2020ApJ...902...39K

Query : 2020ApJ...902...39K

2020ApJ...902...39K - Astrophys. J., 902, 39-39 (2020/October-2)

Systematically Measuring ultradiffuse Galaxies in H I: results from the pilot survey.

KARUNAKARAN A., SPEKKENS K., ZARITSKY D., DONNERSTEIN R.L., KADOWAKI J. and DEY A.

Abstract (from CDS):

We present neutral hydrogen (H I) observations using the Robert C. Byrd Green Bank Telescope (GBT) of 70 optically detected UDG candidates in the Coma region from the Systematically Measuring Ultra-Diffuse Galaxies survey (SMUDGes). We detect H I in 18 targets, confirming nine to be gas-rich UDGs and the remainder to be foreground dwarfs. None of our H I-detected UDGs are Coma Cluster members and all but one are in low-density environments. The H I-detected UDGs are bluer and have more irregular morphologies than the redder, smoother candidates not detected in H I, with the combination of optical color and morphology being a better predictor of gas richness than either parameter alone. There is little visual difference between the gas-rich UDGs and the foreground dwarfs in the SMUDGes imaging, and distances are needed to distinguish between them. We find that the gas richnesses of our H I-confirmed UDGs and those from other samples scale with their effective radii in two stellar mass bins, possibly providing clues to their formation. We attempt to place our UDGs on the baryonic Tully-Fisher relation (BTFR) using optical ellipticities and turbulence-corrected H I line widths to estimate rotation velocities, but the potential systematics associated with fitting smooth Sersic profiles to clumpy, low-inclination disks of low surface brightness precludes a meaningful analysis of potential BTFR offsets. These observations are a pilot for a large campaign now under way at the GBT to use the H I properties of gas-rich UDGs to quantitatively constrain how these galaxies form and evolve.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): H I line emission - Low surface brightness galaxies - Galaxy evolution - Galaxy formation - Dwarf galaxies

VizieR on-line data: <Available at CDS (J/ApJ/902/39): table1.dat table2.dat table3.dat table4.dat table5.dat>

Nomenclature: Table 1: SMDG JHHMMSSs+DDMMSS N=70.

Simbad objects: 71

goto Full paper

goto View the references in ADS

Number of rows : 71
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 AGC 219369 LSB 11 03 51.4 +28 41 16           ~ 11 0
2 MATLAS-1247 LSB 12 17 37.7 +28 35 20           ~ 8 0
3 SMDG J1217442+332045 LSB 12 17 44.19 +33 20 44.6           ~ 4 0
4 MATLAS-1251 LSB 12 17 44.9 +28 17 26           ~ 7 0
5 SDSS J122018.78+280131.3 LSB 12 20 18.788 +28 01 31.32           ~ 13 0
6 MATLAS-1338 LSB 12 20 21.0 +29 08 34           ~ 8 0
7 SMDG J1221086+292920 LSB 12 21 08.6 +29 29 20           ~ 2 0
8 SMDG J1221235+303643 LSB 12 21 23.4045 +30 36 43.768           ~ 5 0
9 MATLAS-1360 LSB 12 21 40.0 +28 43 47           ~ 6 0
10 SMDG J1221497+283111 LSB 12 21 49.7168 +28 31 10.539           ~ 6 0
11 SMDG J1221577+281436 LSB 12 21 58.4 +28 14 34           ~ 16 0
12 SMDG J1223448+295949 LSB 12 23 44.6484 +29 59 51.829           ~ 7 0
13 SMDG J1223451+283550 LSB 12 23 45.0 +28 35 50           ~ 3 0
14 SMDG J1224082+280544 LSB 12 24 08.1409 +28 05 44.785           ~ 7 0
15 SMDG J1224166+291506 LSB 12 24 16.5491 +29 15 07.114           ~ 5 0
16 SMDG J1225185+270859 LSB 12 25 18.47 +27 08 58.8           ~ 5 0
17 SMDG J1225265+311646 LSB 12 25 26.4697 +31 16 46.183           ~ 4 0
18 SMDG J1226040+241802 LSB 12 26 04.0 +24 18 03           ~ 5 0
19 SMDG J1226306+220532 LSB 12 26 31.0 +22 05 32           ~ 4 0
20 SMDG J1230359+273311 LSB 12 30 36.0 +27 33 12           ~ 5 0
21 SMDG J1231070+253508 LSB 12 31 07.0 +25 35 08           ~ 2 0
22 SDSS J123132.82+232918.0 LSB 12 31 32.82648 +23 29 18.0168           ~ 10 0
23 SMDG J1231418+264433 LSB 12 31 42.0 +26 43 33           ~ 2 0
24 SMDG J1232244+274043 LSB 12 32 24.0 +27 40 43           ~ 2 0
25 SMDG J1233516+234545 LSB 12 33 52.0 +23 45 45           ~ 2 0
26 SMDG J1234503+293313 LSB 12 34 50.0 +29 33 14           ~ 4 0
27 SMDG J1235065+263342 LSB 12 34 58.0 +26 33 42           ~ 2 0
28 SMDG J1237277+333048 LSB 12 37 27.5720 +33 30 50.578           ~ 5 0
29 SMDG J1239050+323016 LSB 12 39 05.1 +32 30 17           ~ 8 0
30 SMDG J1239267+274736 LSB 12 39 26.6016 +27 47 36.802           ~ 5 0
31 SMDG J1239503+244949 LSB 12 39 50.1965 +24 49 50.060           ~ 6 0
32 SDSS J124001.86+261916.2 LSB 12 40 01.864 +26 19 16.24           ~ 33 0
33 SMDG J1240119+251447 LSB 12 40 11.9019 +25 14 47.208           ~ 5 0
34 SMDG J1240490+254406 LSB 12 40 49.0 +25 44 02           ~ 2 0
35 SMDG J1241097+221223 LSB 12 41 10.0 +22 12 23           ~ 2 0
36 SMDG J1241424+273353 LSB 12 41 42.0 +27 33 53           ~ 2 0
37 SMDG J1245022+230956 LSB 12 45 02.0 +23 09 57           ~ 2 0
38 SMDG J1246029+255724 LSB 12 46 02.0 +25 57 28           ~ 2 0
39 SMDG J1247233+180140 LSB 12 47 23.0933 +18 01 42.297           ~ 7 0
40 SMDG J1248019+261236 LSB 12 48 02.0 +26 12 37           ~ 5 0
41 SDSS J124820.23+183819.4 LSB 12 48 20.232 +18 38 19.42           ~ 7 0
42 SMDG J1249353+253106 LSB 12 49 35.0 +25 31 06           ~ 2 0
43 SMDG J1249413+270645 LSB 12 49 41.2097 +27 06 46.879           ~ 6 0
44 SMDG J1251013+274753 LSB 12 51 01.34 +27 47 53.1           ~ 4 0
45 SMDG J1251291+284433 LSB 12 51 29.1 +28 44 33           ~ 2 0
46 SMDG J1251337+314240 LSB 12 51 34.0 +31 42 40           ~ 2 0
47 SMDG J1251371+244922 LSB 12 51 37.0 +24 49 24           ~ 4 0
48 SMDG J1252056+221556 LSB 12 52 05.7 +22 15 56           ~ 5 0
49 SMDG J1252402+262602 LSB 12 52 40.2 +26 26 02           ~ 2 0
50 SMDG J1253048+253121 LSB 12 53 04.7827 +25 31 22.487           ~ 6 0
51 SMDG J1253152+274115 LSB 12 53 15.1 +27 41 15           ~ 14 0
52 SMDG J1253489+273934 LSB 12 53 48.8672 +27 39 34.070           ~ 6 0
53 SMDG J1253571+291500 LSB 12 53 57.1 +29 15 00           ~ 6 0
54 SMDG J1254252+194332 LSB 12 54 25.1404 +19 43 31.842           ~ 6 0
55 SMDG J1254556+285846 LSB 12 54 56.0 +28 56 48           ~ 2 0
56 SMDG J1255336+213035 LSB 12 55 33.6292 +21 30 34.895           ~ 7 0
57 LEDA 44055 LSB 12 55 41.0 +19 12 34           ~ 44 0
58 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
59 SMDG J1301005+210355 LSB 13 01 00.3955 +21 03 56.261           ~ 6 0
60 IC 4107 LSB 13 02 41.87 +21 59 50.6           ~ 28 0
61 SMDG J1306148+275941 LSB 13 06 14.7766 +27 59 41.268           ~ 8 0
62 SMDG J1306158+273459 LSB 13 06 16.0 +27 35 01           ~ 3 0
63 SMDG J1307464+291230 LSB 13 07 46.3184 +29 12 31.170           ~ 6 0
64 SMDG J1308296+271354 LSB 13 08 29.5496 +27 13 54.103           ~ 4 0
65 SMDG J1312226+195525 LSB 13 12 22.0 +19 55 27           ~ 2 0
66 SMDG J1312222+312320 LSB 13 12 22.25 +31 23 20.2           ~ 5 0
67 AGC 239104 LSB 13 13 18.8269 +31 24 52.046           ~ 10 0
68 SDSS J131542.61+311848.0 LSB 13 15 42.618 +31 18 48.06           ~ 9 0
69 SMDG J1322538+220445 LSB 13 22 54.0 +22 04 46           ~ 2 0
70 SMDG J1322561+314804 LSB 13 22 56.1 +31 48 04           ~ 2 0
71 SMDG J1333509+275006 LSB 13 33 51.0 +27 50 07           ~ 2 0

To bookmark this query, right click on this link: simbad:objects in 2020ApJ...902...39K and select 'bookmark this link' or equivalent in the popup menu