Počet záznamů: 1  

Crossmatching of high-proper motion L, T, and Y brown dwarfs with large photometric surveys

  1. 1.
    SYSNO ASEP0576248
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevCrossmatching of high-proper motion L, T, and Y brown dwarfs with large photometric surveys
    Tvůrce(i) Avdeeva, A.S. (RU)
    Karpov, Sergey (FZU-D) ORCID, RID
    Malkov, O.Yu. (RU)
    Celkový počet autorů3
    Číslo článku20220214
    Zdroj.dok.Open Astronomy. - : Walter de Gruyter
    Roč. 32, č. 1 (2023)
    Poč.str.8 s.
    Jazyk dok.eng - angličtina
    Země vyd.DE - Německo
    Klíč. slovacatalogs ; surveys ; crossmatching ; brown dwarfs
    Vědní obor RIVBN - Astronomie a nebeská mechanika, astrofyzika
    Obor OECDAstronomy (including astrophysics,space science)
    Způsob publikováníOpen access
    Institucionální podporaFZU-D - RVO:68378271
    UT WOS000933645800001
    EID SCOPUS85148769472
    DOI10.1515/astro-2022-0214
    AnotaceL, T, and Y brown dwarf (BD) exploration is a topical issue. First, the transition boundary between planets and BDs is not fully understood yet. Second, there is a phenomenon called the L/T-transition. The observed properties of cooler BDs differ significantly from the less cool ones, namely, colors of BDs shift much bluer and, simultaneously, dwarfs become brighter with a decrease in temperature. Models of this phenomenon are now being actively developed, for which reason BDs observed in a wide range of spectra are needed. Our goal is to refine the position of BDs in the parameter space of colors and magnitudes in order to effectively search for them in photometric surveys (without involving spectroscopic observations). For that reason, we crossmatched about 500 known L, T, and Y BDs with large photometric surveys. We paid special attention to the problem of identifying objects near the Sun because the crossmatching by default is made by searching for the closest object in a particular survey, which can be inappropriate concerning the high proper motions of our dwarfs. We have determined the color indices that can be used to search for these objects in large photometric surveys, and we have pointed out the color indices that are inappropriate for this purpose. We also made preliminary estimates of the radius matching to search for objects in the modern photometric surveys, given their proximity to the Sun and, consequently, their high proper motion.
    PracovištěFyzikální ústav
    KontaktKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Rok sběru2024
    Elektronická adresahttps://hdl.handle.net/11104/0345829
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.