Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Hidalgo, Sebastián L."'
Autor:
Bettinelli, Margherita, Hidalgo, Sebastián L., Cassisi, Santi, Aparicio, Antonio, Piotto, Giampaolo, Valdes, Frank, Walker, Alistair R.
We present the star formation history (SFH) of the Sculptor dwarf spheroidal galaxy based on deep g,r photometry taken with DECam at the Blanco telescope, focusing our analysis on the central region of the galaxy extended up to $\sim 3$ core radii. W
Externí odkaz:
http://arxiv.org/abs/1906.07042
Publikováno v:
Publications of the Astronomical Society of the Pacific, 2021 Oct 01. 133(1028), 1-13.
Externí odkaz:
https://www.jstor.org/stable/27206429
Autor:
Martínez-Vázquez, Clara E., Monelli, Matteo, Bernard, Edouard J., Gallart, Carme, Stetson, Peter B., Skillman, Evan D., Bono, Giuseppe, Cassisi, Santi, Fiorentino, Giuliana, McQuinn, Kristen B. W., Cole, Andrew A., McConnachie, Alan W., Martin, Nicolas F., Dolphin, Andrew E., Boylan-Kolchin, Michael, Aparicio, Antonio, Hidalgo, Sebastian L., Weisz, Daniel R.
We present a census of variable stars in six M31 dwarf spheroidal satellites observed with the Hubble Space Telescope. We detect 870 RR Lyrae (RRL) stars in the fields of And I (296), II (251), III (111), XV (117), XVI (8), XXVIII (87). We also detec
Externí odkaz:
http://arxiv.org/abs/1710.09038
Autor:
Hidalgo, Sebastian L
Publikováno v:
A&A 606, A115 (2017)
We present a new approach to study the mass-metallicity relation and its dependency on time. We used the star formation history (SFH) derived from color-magnitude diagram fitting techniques of a sample of Local Group (LG) dwarfs to obtain stellar mas
Externí odkaz:
http://arxiv.org/abs/1707.01840
The ongoing surveys of galaxies and those for the next generation of telescopes will demand the execution of high-CPU consuming machine codes for recovering detailed star formation histories (SFHs) and hence age-metallicity relationships (AMRs). We p
Externí odkaz:
http://arxiv.org/abs/1704.07189
We analyze in detail the spatial distribution and kinematic properties of two different stellar populations in Andromeda II (And II) dwarf spheroidal galaxy. We obtained their detailed surface density maps, together with their radial density profiles
Externí odkaz:
http://arxiv.org/abs/1611.08446
Autor:
Skillman, Evan D., Monelli, Matteo, Weisz, Daniel R., Hidalgo, Sebastian L., Aparicio, Antonio, Bernard, Edouard J., Boylan-Kolchin, Michael, Cassisi, Santi, Cole, Andrew A., Dolphin, Andrew E., Ferguson, Henry C., Gallart, Carme, Irwin, Mike J., Martin, Nicolas F., Martinez-Vazquez, Clara E., Mayer, Lucio, McConnachie, Alan W., McQuinn, Kristen B. W., Navarro, Julio F., Stetson, Peter B.
The Initial Star formation and Lifetimes of Andromeda Satellites (ISLAndS) project uses Hubble Space Telescope imaging to study a representative sample of six Andromeda dSph satellite companion galaxies. The main goal of the program is to determine w
Externí odkaz:
http://arxiv.org/abs/1606.01207
We present a novel analysis of the internal kinematics of the Fornax dwarf spheroidal galaxy. Our results are based on the largest sample of spectroscopic data for Fornax stars presently available ($> 2500$ stars), for which we have chemical and kine
Externí odkaz:
http://arxiv.org/abs/1605.09414
Autor:
Bettinelli, Margherita, Simioni, Matteo, Aparicio, Antonio, Hidalgo, Sebastian L., Cassisi, Santi, Walker, Alistair R., Piotto, Giampaolo, Valdes, Frank
We report the discovery of an optical Einstein Ring in the Sculptor constellation, IAC J010127-334319, in the vicinity of the Sculptor Dwarf Spheroidal Galaxy. It is an almost complete ring ($\sim 300^{\circ}$) with a diameter of $\sim 4.5\, {\rm arc
Externí odkaz:
http://arxiv.org/abs/1605.03938
Autor:
Aparicio, Antonio, Hidalgo, Sebastian L., Skillman, Evan, Cassisi, Santi, Mayer, Lucio, Navarro, Julio, Cole, Andrew, Gallart, Carme, Monelli, Matteo, Weisz, Daniel, Bernard, Edouard, Dolphin, Andrew, Stetson, Peter
The analysis of the early star formation history (SFH) of nearby galaxies, obtained from their resolved stellar populations is relevant as a test for cosmological models. However, the early time resolution of observationally derived SFHs is limited b
Externí odkaz:
http://arxiv.org/abs/1604.03307