2023A&A...674A...4E


Query : 2023A&A...674A...4E

2023A&A...674A...4E - Astronomy and Astrophysics, volume 674A, 4 (2023/6-1)

Gaia Data Release 3 The Gaia Andromeda Photometric Survey.

EVANS D.W., EYER L., BUSSO G., RIELLO M., DE ANGELI F., BURGESS P.W., AUDARD M., CLEMENTINI G., GAROFALO A., HOLL B., JEVARDAT DE FOMBELLE G., LANZAFAME A.C., LECOEUR-TAIBI I., MOWLAVI N., NIENARTOWICZ K., PALAVERSA L. and RIMOLDINI L.

Abstract (from CDS):

Context. As part of Gaia Data Release 3 (Gaia DR3), epoch photometry has been released for 1.2 million sources centred on M 31. This is a taster for Gaia Data Release 4 where all the epoch photometry will be released.
Aims. In this paper, the content of the Gaia Andromeda Photometric Survey (GAPS) is described, including statistics to assess the quality of the data. Known issues with the photometry are also outlined.
Methods. Methods are given to improve interpretation of the photometry, in particular, a method for error renormalisation. Also, use of correlations between the three photometric passbands allows clearer identification of variables, and is not affected by false detections caused by systematic effects.
Results. GAPS presents a unique opportunity to look at Gaia epoch photometry that has not been preselected based on variability. This allows investigations to be carried out that can be applied to the rest of the sky using the mean source results. Additionally, scientific studies of variability can be carried out on M 31 and the Milky Way in general.

Abstract Copyright: © The Authors 2023

Journal keyword(s): instrumentation: photometers - techniques: photometric - Galaxy: general - stars: variables: general - Local Group

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 M 110 GiG 00 40 22.0572349992 +41 41 07.507220136   8.92 8.07     ~ 1315 1
2 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2164 2
3 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12762 1
4 ATO J015.7773+44.1030 EB* 01 03 06.5616894576 +44 06 11.039947884   12.75 12.49     ~ 3 0
5 NGC 2516 OpC 07 58 06.5 -60 48 00           ~ 722 0
6 NAME UMi Galaxy G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1370 0
7 NAME Local Group GrG ~ ~           ~ 8500 0

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