# Deeg 2018: Non-grey dimming events of KIC 8462852 from GTC spectrophotometry

> Hans J. Deeg, Roi Alonso, David Nespral et al., 2018. 5 records on Mysteries Department cite it. Independent confirmation of chromatic dips and the…

Source: https://mysteriesdept.com/sources/SRC0D8E6VZM0D8Z/non-grey-dimming-events-of-kic-8462852-from-gtc  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)Deeg 2018

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# Non-grey dimming events of KIC 8462852 from GTC spectrophotometry

Hans J. Deeg, Roi Alonso, David Nespral et al., 2018. _Astronomy & Astrophysics 610, L12_.

Spectrophotometry from the 10.4-metre Gran Telescopio Canarias during the 2017 dips. The dips are deeper in blue than red, with an Ångström absorption coefficient of 2.19 ± 0.45, consistent with optically thin dust of 0.0015 to 0.15 micron grains. Such grains would be blown out by radiation pressure, so they must be replenished from a comoving body within days.

**Tabby's star (KIC 8462852)** Articledoi: **[10.1051/0004-6361/201732453](https://doi.org/10.1051/0004-6361/201732453)** Checked against the original0

## What it's used for here

Independent confirmation of chromatic dips and the grain-size constraint.

## Cited by on this site 5 records

[GTC spectrophotometry gives an Ångström coefficient of 2.19 ± 0.45, consistent with grains of 0.0015 to 0.15…](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E78684PK7/gtc-spectrophotometry-gives-an-angstrom-coefficient-of-2-19)

Evidence

EVD

[Grains this small are blown out by radiation pressure and must be renewed from a comoving body within days.](https://mysteriesdept.com/mysteries/tabbys-star/evidence/EVD0D8E78NW28RW/grains-this-small-are-blown-out-by-radiation-pressure-and)

Evidence

EVD

[Tabby's star (KIC 8462852)](https://mysteriesdept.com/mysteries/tabbys-star)

The mystery article

MYS

[If the dips are dust, what produces it in large, short-lived clumps?](https://mysteriesdept.com/mysteries/tabbys-star/questions/QST0D8E76QC6BDA/if-the-dips-are-dust-what-produces-it-in-large-short-lived)

Question

QST

[What blocks the light during the deep, irregular dips?](https://mysteriesdept.com/mysteries/tabbys-star/questions/QST0D8E76FJ6B8S/what-blocks-the-light-during-the-deep-irregular-dips)

Question

QST

## Cite it

```
Deeg, H. J., Alonso, R., Nespral, D., & Boyajian, T. S. (2018). Non-grey dimming events of KIC 8462852 from GTC spectrophotometry. Astronomy & Astrophysics 610, L12. https://doi.org/10.1051/0004-6361/201732453
```

[Read it free at doi.org](https://doi.org/10.1051/0004-6361/201732453)

Key

**SRC** 0D8E6VZM0D8Z

Kind

Journal article

Rights

The publisher's

Checked

Against the published article

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS.

[CSL-JSON](https://mysteriesdept.com/sources/SRC0D8E6VZM0D8Z/non-grey-dimming-events-of-kic-8462852-from-gtc/csl.json)