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

4 Citas (Scopus)

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.

Idioma originalEnglish
Número de artículoA26
PublicaciónAstronomy and Astrophysics
Volumen616
DOI
EstadoPublished - 7 ago 2018

Huella dactilar

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

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.
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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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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, 07.08.2018.

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 - 2018/8/7

Y1 - 2018/8/7

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

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - A26

ER -

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 7;616. A26. https://doi.org/10.1051/0004-6361/201732099