TY - JOUR
T1 - WALLABY pilot survey
T2 - gas-rich galaxy scaling relations from marginally resolved kinematic models
AU - Deg, N.
AU - Arora, N.
AU - Spekkens, K.
AU - Halloran, R.
AU - Catinella, B.
AU - Jones, M. G.
AU - Courtois, H.
AU - Glazebrook, K.
AU - Bosma, A.
AU - Cortese, L.
AU - Dénes, H.
AU - Elagali, A.
AU - For, B. Q.
AU - Kamphuis, P.
AU - Koribalski, B. S.
AU - Lee-Waddell, K.
AU - Mancera Piña, P. E.
AU - Mould, J.
AU - Rhee, J.
AU - Shao, L.
AU - Staveley-Smith, L.
AU - Wang, J.
AU - Westmeier, T.
AU - Wong, O. I.
PY - 2024
Y1 - 2024
N2 - We present the first set of galaxy scaling relations derived from kinematic models of the Widefield Australian Square Kilometer Array Pathfinder (ASKAP) L-band Legacy All-sky Blind surveY (WALLABY) pilot phase observations. Combining the results of the first and second pilot data releases, there are 236 available kinematic models. We develop a framework for robustly measuring H i disk structural properties from these kinematic models, applicable to the full WALLABY survey. Utilizing this framework, we obtained the H i size, a measure of the rotational velocity, and angular momentum for 148 galaxies. These comprise the largest sample of galaxy properties from an untargeted, uniformly observed, and modeled H i survey to date. We study the neutral atomic hydrogen (H i) size-mass, size-velocity, mass-velocity, and angular momentum-mass scaling relations. We calculate the slope, intercept, and scatter for these scaling relations and find that they are similar to those obtained from other H i surveys. We also obtain stellar masses for 92 of the 148 robustly measured galaxies using multiband photometry through Dark Energy Sky Instrument Legacy Imaging Survey Data Release 10 images. We use a subset of 61 of these galaxies that have consistent optical and kinematic inclinations to examine the stellar and baryonic Tully-Fisher relations as well as the gas fraction-disk stability and gas fraction-baryonic mass relations. These measurements and relations demonstrate the unprecedented resource that WALLABY will represent for resolved galaxy scaling relations in H i.
AB - We present the first set of galaxy scaling relations derived from kinematic models of the Widefield Australian Square Kilometer Array Pathfinder (ASKAP) L-band Legacy All-sky Blind surveY (WALLABY) pilot phase observations. Combining the results of the first and second pilot data releases, there are 236 available kinematic models. We develop a framework for robustly measuring H i disk structural properties from these kinematic models, applicable to the full WALLABY survey. Utilizing this framework, we obtained the H i size, a measure of the rotational velocity, and angular momentum for 148 galaxies. These comprise the largest sample of galaxy properties from an untargeted, uniformly observed, and modeled H i survey to date. We study the neutral atomic hydrogen (H i) size-mass, size-velocity, mass-velocity, and angular momentum-mass scaling relations. We calculate the slope, intercept, and scatter for these scaling relations and find that they are similar to those obtained from other H i surveys. We also obtain stellar masses for 92 of the 148 robustly measured galaxies using multiband photometry through Dark Energy Sky Instrument Legacy Imaging Survey Data Release 10 images. We use a subset of 61 of these galaxies that have consistent optical and kinematic inclinations to examine the stellar and baryonic Tully-Fisher relations as well as the gas fraction-disk stability and gas fraction-baryonic mass relations. These measurements and relations demonstrate the unprecedented resource that WALLABY will represent for resolved galaxy scaling relations in H i.
UR - http://www.scopus.com/inward/record.url?scp=85210157475&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/ad84ba
DO - 10.3847/1538-4357/ad84ba
M3 - Article
AN - SCOPUS:85210157475
SN - 0004-637X
VL - 976
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 159
ER -