Hi-GAL2pi. Completing the Herschel infrared Galactic Plane Survey as the fundamental step towards a bottom-up model of the Milky Way as a star-formation engine
Hi-GAL2pi will complete the 5-band far-IR survey of the Galactic Plane (GP), using PACS and SPIRE in pMode to map the two Galactic longitude areas that are not covered by the Hi-GAL KP nor its OT1 extension to the outer Galaxy. These two virgul60 longitude-wide slices centered toward the cardinal directions l=90 and l=270 include critical regions with uniquely favourable observing conditions found nowhere else in the Galaxy: a) the longest available panoramic view of the Persus Arm, which is the arm with the least foreground contamination from the sun.s viewpoint; b) the largely unexplored inter-arm region between the Persus and Carina Arms that spans most of the l=270 slice, that alone can be observed relatively free of confusion from our vantage point. The complete census of temperature, mass, and luminosity of filaments, clumps, cores and YSOs in these two regions will provide a spatially resolved measurement of the arm/inter-arm contrast in star formation rate (SFR) and efficiency (SFE), as well as a panoramic and unconfused view of the SFR and SFE along a full spiral arm extending from the Molecular Ring to the outer co-rotation Galactocentric radius. These observables, not accessible in the GP area covered in Hi-GAL KP or OT1 programs, will uniquely enable the critical steps in our understanding of the mechanisms responsible for the assembly, formation and fragmentation of the HI superclouds and the molecular clouds on spiral arms, and thus lay the foundations for a predictive global model of star formation in the Galaxy, that may serve as a template for Extragalactic studies. The completion of the Herschel Galactic Plane survey will establish a unique legacy that will be a keystone for all future Galactic and much extragalactic research, with data products that will be mined for decades by future generations and used for research not yet envisioned, with rich potential for serendipitous ... discoveries. Given our demonstrated community-oriented approach, we again waive our proprietary period.
Publication
The Hi-GAL compact source catalogue - II. The 360° catalogue of clump physical properties . Elia Davide et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2021MNRAS.504.2742E , A global view on star formation: the GLOSTAR Galactic plane survey. III. 6.7 GHz methanol maser survey in Cygnus X . Ortiz-León Gisela N. et al. . Astronomy and Astrophysics . null . null . 2021A&A...651A..87O , Clustered star formation toward Berkeley 87/ON2. I. Multiwavelength census and the population overlap problem . de la Fuente Diego et al. . Astronomy and Astrophysics . null . null . 2021A&A...650A.156D , A Multiwavelength Look at Galactic Massive Star-forming Regions . Binder Breanna A. et al. . The Astrophysical Journal, Volume 864, Issue 2, article id. 136, 29 pp. (2018). . 864 . 10.3847\/1538-4357\/aad7b2 . 2018ApJ...864..136B , Demonstration of a Novel Method for Measuring Mass-loss Rates for Massive Stars . Kobulnicky Henry A. et al. . The Astrophysical Journal, Volume 856, Issue 1, article id. 74, 11 pp. (2018). . 856 . 10.3847\/1538-4357\/aab3e0 . 2018ApJ...856...74K , First Extended Catalogue of Galactic bubble infrared fluxes from WISE and Herschel surveys . Bufano F. et al. . Monthly Notices of the Royal Astronomical Society, Volume 473, Issue 3, p.3671-3692 . 473 . 10.1093\/mnras\/stx2560 . 2018MNRAS.473.3671B , The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope . Scicluna P. et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2022MNRAS.512.1091S , KOSMA 12CO(2-1) and (3-2) observatio...ns toward Infrared Dark Clouds . Li Dalei et al. . Astrophysics and Space Science, Volume 361, Issue 7, article id.220, 25 pp. . 361 . 10.1007\/s10509-016-2807-z . 2016Ap&SS.361..220L , The Hi-GAL catalogue of dusty filamentary structures in the Galactic plane . Schisano Eugenio et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2020MNRAS.492.5420S , Star-forming content of the giant molecular filaments in the Milky Way . Zhang M. et al. . Astronomy & Astrophysics, Volume 622, id.A52, 57 pp. . 622 . 10.1051\/0004-6361\/201732400 . 2019A&A...622A..52Z , The evolutionary status of protostellar clumps hosting class II methanol masers . Jones B. M. et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2020MNRAS.493.2015J , Star-forming regions at the periphery of the supershell surrounding the Cyg OB1 association - II. ISM kinematics and YSOs in the star cluster vdB 130 region . Sitnik T. G. et al. . Monthly Notices of the Royal Astronomical Society . null . null . 2019MNRAS.486.2449S , Chemical Evolution of N2H+ in Six Massive Star-forming Regions . Yu Nai-Ping et al. . The Astrophysical Journal, Volume 865, Issue 2, article id. 135, 11 pp. (2018). . 865 . 10.3847\/1538-4357\/aadb94 . 2018ApJ...865..135Y , Star-Gas Surface Density Correlations in 12 Nearby Molecular Clouds. I. Data Collection and Star-sampled Analysis . Pokhrel Riwaj et al. . The Astrophysical Journal . null . null . 2020ApJ...896...60P , Multitemperature mapping of dust structures throughout the Galactic Plane using the PPMAP tool with Herschel Hi-GAL data . Marsh K. A. et al. . Monthly Notices of the Royal Astronomical Society, Volume 471, Issue 3, p.2730-2742 . 471 . 10.1093\/mnras\/stx1723 . 2017MNRAS.471.2730M , Infrared Photometric Properties of 709 Candidate Stellar Bowshock Nebulae . Kobulnicky Henry A. et al. . The Astronomical Journal, Volume 154, Issue 5, article id. 201, 18 pp. (2017). . 154 . 10.3847\/1538-3881\/aa90ba . 2017AJ....154..201K , Star-forming regions at the periphery of the supershell surrounding the Cyg OB1 association - I. The star cluster vdB 130 and its ambient gas and dust medium . Sitnik T. G. et al. . Monthly Notices of the Royal Astronomical Society, Volume 454, Issue 3, p.2486-2501 . 454 . 10.1093\/mnras\/stv1961 . 2015MNRAS.454.2486S , Thermal balance and comparison of gas and dust properties of dense clumps in the Hi-GAL survey . Merello M. et al. . Monthly Notices of the Royal Astronomical Society, Volume 483, Issue 4, p.5355-5379 . 483 . 10.1093\/mnras\/sty3453 . 2019MNRAS.483.5355M ,
Instrument
SPIRE\/PACS parallel_SpirePacsParallel_
Temporal Coverage
2012-04-11T01:10:25Z/2012-11-15T09:02:42Z
Version
SPG v14.2.0
Mission Description
Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
European Space Agency, 2012, Hi-Gal2Pi. Completing The Herschel Infrared Galactic Plane Survey As The Fundamental Step Towards A Bottom-Up Model Of The Milky Way As A Star-Formation Engine, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-zeyqlm9
