TechnologyObserving FacilitiesEducation and OutreachAbout Haystack

Galactic Star Formation

Radio astronomers probe the interstellar medium (ISM) by observing molecular “signatures” that pro­vide information about the temperatures, densities, chemical compositions, and velocities of the gases surrounding stars. Star-forming regions are dense with molecular clouds that gravitationally coalesce into hot, young stellar newborns. Sci­entists at Haystack use single-dish radio astronomy to observe molecules such as methanol (CH3OH) in large regions con­taining numerous new stars.

VLBI techniques allow very high-resolution observations of emission from molecules such as silicon monoxide (SiO). These come in the form of masers—regions of gas and dust that send out laser-like beams of microwave radiation towards Earth. Masers can trace the velocities of outflows emanating from young protostars buried in opaque molecular clouds such as those in the Orion nebula.

Spectra of methanol masers detected with the Haystack 37-meter telescope. Their positions are identified on a carbon monoxide image of NGC 7538 [C.J. Davis, et al.]. The two spectra at each position are from two transitions of methanol. The line shapes indicate different physical conditions such as temperature and density. The 44 GHz line appears to be from maser emission while the 36 GHz line seems to switch from thermal to maser emission.

HOME  |  CONTACT  |  DIRECTIONS  |  WEATHER  |  INTRANET  |  SITEMAP  |  SEARCH
Astronomy

Science

Haystack Radio Telescope

Wideband VLBI

Radio Arrays (EDGES, MWA, SKA, MAPS, Deuterium)

Small Radio Telescope (SRT)

Publications

Geodesy

Science

Westford Radio Telescope

Mark 4 VLBI Correlator

VLBI Technique Development

International VLBI Service (IVS)

Publications

Atmospheric Sciences

Science

Millstone Hill Observatory

Madrigal

Array Systems

Open Source Projects

Space Science Resources

Publications

Technology

Radio Arrays (EDGES, MWA, SKA, MAPS, Deuterium)

Very Long Baseline Interferometry (VLBI)

Ionospheric Techniques

Open Source Projects

Observing Facilities

Haystack Radio Telescope

Westford Radio Telescope

Millstone Hill Radar

Deuterium Array

Atmospheric Optics Facility

Education and Outreach

Undergraduate Research

Research Experiences for Undergraduates (REU)

Research Experiences for Teachers (RET)

Pre-College Resources

Public Outreach Activities

About Haystack

Northeast Radio Observatory Corp. (NEROC)

Publications

News Archive

Glossary

Staff

Positions Available

Art at Haystack

History

Computing

Library

Networks

Safety Manual

Seminars

CloseSEARCH: