VISIONS A Near-Infrared Star Formation Atlas of all nearby star formation complexes J. Alves, S. Meingast, H. Bouy

California The VISIONS survey is a sub-arcsec near-infrared atlas of all nearby (d <500 pc) star formation complexes. Initiated with VISTA in the Southern hemisphere (approved Public Survey starting in Apr. 2017), we propose to extend it to the Northern hemisphere with PANIC. This atlas will become the community's reference star formation database, covering the mass spectrum down to a few Jupiter masses and spatial resolutions reaching 100-250 AU. The survey will cover over ~1000deg2 distributed over 13 star forming complexes of Ophiuchus, Lupus, Corona Australis, Chamaeleon, Orion, and the Pipe Nebula (from VISTA) and Taurus, Ser- W40 pens, Serpens-South/W40, California, Perseus, Lambda Ori and LDN1551 (PANIC) and is planned to be finished three years after the observations commence.

Strategy The strategy is designed to maximize the scientific outcomes, including deep multi-wavelength photometry and multi-epoch astrometric and photometric measurements. VISIONS is separated Serpens into three sub-surveys. Wide astrometric survey: consists in a large-scale H-band imaging of the target regions distributed over six epochs with a limiting magnitude of H~19 mag. The immediate objective of the wide survey is to derive positions and proper motions of the embedded and dispersed young stellar population inaccessible to Gaia.

Deep survey: complementary to the wide survey, the deep survey will image the high-col- Perseus umn density regions of the star-forming complexes. The deep survey features single JHKs ob- servations reaching limiting magnitudes of J~21.5 mag, H~20.5 mag, and Ks~19.5 mag. Control fields: for statistical comparison with the galactic field population VISIONS also in- cludes a set of control fields with the same limiting magnitudes and similar strategy as the deep observations.

Taurus

30º Ophiuchus

Serpens Lupus

0º Taurus λOri California Serpens South Musca W40 LDN1551

Galactic Latitude Perseus Cha -30º CrA Orion LDN1551

90º 0º 270º Galactic longitude Targets Lambda Ori This Planck 857Ghz map shows the clouds targetted by VISIONS. The southern clouds observed with VISTA are represented in blue. The northern clouds to be observed with PANIC are represented in red. The exact coverage of the PANIC observations remains to be defined.

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