TY - JOUR

T1 - Galaxy And Mass Assembly

T2 - Galaxy Zoo spiral arms and star formation rates

AU - Porter-Temple, R

AU - Holwerda, B W

AU - Hopkins, A M

AU - Porter, L E

AU - Henry, C

AU - Geron, T

AU - Simmons, B

AU - Masters, K

AU - Kruk, S

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version R Porter-Temple, B W Holwerda, A M Hopkins, L E Porter, C Henry, T Geron, B Simmons, K Masters, S Kruk, Galaxy And Mass Assembly: Galaxy Zoo spiral arms and star formation rates, Monthly Notices of the Royal Astronomical Society, Volume 515, Issue 3, September 2022, Pages 3875–3882, https://doi.org/10.1093/mnras/stac1936 is available online at: https://academic.oup.com/mnras/article/515/3/3875/6658402

PY - 2022/9/30

Y1 - 2022/9/30

N2 - Understanding the effect spiral structure has on star formation properties of galaxies is important to complete our picture of spiral structure evolution. Previous studies have investigated connections between spiral arm properties and star formation, but the effect that the number of spiral arms has on this process is unclear. Here, we use the Galaxy And Mass Assembly (GAMA) survey paired with the citizen science visual classifications from the Galaxy Zoo project to explore galaxies’ spiral arm number and how it connects to the star formation process. We use the votes from the GAMA-Kilo Degree Survey Galaxy Zoo classification to investigate the link between spiral arm number and stellar mass, star formation rate, and specific star formation rate (sSFR). We find that galaxies with fewer spiral arms have lower stellar masses and higher sSFRs, while those with more spiral arms tend towards higher stellar masses and lower sSFRs, and conclude that galaxies are less efficient at forming stars if they have more spiral arms. We note how previous studies’ findings may indicate a cause for this connection in spiral arm strength or opacity.

AB - Understanding the effect spiral structure has on star formation properties of galaxies is important to complete our picture of spiral structure evolution. Previous studies have investigated connections between spiral arm properties and star formation, but the effect that the number of spiral arms has on this process is unclear. Here, we use the Galaxy And Mass Assembly (GAMA) survey paired with the citizen science visual classifications from the Galaxy Zoo project to explore galaxies’ spiral arm number and how it connects to the star formation process. We use the votes from the GAMA-Kilo Degree Survey Galaxy Zoo classification to investigate the link between spiral arm number and stellar mass, star formation rate, and specific star formation rate (sSFR). We find that galaxies with fewer spiral arms have lower stellar masses and higher sSFRs, while those with more spiral arms tend towards higher stellar masses and lower sSFRs, and conclude that galaxies are less efficient at forming stars if they have more spiral arms. We note how previous studies’ findings may indicate a cause for this connection in spiral arm strength or opacity.

KW - Space and Planetary Science

KW - Astronomy and Astrophysics

U2 - 10.1093/mnras/stac1936

DO - 10.1093/mnras/stac1936

M3 - Journal article

VL - 515

SP - 3875

EP - 3882

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -