SIMBAD references

2022ApJ...932...44G - Astrophys. J., 932, 44-44 (2022/June-2)

Stellar Halos from the The Dragonfly Edge-on Galaxies Survey.

GILHULY C., MERRITT A., ABRAHAM R., DANIELI S., LOKHORST D., LIU Q., VAN DOKKUM P., CONROY C. and GRECO J.

Abstract (from CDS):

We present the primary results from the Dragonfly Edge-on Galaxies Survey, an exploration of the stellar halos of twelve nearby (d < 25 Mpc) edge-on disk galaxies with the Dragonfly Telephoto Array. The edge-on orientation of these galaxies allows their stellar halos to be explored with minimal obscuration by or confusion with the much brighter disk light. Galaxies in the sample span a range of stellar masses from 109.68 to 1010.88M. We confirm that the wide range of stellar halo mass fractions previously seen for Milky Way-mass galaxies is also found among less massive spiral galaxies. The scatter in stellar halo mass fraction is large, but we do find a significant positive correlation between stellar halo mass fraction and total stellar mass when the former is measured beyond five half-mass radii. Reasonably good agreement is found with predictions from cosmological hydrodynamical simulations, although observed stellar halo fractions appear to be somewhat lower than expected from these simulations.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxy structure - Galaxy stellar halos - Spiral galaxies - Galaxy photometry

Simbad objects: 44

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