Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Jennings, Zachary"'
Stars that are both pulsating and eclipsing offer an important opportunity to better understand many of the physical phenomena that occur in stars, because it is possible to measure the pulsation frequencies of stars for which the masses and radii ar
Externí odkaz:
http://arxiv.org/abs/2311.02064
Autor:
Cunningham, Emily C., Deason, Alis J., Rockosi, Constance M., Guhathakurta, Puragra, Jennings, Zachary G., Kirby, Evan N., Toloba, Elisa, Barro, Guillermo
The Halo Assembly in Lambda-CDM: Observations in 7 Dimensions (HALO7D) dataset consists of Keck II/DEIMOS spectroscopy and Hubble Space Telescope-measured proper motions of Milky Way halo main sequence turnoff stars in the CANDELS fields. In this pap
Externí odkaz:
http://arxiv.org/abs/1809.04082
Autor:
Alabi, Adebusola B., Forbes, Duncan A., Romanowsky, Aaron J., Brodie, Jean P., Strader, Jay, Janz, Joachim, Pota, Vincenzo, Pastorello, Nicola, Usher, Christopher, Spitler, Lee R., Foster, Caroline, Jennings, Zachary G., Villaume, Alexa, Kartha, Sreeja
We study mass distributions within and beyond 5~effective radii ($R_{\rm e}$) in 23 early-type galaxies from the SLUGGS survey, using their globular cluster (GC) kinematic data. The data are obtained with Keck/DEIMOS spectrograph, and consist of line
Externí odkaz:
http://arxiv.org/abs/1605.06101
Autor:
Kartha, Sreeja S., Forbes, Duncan A., Alabi, Adebusola B., Brodie, Jean P., Romanowsky, Aaron J., Strader, Jay, Spitler, Lee R., Jennings, Zachary G., Roediger, Joel C.
We present an investigation of the globular cluster (GC) systems of NGC 3607 and NGC 3608 as part of the ongoing SLUGGS survey. We use wide-field imaging data from the Subaru telescope in the g, r, and i filters to analyse the radial density, colour
Externí odkaz:
http://arxiv.org/abs/1602.01838
Autor:
Romanowsky, Aaron J., Martinez-Delgado, D., Martin, Nicolas F., Morales, Gustavo, Jennings, Zachary G., GaBany, R. Jay, Brodie, Jean P., Grebel, Eva K., Schedler, Johannes, Sidonio, Michael
We report the discovery of NGC 253-dw2, a dwarf spheroidal (dSph) galaxy candidate undergoing tidal disruption around a nearby spiral galaxy, NGC 253 in the Sculptor group: the first such event identified beyond the Local Group. The dwarf was found u
Externí odkaz:
http://arxiv.org/abs/1512.03815
Autor:
Jennings, Zachary G., Romanowsky, Aaron J., Brodie, Jean P., Janz, Joachim, Norris, Mark A., Forbes, Duncan A., Martinez-Delgado, David, Fagioli, Martina, Penny, Samantha J.
Using Subaru/Suprime-Cam wide-field imaging and both Keck/ESI and LBT/MODS spectroscopy, we identify and characterize a compact star cluster, which we term NGC 3628-UCD1, embedded in a stellar stream around the spiral galaxy NGC 3628. The size and lu
Externí odkaz:
http://arxiv.org/abs/1509.04710
Autor:
Sandoval, Michael A., Vo, Richard P., Romanowsky, Aaron J., Strader, Jay, Choi, Jieun, Jennings, Zachary G., Conroy, Charlie, Brodie, Jean P., Foster, Caroline, Villaume, Alexa, Norris, Mark A., Janz, Joachim, Forbes, Duncan A.
Publikováno v:
The Astrophysical Journal Letters, Volume 808, Article L32, 2015
Motivated by the recent, serendipitous discovery of the densest known galaxy, M60-UCD1, we present two initial findings from a follow-up search, using the Sloan Digital Sky Survey, Subaru/Suprime-Cam and Hubble Space Telescope imaging, and SOuthern A
Externí odkaz:
http://arxiv.org/abs/1506.08828
Autor:
Lin, Dacheng, Irwin, Jimmy A., Wong, Ka-wah, Jennings, Zachary G., Homan, Jeroen, Romanowsky, Aaron J., Strader, Jay, Brodie, Jean P., Sivakoff, Gregory R., Remillard, Ronald A.
We have studied the X-ray luminosity function (XLF) of low-mass X-ray binaries (LMXBs) in the nearby lenticular galaxy NGC 3115, using the Megasecond Chandra X-Ray Visionary Project Observation. With a total exposure time of ~1.1 Ms, we constructed t
Externí odkaz:
http://arxiv.org/abs/1506.05447
Autor:
Lin, Dacheng, Irwin, Jimmy A., Wong, Ka-wah, Jennings, Zachary G., Homan, Jeroen, Romanowsky, Aaron J., Strader, Jay, Sivakoff, Gregory R., Brodie, Jean P., Remillard, Ronald A.
We have carried out an in-depth study of low-mass X-ray binaries (LMXBs) detected in the nearby lenticular galaxy NGC 3115, using the Megasecond Chandra X-Ray Visionary Project observation (total exposure time 1.1 Ms). In total we found 136 candidate
Externí odkaz:
http://arxiv.org/abs/1506.05448
Autor:
Pastorello, Nicola, Forbes, Duncan A., Usher, Christopher, Brodie, Jean P., Romanowsky, Aaron J., Strader, Jay, Spitler, Lee R., Alabi, Adebusola B., Foster, Caroline, Jennings, Zachary G., Kartha, Sreeja S., Pota, Vincenzo
The outer halo regions of early-type galaxies carry key information about their past accretion history. However, spectroscopically probing the stellar component at such galactocentric radii is still challenging. Using Keck/DEIMOS, we have been able t
Externí odkaz:
http://arxiv.org/abs/1505.04795