Sandqvist objects

This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details. (August 2025) (Learn how and when to remove this template message)

|

In 1976, as an adjunct to work measuring microwave signals of formaldehyde, Aage Sandqvist and Lukas Lindroos produced a catalogue[1] of 42 "dark" nebulæ in the southern celestial hemisphere. They reported microwave observations on 27 of these objects, noting mean temperatures of 1.9 to 2.2 K and a variety of other microwave parameters. In 1977 Sandqvist added a further 95 entries to the catalogue.[2]

## Objects

* Sandqvist 1 – Minimal data – only detected
* Sandqvist 2 – Minimal data – only detected
* Sandqvist 3 – Minimal data – only detected
* Sandqvist 4 – Microwave data
* Sandqvist 5 – Microwave data
* Sandqvist 6 – Microwave data
* Sandqvist 7 – Microwave data
* Sandqvist 8 – Microwave data
* Sandqvist 9 – Microwave data
* Sandqvist 10 – Microwave data
* Sandqvist 11 – Microwave data
* Sandqvist 12 – Microwave data
* Sandqvist 13 – Microwave data
* Sandqvist 14 – Microwave data
* Sandqvist 15 – Minimal data – only detected
* Sandqvist 16 – Microwave data
* Sandqvist 17 – "Not observed."
* Sandqvist 18 – Microwave data
* Sandqvist 19 – Microwave data
* Sandqvist 20 – Microwave data
* Sandqvist 21 – Minimal data – only detected
* Sandqvist 22 – Microwave data
* Sandqvist 23 – Microwave data
* Sandqvist 24 – Minimal data – only detected
* Sandqvist 25 – Microwave data
* Sandqvist 26 – Minimal data – only detected
* Sandqvist 27 – "Not observed."
* Sandqvist 28 – Microwave data
* Sandqvist 29 – Microwave data
* Sandqvist 30 – Microwave data
* Sandqvist 31 – Minimal data – only detected
* Sandqvist 32 – "Not observed."
* Sandqvist 33 – Microwave data
* Sandqvist 34 – Microwave data
* Sandqvist 35 – Microwave data
* Sandqvist 36 – Microwave data
* Sandqvist 37 – Microwave data
* Sandqvist 38 – Minimal data – only detected
* Sandqvist 39 – Microwave data
* Sandqvist 40 – Microwave data
* Sandqvist 41 – Microwave data
* Sandqvist 42 – Microwave data

The positions and velocities of these objects were relates to larger scale galactic structures. Several of these objects are reported to have similar motions, implying an extended structure below current detection limits.

The second tranche of the collection re-started the numbering at 101 up to 195: Sandqvist 101, Sandqvist 102, etc.

None of these objects received further substantial attention (in this publication) (2).

## References

1. ↑ Sandqvist, Aa; Lindroos, K.P. (1976). "Interstellar Formaldehyde in Southern Dark Dust Clouds". Astronomy and Astrophysics 53: 179–189. Bibcode: 1976A&A....53..179S. https://articles.adsabs.harvard.edu/pdf/1976A&A....53..179S;. Retrieved 2025-08-09.
2. ↑ Sandqvist, Aa (1977). "More Southern Dark Dust Clouds". Astronomy and Astrophysics 57: 467–470. Bibcode: 1977A&A....57..467S. https://articles.adsabs.harvard.edu/pdf/1977A&A....57..467S;.

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Sandqvist objects. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:Sandqvist_objects&oldid=3943762"