J1649+2635

Date of the discovery: 11 December 2014

Short Description: Spiral Galaxies are not supposed to have large radio jets. But J1649+2635 does not seem to care much about this rule. It is the fourth spiral galaxy with large radio jets discovered. By using the catalog of classifications into spiral galaxies and ellipticals by volunteers, the researchers were able to find this galaxy. They first produced a “clean” sample of spirals, where 95% volunteers voted that they found a spiral and then cross-matched it with the NRAO VLA Sky Survey. And indeed J1649+2635 is a spiral DRAGN (Double-lobed Radio sources Associated with Galactic Nuclei). This demonstrates how the catalogs by volunteers can used for discoveries. The researchers hope to find more spiral DRAGN with Radio Galaxy Zoo in the future. See also: Speca.

Volunteer(s): Volunteers of the galaxy zoo project

Researchers in the discovery paper: Minnie Y. Mao, Frazer Owen, Ryan Duffin, Bill Keel, Mark Lacy, Emmanuel Momjian, Glenn Morrison, Tony Mroczkowski, Susan Neff, Ray P. Norris, Henrique Schmitt, Vicki Toy and Sylvain Veilleux

Link to paper in ADS: https://ui.adsabs.harvard.edu/abs/2015MNRAS.446.4176M/abstract

SIMBAD page: http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=2MASX+J16492402%2B2635024&submit=SIMBAD+search

Telescopes involved: Very Large Array

Figure 1 of the paper, showing the spiral galaxy on the left (SDSS) and the radio contours on the right overlayed over the SDSS image.

stu2302fig1

Other pages:

wikipedia: https://en.wikipedia.org/wiki/List_of_spiral_DRAGNs

Press Release: https://public.nrao.edu/news/strange-galaxy-perplexes-astronomers/

Project websites: galaxy zoo, radio galaxy zoo

Credit for the header image: Mao et al., NRAO/AUI/NSF, Sloan Digital Sky Survey

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