TY - JOUR
T1 - The Gaia spectrophotometric standard stars survey. I. Preliminary results
AU - Pancino, E.
AU - Altavilla, G.
AU - Marinoni, S.
AU - Cocozza, G.
AU - Carrasco, J. M.
AU - Bellazzini, M.
AU - Bragaglia, A.
AU - Federici, L.
AU - Rossetti, E.
AU - Cacciari, C.
AU - Nunez, L. Balaguer
AU - Castro, A.
AU - Figueras, F.
AU - Pecci, F. Fusi
AU - Galleti, S.
AU - Gebran, M.
AU - Jordi, C.
AU - Lardo, C.
AU - Masana, E.
AU - Monguio Montells, Maria
AU - Montegriffo, P.
AU - Ragaini, S.
AU - Schuster, W.
AU - Trager, S.
AU - Vilardell, F.
AU - Voss, H.
N1 - This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2012 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
The version of record is available online at doi:10.1111/j.1365-2966.2012.21766.x
PY - 2012/11/1
Y1 - 2012/11/1
N2 - We describe two ground based observing campaigns aimed at building a grid of approximately 200 spectrophotometric standard stars (SPSS), with an internal ~1% precision and tied to Vega within ~3%, for the absolute flux calibration of data gathered by Gaia, the ESA astrometric mission. The criteria for the selection and a list of candidates are presented, together with a description of the survey strategy and the adopted data analysis methods. We also discuss a short list of notable rejected SPSS candidates and difficult cases, based on identification problems, literature discordant data, visual companions, and variability. In fact, all candidates are also monitored for constancy (within \pm5 mmag, approximately). In particular, we report on a CALSPEC standard, 1740346, that we found to be a delta Scuti variable during our short-term monitoring (1-2 h) campaign.
AB - We describe two ground based observing campaigns aimed at building a grid of approximately 200 spectrophotometric standard stars (SPSS), with an internal ~1% precision and tied to Vega within ~3%, for the absolute flux calibration of data gathered by Gaia, the ESA astrometric mission. The criteria for the selection and a list of candidates are presented, together with a description of the survey strategy and the adopted data analysis methods. We also discuss a short list of notable rejected SPSS candidates and difficult cases, based on identification problems, literature discordant data, visual companions, and variability. In fact, all candidates are also monitored for constancy (within \pm5 mmag, approximately). In particular, we report on a CALSPEC standard, 1740346, that we found to be a delta Scuti variable during our short-term monitoring (1-2 h) campaign.
KW - Techniques: photometric
KW - techniques: spectroscopic
KW - catalogues
KW - stars: variables: : δ Scuti.
U2 - 10.1111/j.1365-2966.2012.21766.x
DO - 10.1111/j.1365-2966.2012.21766.x
M3 - Article
SN - 0035-8711
VL - 426
SP - 1767
EP - 1781
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -