A new near-IR window of low extinction in the Galactic plane

Dante Minniti, Roberto K. Saito, Oscar A. Gonzalez, Javier Alonso-García, Marina Rejkuba, Rodolfo Barbá, Mike Irwin, Roberto Kammers, Phillip W. Lucas, Daniel Majaess, Elena Valenti

Resultado de la investigación: Article

  • 2 Citas

Resumen

Aims. The windows of low extinction in the Milky Way (MW) plane are rare but important because they enable us to place structural constraints on the opposite side of the Galaxy, which has hither to been done rarely. Methods. We use the near-infrared (near-IR) images of the VISTA Variables in the Vía Láctea (VVV) Survey to build extinction maps and to identify low extinction windows towards the Southern Galactic plane. Here we report the discovery of VVV WIN 1713-3939, a very interesting window with relatively uniform and low extinction conveniently placed very close to the Galactic plane. Results. The new window of roughly 30 arcmin diameter is located at Galactic coordinates (l, b) = (347.4, -0.4) deg. We analyse the VVV near-IR colour-magnitude diagrams in this window. The mean total near-IR extinction and reddening values measured for this window are AKs = 0.46 and E(J - Ks) = 0.95. The red clump giants within the window show a bimodal magnitude distribution in the Ks band, with peaks at Ks = 14.1 and 14.8 mag, corresponding to mean distances of D = 11.0 ± 2.4 and 14.8 ± 3.6 kpc, respectively. We discuss the origin of these red clump overdensities within the context of the MW disk structure.

IdiomaEnglish
Número de artículoA26
PublicaciónAstronomy and Astrophysics
Volumen616
DOI
EstadoPublished - 1 ago 2018

Huella dactilar

infrared windows
near infrared
extinction
clumps
color-magnitude diagram
diagram
galaxies

Keywords

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Citar esto

    Minniti, D., Saito, R. K., Gonzalez, O. A., Alonso-García, J., Rejkuba, M., Barbá, R., ... Valenti, E. (2018). A new near-IR window of low extinction in the Galactic plane. Astronomy and Astrophysics, 616, [A26]. https://doi.org/10.1051/0004-6361/201732099
    Minniti, Dante ; Saito, Roberto K. ; Gonzalez, Oscar A. ; Alonso-García, Javier ; Rejkuba, Marina ; Barbá, Rodolfo ; Irwin, Mike ; Kammers, Roberto ; Lucas, Phillip W. ; Majaess, Daniel ; Valenti, Elena. / A new near-IR window of low extinction in the Galactic plane. En: Astronomy and Astrophysics. 2018 ; Vol. 616.
    @article{b5659a4fbd264900aabc0d7f6a281065,
    title = "A new near-IR window of low extinction in the Galactic plane",
    abstract = "Aims. The windows of low extinction in the Milky Way (MW) plane are rare but important because they enable us to place structural constraints on the opposite side of the Galaxy, which has hither to been done rarely. Methods. We use the near-infrared (near-IR) images of the VISTA Variables in the V{\'i}a L{\'a}ctea (VVV) Survey to build extinction maps and to identify low extinction windows towards the Southern Galactic plane. Here we report the discovery of VVV WIN 1713-3939, a very interesting window with relatively uniform and low extinction conveniently placed very close to the Galactic plane. Results. The new window of roughly 30 arcmin diameter is located at Galactic coordinates (l, b) = (347.4, -0.4) deg. We analyse the VVV near-IR colour-magnitude diagrams in this window. The mean total near-IR extinction and reddening values measured for this window are AKs = 0.46 and E(J - Ks) = 0.95. The red clump giants within the window show a bimodal magnitude distribution in the Ks band, with peaks at Ks = 14.1 and 14.8 mag, corresponding to mean distances of D = 11.0 ± 2.4 and 14.8 ± 3.6 kpc, respectively. We discuss the origin of these red clump overdensities within the context of the MW disk structure.",
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    author = "Dante Minniti and Saito, {Roberto K.} and Gonzalez, {Oscar A.} and Javier Alonso-Garc{\'i}a and Marina Rejkuba and Rodolfo Barb{\'a} and Mike Irwin and Roberto Kammers and Lucas, {Phillip W.} and Daniel Majaess and Elena Valenti",
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    Minniti, D, Saito, RK, Gonzalez, OA, Alonso-García, J, Rejkuba, M, Barbá, R, Irwin, M, Kammers, R, Lucas, PW, Majaess, D & Valenti, E 2018, 'A new near-IR window of low extinction in the Galactic plane' Astronomy and Astrophysics, vol. 616, A26. https://doi.org/10.1051/0004-6361/201732099

    A new near-IR window of low extinction in the Galactic plane. / Minniti, Dante; Saito, Roberto K.; Gonzalez, Oscar A.; Alonso-García, Javier; Rejkuba, Marina; Barbá, Rodolfo; Irwin, Mike; Kammers, Roberto; Lucas, Phillip W.; Majaess, Daniel; Valenti, Elena.

    En: Astronomy and Astrophysics, Vol. 616, A26, 01.08.2018.

    Resultado de la investigación: Article

    TY - JOUR

    T1 - A new near-IR window of low extinction in the Galactic plane

    AU - Minniti, Dante

    AU - Saito, Roberto K.

    AU - Gonzalez, Oscar A.

    AU - Alonso-García, Javier

    AU - Rejkuba, Marina

    AU - Barbá, Rodolfo

    AU - Irwin, Mike

    AU - Kammers, Roberto

    AU - Lucas, Phillip W.

    AU - Majaess, Daniel

    AU - Valenti, Elena

    PY - 2018/8/1

    Y1 - 2018/8/1

    N2 - Aims. The windows of low extinction in the Milky Way (MW) plane are rare but important because they enable us to place structural constraints on the opposite side of the Galaxy, which has hither to been done rarely. Methods. We use the near-infrared (near-IR) images of the VISTA Variables in the Vía Láctea (VVV) Survey to build extinction maps and to identify low extinction windows towards the Southern Galactic plane. Here we report the discovery of VVV WIN 1713-3939, a very interesting window with relatively uniform and low extinction conveniently placed very close to the Galactic plane. Results. The new window of roughly 30 arcmin diameter is located at Galactic coordinates (l, b) = (347.4, -0.4) deg. We analyse the VVV near-IR colour-magnitude diagrams in this window. The mean total near-IR extinction and reddening values measured for this window are AKs = 0.46 and E(J - Ks) = 0.95. The red clump giants within the window show a bimodal magnitude distribution in the Ks band, with peaks at Ks = 14.1 and 14.8 mag, corresponding to mean distances of D = 11.0 ± 2.4 and 14.8 ± 3.6 kpc, respectively. We discuss the origin of these red clump overdensities within the context of the MW disk structure.

    AB - Aims. The windows of low extinction in the Milky Way (MW) plane are rare but important because they enable us to place structural constraints on the opposite side of the Galaxy, which has hither to been done rarely. Methods. We use the near-infrared (near-IR) images of the VISTA Variables in the Vía Láctea (VVV) Survey to build extinction maps and to identify low extinction windows towards the Southern Galactic plane. Here we report the discovery of VVV WIN 1713-3939, a very interesting window with relatively uniform and low extinction conveniently placed very close to the Galactic plane. Results. The new window of roughly 30 arcmin diameter is located at Galactic coordinates (l, b) = (347.4, -0.4) deg. We analyse the VVV near-IR colour-magnitude diagrams in this window. The mean total near-IR extinction and reddening values measured for this window are AKs = 0.46 and E(J - Ks) = 0.95. The red clump giants within the window show a bimodal magnitude distribution in the Ks band, with peaks at Ks = 14.1 and 14.8 mag, corresponding to mean distances of D = 11.0 ± 2.4 and 14.8 ± 3.6 kpc, respectively. We discuss the origin of these red clump overdensities within the context of the MW disk structure.

    KW - Dust, extinction

    KW - Galaxy: Disk

    KW - Galaxy: Structure

    KW - Surveys

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    U2 - 10.1051/0004-6361/201732099

    DO - 10.1051/0004-6361/201732099

    M3 - Article

    VL - 616

    JO - Astronomy and Astrophysics

    T2 - Astronomy and Astrophysics

    JF - Astronomy and Astrophysics

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    Minniti D, Saito RK, Gonzalez OA, Alonso-García J, Rejkuba M, Barbá R y otros. A new near-IR window of low extinction in the Galactic plane. Astronomy and Astrophysics. 2018 ago 1;616. A26. https://doi.org/10.1051/0004-6361/201732099