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On the crucial cluster Andrews-Lindsay 1 and a 4% distance solution for its planetary nebula

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On the crucial cluster Andrews-Lindsay 1 and a 4% distance solution for its planetary nebula

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Título On the crucial cluster Andrews-Lindsay 1 and a 4% distance solution for its planetary nebula
Autor Majaess, Daniel J.
Carraro, Giovanni
Moni Bidin, Christian
Bonatto, Charles Jose
Turner, D. G.
Moyano, Maximiliano
Berdnikov, L.
Giorgi, Edgard Ervar
Abstract Andrews-Lindsay 1 is a pertinent open cluster because it may host the planetary nebula (PN) PHR 1315-6555, yet ambiguities linger concerning its fundamental parameters (>50% scatter). New multiband BVJHW1−4 photometry for cluster and field stars, in concert with observations of recently discovered classical Cepheids, were used to constrain the reddening and velocity-distance profiles along the sightline. That analysis yielded the following parameters for the cluster: E(J − H) = 0.24 ± 0.03, d = 10.0 ± 0.4 kpc (dJH = 9.9 ± 0.6 kpc, dBV = 10.1 ± 0.5 kpc), and log τ = 8.90 ± 0.15. The steep velocity-distance gradient along ∼ 305◦ indicates that two remote objects sharing spatial and kinematic parameters (i.e., PHR 1315-6555 and Andrews-Lindsay 1) are associated, thus confirming claims that the PN is a cluster member. The new distance for PHR 1315-6555 is among the most precise established yet for a Galactic PN (σ/d = 4%).
Contido em Astronomy and astrophysics. Les Ulis. Vol. 567 (July 2014), A1, 6 p.
Assunto Aglomerados estelares
Nebulosas
[en] Open clusters and associations: individual: Andrews-Lindsay 1 (ESO 96-SC04)
[en] Planetary nebulae: individual: PHR 1315-6555
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/126970
Arquivos Descrição Formato
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