAC4 ? IRAC/I4 magnitude (8um)
811-831 F21.18 mag e_IRAC4 ? Standard error of I4 magnitude (8um)
833 I1 --- f_IRAC4 [0/1] Flag 1 indicates the photometric
measurements used in the study
835-853 F19.16 mag MIPS1 ? MIPS/M1 magnitude (24um)
855-874 F20.18 mag e_MIPS1 ? Standard error of M1 magnitude (24um)
876 I1 --- f_MIPS1 [0/1] Flag 1 indicates the photometric
measurements used in the study
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Acknowledgements:
Nuria Miret-Roig, nuria.miret-roig(at)u-bordeaux.fr
(End) Patricia Vannier [CDS] 15-Jul-2020