A Caltech Library Service

Near-infrared images of star forming regions containing masers. Las Campanas observations of 31 southern sources

Testi, L. and Felli, M. and Persi, P. and Roth, M. (1998) Near-infrared images of star forming regions containing masers. Las Campanas observations of 31 southern sources. Astronomy and Astrophysics Supplement Series, 129 (3). pp. 495-504. ISSN 0365-0138. doi:10.1051/aas:1998403.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


We present sensitive high resolution near infrared (NIR) broad band (J, H, and K) observations of a sample of 31 Star Forming Regions (SFRs) which contain H_2O and OH maser sources. The observations are aimed at the detection and characterization of Young Stellar Objects (YSOs) which may be the source of excitation of the maser emission. In spite of the large number of sources detected in the regions, using positional coincidence and NIR colours we are able to reliably identify K-band sources related to the masing gas in a large fraction of the observed regions. The NIR infrared sources selected from close positional coincidence with the maser show strong NIR excesses and most probably represent the YSOs still embedded in their parental cocoon where the maser emission occurs.

Item Type:Article
Related URLs:
URLURL TypeDescription
Testi, L.0000-0003-1859-3070
Additional Information:© European Southern Observatory (ESO), 1998. Received July 17; accepted October 24, 1997. We thank R. Forster for providing unpublished VLA data. Support from C.N.R.-N.A.T.O. Advanced Fellowship program and from NASA's Origins of Solar Systems program (through grant NAGW-4030) is gratefully acknowledged.
Funding AgencyGrant Number
Consiglio Nazionale delle Ricerche (CNR)UNSPECIFIED
North Atlantic Treaty Organization (NATO)UNSPECIFIED
Subject Keywords:masers / star formation / circumstellar matter / infrared: ISM: continuum; stars
Issue or Number:3
Record Number:CaltechAUTHORS:20180507-141343950
Persistent URL:
Official Citation:Near-infrared images of star forming regions containing masers - Las Campanas observations of 31 southern sources L. Testi, M. Felli, P. Persi and M. Roth Astron. Astrophys. Suppl. Ser., 129 3 (1998) 495-504 DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86250
Deposited By: George Porter
Deposited On:08 May 2018 15:10
Last Modified:15 Nov 2021 20:36

Repository Staff Only: item control page