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V604 Aquilae or Nova Aquilae 1905 is a nova which was first observed in the constellation Aquila in 1905 with a maximum brightness of magnitude 7.6.[3] It was never bright enough to be seen with the naked eye. It was discovered by Williamina Fleming on a Harvard College Observatory photographic plate taken on August 31, 1905.[6] Examination of plates taken earlier indicates that peak brightness occurred in mid-August 1905.[7] The star's quiescent visual band brightness is 19.6.[5]

V604 Aquilae or Nova Aquilae 1905

A light curve for V604 Aquilae, plotted from data published by Walker (1933)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 19h 02m 06.33s[2]
Declination −04° 26′ 43.2″[2]
Apparent magnitude (V) 7.6(blue) – 19.6(V)[3]
Astrometry
Absolute magnitude (MV)-8.3[4]
Characteristics
Spectral type pec(Nova)[3]
B−V color index 0.3[5]
Variable type NA[3]
Other designations
Nova Aquilae 1905, CSI-04-18594, SV* HV 1175, AAVSO 1856-04, AN 104.1905, HD 176779.
Database references
SIMBADdata
The location of V604 Aquilae (circled in red)
The location of V604 Aquilae (circled in red)

V604 Aquilae faded by 3 magnitudes in just 25 days, making it a "fast nova".[6] Detection of a faint nebula surrounding the star, with a radius of 0.4 arc minutes, was reported early in 1906.[8] In 1994, a photometric study detected brightness variations of up to ~0.45 magnitudes on timescales of about one hour.[9] An attempt to detect cool molecular gas surrounding the nova in 2015 was unsuccessful.[10]


References


  1. Walker, Arville D. (1933). "The photographic light curves of thirteen novae". Annals of the Astronomical Observatory of Harvard College. 84 (7). Bibcode:2001PASP..113..764D. Retrieved 27 October 2022.
  2. Downes, Ronald A.; Webbink, Ronald F.; Shara, Michael M.; Ritter, Hans; Kolb, Ulrich; Duerbeck, Hilmar W. (June 2001). "A Catalog and Atlas of Cataclysmic Variables: The Living Edition". The Publications of the Astronomical Society of the Pacific. 113 (784): 764–768. doi:10.1086/320802. Retrieved 27 October 2022.
  3. "V0604 Aql". The International Variable Star Index. AAVSO. Retrieved 27 October 2022.
  4. Harrison, T. E. (February 1991). "IRAS Observations of Classical Novae. II. Modeling the Detections". Astronomical Journal. 101: 587. Bibcode:1991AJ....101..587H. doi:10.1086/115708. Retrieved 28 October 2022.
  5. Szkody, Paula (August 1994). "BVRGK Observations of Northern Hemisphere Old Novae". Astronomical Journal. 108: 639. Bibcode:1994AJ....108..639S. doi:10.1086/117098. Retrieved 28 October 2022.
  6. Duerbeck, Hilmar W. (March 1987). "A Reference Catalogue and Atlas of Galactic Novae". Space Science Reviews. 45 (1–2): 1–14. Bibcode:1987SSRv...45....1D. doi:10.1007/BF00187826. Retrieved 27 October 2022.
  7. Tappert, C.; Vogt, N.; Della Valle, M.; Schmidtobreick, L.; Ederoclite, A. (July 2014). "Life after eruption - IV. Spectroscopy of 13 old novae". Monthly Notices of the Royal Astronomical Society. 442 (1): 565–576. Bibcode:2004IBVS.5550....1H. doi:10.1093/mnras/stu781. Retrieved 28 October 2022.
  8. Pickering, Edward C. (January 1906). "Nova 104.1905 Aquilae". Astronomische Nachrichten. 170: 147. Bibcode:1906AN....170..147P. Retrieved 27 October 2022.
  9. Haefner, R. (August 2004). "CCD Photometry of Five Faint Cataclysmic Variables". Information Bulletin on Variable Stars. 5550. Retrieved 28 October 2022.
  10. Kamiński, Tomek; Mazurek, Helena J.; Menten, Karl M.; Tylenda, Romuald (March 2022). "A search for cool molecular gas in GK Persei and other classical novae". Astronomy and Astrophysics. 659: A109. Bibcode:2022A&A...659A.109K. doi:10.1051/0004-6361/202142737. Retrieved 28 October 2022.


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