2018MNRAS.476.4565B

Query : 2018MNRAS.476.4565B

2018MNRAS.476.4565B - Mon. Not. R. Astron. Soc., 476, 4565-4583 (2018/June-1)

Alone on a wide wide sea. The origin of SECCO 1, an isolated star-forming gas cloud in the Virgo cluster*+++.

BELLAZZINI M., ARMILLOTTA L., PERINA S., MAGRINI L., CRESCI G., BECCARI G., BATTAGLIA G., FRATERNALI F., DE ZEEUW P.T., MARTIN N.F., CALURA F., IBATA R., COCCATO L., TESTA V. and CORRENTI M.

Abstract (from CDS):

SECCO 1 is an extremely dark, low-mass (M* ≃ 105 M☉), star-forming stellar system lying in the low-velocity cloud (LVC) substructure of the Virgo cluster of galaxies, and hosting several H II regions. Here, we review our knowledge of this remarkable system, and present the results of (a) additional analysis of our panoramic spectroscopic observations with MUSE, (b) the combined analysis of Hubble Space Telescope and MUSE data, and (c) new narrow-band observations obtained with OSIRIS@GTC to search for additional H II regions in the surroundings of the system. We provide new evidence supporting an age as young as ≲¡ 4 Myr for the stars that are currently ionizing the gas in SECCO 1. We identify only one new promising candidate H II region possibly associated with SECCO 1, thus confirming the extreme isolation of the system. We also identify three additional candidate pressure-supported dark clouds in Virgo among the targets of the SECCO survey. Various possible hypotheses for the nature and origin of SECCO 1 are considered and discussed, also with the help of dedicated hydrodynamical simulations showing that a hydrogen cloud with the characteristics of SECCO 1 can likely survive for ≳¡ 1 Gyr while travelling within the LVC Intra Cluster Medium.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): H ii regions - galaxies: clusters: individual: Virgo cluster - galaxies: dwarf - galaxies: interactions - galaxies: star formation

Simbad objects: 32

goto Full paper

goto View the references in ADS

Number of rows : 32
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 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 HVC 277.2+65.1-140 HVC 12 09 20.0 +04 23 30           ~ 7 0
4 NGC 4216 AGN 12 15 54.444 +13 08 57.84 11.51 10.99 10.01     ~ 424 1
5 NAME Virgo LVC Cloud GrG 12 16.0 +13 24           ~ 11 0
6 MCG+02-31-089 GiP 12 19 01.9785829056 +13 58 56.837216748   17       ~ 27 0
7 IC 3142 LSB 12 19 05.091 +13 58 52.19   15.4       ~ 56 0
8 RMB 56 AG? 12 19 14.234 +13 52 56.65   15.5       ~ 65 0
9 NGC 4294 GiC 12 21 17.787 +11 30 39.99   12.6       ~ 320 0
10 NGC 4299 GiC 12 21 40.548 +11 29 59.74   12.8       ~ 271 0
11 AGC 229490 G 12 21 53.6 +13 27 32           ~ 4 0
12 SECCO 1 G 12 21 53.96 +13 27 36.5     19.9     ~ 26 0
13 [BBM2017] MB61 HII 12 21 54.03 +13 27 41.4           ~ 2 0
14 [BBM2017] MB59 HII 12 21 54.04 +13 27 38.3           ~ 2 0
15 [BBM2017] MB25 HII 12 21 54.09 +13 27 39.7           ~ 2 0
16 [BBM2017] MB30 HII 12 21 54.14 +13 27 42.8           ~ 2 0
17 [BBM2017] MB27 HII 12 21 54.20 +13 27 41.2           ~ 2 0
18 [BBM2017] MB56 HII 12 21 54.22 +13 27 41.8           ~ 2 0
19 [BBM2017] MB26 HII 12 21 54.35 +13 27 41.1           ~ 2 0
20 AGC 226067 G 12 21 55.2 +13 28 10           ~ 24 0
21 [BBM2017] SB02 HII 12 21 56.32 +13 29 11.2           ~ 2 0
22 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
23 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
24 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
25 IC 3418 LIN 12 29 43.919 +11 24 16.87   16.5       ~ 127 1
26 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
27 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
28 AGC 226165 G 12 34 33.84 +08 23 20.5           ~ 8 0
29 HVC 292.9+70.4+159 HVC 12 37 58.5 +07 48 49           ~ 4 0
30 AGC 226170 G 12 42 05.7 +09 54 14           ~ 6 0
31 [DPP2015] 69 G 12 45 23.76 +05 18 32.7           ~ 7 0
32 NAME Local Group GrG ~ ~           ~ 9325 0

To bookmark this query, right click on this link: simbad:objects in 2018MNRAS.476.4565B and select 'bookmark this link' or equivalent in the popup menu