Zobrazeno 1 - 10
of 248
pro vyhledávání: '"Martínez–Delgado, David"'
Autor:
Miro-Carretero, Juan, Martinez-Delgado, David, Gomez-Flechoso, Maria A., Cooper, Andrew, Akhlaghi, Mohammad, Donatiello, Giuseppe, Kuijken, Konrad, Makarov, Dmitry, Laine, Seppo, Roca-Fabrega, Santi
Stellar tidal streams are a key tracer of galaxy evolution and have the potential to provide an indirect means for tracing dark matter. For the Local Group, many diffuse substructures have been identified and their link to galaxy evolution has been t
Externí odkaz:
http://arxiv.org/abs/2407.20483
Autor:
Sakowska, Joanna D., Noël, Noelia E. D., Ruiz-Lara, Tomás, Gallart, Carme, Massana, Pol, Nidever, David L., Cassisi, Santi, Correa-Amaro, Patricio, Choi, Yumi, Besla, Gurtina, Erkal, Denis, Martínez-Delgado, David, Monelli, Matteo, Olsen, Knut A. G., Stringfellow, Guy S.
We obtain a quantitative star formation history (SFH) of a shell-like structure ('shell') located in the northeastern part of the Small Magellanic Cloud (SMC). We use the Survey of the MAgellanic Stellar History (SMASH) to derive colour-magnitude dia
Externí odkaz:
http://arxiv.org/abs/2407.13876
Autor:
Martinez-Delgado, David, Stein, Michael, Pawlowski, Marcel S., Makarov, Dmitry, Makarova, Lidia, Donatiello, Giuseppe, Lang, Dustin
The problem of missing satellites still remains one of the well-known problems of the Lambda-CDM cosmological theory. Despite significant progress in cosmological modeling achieved in recent years, the search for new dwarf galaxies-satellites of near
Externí odkaz:
http://arxiv.org/abs/2405.03769
Stellar streams have proven to be powerful tools for measuring the Milky Way's gravitational potential and hence its dark matter halo. In the coming years, Vera Rubin, Euclid, ARRAKIHS, and NGRST will uncover a plethora of streams around external gal
Externí odkaz:
http://arxiv.org/abs/2402.13314
Autor:
Laine, Seppo, Martınez-Delgado, David, Webb, Kristi A., Akhlaghi, Mohammad, Baena-Gallé, Roberto, Paudel, Sanjaya, Stein, Michael, Erkal, Denis
We have investigated the properties (e.g., age, metallicity) of the stellar populations of a ring-like tidal stellar stream (or streams) around the edge-on galaxy SPRC047 (z = 0.031) using spectral energy distribution (SED) fits to integrated broad-b
Externí odkaz:
http://arxiv.org/abs/2312.05358
Autor:
Montes, Mireia, Annibali, Francesca, Bellazzini, Michele, Borlaff, Alejandro S., Brough, Sarah, Buitrago, Fernando, Chamba, Nushkia, Collins, Chris, Dell'Antonio, Ian, Escala, Ivanna, Gonzalez, Anthony H., Holwerda, Benne, Kaviraj, Sugata, Knapen, Johan, Koekemoer, Anton, Laine, Seppo, Marcum, Pamela, Martin, Garreth, Martinez-Delgado, David, Mihos, Chris, Ricotti, Massimo, Trujillo, Ignacio, Watkins, Aaron E.
One of the last remaining frontiers in optical/near-infrared observational astronomy is the low surface brightness regime (LSB, V-band surface brightness, $\mu_V>$ 27 AB mag/arcsec$^2$). These are the structures at very low stellar surface densities,
Externí odkaz:
http://arxiv.org/abs/2306.09414
Autor:
Collins, Michelle L. M., Karim, Noushin, Martinez-Delgado, David, Monelli, Matteo, Tollerud, Erik J., Donatiello, Giuseppe, Navabi, Mahdieh, Charles, Emily, Boschin, Walter
Pisces VII/Triangulum III (Pisc~VII) was discovered in the DESI Legacy Imaging Survey and was shown to be a Local Group dwarf galaxy with follow-up imaging from the 4-m Telescopio Nazionale Galileo. However, this imaging was unable to reach the horiz
Externí odkaz:
http://arxiv.org/abs/2305.13966
Autor:
Besla, Gurtina, Martínez-Delgado, David, van der Marel, Roeland P., Beletsky, Yuri, Seibert, Mark, Schlafly, Edward F., Grebel, Eva K., Neyer, Fabian
We present deep optical images of the Large and Small Magellanic Clouds (LMC and SMC) using a low cost telephoto lens with a wide field of view to explore stellar substructure in the outskirts of the stellar disk of the LMC (< 10 degrees from the LMC
Externí odkaz:
http://hdl.handle.net/10150/621396
http://arizona.openrepository.com/arizona/handle/10150/621396
http://arizona.openrepository.com/arizona/handle/10150/621396
Autor:
Janssens, Steven R., Romanowsky, Aaron J., Abraham, Roberto, Brodie, Jean P., Couch, Warrick J., Forbes, Duncan A., Laine, Seppo, Martínez-Delgado, David, van Dokkum, Pieter G.
We investigate the isolated, quiescent ultra-diffuse galaxy (UDG) DGSAT I and its globular cluster (GC) system using two orbits of Hubble Space Telescope Advanced Camera for Surveys imaging in the F606W and F814W filters. This is the first study of G
Externí odkaz:
http://arxiv.org/abs/2209.09910
Autor:
Miro-Carretero, Juan, Martinez-Delgado, David, Farras-Aloy, Silvia, Gomez-Flechoso, Maria A., Cooper, Andrew, Roca-Fabrega, Santi, Kuijken, Konrad, Akhlaghi, Mohammad, Donatiello, Giussepe
Publikováno v:
A&A 669, L13 (2023)
Context. Stellar tidal streams are the result of tidal interactions between a central galaxy and lower mass systems like satellite galaxies or globular clusters. For the Local Group, many diffuse substructures have been identified and their link to t
Externí odkaz:
http://arxiv.org/abs/2209.08636