1999MNRAS.302L...7R

Query : 1999MNRAS.302L...7R

1999MNRAS.302L...7R - Mon. Not. R. Astron. Soc., 302, L7-L12 (1999/January-1)

High-resolution UKIRT observations of circumnuclear star formation in M 100.

RYDER S.D. and KNAPEN J.H.

Abstract (from CDS):

We present high-resolution, near-infrared imaging of the circumnuclear region of the barred spiral galaxy M100 (NGC 4321), accompanied by near-infrared spectroscopy. We identify a total of 43 distinct regions in the K-band image, and determine magnitudes and colours for 41 of them. By comparison with other near-infrared maps we also derive colour excesses and K-band extinctions for the knots. Combining the imaging and spectroscopic results, we conclude that the knots are the result of bursts of star formation within the last 15–25 Myr. We discuss the implications of these new results for our dynamical and evolutionary understanding of this galaxy.

Abstract Copyright: 1998, Royal Astronomical Society

Journal keyword(s): galaxies: evolution - galaxies: individual: M100 (NGC 4321) - galaxies: kinematics and dynamics - galaxies: structure - infrared: galaxies MNRAS3352...52

Nomenclature: Table 1: [RK99] NN (Nos 1-43).

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

Simbad objects: 8

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Number of rows : 8
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 HD 102590 ** 11 48 38.7105955008 +14 17 03.144222456       7.18   A8V+G2V 85 0
2 * 3 Com * 12 10 31.6408011312 +16 48 33.374036088   6.447 6.387     A4V 68 0
3 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 1084 1
4 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1963 2
5 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
6 NGC 5248 G 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 554 0
7 [KBS95] K2 PoG ~ ~           ~ 10 0
8 [KBS95] K1 PoG ~ ~           ~ 10 0

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