Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Nitta, Atsuko"'
Autor:
Uzundag, Murat, De Gerónimo, Francisco C., Córsico, Alejandro H., Silvotti, Roberto, Bradley, Paul A., Montgomery, Michael H., Catelan, Márcio, Toloza, Odette, Bell, Keaton J., Kepler, S. O., Althaus, Leandro G., Kleinman, Scot J., Kilic, Mukremin, Mullally, Susan E., Gänsicke, Boris T., Bąkowska, Karolina, Barber, Sam, Nitta, Atsuko
G\,29$-$38 (TIC~422526868) is one of the brightest ($V=13.1$) and closest ($d = 17.51$\,pc) pulsating white dwarfs with a hydrogen-rich atmosphere (DAV/ZZ Ceti class). It was observed by the {\sl TESS} spacecraft in sectors 42 and 56. The atmosphere
Externí odkaz:
http://arxiv.org/abs/2309.04809
Autor:
Elms, Abbigail K., Tremblay, Pier-Emmanuel, Gänsicke, Boris T., Swan, Andrew, Melis, Carl, Bédard, Antoine, Manser, Christopher J., Munday, James, Hermes, J. J., Dennihy, Erik, Nitta, Atsuko, Zuckerman, Ben
Publikováno v:
MNRAS, 524, 4996 (2023)
Two recently discovered white dwarfs, WDJ041246.84$+$754942.26 and WDJ165335.21$-$100116.33, exhibit H$\alpha$ and H$\beta$ Balmer line emission similar to stars in the emerging DAHe class, yet intriguingly have not been found to have detectable magn
Externí odkaz:
http://arxiv.org/abs/2307.09186
Autor:
Vanderbosch, Zachary P., Hermes, J. J., Winget, Don E., Montgomery, Michael H., Bell, Keaton J., Nitta, Atsuko, Kepler, S. O.
We present a dedicated search for new pulsating helium-atmosphere (DBV) white dwarfs from the Sloan Digital Sky Survey using the McDonald 2.1m Otto Struve Telescope. In total we observed 55 DB and DBA white dwarfs with spectroscopic temperatures betw
Externí odkaz:
http://arxiv.org/abs/2201.09893
Autor:
Córsico, Alejandro H., Uzundag, Murat, Kepler, S. O., Silvotti, Roberto, Althaus, Leandro G., Koester, Detlev, Baran, Andrzej S., Bell, Keaton J., Bischoff-Kim, Agnès, Hermes, J. J., Kawaler, Steve D., Provencal, Judith L., Winget, Don E., Montgomery, Michael H., Bradley, Paul A., Kleinman, S. J., Nitta, Atsuko
Publikováno v:
A&A 659, A30 (2022)
The collection of high-quality photometric data by space telescopes is revolutionizing the area of white-dwarf asteroseismology. Among the different kinds of pulsating white dwarfs, there are those that have He-rich atmospheres, and they are called D
Externí odkaz:
http://arxiv.org/abs/2111.15551
Autor:
Lai, Samuel, Dennihy, Erik, Xu, Siyi, Nitta, Atsuko, Kleinman, Scot, Leggett, S. K., Bonsor, Amy, Hodgkin, Simon, Rebassa-Mansergas, Alberto, Rogers, Laura K.
Infrared excesses around white dwarf stars indicate the presence of various astrophysical objects of interest, including companions and debris disks. In this second paper of a series, we present follow-up observations of infrared excess candidates fr
Externí odkaz:
http://arxiv.org/abs/2107.01221
Autor:
Kepler, S. O., Pelisoli, Ingrid, Koester, Detlev, Ourique, Gustavo, Kleinman, Scot J., Romero, Alejandra Daniela, Nitta, Atsuko, Eisenstein, Daniel J., Costa, José Eduardo da Silveira, Külebi, Baybars, Jordan, Stefan, Dufour, Patrick, Giommi, Paolo, Rebassa-Mansergas, Alberto
We report the discovery of 9 089 new spectroscopically confirmed white dwarfs and subdwarfs in the Sloan Digital Sky Survey Data Release 10. We obtain Teff, log g and mass for hydrogen atmosphere white dwarf stars (DAs) and helium atmosphere white dw
Externí odkaz:
http://arxiv.org/abs/1411.4149
Autor:
Nitta, Atsuko
The success of asteroseismology lies in the correct identification of the normal modes of oscillation. The Whole Earth Telescope (WET) identified the normal modes of a helium white dwarf pulsator, GD358, by analyzing the period distribution of the pu
Externí odkaz:
http://hdl.handle.net/2152/29827
Autor:
Kepler, S. O., Pelisoli, Ingrid, Jordan, Stefan, Kleinman, Scot J., Kulebi, Baybars, Koester, Detlev, Peçanha, Viviane, Castanheira, Bárbara G., Nitta, Atsuko, Costa, José Eduardo da Silveira, Winget, Don Earl, Kanaan, Antonio, Fraga, Luciano
To obtain a better statistics on the occurrence of magnetism among white dwarfs, we searched the spectra of the hydrogen atmosphere white dwarf stars (DAs) in the Data Release 7 of the Sloan Digital Sky Survey (SDSS) for Zeeman splittings and estimat
Externí odkaz:
http://arxiv.org/abs/1211.5709
Autor:
Schiavon, Ricardo P., Adamson, Andy, Chiboucas, Kristin, Diaz, Ruben, Geballe, Tom, Gimeno, German, Gomez, Percy, Hibon, Pascale, Hirst, Paul, Jorgensen, Inger, Labrie, Kathleen, Leggett, Sandy, Lemoine-Busserolle, Marie, Levenson, Nancy, Mason, Rachel, McDermid, Richard, Miller, Bryan, Nitta, Atsuko, Pessev, Peter, Rodgers, Bernadette, Schirmer, Mischa, Trujillo, Chad, Turner, James
This paper is a response to a call for white papers solicited by Gemini Observatory and its Science and Technology Advisory Committee, to help define the science case and requirements for a new Gemini instrument, envisaged to consist of a single-obje
Externí odkaz:
http://arxiv.org/abs/1203.4229
Autor:
Benn, Chris R., Chrysostomou, Antonio, Storrie-Lombardi, Lisa J., Nitta, Atsuko, Stephens, Andrew W., Adamson, Andy, Kleinman, S. J., Miller, Bryan W., Labrie, Kathleen, Lemoine-Busserolle, Marie, Thomas-Osip, Joanna, Chené, André-Nicolas, Hirst, Paul, Rantakyrö, Fredrik, Serio, Andrew
Publikováno v:
Proceedings of SPIE; July 2024, Vol. 13098 Issue: 1 p130981L-130981L-8, 1178838p
