Zobrazeno 1 - 10
of 658
pro vyhledávání: '"Toloba, A."'
The Faint Satellite System of NGC 253: Insights into Low-Density Environments and No Satellite Plane
Autor:
Mutlu-Pakdil, Burçin, Sand, David J., Crnojević, Denija, Bennet, Paul, Jones, Michael G., Spekkens, Kristine, Karunakaran, Ananthan, Zaritsky, Dennis, Caldwell, Nelson, Fielder, Catherine E., Guhathakurta, Puragra, Seth, Anil C., Simon, Joshua D., Strader, Jay, Toloba, Elisa
We have conducted a systematic search around the Milky Way (MW) analog NGC 253 (D=3.5 Mpc), as a part of the Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) - a Magellan+Megacam survey to identify dwarfs and other substructures in resolve
Externí odkaz:
http://arxiv.org/abs/2401.14457
Autor:
Wang, Kaixiang, Peng, Eric W., Liu, Chengze, Mihos, J. Christopher, Côté, Patrick, Ferrarese, Laura, Taylor, Matthew A., Blakeslee, John P., Cuillandre, Jean-Charles, Duc, Pierre-Alain, Guhathakurta, Puragra, Gwyn, Stephen, Ko, Youkyung, Lançon, Ariane, Lim, Sungsoon, MacArthur, Lauren A., Puzia, Thomas, Roediger, Joel, Sales, Laura V., Sánchez-Janssen, Rubén, Spengler, Chelsea, Toloba, Elisa, Zhang, Hongxin, Zhu, Mingcheng
Publikováno v:
Nature 623 (2023) 296-300
Systematic studies have revealed hundreds of ultra-compact dwarf galaxies (UCDs) in the nearby Universe. With half-light radii $r_h$ of approximately 10-100 parsecs and stellar masses $M_*$ $\approx$ $10^6-10^8$ solar masses, UCDs are among the dense
Externí odkaz:
http://arxiv.org/abs/2311.05448
Autor:
Doppel, Jessica E., Sales, Laura V., Benavides, José A., Toloba, Elisa, Peng, Eric W., Nelson, Dylan, Navarro, Julio F.
The velocity dispersion of globular clusters (GCs) around ultra-diffuse galaxies (UDGs) in the Virgo cluster spans a wide range, including cases where GC kinematics suggest halos as massive as (or even more massive than) that of the Milky Way around
Externí odkaz:
http://arxiv.org/abs/2309.03260
Autor:
Toloba, Elisa, Sales, Laura V., Lim, Sungsoon, Peng, Eric W., Guhathakurta, Puragra, Roediger, Joel, Wang, Kaixiang, Mihos, J. Christopher, Cote, Patrick, Durrell, Patrick R., Ferrarese, Laura
We present Keck/DEIMOS spectroscopy of the first complete sample of ultra-diffuse galaxies (UDGs) in the Virgo cluster. We select all UDGs in Virgo that contain at least 10 globular cluster (GC) candidates and are more than $2.5\sigma$ outliers in sc
Externí odkaz:
http://arxiv.org/abs/2305.06369
Autor:
Hughes, A. K., Sand, D. J., Seth, A., Strader, J., Lidman, C., Voggel, K., Dumont, A., Crnojević, D., Mateo, M., Caldwell, N., Forbes, D. A., Pearson, S., Guhathakurta, P., Toloba, E.
We present new radial velocity measurements from the Magellan and the Anglo-Australian Telescopes for 174 previously known and 122 newly confirmed globular clusters (GCs) around NGC 5128, the nearest accessible massive early-type galaxy at D=3.8 Mpc.
Externí odkaz:
http://arxiv.org/abs/2208.08997
Autor:
Bellazzini, M., Magrini, L., Jones, M. G., Sand, D. J., Beccari, G., Cresci, G., Spekkens, K., Karunakaran, A., Adams, E. A. K., Zaritsky, D., Battaglia, G., Seth, A., Cannon, J. M., Fuson, J., Inoue, J. L., Mutlu-Pakdil, B., Guhathakurta, P., Munoz, R., Bennet, P., Crnojevic, D., Caldwell, N., Strader, J., Toloba, E.
We use panoramic optical spectroscopy obtained with MUSE@VLT to investigate the nature of five candidate extremely isolated low-mass star forming regions (Blue Candidates, BCs hereafter) toward the Virgo cluster of galaxies. Four of the five (BC1, BC
Externí odkaz:
http://arxiv.org/abs/2206.13971
Autor:
Jones, Michael G., Sand, David J., Bellazzini, Michele, Spekkens, Kristine, Karunakaran, Ananthan, Adams, Elizabeth A. K., Battaglia, Giuseppina, Beccari, Giacomo, Bennet, Paul, Cannon, John M., Cresci, Giovanni, Crnojevic, Denija, Caldwell, Nelson, Fuson, Jackson, Guhathakurta, Puragra, Haynes, Martha P., Inoue, John L., Magrini, Laura, Munoz, Ricardo R., Mutlu-Pakdil, Burcin, Seth, Anil, Strader, Jay, Toloba, Elisa, Zaritsky, Dennis
We discuss five blue stellar systems in the direction of the Virgo cluster, analogous to the enigmatic object SECCO 1 (AGC 226067). These objects were identified based on their optical and UV morphology and followed up with HI observations with the V
Externí odkaz:
http://arxiv.org/abs/2205.01695
Autor:
Ko, Youkyung, Peng, Eric W., Côté, Patrick, Ferrarese, Laura, Liu, Chengze, Longobardi, Alessia, Lançon, Ariane, Muñoz, Roberto P., Puzia, Thomas H., Alamo-Martínez, Karla A., Sales, Laura V., Ramos-Almendares, Felipe, Abadi, Mario G., Lee, Myung Gyoon, Hwang, Ho Seong, Caldwell, Nelson, Blakeslee, John P., Boselli, Alessandro, Cuillandre, Jean-Charles, Duc, Pierre-Alain, Eyheramendy, Susana, Guhathakurta, Puragra, Gwyn, Stephen, Jordán, Andrés, Lim, Sungsoon, Sánchez-Janssen, Rubén, Toloba, Elisa
We present a study of the stellar populations of globular clusters (GCs) in the Virgo Cluster core with a homogeneous spectroscopic catalog of 692 GCs within a major axis distance $R_{\rm maj} = $ 840 kpc from M87. We investigate radial and azimuthal
Externí odkaz:
http://arxiv.org/abs/2204.05318
Autor:
Mihos, J. Christopher, Durrell, Patrick R., Toloba, Elisa, Côté, Patrick, Ferrarese, Laura, Guhathakurta, Puragra, Lim, Sungsoon, Peng, Eric W., Sales, Laura V.
We use deep Hubble Space Telescope imaging to derive a distance to the Virgo Cluster ultradiffuse galaxy (UDG) VCC 615 using the tip of the red giant branch (TRGB) distance estimator. We detect 5,023 stars within the galaxy, down to a 50% completenes
Externí odkaz:
http://arxiv.org/abs/2111.01553
Autor:
Jones, Michael G., Sand, David J., Bellazzini, Michele, Spekkens, Kristine, Cannon, John M., Mutlu-Pakdil, Burçin, Karunakaran, Ananthan, Beccari, Giacomo, Magrini, Laura, Cresci, Giovanni, Inoue, John L., Fuson, Jackson, Adams, Elizabeth A. K., Battaglia, Giuseppina, Bennet, Paul, Crnojević, Denija, Caldwell, Nelson, Guhathakurta, Puragra, Haynes, Martha P., Muñoz, Ricardo R., Seth, Anil, Strader, Jay, Toloba, Elisa, Zaritsky, Dennis
The two sources AGC 226178 and NGVS 3543, an extremely faint, clumpy, blue stellar system and a low surface brightness dwarf spheroidal, are adjacent systems in the direction of the Virgo cluster. Both have been studied in detail previously, with it
Externí odkaz:
http://arxiv.org/abs/2110.14648