Detalles de publicación
PP 010052
IPHAS extinction distances to Planetary Nebulae
(1) IAC, (2) Imperial College London, (3) University College London, (4) UNAM, (5) INT, (6) Macquarie University, (7) Karl-Franzens Universität, (8) Bristol University, (9) University of Manchester, (10) University of Hertfordshire, (11) Anglo-Australian Observatory, (12) ULL, (13) Centro Astronómico Hispano Alemán, (14) CEFCA.
Aims. The determination of reliable distances to Planetary Nebulae (PNe) is one of the major
limitations in the study of this class of objects in the Galaxy. The availability of new photometric
surveys such as IPHAS covering large portions of the sky gives us the opportunity to apply the
“extinction method” to determine 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.
limitations in the study of this class of objects in the Galaxy. The availability of new photometric
surveys such as IPHAS covering large portions of the sky gives us the opportunity to apply the
“extinction method” to determine 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.