Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Germano R. Quast"'
Autor:
Michael Sterzik, Carlos A. O. Torres, C. Zamora, Xavier Haubois, Jesus M. Corral-Santana, Nuria Huélamo, G. Corvalán, Germano R. Quast, S. Zúñiga-Fernández, Claudio Melo, Johan Olofsson, P. Elliott, Amelia Bayo
Publikováno v:
Astronomy & Astrophysics. 645:A30
We seek to update the spectroscopy binary fraction of the SACY (Search for Associations Containing Young stars) sample taking in consideration all possible biases in our identification of binary candidates, such as activity and rotation. Using high-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f54ce2e5d1fa888370f320d9254c97f0
https://doi.org/10.1051/0004-6361/202037830
https://doi.org/10.1051/0004-6361/202037830
Autor:
Silvia H. P. Alencar, L. da Silva, S. L. A. Vieira, M. M. Guimarães, Carlos A. O. Torres, L. T. S. Mendes, Germano R. Quast, W. J. B. Corradi
Publikováno v:
The Astronomical Journal. 126:2971-2987
We present a new catalog of 108 Herbig Ae/Be candidate stars identified in the Pico dos Dias Survey, together with 19 previously known candidates and four objects selected from the IRAS Faint Source Catalog. These 131 stars were observed with low- an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::205c5f41c28c45eab3ea2953db4b7f9b
https://doi.org/10.1086/379553
https://doi.org/10.1086/379553
Publikováno v:
The Astronomical Journal. 120:1410-1425
Observing ROSAT sources in 20 x 25 deg centered at the high latitude active star ER Eri, we found evidences for a new young nearby association (~30Myr at~60pc), the Horologium Association (HorA), formed by at least 10 probable and 6 possible members,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::324ad4a902591ffca8a0e0013d1dc62a
https://doi.org/10.1086/301539
https://doi.org/10.1086/301539
Publikováno v:
Symposium - International Astronomical Union. 198:320-324
In the Pico dos Dias Survey (PDS), devised to search for young stellar objects, we found also K giants presenting moderate to strong Lithium lines associated with IRAS sources. But there are some gK with weak or absent Li lines too. There is a dichot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bc9826de9b696401e1c6018583a4798
https://doi.org/10.1017/s0074180900166768
https://doi.org/10.1017/s0074180900166768
Publikováno v:
The Astrophysical Journal Supplement Series. 119:239-253
We discuss the nature of the galaxies found in the Pico dos Dias Survey (PDS) for young stellar objects. The PDS galaxies were selected from the IRAS Point Source catalog. They have flux density of moderate or high quality at 12, 25, and 60 μm and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff9aad99e925d26319ec34bfc6f042d1
https://doi.org/10.1086/313162
https://doi.org/10.1086/313162
Autor:
C. Batalha, J. R. de la Reza, Francisco Jablonski, Ricardo P. Schiavon, Germano R. Quast, M. J. Sartori, M. A. O. Terra, Carlos A. O. Torres, P. C. R. Pereira
Publikováno v:
Astronomy and Astrophysics Supplement Series. 128:561-571
We present photometric light curves of T Tauri Stars (TTS) observed in the Southern hemisphere. Our list includes 26 TTS, half of which were discovered by the Pico dos Dias survey (PDS). The majority of the ob- served PDS stars are weak TTS and prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5a5aa9c725fdc246b632b535f334c42
https://doi.org/10.1051/aas:1998163
https://doi.org/10.1051/aas:1998163
Autor:
Mark Gieles, Germano R. Quast, Carolina Rabelo Vaz De Melo, Carlos A. O. Torres, G. M. De Silva, Michael Sterzik, Valentina D'Orazi
We explore the possible connection between the open cluster IC 2391 and the unbound Argus association identified by the SACY survey. In addition to common kinematics and ages between these two systems, here we explore their chemical abundance pattern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1faf61ae455d8f6daa48120de79547
http://arxiv.org/abs/1301.5967
http://arxiv.org/abs/1301.5967
Autor:
Germano R. Quast, Tania Pereira Dominici, Bernard Delabre, Vanessa Bawden de Paula Macanhan, Bruno Castilho, José Dias do Nascimento, W. J. B. Corradi, Gustavo F. Porto de Mello, Luiz Paulo R. Vaz, Jorge Melendez, Antonio Cesar de Oliveira, Gabriel A. P. Franco, Marcio Vital de Arruda, Clemens D. Gneiding
Publikováno v:
SPIE Proceedings.
At least during the last ten years, the Brazilian astronomical community has been asking for an echelle spectrograph for the 1.6 m telescope installed at Pico dos Dias Observatory (Brazopolis, MG, Brazil, OPD/MCTI/LNA). Among the scientific cases are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f53011099e948850ed64b779cd1d66d5
https://doi.org/10.1117/12.925674
https://doi.org/10.1117/12.925674
Autor:
Davide Gandolfi, A. Ruoppo, Carlos A. O. Torres, W. S. Corradi, Marcella Marconi, P. G. Prada Moroni, Silvia H. P. Alencar, R. de la Reza, Vincenzo Ripepi, J. D. R. Lepine, E. W. Guenter, Felice Cusano, Fernando J G Pinheiro, Jane Gregorio-Hetem, Matilde Fernández, Silvio Leccia, J. M. Alcalá, Werner W. Weiss, A. Baglin, S. Bernabei, Scilla Degl'Innocenti, C. Catala, T. Boehm, Franco Palla, Mário J. P. F. G. Monteiro, Germano R. Quast, C. Chavero, M. Deluil, F. Favata, Konstanze Zwintz
Publikováno v:
Astrophysics and Space Science
Astrophysics and Space Science, 2010, 328 (1-2), pp.119--122. ⟨10.1007/s10509-009-0189-1⟩
Astrophysics and Space Science, Springer Verlag, 2010, 328 (1-2), pp.119--122. ⟨10.1007/s10509-009-0189-1⟩
Astrophysics and Space Science, 2010, 328 (1-2), pp.119--122. ⟨10.1007/s10509-009-0189-1⟩
Astrophysics and Space Science, Springer Verlag, 2010, 328 (1-2), pp.119--122. ⟨10.1007/s10509-009-0189-1⟩
International audience; We present some preliminary results based on the CoRoT observations of the young distant cluster Dolidze 25. The light curve for the 28 stars observed by the satellite have been analyzed and the relevant periodogram presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7260f3f09a4c8c01490fa82a3cabf413
https://hal.science/hal-01438890
https://hal.science/hal-01438890
Autor:
N. R. Landin, Pierre Bergeron, D. Barrado y Navascues, Germano R. Quast, Hervé Bouy, Carlos A. O. Torres, Nuria Huélamo, Luiz Paulo R. Vaz, Michael Sterzik, G. Chauvin, Claudio Melo
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2009, 503, pp.873. ⟨10.1051/0004-6361/200811514⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2009, 503, pp.873. ⟨10.1051/0004-6361/200811514⟩
HIP96515A is a double-lined spectroscopic binary with a visual companion (HIP96515B) at 8.6 arcsec. It is included in the SACY catalog as a potential young star and classified as an eclipsing binary in the ASAS Catalog. We have analyzed spectroscopic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99108c322d6a5bd1fb1d24da0b4d2b06
https://hal.archives-ouvertes.fr/hal-00479927
https://hal.archives-ouvertes.fr/hal-00479927