Millimetre Observations of Maser-Emitting Planetary Nebulae
Lucero Uscanga,
José R. Rizzo,
Miguel Santander-García,
José F. Gómez,
Luis F. Miranda,
Olga Suárez,
Panayotis Boumis,
Mónica I. Rodríguez,
Gerardo Ramos-Larios,
Roldán A. Cala
Affiliations
Lucero Uscanga
Departamento de Astronomía, Universidad de Guanajuato, A.P. 144, Guanajuato 36000, Guanajuato, Mexico
José R. Rizzo
Centro de Astrobiología (INTA-CSIC), Ctra. M-108, km. 4, Torrejón de Ardoz, E-28850 Madrid, Spain
Miguel Santander-García
Observatorio Astronómico Nacional (OAN-IGN), Alfonso XII, 3, E-28014 Madrid, Spain
José F. Gómez
Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía s/n, E-18008 Granada, Spain
Luis F. Miranda
Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía s/n, E-18008 Granada, Spain
Olga Suárez
Laboratoire Lagrange, Observatoire de la Côte d’Azur, Université Côte d’Azur, CNRS, Bd de l’Observatoire, CEDEX 4, 06304 Nice, France
Panayotis Boumis
Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, 15236 Athens, Greece
Mónica I. Rodríguez
Instituto de Radioastronomía Milimétrica (IRAM), Av. Divina Pastora 7, E-18012 Granada, Spain
Gerardo Ramos-Larios
Instituto de Astronomía y Meteorología, Centro Universitario de Ciencias Exactas e Ingenierías (CUCEI), Universidad de Guadalajara, Av. Vallarta 2602, Arcos Vallarta, Guadalajara 44130, Jalisco, Mexico
Roldán A. Cala
Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía s/n, E-18008 Granada, Spain
Observations in the millimetre bands of maser-emitting planetary nebulae (PNe) are crucial to study their circumstellar molecular gas at the beginning of the PN phase. Maser-emitting PNe are in the earliest phases of PN formation; therefore, these sources are key objects to study the molecular content during the early evolution of PNe. These circumstellar envelopes are active sites for the formation of molecules. We present preliminary results of millimetre observations with the IRAM 30 m telescope towards one PN (IRAS 17393−2727) of a sample of five maser-emitting PNe, where we detect 12CO and 13CO lines in both J=1→0 and J=2→1 transitions.
