2021ApJS..252...18T

Query : 2021ApJS..252...18T

2021ApJS..252...18T - Astrophys. J., Suppl. Ser., 252, 18-18 (2021/February-0)

Shadows in the Dark: low-surface-brightness galaxies discovered in the Dark Energy Survey.

TANOGLIDIS D., DRLICA-WAGNER A., WEI K., LI T.S., SANCHEZ J., ZHANG Y., PETER A.H.G., FELDMEIER-KRAUSE A., PRAT J., CASEY K., PALMESE A., SANCHEZ C., DEROSE J., CONSELICE C., GAGNON L., ABBOTT T.M.C., AGUENA M., ALLAM S., AVILA S., BECHTOL K., BERTIN E., BHARGAVA S., BROOKS D., BURKE D.L., CARNERO ROSELL A., CARRASCO KIND M., CARRETERO J., CHANG C., COSTANZI M., DA COSTA L.N., DE VICENTE J., DESAI S., DIEHL H.T., DOEL P., EIFLER T.F., EVERETT S., EVRARD A.E., FLAUGHER B., FRIEMAN J., GARCIA-BELLIDO J., GERDES D.W., GRUENDL R.A., GSCHWEND J., GUTIERREZ G., HARTLEY W.G., HOLLOWOOD D.L., HUTERER D., JAMES D.J., KRAUSE E., KUEHN K., KUROPATKIN N., MAIA M.A.G., MARCH M., MARSHALL J.L., MENANTEAU F., MIQUEL R., OGANDO R.L.C., PAZ-CHINCHON F., ROMER A.K., ROODMAN A., SANCHEZ E., SCARPINE V., SERRANO S., SEVILLA-NOARBE I., SMITH M., SUCHYTA E., TARLE G., THOMAS D., TUCKER D.L., WALKER A.R. (The DES Collaboration)

Abstract (from CDS):

We present a catalog of 23,790 extended low-surface-brightness galaxies (LSBGs) identified in ∼5000°2 from the first three years of imaging data from the Dark Energy Survey (DES). Based on a single-component Sersic model fit, we define extended LSBGs as galaxies with g-band effective radii Reff(g)> 2′′ / . 5 and mean surface brightness {bar}µeff(g)> 24.2magarcsec–2. We find that the distribution of LSBGs is strongly bimodal in (g - r) versus (g - i) color space. We divide our sample into red (g - i >= 0.60) and blue (g - i < 0.60) galaxies and study the properties of the two populations. Redder LSBGs are more clustered than their blue counterparts and are correlated with the distribution of nearby (z < 0.10) bright galaxies. Red LSBGs constitute ∼33% of our LSBG sample, and ∼30 % of these are located within 1° of low-redshift galaxy groups and clusters (compared to ∼8% of the blue LSBGs). For nine of the most prominent galaxy groups and clusters, we calculate the physical properties of associated LSBGs assuming a redshift derived from the host system. In these systems, we identify 41 objects that can be classified as ultradiffuse galaxies, defined as LSBGs with projected physical effective radii Reff> 1.5kpc and central surface brightness µ0(g)> 24.0magarcsec–2. The wide-area sample of LSBGs in DES can be used to test the role of environment on models of LSBG formation and evolution.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Sky surveys - Low surface brightness galaxies

VizieR on-line data: <Available at CDS (J/ApJS/252/18): table2.dat tabled1.dat>

Nomenclature: Table D1: [TDW2021] NNNNN (Nos 0-23789).

Status at CDS : Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD. // All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 199 GiG 00 39 33.1568703672 +03 08 18.827340252   15.0       ~ 28 0
2 ACO 2870 ClG 01 07 42.57 -46 54 28.9           ~ 38 1
3 ACO 2911 ClG 01 26 12.9 -37 56 22           ~ 63 0
4 NGC 1200 EmG 03 03 54.481 -11 59 30.67   13   11.42   ~ 59 0
5 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
6 MCXC J0340.1-1835 ClG 03 40 11.9 -18 34 49           ~ 10 0
7 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0

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