SIMBAD references

2015MNRAS.448.2344J - Mon. Not. R. Astron. Soc., 448, 2344-2361 (2015/April-2)

MALT-45: a 7 mm survey of the southern Galaxy - I. Techniques and spectral line data.

JORDAN C.H., WALSH A.J., LOWE V., VORONKOV M.A., ELLINGSEN S.P., BREEN S.L., PURCELL C.R., BARNES P.J., BURTON M.G., CUNNINGHAM M.R., HILL T., JACKSON J.M., LONGMORE S.N., PERETTO N. and URQUHART J.S.

Abstract (from CDS):

We present the first results from the MALT-45 (Millimetre Astronomer's Legacy Team-45 GHz) Galactic Plane survey. We have observed 5 square degrees (l = 330°-335°, b = ±0 _.^○5) for spectral lines in the 7 mm band (42-44 and 48-49 GHz), including CS (1-0), class I CH3OH masers in the 7(0,7)-6(1,6) A+ transition and SiO (1-0) v = 0, 1, 2, 3. MALT-45 is the first unbiased, large-scale, sensitive spectral line survey in this frequency range. In this paper, we present data from the survey as well as a few intriguing results; rigorous analyses of these science cases are reserved for future publications. Across the survey region, we detected 77 class I CH3OH masers, of which 58 are new detections, along with many sites of thermal and maser SiO emission and thermal CS. We found that 35 class I CH3OH masers were associated with the published locations of class II CH3OH, H2O and OH masers but 42 have no known masers within 60 arcsec. We compared the MALT-45 CS with NH3 (1,1) to reveal regions of CS depletion and high opacity, as well as evolved star-forming regions with a high ratio of CS to NH3. All SiO masers are new detections, and appear to be associated with evolved stars from the Spitzer Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE). Generally, within SiO regions of multiple vibrational modes, the intensity decreases as v = 1, 2, 3, but there are a few exceptions where v = 2 is stronger than v = 1.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): masers - surveys - stars: formation - ISM: molecules - Galaxy: structure - radio lines: ISM

VizieR on-line data: <Available at CDS (J/MNRAS/448/2344): table2.dat table3.dat>

Nomenclature: Tables 2-3: [JWL2015] GLLL.ll+BB.bb N=77+47.

Status at CDS : Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD.

Simbad objects: 9

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2015MNRAS.448.2344J and select 'bookmark this link' or equivalent in the popup menu


2021.04.20-13:40:14

© Université de Strasbourg/CNRS

    • Contact