2013AJ....145..149R

Query : 2013AJ....145..149R

2013AJ....145..149R - Astron. J., 145, 149 (2013/June-0)

ALFALFA discovery of the nearby gas-rich dwarf galaxy Leo P. II. Optical imaging observations.

RHODE K.L., SALZER J.J., HAURBERG N.C., VAN SISTINE A., YOUNG M.D., HAYNES M.P., GIOVANELLI R., CANNON J.M., SKILLMAN E.D., McQUINN K.B.W. and ADAMS E.A.K.

Abstract (from CDS):

We present results from ground-based optical imaging of a low-mass dwarf galaxy discovered by the ALFALFA 21 cm H I survey. Broadband (BVR) data obtained with the WIYN 3.5 m telescope at Kitt Peak National Observatory (KPNO) are used to construct color-magnitude diagrams of the galaxy's stellar population down to Vo∼ 25. We also use narrowband Hα imaging from the KPNO 2.1 m telescope to identify a H II region in the galaxy. We use these data to constrain the distance to the galaxy to be between 1.5 and 2.0 Mpc. This places Leo P within the Local Volume but beyond the Local Group. Its properties are extreme: it is the lowest-mass system known that contains significant amounts of gas and is currently forming stars.

Abstract Copyright: ∼

Journal keyword(s): galaxies: distances and redshifts - galaxies: dwarf - galaxies: irregular - galaxies: photometry - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/AJ/145/149): table1.dat>

Nomenclature: Table 1: [RSH2013] NN (Nos 1-82). Figs 1-2, Table 2: NAME Leo II P HII Region N=1.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12678 1
2 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 534 2
3 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2334 0
4 M 42 HII 05 35 17 -05 23.4           ~ 4083 0
5 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 391 0
6 NAME Leo A G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 616 0
7 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1209 1
8 NAME Leo P HII Region HII 10 21 45.10 +18 05 17.2           ~ 3 0
9 NAME Leo P BiC 10 21 45.123 +18 05 16.89           ~ 220 0
10 NAME Local Group GrG ~ ~           ~ 8415 0

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