Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Palma, Tali"'
Autor:
Garro, Elisa R., Fernández-Trincado, José G., Minniti, Dante, Moya, Wisthon H., Palma, Tali, Beers, Timothy C., Placco, Vinicius M., Barbuy, Beatriz, Sneden, Chris, Alves-Brito, Alan, Dias, Bruno, Afşar, Melike, Frelijj, Heinz, Lane, Richard R.
Publikováno v:
A&A 669, A136 (2023)
The recent exquisite Gaia astrometric, photometric, and radial velocity (RV) measurements resulted in a substantial advancement for the determination of the orbits for old star clusters, including the oldest Milky Way globular clusters (MW GCs). The
Externí odkaz:
http://arxiv.org/abs/2212.02337
RR Tel is an interacting binary system in which a hot white dwarf (WD) accretes matter from a Mira-type variable star via gravitational capture of its stellar wind. This symbiotic nova shows intense Raman-scattered O VI 1032\r{A} and 1038\r{A} featur
Externí odkaz:
http://arxiv.org/abs/2105.09442
Autor:
Alonso-García, Javier, Smith, Leigh C., Catelan, Márcio, Minniti, Dante, Navarrete, Camila, Borissova, Jura, Carballo-Bello, Julio A., Ramos, Rodrigo Contreras, Fernández-Trincado, José G., Lopes, Carlos E. Ferreira, Gran, Felipe, Garro, Elisa R., Geisler, Doug, Guo, Zhen, Hempel, Maren, Kerins, Eamonn, Lucas, Philip W., Palma, Tali, Ramírez, Karla Peña, Alegría, Sebastián Ramírez, Saito, Roberto K.
Publikováno v:
A&A 651, A47 (2021)
The Galactic globular clusters (GGCs) located in the inner regions of the Milky Way suffer from high extinction that makes their observation challenging. The VVV survey provides a way to explore these GGCs in the near-infrared where extinction effect
Externí odkaz:
http://arxiv.org/abs/2105.05825
Autor:
Fernández-Trincado, José G., Beers, Timothy C., Minniti, Dante, Carigi, Leticia, Placco, Vinicius M., Chun, Sang-Hyun, Lane, Richard R., Geisler, Doug, Villanova, Sandro, Souza, Stefano O., Barbuy, Beatriz, Pérez-Villegas, Angeles, Chiappini, Cristina, Queiroz, Anna. B. A., Tang, Baitian, Alonso-García, Javier, Piatti, Andrés E., Palma, Tali, Alves-Brito, Alan, Bidin, Christian Moni, Roman-Lopes, Alexandre, Muñoz, Ricardo R., Singh, Harinder P., Kundu, Richa, Chaves-Velasquez, Leonardo, Romero-Colmenares, María, Longa-Peña, Penelope, Soto, Mario, Vieira, Katherine
The central (`bulge') region of the Milky Way is teeming with a significant fraction of mildly metal-deficient stars with atmospheres that are strongly enriched in cyanogen ($^{12}$C$^{14}$N). Some of these objects, which are also known as nitrogen-e
Externí odkaz:
http://arxiv.org/abs/2102.01706
Autor:
Fernández-Trincado, José G., Minniti, Dante, Beers, Timothy C., Villanova, Sandro, Geisler, Doug, Souza, Stefano O., Smith, Leigh C., Placco, Vinicius M., Vieira, Katherine, Pérez-Villegas, Angeles, Barbuy, Beatriz, Alves-Brito, Alan, Bidin, Christian Moni, Alonso-García, Javier, Tang, Baitian, Palma, Tali
Publikováno v:
A&A 643, A145 (2020)
The presence of nitrogen-enriched stars in globular clusters provides key evidence for multiple stellar populations (MPs), as has been demonstrated with globular cluster spectroscopic data towards the bulge, disk, and halo. In this work, we employ th
Externí odkaz:
http://arxiv.org/abs/2010.00020
Only four globular cluster planetary nebulae (GCPN) are known so far in the Milky Way. About 50 new globular clusters have been recently discovered towards the Galactic bulge. We present a search for planetary nebulae within 3 arcmin of the new globu
Externí odkaz:
http://arxiv.org/abs/1909.09109
Autor:
Palma, Tali, Minniti, Dante, Alonso-García, Javier, Crestani, Juliana, Netzel, Henryka, Clariá, Juan J., Saito, Roberto K., Dias, Bruno, Fernández-Trincado, José G., Kammers, Roberto, Geisler, Douglas, Gómez, Matías, Hempel, Maren, Pullen, Joyce
In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion da
Externí odkaz:
http://arxiv.org/abs/1905.11835
We present high-quality CCD photometry in the Washington system C and T1 passbands down to T1 ~ 19.5 mag in the fields of 10 Galactic open clusters (OCs) or candidates projected close to the Galactic plane, namely: ESO 313-SC03, BH 54, Ruprecht 87, E
Externí odkaz:
http://arxiv.org/abs/1903.06615
Autor:
Alonso-García, Javier, Saito, Roberto K., Hempel, Maren, Minniti, Dante, Pullen, Joyce, Catelan, Márcio, Ramos, Rodrigo Contreras, Cross, Nicholas J. G., Gonzalez, Oscar A., Lucas, Philip W., Palma, Tali, Valenti, Elena, Zoccali, Manuela
Publikováno v:
A&A 619, A4 (2018)
The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Via Lactea (VVV) ESO Public Survey has observed this zone at near-infrared wav
Externí odkaz:
http://arxiv.org/abs/1808.06139
Autor:
Chang, Seok-Jun, Lee, Hee-Won, Ahn, Sang-Hyeon, Lee, Hogyu, Angeloni, Rodolfo, Palma, Tali, Di Mille, Francesco
We investigate the escape of Ly$\beta$ from emission nebulae with a significant population of excited hydrogen atoms in the level $n=2$, rendering them optically thick in H$\alpha$. The transfer of Ly$\beta$ line photons in these optically thick regi
Externí odkaz:
http://arxiv.org/abs/1802.03892