A Catalog of New M33 Star Clusters Based on Hubble Space Telescope WFPC2 Images, Park, Won-Kee,Lee, Myung Gyoon, The Astronomical Journal, 134, 2007-12-01 00:00:00, 2007AJ....134.2168P||A Catalog of Star Cluster Candidates in M33, Sarajedini, Ata,Mancone, Conor L., The Astronomical Journal, 134, 2007-08-01 00:00:00, 2007AJ....134..447S||Ages and Masses of Star Clusters in M33: a Multiwavelength Study, Moeller, Caitlin,Calzetti, Daniela, The Astronomical Journal, 163, 2022-01-01 00:00:00, 2022AJ....163...16M||Ages of M33 Star Clusters Based on the Hubble Space Telescope/WFPC2 Photometry, Park, Won-Kee,Park, Hong Soo,Lee, Myung Gyoon, The Astrophysical Journal, 700, 2009-07-01 00:00:00, 2009ApJ...700..103P||Dust Emission as a Function of Stellar Population Age in the Nearby Galaxy M33, Mallory, Kate,Calzetti, Daniela,Lin, Zesen, The Astrophysical Journal, 933, 2022-07-01 00:00:00, 2022ApJ...933..156M||Far-Ultraviolet Spectroscopy of Star-forming Regions in Nearby Galaxies: Stellar Populations and Abundance Indicators, Keel, William C.,Holberg, Jay B.,Treuthardt, Patrick M., The Astronomical Journal, 128, 2004-07-01 00:00:00, 2004AJ....128..211K||Kinematics of Star Clusters in M33: Distinct Populations, Chandar, Rupali,Bianchi, Luciana,Ford, Holland C., The Astrophysical Journal, 564, 2002-01-01 00:00:00, 2002ApJ...564..712C||On the importance of the few most massive stars: The ionizing cluster of <<>>NGC 588<>>, Jamet, L.,Pérez, E.,Cerviño, Miguel, Astronomy and Astrophysics, 426, 2004-11-01 00:00:00, 2004A&A...426..399J||Star clusters in M 33. IV. A new survey from deep HST images, Chandar, R.,Bianchi, L.,Ford, H. C., Astronomy and Astrophysics, 366, 2001-02-01 00:00:00, 2001A&A...366..498C||The Ofpe/WN9 Stars in M33, Bianchi, Luciana,Bohlin, Ralph,Massey, Philip, The Astrophysical Journal, 601, 2004-01-01 00:00:00, 2004ApJ...601..228B||Young stellar populations in M33: A comparative HST and GALEX stud...y, Tolea, Alin Catalin, Ph.D. Thesis, 0, 2009-01-01 00:00:00, 2009PhDT.........1T
Launched in 1990, the NASA/ESA Hubble Space Telescope remains the premier UV and visible light telescope in orbit. With well over 1.6 million observations from 10 different scientific instruments, the ESA Hubble Science Archive is a treasure trove of astronomical data to be exploited.
European Space Agency, 2007, The Ofpe/Wn Stars In M33: Understanding Wolf-Rayet Star Formation In Different Environments, 1.0, European Space Agency, https://doi.org/10.5270/esa-ysdkzsd