Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Hubble Space Telescope Captures UGC 12591: Bulge/disc properties, star formation and 'missing baryons' census in a very massive and fast-spinning hybrid galaxy Subject The topic of the resource galaxies: individual: UGC12591; galaxies: ISM; galaxies: spiral; Galaxy: formation; Galaxy: fundamental parameters Description An account of the resource We present Hubble Space Telescope ( HST ) observations of the nearby, massive, highly rotating hybrid galaxy UGC 12591, along with observations in the UV to FIR bands. HST data in V , I , and H bands is used to disentangle the structural components. Surface photometry shows a dominance of the bulge o v er the disc with an H-band B / D ratio of 69 per cent . The spectral energy distribution (SED) fitting reveals an extremely low global star formation rate (SFR) of 0 . 1-0 . 2 M yr-1 , exceptionally low for the galaxy's huge stellar mass of 1 . 6 0 11 M, implying a strong quenching of its SFR with a star formation efficiency of 3-5 per cent. For at least the past 10 8 yr, the galaxy has remained in a quiescent state as a sterile, 'red and dead' galaxy. UGC 12591 hosts a supermassive black hole (SMBH) of 6 . 18 0 8 M, which is possibly quiescent at present, i.e. we neither see large (1kpc) radio jets nor the SMBH contributing significantly to the mid-IR SED, ruling out strong radiative feedback of AGN. We obtained a detailed census of all observable baryons with a total mass of 6 . 46 0 11 M within the virial radius, amounting to a baryonic deficiency of 85 per cent relative to the cosmological mean. Only a small fraction of these baryons reside in a warm/hot circumgalactic X-ray halo, while the majority are still unobservable. We discussed various astrophysical scenarios to explain its unusual properties. Our work is a major step forward in understanding the assembly history of such e xtremely massiv e, isolated galaxies. 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. Creator An entity primarily responsible for making the resource Ray S.; Bagchi J.; Dhiwar S.; Pandge M.B.; Mirakhor M.; Walker S.A.; Mukherjee D. Source A related resource from which the described resource is derived Monthly Notices of the Royal Astronomical Society, Vol-517, No. 1, pp. 99-117. Publisher An entity responsible for making the resource available Oxford University Press Date A point or period of time associated with an event in the lifecycle of the resource 2022-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1093/mnras/stac2683" target="_blank" rel="noreferrer noopener">https://doi.org/10.1093/mnras/stac2683</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159212679&amp;doi=10.1093%2Fmnras%2Fstac2683&amp;partnerID=40&amp;md5=19f76244758b79ddfb8a522b8f2ae0ca" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85159212679&amp;doi=10.1093%2fmnras%2fstac2683&amp;partnerID=40&amp;md5=19f76244758b79ddfb8a522b8f2ae0ca</a> Rights Information about rights held in and over the resource All Open Access; Green Open Access Relation A related resource ISSN: 358711; CODEN: MNRAA Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Ray S., Dayanand Science College, Latur, 413531, India, Department of Physics and Electronics, CHRIST (Deemed to Be University), Hosur Road, Bengaluru, 560029, India; Bagchi J., Department of Physics and Electronics, CHRIST (Deemed to Be University), Hosur Road, Bengaluru, 560029, India; Dhiwar S., Dayanand Science College, Latur, 413531, India, Inter-University Centre for Astronomy and Astrophysics, Pune, 411007, India, Savitribai Phule Pune University, Pune, 411007, India; Pandge M.B., Dayanand Science College, Latur, 413531, India; Mirakhor M., The University of Alabama in Huntsville, OPB430, Huntsville, 35899, AL, United States; Walker S.A., The University of Alabama in Huntsville, OPB430, Huntsville, 35899, AL, United States; Mukherjee D., Inter-University Centre for Astronomy and Astrophysics, Pune, 411007, India