Volume 525, January 2011
|Number of page(s)||11|
|Section||Interstellar and circumstellar matter|
|Published online||01 December 2010|
IPHAS extinction distances to planetary nebulae
Instituto de Astrofísica de Canarias (IAC), C/ vía Láctea s/n, 38200
La Laguna, Spain
2 Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ, UK
3 Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
4 Instituto de Astronomía, Universidad Nacional Autónoma de México, Apdo. Postal 877, 22800 Ensenada, B.C., Mexico
5 Isaac Newton Group of Telescopes, Ap. de Correos 321, 38700 Sta. Cruz de la Palma, Spain
6 Department of Physics, Macquarie University, NSW 2109, Australia
7 Institut für Physik, Karl-Franzens Universität Graz, Universitätsplatz 5, 8010 Graz, Austria
8 Astrophysics Group, Department of Physics, Bristol University, Tyndall Avenue, Bristol BS8 1TL, UK
9 Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, M13 9 PL Manchester, UK
10 Centre for Astrophysics Research, STRI, University of Hertfordshire, College Lane Campus, Hatfield AL10 9AB, UK
11 Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia
12 Departamento de Astrofísica, Universidad de La Laguna, 38205 La Laguna, Tenerife, Spain
13 Centro Astronómico Hispano Alemán, Calar Alto, C/Jesús Durbán Remón 2-2, 04004 Almeria, Spain
14 Centro de Estudios de Física del Cosmos de Aragón (CEFCA), C/General Pizarro 1-1, 44001 Teruel, Spain
Accepted: 3 July 2010
Aims. The determination of reliable distances to planetary nebulae (PNe) is a major difficulty in the study of this class of objects in the Galaxy. The availability of new photometric surveys such as IPHAS (the INT/WFC photometric Hα survey of the northern Galactic plane) covering large portions of the sky provide an opportunity to apply the so-called extinction method to determine the distances of a large number of objects.
Methods. The technique is applied to a sample of 137 PNe located between −5 and 5 degrees in Galactic latitude, and between 29.52 and 215.49 degrees in longitude. The characteristics of the distance-extinction method and the main sources of errors are carefully discussed.
Results. The data on the extinction of the PNe available in the literature, complemented by new observations, allow us to determine extinction distances for 70 PNe. A comparison with statistical distance scales from different authors is presented.
Key words: catalogs / planetary nebulae: general
© ESO, 2010
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