We present a detailed visual morphology catalogue for the Euclid Quick Release 1 (Q1). Our catalogue includes galaxy features such as bars, spiral arms, and ongoing mergers, for the 378 000 bright (IE < 20.5) or extended (area ≥700 pixels) galaxies in Q1. The catalogue was created by finetuning the Zoobot galaxy foundation models on annotations from an intensive one-month campaign by Galaxy Zoo volunteers. Our measurements are fully automated, and hence fully scaleable. This catalogue is the first 0.4% of the approximately 100 million galaxies where Euclid will ultimately resolve detailed morphology.

Walmsley, M., Quilley, L., Masters, K.L., Kruk, S., Remmelgas, K.A., Popp, J.J., et al. (2026). Euclid Quick Data Release (Q1): IX. First visual morphology catalogue. ASTRONOMY & ASTROPHYSICS, 711, 1-19 [10.1051/0004-6361/202555140].

Euclid Quick Data Release (Q1): IX. First visual morphology catalogue

M. Baldi;A. Cimatti;F. Marulli;M. Moresco;L. Moscardini;N. Mauri;R. B. Metcalf;F. Cogato;G. F. Lesci;S. Quai;
2026

Abstract

We present a detailed visual morphology catalogue for the Euclid Quick Release 1 (Q1). Our catalogue includes galaxy features such as bars, spiral arms, and ongoing mergers, for the 378 000 bright (IE < 20.5) or extended (area ≥700 pixels) galaxies in Q1. The catalogue was created by finetuning the Zoobot galaxy foundation models on annotations from an intensive one-month campaign by Galaxy Zoo volunteers. Our measurements are fully automated, and hence fully scaleable. This catalogue is the first 0.4% of the approximately 100 million galaxies where Euclid will ultimately resolve detailed morphology.
2026
Walmsley, M., Quilley, L., Masters, K.L., Kruk, S., Remmelgas, K.A., Popp, J.J., et al. (2026). Euclid Quick Data Release (Q1): IX. First visual morphology catalogue. ASTRONOMY & ASTROPHYSICS, 711, 1-19 [10.1051/0004-6361/202555140].
Walmsley, M.; Quilley, L.; Masters, K. L.; Kruk, S.; Remmelgas, K. A.; Popp, J. J.; Romelli, E.; O'Ryan, D.; Dickinson, H. J.; Lintott, C. J.; Serjean...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1078535
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