Navegação Ciências Exatas e da Terra por Assunto "Binaries: spectroscopic"

Resultados 1-7 de 7

    • A cautionary tale : marvels brown dwarf candidate reveals itself to be a very long period, highly eccentric spectroscopic stellar binary 

      Mack, C. E.; Ge, Jian; Deshpande, Rohit; Wisniewski, J.P.; Stassun, Keivan G.; Gaudi, B. S.; Fleming, S.W.; Mahadevan, Suvrath; De Lee, Nathan M.; Eastman, Jason; Ghezzi, Luan; González Hernández, Jonay I.; Femenía Castellá, B.; Ferreira, Letícia D.; Mello, Gustavo Frederico Porto de; Crepp, Justin R.; Mata Sánchez, Daniel; Agol, Eric; Beatty, Thomas G.; Bizyaev, D.; Brewington, Howard J.; Cargile, Phillip A.; Costa, Luiz N. da; Esposito, Massimiliano; Ebelke, Garrett L.; Hebb, Leslie; Jiang, Peng; Kane, Stephen R.; Lee, Brian L.; Maia, Marcio Antonio Geimba; Malanushenko, E.; Malanushenko, V.; Oravetz, Daniel J.; Paegert, Martin; Pan, K.; Allende Prieto, Carlos; Pepper, J.; Rebolo, Rafael; Roy, Arpita; Santiago, Basilio Xavier; Schneider, D.P.; Simmons, Audrey E.; Siverd, Robert J.; Snedden, S.A.; Tofflemire, Benjamin M. (2013) [Artigo de periódico]
      We report the discovery of a highly eccentric, double-lined spectroscopic binary star system (TYC 3010-1494-1), comprising two solar-type stars that we had initially identified as a single star with a brown dwarf companion. ...

    • Eclipsing binary science via the merging of transit and doppler exoplanet survey data - a case study with the marvels pilot project and SuperWASP 

      Fleming, S.W.; Maxted, Pierre F.L.; Hebb, Leslie; Stassun, Keivan G.; Ge, Jian; Cargile, Phillip A.; Ghezzi, Luan; De Lee, Nathan M.; Wisniewski, J.P.; Gary, Bruce L.; Mello, Gustavo Frederico Porto de; Ferreira, Letícia D.; Zhao, Bo; Anderson, D.R.; Wan, Xiaoke; Hellier, C.; Guo, Pengcheng; West, R.G.; Mahadevan, Suvrath; Pollacco, Don; Lee, B.L.; Collier Cameron, A.; Van Eyken, Julian C.; Skillen, Ian; Crepp, Justin R.; Nguyen, D.C.; Kane, Stephen R.; Paegert, Martin; Costa, Luiz N. da; Maia, Marcio Antonio Geimba; Santiago, Basilio Xavier (2011) [Artigo de periódico]
      Exoplanet transit and Doppler surveys discover many binary stars during their operation that can be used to conduct a variety of ancillary science. Specifically, eclipsing binary stars can be used to study the stellar ...

    • Marvels-1 : a face-on double-lined binary star masquerading as a resonant planetary system and consideration of rare false positives in radial velocity planet searches 

      Wright, Jason Thomas; Roy, Arpita; Mahadevan, Suvrath; Wang, Sharon Xuesong; Ford, Eric B.; Payne, Matthew John; Lee, Brian L.; Wang, Ji; Crepp, Justin R.; Gaudi, B. S.; Eastman, Jason; Pepper, J.; Ge, Jian; Fleming, S.W.; Ghezzi, Luan; González Hernández, Jonay I.; Cargile, Phillip A.; Stassun, Keivan G.; Wisniewski, J.P.; Ferreira, Letícia D.; Mello, Gustavo Frederico Porto de; Maia, Marcio Antonio Geimba; Costa, Luiz N. da; Ogando, Ricardo L.C.; Santiago, Basilio Xavier; Schneider, D.P.; Hearty, Frederick R. (2013) [Artigo de periódico]
      We have analyzed new and previously published radial velocity (RV) observations of MARVELS-1, known to have an ostensibly substellar companion in a ∼6 day orbit. We find significant (∼100ms-ˡ) residuals to the best-fit ...

    • Spectroscopic binaries in the Solar Twin Planet Search program : from substellar–mass to M dwarf companions 

      Santos, Leonardo Augusto Gonçalves dos; Meléndez, Jorge; Bedell, Megan; Bean, Jacob L.; Spina, Lorenzo; Alves-Brito, Alan; Dreizler, Stefan; Ramírez, Iván; Asplund, Martin (2017) [Artigo de periódico]
      Previous studies on the rotation of Sun-like stars revealed that the rotational rates of young stars converge towards a well-defined evolution that follows a power-law decay. It seems, however, that some binary stars do ...

    • The mass ratio and initial mass functions in spectroscopic binaries 

      Ducati, Jorge Ricardo; Penteado, Eduardo Monfardini; Turcati, Rodrigo (2011) [Artigo de periódico]
      Context. Spectroscopic binaries are important in studies of binary star-formation, since original information linked to the forming stars, such as the mass ratio, can be kept in the system and observationally retrieved. ...

    • Very low mass stellar and substellar companions to solar-like stars from MARVELS. II. A short-period companios orbiting an F star with evidence of a stellar tertiary and significant mutual inclination 

      Fleming, S.W.; Jian Ge; Barnes, Rory; Beatty, Thomas G.; Crepp, Justin R.; De Lee, Nathan M.; Esposito, Massimiliano; Femenía Castellá, B.; Ferreira, Letícia D.; Gary, Bruce L.; Gaudi, B. S.; Ghezzi, Luan; González Hernández, Jonay I.; Hebb, Leslie; Jiang, Peng; Lee, Brian L.; Nelson, Ben; Mello, Gustavo Frederico Porto de; Shappee, Benjamin J.; Stassun, Keivan G.; Thompson, Todd; Tofflemire, Benjamin M.; Wisniewski, J.P.; Wood-Vasey, W.M.; Agol, Eric; Allende Prieto, Carlos; Bizyaev, D.; Brewington, Howard J.; Cargile, Phillip A.; Coban, Louis; Costello, Korena S.; Costa, Luiz N. da; Good, Melanie L.; Hua, Nelson; Kane, Stephen R.; Lander, Gary R.; Liu, Jian; Ma, Bo; Mahadevan, Suvrath; Maia, Marcio Antonio Geimba; Malanushenko, E.; Malanushenko, V.; Muna, Demitri; Nguyen, D.C.; Oravetz, Daniel J.; Paegert, Martin; Pan, K.; Pepper, J.; Rebolo, Rafael; Roebuck, Eric J.; Santiago, Basilio Xavier; Schneider, D.P.; Bradley, Alaina C. Shelden; Simmons, Audrey E.; Sivarani, Thirupathi; Snedden, S.A.; Vincent, Chelsea L. M.; Wan, Xiaoke; Wang, Ji; Weaver, Benjamin A.; Weaver, Gwendolyn M.; Zhao, Bo (2012) [Artigo de periódico]
      We report the discovery via radial velocity (RV) measurements of a short-period (P = 2.430420±0.000006 days) companion to the F-type main-sequence star TYC 2930-00872-1. A long-term trend in the RV data also suggests the ...

    • Very low mass stellar and substellar companions to solar-like stars from MARVELS. IV. A candidate bronw dwarf or low-mass stellar companion HIP 67526 

      Jiang, Peng; Ge, Jian; Cargile, Phillip A.; Crepp, Justin R.; De Lee, Nathan M.; Mello, Gustavo Frederico Porto de; Esposito, Massimiliano; Ferreira, Letícia D.; Femenía Castellá, B.; Fleming, S.W.; Gaudi, B. S.; Ghezzi, Luan; González Hernández, Jonay I.; Hebb, Leslie; Lee, Brian L.; Ma, Bo; Stassun, Keivan G.; Wang, Ji; Wisniewski, J.P.; Agol, Eric; Bizyaev, D.; Brewington, Howard J.; Chang, Liang; Costa, Luiz N. da; Eastman, Jason; Ebelke, Garrett L.; Gary, Bruce L.; Kane, Stephen R.; Li, Rui; Liu, Jian; Mahadevan, Suvrath; Maia, Marcio Antonio Geimba; Malanushenko, V.; Malanushenko, E.; Muna, Demitri; Nguyen, D.C.; Ogando, Ricardo L.C.; Oravetz, Audrey; Oravetz, Daniel J.; Pan, K.; Pepper, J.; Paegert, Martin; Allende Prieto, Carlos; Rebolo, Rafael; Santiago, Basilio Xavier; Schneider, D.P.; Bradley, Alaina C. Shelden; Sivarani, Thirupathi; Snedden, S.A.; Van Eyken, Julian C.; Wan, Xiaoke; Weaver, Benjamin A.; Zhao, Bo (2013) [Artigo de periódico]
      We report the discovery of a candidate brown dwarf (BD) or a very low mass stellar companion (MARVELS-5b) to the star HIP 67526 from the Multi-object Apache point observatory Radial Velocity Exoplanet Large-area Survey ...