Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Irwin, Mike J."'
Autor:
Okamoto, Sakurako, Ferguson, Annette M. N., Arimoto, Nobuo, Ogami, Itsuki, Zemaitis, Rokas, Chiba, Masashi, Irwin, Mike J., Jang, In Sung, Koda, Jin, Komiyama, Yutaka, Lee, Myung Gyoon, Lee, Jeong Hwan, Rich, Michael, Tanaka, Masayuki, Tanaka, Mikito
We present the discovery of NGC253-SNFC-dw1, a new satellite galaxy in the remote stellar halo of the Sculptor Group spiral, NGC 253. The system was revealed using deep resolved star photometry obtained as part of the Subaru Near-Field Cosmology Surv
Externí odkaz:
http://arxiv.org/abs/2403.16011
Autor:
Kumari, Nimisha, Smit, Renske, Leitherer, Claus, Witstok, Joris, Irwin, Mike J, Sirianni, Marco, Aloisi, Alessandra
Carbon spectral features are ubiquitous in the ultraviolet (UV) and far-infrared (FIR) spectra of galaxies in the epoch of reionization (EoR). We probe the ionized carbon content of a blue compact dwarf galaxy Pox 186 using the UV, optical, mid-infra
Externí odkaz:
http://arxiv.org/abs/2307.00059
We present a study of the structural properties and metallicity distribution of the nearby peculiar galaxy NGC3077. Using data from our survey of the M81 Group with the Hyper Suprime-Cam on the Subaru Telescope, we construct deep color-magnitude diag
Externí odkaz:
http://arxiv.org/abs/2306.04102
Autor:
Žemaitis, Rokas, Ferguson, Annette M. N., Okamoto, Sakurako, Cuillandre, Jean-Charles, Stone, Connor J., Arimoto, Nobuo, Irwin, Mike J.
We present the discovery of a giant tidal tail of stars associated with F8D1, the closest known example of an ultra-diffuse galaxy (UDG). F8D1 sits in a region of the sky heavily contaminated by Galactic cirrus and has been poorly studied since its d
Externí odkaz:
http://arxiv.org/abs/2209.09713
Autor:
Witten, Callum E. C., Aguado, David S., Sanders, Jason L., Belokurov, Vasily, Evans, N. Wyn, Koposov, Sergey E., Prieto, Carlos Allende, De Angeli, Francesca, Irwin, Mike J.
Gaia Data Release 3 has provided the astronomical community with the largest stellar spectroscopic survey to date ($>$ 220 million sources). The low resolution (R$\sim$50) blue photometer (BP) and red photometer (RP) spectra will allow for the estima
Externí odkaz:
http://arxiv.org/abs/2205.12271
Publikováno v:
A&A 634, A24 (2020)
The global Schmidt law of star formation provides a power-law relation between the surface densities of star-formation rate (SFR) and gas, and successfully explains plausible scenarios of galaxy formation and evolution. However, star formation being
Externí odkaz:
http://arxiv.org/abs/1911.10211
Autor:
Mackey, Dougal, Lewis, Geraint F., Brewer, Brendon J., Ferguson, Annette M. N., Veljanoski, Jovan, Huxor, Avon P., Collins, Michelle L. M., Côté, Patrick, Ibata, Rodrigo A., Irwin, Mike J., Martin, Nicolas, McConnachie, Alan W., Peñarrubia, Jorge, Tanvir, Nial, Wan, Zhen
Large galaxies grow through the accumulation of dwarf galaxies. In principle it is possible to trace this growth history using the properties of a galaxy's stellar halo. Previous investigations of the galaxy M31 (Andromeda) have shown that outside a
Externí odkaz:
http://arxiv.org/abs/1910.00808
Autor:
Okamoto, Sakurako, Arimoto, Nobuo, Ferguson, Annette M. N., Irwin, Mike J., Bernard, Edouard J., Utsumi, Yousuke
We use Hyper Suprime-Cam on the Subaru Telescope to investigate the structural and photometric properties of early-type dwarf galaxies and young stellar systems at the center of the M81 Group. We have mapped resolved stars to $\sim2$ magnitudes below
Externí odkaz:
http://arxiv.org/abs/1909.12997
We use integral field spectroscopic (IFS) observations from Gemini Multi-Object Spectrograph-North (GMOS-N) to analyse the ionised gas in the principal star-forming region in the blue compact dwarf galaxy SBS 1415+437. The IFS data enable us to map t
Externí odkaz:
http://arxiv.org/abs/1901.08600
We use integral field spectroscopic (IFS) observations from Gemini North Multi-Object Spectrograph (GMOS-N) of a group of four H II regions and the surrounding gas in the central region of the blue compact dwarf (BCD) galaxy NGC 4670. At spatial scal
Externí odkaz:
http://arxiv.org/abs/1802.04797