author={E. Borra and P. H. Andersen},
  journal={Publications of the Astronomical Society of the Pacific},
Nova Serpentis 1970 (a = 18h28m16s, 8 = 2° 34 '42" (1950)) was discovered by Honda on February 13. Plate I shows the nova and the surrounding field. The brightest photoelectric observation was reported in I AU Circular No. 2220 at V = 4^41 on February 18.46 and should be close to maximum light. Observations of the nova were started by the writers a few days later and continued until the end of May. The photoelectric equipment was as described by Burke, Rice, and Wehlau (1969). As the nova faded… Expand
The UBV Color Evolution of Classical Novae. I. Nova-giant Sequence in the Color-Color Diagram
We identified a general course of classical nova outbursts in the B – V versus U – B color-color diagram. It is reported that novae show spectra similar to those of A-F supergiants near optical lightExpand
Hubble Space Telescope imaging and ground-based spectroscopy of old nova shells – I. FH Ser, V533 Her, BT Mon, DK Lac and V476 Cyg
In this paper we report on the first five out of eleven observations in our programme of Hubble Space Telescope (HST) imaging of old nova shells. We present new WFPC2 images of the shells around FHExpand
Nova Delphini 1967: Radial Velocities and Excitation Potentials of Lines
Radial velocities were derived from absorption lines of various excitation potentials; there seems to exist a small dependence on this potential.
The UBV Color Evolution of Classical Novae. IV. Time-stretched (U − B)0–(M B − 2.5 log f s) and (V − I)0–(M I − 2.5 log f s) Color–Magnitude Diagrams of Novae in Outbursts
Light curves and color evolutions of two classical novae can be largely overlapped if we properly squeeze or stretch the timescale of a target nova against that of a template nova by . Then, theExpand