English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report a new compact galaxy, SDSS J122958.84+000138.0 (SDSS J1229+0001),which has unique morphological and stellar population properties that are rarein observations of the nearby universe. SDSS J1229+0001 has an $r$-bandabsolute magnitude (M$_{r}$) and half-light radius (R$_{h}$) of $-$17.75 magand 520 pc, respectively. Located in a fairly low density environment,morphologically it is akin to a typical early-type galaxy as it has a smoothappearance and red colour. But, interestingly, it possesses centrallyconcentrated star forming activity with a significant amount of dust. Wepresent an analysis of structural and stellar population properties usingarchival images and VLT/FORS2 spectroscopy. Analysis of UKIDSS H-band imageshows that the observed light distribution is better fitted with two componentsS\'ersic function with inner and outer component effective radii 190 and 330pc, respectively. Whereas, overall half-light radius measured in H-band is muchsmaller compared to optical, i.e 290 pc. We prepared a Spectral EnergyDistribution (SED) from optical to FIR and interpret it to derivestar-formation rate, dust mass and stellar mass. We find that the SDSSJ1229+0001 has dust mass M$_{dust}$ = 5.1 $\times$ 10$^{5}$ M$_{\sun}$ with adust to stellar mass ratio log(M$_{dust}$/M$_{*}$) = $-$3.5. While the observedstellar population properties are -- to some extent -- similar to that of atypical S0 galaxy, a unified view from stellar population and structuralproperties may suggests that SDSS J1229+0001 is a {\it smoking gun} example ofa compact early-type galaxy in formation.

SDSS J122958.84+000138.0: A Compact, Optically red galaxy