Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Hargis, Jonathan R."'
Autor:
Carlin, Jeffrey L., Sand, David J., Mutlu-Pakdil, Burcin, Crnojevic, Denija, Doliva-Dolinsky, Amandine, Garling, Christopher T., Peter, Annika H. G., Brodie, Jean P., Forbes, Duncan A., Hargis, Jonathan R., Romanowsky, Aaron J., Spekkens, Kristine, Strader, Jay, Willman, Beth
We present the first comprehensive census of the satellite population around a Large Magellanic Cloud (LMC) stellar-mass galaxy, as part of the Magellanic Analog Dwarf Companions and Stellar Halos (MADCASH) survey. We have surveyed NGC 2403 (D=3.0 Mp
Externí odkaz:
http://arxiv.org/abs/2409.17437
Autor:
Romanowsky, Aaron J., Larsen, Søren S., Villaume, Alexa, Carlin, Jeffrey L., Janz, Joachim, Sand, David J., Strader, Jay, Brodie, Jean P., Chakrabarti, Sukanya, Cheng, Chloe M., Crnojević, Denija, Forbes, Duncan A., Garling, Christopher T., Hargis, Jonathan R., Karunakaran, Ananthan, Martín-Navarro, Ignacio, Olsen, Knut A. G., Rider, Nicole, Salimkumar, Bitha, Santhanakrishnan, Vakini, Spekkens, Kristine, Tang, Yimeng, van Dokkum, Pieter G., Willman, Beth
The classical globular clusters found in all galaxy types have half-light radii of $r_{\rm h} \sim$ 2-4 pc, which have been tied to formation in the dense cores of giant molecular clouds. Some old star clusters have larger sizes, and it is unclear if
Externí odkaz:
http://arxiv.org/abs/2210.03220
Hubble Space Telescope Observations of Two Faint Dwarf Satellites of Nearby LMC Analogs from MADCASH
Autor:
Carlin, Jeffrey L., Mutlu-Pakdil, Burcin, Crnojevic, Denija, Garling, Christopher T., Karunakaran, Ananthan, Peter, Annika H. G., Tollerud, Erik, Forbes, Duncan A., Hargis, Jonathan R., Lim, Sungsoon, Romanowsky, Aaron J., Sand, David J., Spekkens, Kristine, Strader, Jay
We present a deep Hubble Space Telescope (HST) imaging study of two dwarf galaxies in the halos of Local Volume Large Magellanic Cloud (LMC) analogs. These dwarfs were discovered as part of our Subaru+Hyper Suprime-Cam MADCASH survey: MADCASH-1, whic
Externí odkaz:
http://arxiv.org/abs/2012.09174
Autor:
Hargis, Jonathan R., Albers, S., Crnojević, D., Sand, D. J., Weisz, D. R., Carlin, J. L., Spekkens, K., Willman, B., Peter, A. H. G., Grillmair, C. J., Dolphin, A. E.
A census of the satellite population around dwarf galaxy primary hosts in environments outside the Local Group is essential to understanding $\Lambda$CDM galaxy formation and evolution on the smallest scales. We present deep optical Hubble Space Tele
Externí odkaz:
http://arxiv.org/abs/1907.07185
Autor:
Carlin, Jeffrey L., Garling, Christopher T., Peter, Annika H. G., Crnojević, Denija, Forbes, Duncan A., Hargis, Jonathan R., Mutlu-Pakdil, Burçin, Pucha, Ragadeepika, Romanowsky, Aaron J., Sand, David J., Spekkens, Kristine, Strader, Jay, Willman, Beth
We report the discovery of a $>1^\circ$ ($\sim50$ kpc) long stellar tidal stream emanating from the dwarf galaxy DDO 44, a likely satellite of Local Volume galaxy NGC 2403 located $\sim70$ kpc in projection from its companion. NGC 2403 is a roughly L
Externí odkaz:
http://arxiv.org/abs/1906.08260
Publikováno v:
Phys. Rev. Lett. 121, 211302 (2018)
A critical challenge to the cold dark matter (CDM) paradigm is that there are fewer satellites observed around the Milky Way than found in simulations of dark matter substructure. We show that there is a match between the observed satellite counts co
Externí odkaz:
http://arxiv.org/abs/1711.06267
Autor:
Hargis, Jonathan R., Kimmig, B., Willman, B., Caldwell, N., Walker, M. G., Strader, J., Sand, D. J., Grillmair, C. J., Yoon, J. H.
The Eastern Banded Structure (EBS) and Hydra~I halo overdensity are very nearby (d $\sim$ 10 kpc) objects discovered in SDSS data. Previous studies of the region have shown that EBS and Hydra I are spatially coincident, cold structures at the same di
Externí odkaz:
http://arxiv.org/abs/1509.06391
We present a study of the spatial and color distributions of four early-type galaxies and their globular cluster (GC) systems observed as part of our ongoing wide-field imaging survey. We use $BVR$ KPNO-4m+MOSAIC imaging data to characterize the gala
Externí odkaz:
http://arxiv.org/abs/1409.6306
We predict the spatial distribution and number of Milky Way dwarf galaxies to be discovered in the DES and LSST surveys, by completeness correcting the observed SDSS dwarf population. We apply most massive in the past, earliest forming, and earliest
Externí odkaz:
http://arxiv.org/abs/1407.4470
This paper presents results from wide-field imaging of the globular cluster (GC) systems of five intermediate-luminosity (M_V ~-21 to -22) early-type galaxies. The aim is to accurately quantify the global properties of the GC systems by measuring the
Externí odkaz:
http://arxiv.org/abs/1210.3810